Stock Market Glossary

What This Page Is

Quick, plain-English definitions of the stock terms you are likely to hit first on TickerPosts: ticker symbols, the numbers on ticker pages, the ratios traders argue about, and a few risk concepts worth knowing before you act on any post. Nothing here is investment advice; see the disclaimer.

This list is a starting set. We will keep adding entries over time.

Jump To A Term

Ticker Symbol
Market Cap
Float
Volume
P/E Ratio
Forward P/E
PEG Ratio
Price-to-Book Ratio
Book Value
EPS
Working Capital
Debt-to-Equity Ratio
Net Income
Revenue
EBITDA
Gross Margin
Operating Margin
Net Margin
Return on Equity
Operating Cash Flow
Return on Assets
Free Cash Flow
Capital Expenditures (CapEx)
Dividend
Dividend Yield
Share Buyback
Dilution
Short Selling
Short Interest
Short Squeeze
RSI
MACD
Penny Stock
Pump and Dump
52-Week High and Low
All-Time High
Bid and Ask
Liquidity
Volatility
Bull and Bear Markets
IPO
ETF
Diversification
OTC Markets
Stock Split
Beta
Federal Reserve
Yield Curve
Quiet Period
Earnings Call
Earnings Beat and Miss
Earnings Guidance
Consensus Estimate
Moving Average
After-Hours and Premarket Trading
Limit Order and Market Order
Stop Loss Order
10-K (Annual Report)
10-Q (Quarterly Report)
8-K (Material Event Filing)
Insider Trading and Form 4
DD (Due Diligence)
HODL
FUD
FOMO
Bagholder

Ticker Symbol

A short code that identifies a publicly traded stock on an exchange.

A ticker symbol is the short letter code an exchange uses to identify a publicly traded company. Apple is AAPL, Microsoft is MSFT, and Tesla is TSLA. U.S. exchanges typically use one to four letters; over-the-counter and pink-sheet stocks can be longer.

On TickerPosts, every ticker has its own discussion page at /t/<symbol>. You can search by symbol or company name from the search bar at the top of the site.

Related: Market Cap, Volume, OTC Markets

Market Cap

The total dollar value of a company’s outstanding shares: share price multiplied by shares outstanding.

Market capitalization, usually shortened to market cap, is the total dollar value of all of a company’s outstanding shares. It is calculated as the current share price times the number of shares outstanding.

Market cap is the most common way to size a company. Large caps are typically above $10B, mid caps roughly $2B to $10B, small caps roughly $300M to $2B, and anything below that is generally called a micro cap or nano cap. Larger market caps are usually less volatile and harder to manipulate; smaller market caps are often the target of pump-and-dump schemes.

Related: Float, Share Buyback, ETF, IPO

Float

The number of shares actually available for the public to trade, excluding restricted insider shares.

Float, sometimes called public float, is the number of a company’s shares that are actually available for the public to buy and sell. It excludes shares locked up by insiders, founders, employees, and other large holders who do not trade them day to day.

A small float means fewer shares are changing hands, so each buy or sell order has a bigger effect on price. That is why low-float stocks are more volatile and more vulnerable to coordinated promotion. When you see a stock making a sudden large percentage move on small volume, a low float is often part of the story.

Volume

The number of shares traded in a given period, usually one day.

Volume is simply the number of shares that have been bought and sold during a given period. On most charts, the headline volume number is the day’s trading volume so far.

Volume is a context number, not a signal on its own. A 3% move on twenty times normal volume tells a different story than the same move on a quiet day. Unusually high volume can mean fresh news, earnings, a coordinated push, or just a planned index rebalance. Always check why volume spiked before assuming the move is meaningful.

P/E Ratio

Price-to-earnings ratio: how many dollars investors are paying for each dollar of the company’s annual earnings.

The price-to-earnings ratio, usually written P/E, is the current share price divided by earnings per share over a recent period (often the last twelve months). A P/E of 20 means the market is currently paying $20 for every $1 of yearly earnings.

A high P/E often means investors expect strong future growth; a low P/E often means the market sees risk or weak growth ahead. P/E is most useful when compared between similar companies in the same industry, not across different sectors. A loss-making company has no meaningful P/E.

Forward P/E

Price-to-earnings ratio that uses next year's expected earnings per share in the denominator instead of the last twelve months, often quoted alongside the trailing P/E.

Forward P/E uses the next twelve months of expected earnings per share, or sometimes the next fiscal year's expected EPS, as the denominator instead of the last twelve months. Trailing P/E divides the price by what the company already earned; forward P/E divides the price by what analysts expect the company to earn. For a growing company the forward P/E is usually meaningfully lower than the trailing P/E, because the denominator is larger.

Forward P/E inherits all the limits of the analyst consensus that drives it: estimates change as new data arrives, the consensus can be too optimistic or too pessimistic, and the ratio breaks for companies expected to lose money next year. The most useful read is the two side by side. A trailing P/E of 40 and a forward P/E of 20 says the market is paying up today on the expectation of strong earnings growth; if that growth disappoints, the forward P/E will rise as estimates come down even if the price does not change. Like every valuation ratio, forward P/E is most useful compared between similar companies in the same industry.

PEG Ratio

Price-to-earnings ratio divided by the expected earnings growth rate, used to compare valuation across companies growing at different paces.

The PEG ratio is the price-to-earnings ratio divided by the expected annual earnings growth rate, expressed as a number. A company with a P/E of 30 and an expected growth rate of 30 percent has a PEG of 1.0; a company with the same P/E of 30 but only 15 percent expected growth has a PEG of 2.0. The intent is to put a stock's valuation in the context of how fast its earnings are actually growing, which a raw P/E does not capture.

PEG is most often cited with a rough rule of thumb that a value near 1.0 is reasonable, below 1.0 is potentially undervalued, and well above 1.0 is potentially overvalued. The rule is loose. The growth-rate input is an estimate, usually from sell-side analysts, and small changes in that input swing the result; companies with very low growth produce very high PEG values that are not always meaningful; and the ratio breaks for companies with negative earnings or negative growth. Like the P/E, the PEG is most useful when compared between similar companies in the same industry, not across sectors.

Price-to-Book Ratio

The current share price divided by book value per share, used as a quick gauge of how much the market is paying above (or below) accounting net worth.

The price-to-book ratio, usually written P/B, is the current share price divided by book value per share. Book value per share is shareholders' equity divided by the number of shares outstanding, where shareholders' equity comes from the balance sheet (assets minus liabilities). A P/B of 1.0 means the stock is trading at exactly book value; a P/B of 3.0 means the market is paying three dollars for every dollar of book-value equity.

P/B is most useful for asset-heavy businesses whose balance sheet captures most of their value (banks, insurers, industrials, real estate). It is less useful for asset-light businesses (software, brands, services) where the largest sources of value (intangibles like brand, code, and customer relationships) are not fully reflected in book value, so an asset-light company can trade at a P/B of 10 or more for entirely sensible reasons. Like the P/E, the P/B is best read against same-industry peers rather than across sectors. A very low P/B can mean the market is concerned about asset write-downs or the durability of book equity, not necessarily that the stock is undervalued.

Book Value

Total assets minus total liabilities on a company's balance sheet, also called shareholders' equity, expressed per share as book value per share.

Book value is what is left on a company's balance sheet after subtracting total liabilities from total assets. It is the same number the balance sheet labels shareholders' equity, and it represents the accounting view of what the business would be worth in a clean orderly wind-down if every line item on the balance sheet could actually be sold for its stated value. Book value per share is book value divided by the number of shares outstanding, which is the denominator the price-to-book ratio uses on the other side of the share price.

Book value is a starting point, not the answer. It is most informative for asset-heavy businesses (banks, insurers, real estate, regulated utilities, capital-intensive industrials) where the balance sheet captures most of what the business owns and owes. It systematically understates the value of asset-light businesses (software, brands, consumer franchises, professional services) where the most valuable assets are intangibles like brand recognition, code, customer relationships, and network effects that accounting either does not record at all or records at a small fraction of their economic value. Book value is also influenced by accounting choices like the inventory method and goodwill from past acquisitions, so two companies that look similar operationally can carry very different book equity.

EPS

Earnings per share: company profit divided by the number of shares outstanding.

Earnings per share, or EPS, is a company’s net profit for a period divided by the number of shares outstanding. Quarterly EPS is one of the headline numbers reported on every earnings day.

Investors care about EPS both on its own (was it positive?) and relative to expectations. A company can “beat” an EPS estimate and still see its stock fall if guidance for the next quarter is weak. Always read the full earnings release before reacting, not just the EPS headline.

Working Capital

Current assets minus current liabilities — the short-term financial buffer a company has on hand to run day-to-day operations.

Working capital is current assets (cash, short-term investments, accounts receivable, inventory, and other items the company expects to convert to cash inside one year) minus current liabilities (accounts payable, accrued expenses, short-term debt, and other obligations due inside one year). Both numbers come from the balance sheet that ships with every 10-Q and 10-K. Positive working capital means the company has more short-term resources than short-term obligations and can fund day-to-day operations from its own balance sheet; negative working capital can be a sign of strain or, in some business models, a sign of advantage.

How working capital reads depends heavily on the business model. Asset-heavy manufacturers and retailers carry meaningful inventory and receivables, so working capital is mostly a buffer against demand and pricing swings. Subscription-software and consumer-internet businesses often run on negative working capital because customers prepay (deferred revenue is a current liability) before the company has to spend on delivery, which is a structural cash-cycle advantage rather than a stress signal. The change in working capital from quarter to quarter is what shows up in the operating cash flow statement as a reconciling item between net income and operating cash flow: a meaningful build of receivables or inventory consumes cash even when revenue is recognized; a meaningful build of payables or deferred revenue releases cash even when revenue lags.

Debt-to-Equity Ratio

Total liabilities (or total debt) divided by shareholders' equity, expressed as a multiple, measuring how much debt a company is using relative to its accounting net worth.

The debt-to-equity ratio, often written D/E, is total liabilities (or in some calculations only the interest-bearing debt: short-term borrowings plus long-term debt) divided by shareholders' equity, expressed as a multiple. A D/E of 0.5 means the company is funded with $0.50 of liabilities for every $1 of equity; a D/E of 2.0 means $2 of liabilities for every $1 of equity. The figure pulls from the balance sheet that ships with every 10-Q and 10-K, and the calculation differs slightly across data providers depending on whether they use total liabilities or only interest-bearing debt, so two sources can show different D/E values for the same company in the same quarter.

D/E is a structural property of the industry as much as a sign of strength or weakness on its own. Utilities, telecoms, and banks routinely carry D/E above 2.0 because their business model is fundamentally about taking on cheap long-duration capital and earning a spread on it; software companies often carry D/E below 0.3 because they fund growth from operating cash flow and do not need a large balance-sheet capital base. Within the same industry, a meaningful D/E gap signals structural choice: a higher D/E peer typically delivers higher ROE in good times (debt amplifies returns on equity) but also higher earnings volatility and worse downside in recessions when interest expense does not flex. Watch the trend over time on a single company: a steady rise in D/E without a matching rise in operating cash flow is a yellow flag worth understanding, especially if the company is paying for buybacks or dividends by issuing new debt.

Net Income

The bottom line of the income statement — what is left from revenue after every cost line (operating costs, interest, taxes, one-time items) is subtracted.

Net income (sometimes called profit, earnings, or the bottom line) is the last line of the income statement filed with every 10-Q and 10-K. It is what is left from revenue after the company pays for the direct cost of goods sold, the operating expenses (research and development, sales and marketing, general and administrative), interest on debt, income taxes, and any one-time items above the line. Net income divided by diluted shares outstanding equals diluted EPS; net income divided by revenue equals the net margin defined elsewhere in this glossary. Net income is reported under U.S. GAAP, which means the calculation follows a standard rule set across companies and is audited at year-end.

Net income is the most-quoted single number in earnings coverage, but it is not the cleanest read on a business. Two issues to watch: (1) net income includes non-cash charges (depreciation, amortization, stock-based compensation) and one-time items (asset sales, restructuring charges, impairment write-downs, legal settlements) that can push it around in a single quarter without telling you anything about the underlying business — the operating-cash-flow and free-cash-flow lines are the cash-side counterparts that strip those out; (2) the EPS denominator changes when share counts change, so a company that bought back shares can grow EPS faster than net income, and a company that issued shares can shrink EPS even with rising net income. Read net income alongside operating income (the line above interest and taxes), operating cash flow, and free cash flow for the full picture.

Revenue

The total amount a company billed customers for the products and services it delivered during a period — the top line of the income statement.

Revenue (sometimes called sales or net sales) is the total amount a company billed customers for the products and services it delivered during a period. It is the top line of the income statement filed with every 10-Q and 10-K, and every margin figure further down the statement is expressed as a percentage of it. Revenue is reported under the company's revenue-recognition policy, which under U.S. GAAP follows the five-step model in ASC 606: identify the contract, identify the performance obligations, determine the transaction price, allocate the price to each obligation, and recognize revenue as each obligation is satisfied. The footnotes to the financial statements explain how the company applies that policy to its specific business model.

Year-over-year revenue growth is one of the most-watched single numbers in earnings coverage because it shows how fast the business is actually growing in customers, units, and pricing. A meaningful step up usually signals product traction or pricing power; a meaningful step down can signal demand weakness, lost share, or a pricing reset. Read revenue growth alongside organic-vs-inorganic detail when the company has made acquisitions (an acquisition can lift revenue without the underlying business growing), and alongside foreign-exchange impact for companies with a meaningful share of sales outside their reporting currency. Revenue alone tells you the size of the business, not its quality — a company can grow revenue every year while losing money and burning cash, which is why the operating margin and free cash flow lines further down the income and cash flow statements matter for the full picture.

EBITDA

Earnings before interest, taxes, depreciation, and amortization — a common non-GAAP profitability measure that strips out financing and accounting choices.

EBITDA, pronounced "ee-bit-dah," stands for earnings before interest, taxes, depreciation, and amortization. It is calculated by starting from operating income and adding back depreciation and amortization, the two non-cash accounting charges that reduce reported operating income but do not represent a current-period cash outflow. The result is a profitability measure that strips out the company's capital structure (interest expense varies by how much debt it carries), its tax jurisdiction (tax rates vary by country and one-time items), and the accounting effect of past investments (depreciation and amortization schedules differ by asset type).

EBITDA is a non-GAAP measure: it is not defined by U.S. GAAP, is not on the income statement directly, and every company can compute it slightly differently. Critics, including Warren Buffett, point out that depreciation is a real economic cost — equipment really does wear out and needs replacing — so EBITDA can flatter capital-intensive businesses by ignoring the future capex they will have to spend. Investors who use EBITDA typically also look at the EV/EBITDA multiple (enterprise value divided by EBITDA) for cross-company comparison, especially among leveraged or asset-heavy industries where the P/E is harder to read. Watch for management adjustments: "adjusted EBITDA" can layer further add-backs (stock-based compensation, restructuring charges, one-time legal items) on top, and the more aggressive the adjustments, the less useful the number.

Gross Margin

Revenue minus the direct cost of producing the product, divided by revenue, expressed as a percentage.

Gross margin is revenue minus cost of goods sold (often shortened to COGS), divided by revenue, expressed as a percentage. Cost of goods sold is the direct cost of producing what the company sold during the period: raw materials, the labor that turned them into product, factory or hosting capacity used to deliver it. Everything below the gross-margin line on the income statement (research and development, sales and marketing, general and administrative expenses, taxes, interest) is excluded. A 70 percent gross margin means the company keeps 70 cents of gross profit from every dollar of sales before paying for the rest of the business.

Gross margin is the cleanest read on how much pricing power a company has over what it sells. Software companies regularly run gross margins of 70 to 85 percent because the marginal cost of one more customer is small once the code exists; manufacturers and retailers run gross margins in the 20 to 40 percent band because materials and inventory are the bulk of cost. Compare gross margin within the same industry rather than across sectors. The Gross Margin → Operating Margin → Net Margin ladder is the standard profitability decomposition: gross margin shows pricing power on the product, operating margin layers in the cost of running the company, net margin layers in the cost of capital and taxes on top.

Operating Margin

Operating income divided by revenue, expressed as a percentage, measuring how much profit a company keeps from each dollar of sales after running the business.

Operating margin is operating income divided by revenue, expressed as a percentage. Operating income (sometimes labelled operating profit) is what is left from revenue after the company pays for the costs directly tied to running the business: cost of goods sold, research and development, sales and marketing, and general and administrative expenses. Taxes, interest, and one-time items sit below the operating line and are not included. A 25 percent operating margin means the company keeps 25 cents of operating profit from every dollar of sales.

Operating margin is most useful as a comparison within the same industry, because cost structures vary widely across sectors. Software companies regularly run operating margins above 30 percent because the marginal cost of an extra customer is low; grocery chains run operating margins in the low single digits because they sell high volumes at thin gross profit. The trend over time on a single company is often more informative than the absolute number: an operating margin that has expanded for several quarters in a row usually signals operating leverage as revenue grows faster than costs, while a steadily declining margin can flag rising costs, pricing pressure, or higher spending on growth bets that have not paid off yet. Operating margin is reported every quarter in the income statement filed with each 10-Q and 10-K.

Net Margin

Net income divided by revenue, expressed as a percentage, measuring how much of each dollar of sales is left after every cost of running the business.

Net margin (sometimes called net profit margin or bottom-line margin) is net income divided by revenue, expressed as a percentage. Net income is what is left from revenue after every cost line on the income statement: the direct cost of goods sold, the operating expenses (research and development, sales and marketing, general and administrative), interest on debt, income taxes, and any one-time items. A 15 percent net margin means the company keeps 15 cents from every dollar of sales after paying for everything it takes to run the business and finance it. Net margin is the last line of the income statement, which is why income statements are often described as running from the top line (revenue) to the bottom line (net income).

Net margin completes the Gross Margin → Operating Margin → Net Margin ladder. Gross margin shows pricing power on the product; operating margin layers in the cost of running the company; net margin layers in the cost of capital, taxes, and one-time items on top. The gap between operating and net margin is mostly interest expense and taxes, so two companies with the same operating margin can show very different net margins if one carries more debt or operates in a higher-tax jurisdiction. Compare within the same industry rather than across sectors, and watch one-time items (asset sales, restructuring charges, legal settlements) that can push net margin around in a single quarter without telling you anything about the underlying business.

Return on Equity

Net income divided by shareholders' equity, expressed as a percentage, measuring how much profit a company generates from each dollar of book value.

Return on equity, usually written ROE, is net income divided by shareholders' equity, expressed as a percentage. Shareholders' equity is the book-value figure on the balance sheet (assets minus liabilities). An ROE of 15 percent means the company earned 15 cents of profit for every dollar of book-value equity over the period. ROE is a popular shorthand for how efficiently a company turns its accounting capital base into profit.

ROE is most useful as a comparison within the same industry. Banks and asset-light software companies sit at very different ends of the ROE scale because the size of the equity base they operate on is structurally different. A high ROE driven by heavy debt is a different story than a high ROE driven by strong margins, since debt shrinks the equity denominator without making the underlying business more profitable. The DuPont decomposition breaks ROE into net margin, asset turnover, and financial leverage so each piece can be read separately; that decomposition is the standard tool when one company's ROE looks meaningfully different from peers.

Operating Cash Flow

The cash a company actually generates from its day-to-day business, before subtracting investment in equipment and acquisitions.

Operating cash flow (often shortened to OCF) is the cash a company actually collects from its day-to-day business operations during a period, reported as the first major section of the cash flow statement filed with every 10-Q and 10-K. It starts from net income and adjusts back the non-cash items (depreciation, amortization, stock-based compensation, working-capital swings) so the result is the dollar amount that physically moved into or out of the operating bank account. A growing company can show positive net income for years while reporting weak operating cash flow if it relies heavily on stock-based compensation or stretches its accounts payable to flatter the income statement.

OCF is the cash-side counterpart to net income: net income comes from accounting accruals, operating cash flow comes from actual cash movement. Investors watch the gap between the two because a persistent gap (OCF lower than net income for several quarters in a row) can signal aggressive revenue recognition, ballooning receivables, or one-time accounting choices that pumped reported earnings without putting real money in the bank. Operating cash flow minus capital expenditures equals free cash flow, the figure the free-cash-flow entry covers in detail.

Return on Assets

Net income divided by total assets, expressed as a percentage, measuring how much profit a company generates from each dollar of assets the business uses.

Return on assets, usually written ROA, is net income divided by total assets, expressed as a percentage. Total assets is the top line of the balance sheet (cash, receivables, inventory, property, plant and equipment, intangibles, and goodwill). An ROA of 5 percent means the company earns five cents of profit for every dollar of assets it operates on. ROA is the sister metric to return on equity: ROE measures profit per dollar of book-value equity, ROA measures profit per dollar of all the resources the business is using regardless of how those resources are funded.

ROA reads as a structural property of the industry. Banks and insurers carry enormous assets relative to revenue, so their ROA is usually low single digits even when the business is doing well. Software and consumer-internet companies carry relatively few assets per dollar of revenue, so their ROA can run above 15 percent. The gap between ROE and ROA is essentially a leverage tell: a company with ROE much higher than ROA is using a lot of debt or financial leverage to amplify the equity-side return; a company with ROE close to ROA is funded primarily by equity. Compare within the same industry rather than across sectors, and watch the trend on a single company. A declining ROA usually signals that the business has grown its asset base faster than its earnings — often a sign of either an acquisition cycle still earning back goodwill or a capex cycle still ramping toward full utilization.

Free Cash Flow

The cash a company generates from its operations after paying for the equipment, software, and facilities it needs to keep running.

Free cash flow, often shortened to FCF, is the cash a company has left over from its operations after spending on the physical and digital assets it needs to keep the business running (the capital expenditures, or capex, line). It is calculated as operating cash flow minus capex, both of which appear on the cash flow statement filed with every 10-Q and 10-K.

Investors care about free cash flow because it is harder to manipulate than reported earnings, which can be reshaped by accounting choices. Free cash flow shows how much money the business actually puts in the bank after covering its core needs. That cash is what is available to pay dividends, fund buybacks, pay down debt, or invest in growth. Sustained negative free cash flow at a company that is not in early-growth mode is a yellow flag worth understanding.

Capital Expenditures (CapEx)

Cash a company spends on long-lived physical or digital assets, like buildings, machinery, servers, and software development that the business will use for years.

Capital expenditures, almost always shortened to capex, is the cash a company spends on long-lived assets that the business will use for more than one year: factories and warehouses, machinery and vehicles, servers and networking gear, capitalized internal-use software, and meaningful retrofits to existing assets. CapEx appears as a line in the investing section of the cash flow statement (usually labelled 'purchases of property, plant, and equipment' or similar) and is the figure that gets subtracted from operating cash flow to compute free cash flow.

How much capex a business runs is a structural property of the industry, not a sign of strength or weakness on its own. Software companies often run capex below 5 percent of revenue because the marginal cost of one more customer is a server, not a building. Utilities, telecoms, refiners, and railroads can run capex above 15 percent of revenue because the business is fundamentally about owning long-lived physical infrastructure. Watch the capex trend on a single company: a meaningful step up usually signals an investment cycle (new factory, new data center, fleet renewal) that depresses near-term free cash flow but is expected to lift future operating cash flow once the asset is in service. Maintenance capex (replacing what wears out) and growth capex (expanding capacity) are sometimes broken out in management commentary, though the cash flow statement itself only reports the total.

Dividend

A cash payment a company sends to shareholders, usually on a quarterly schedule.

A dividend is a cash payment a company sends to its shareholders, typically every quarter. Mature, profitable companies pay dividends; many fast-growing companies reinvest their cash instead and pay nothing.

Three dates matter: the declaration date (when the dividend is announced), the ex-dividend date (you must own the shares before this date to receive the payment), and the payment date (when the cash arrives). The dividend yield is the annual dividend divided by the current share price, expressed as a percentage.

Dividend Yield

The annual dividend per share divided by the current share price, expressed as a percentage, used to compare the cash payout across stocks of different prices.

Dividend yield is the annual dividend per share divided by the current share price, expressed as a percentage. A stock at $100 paying $3 a year in dividends has a 3 percent yield. The number lets you compare the cash payout from very different companies side by side, since the absolute dollar amount of a dividend depends on the share price and the share count, neither of which says much on its own.

A higher yield is not automatically better. The yield rises when the price falls, so a very high yield can mean the dividend is at risk of being cut and the market is already pricing in the risk. Stable yields in the two-to-four percent range are common for mature dividend payers; yields well above that range are worth checking against the company's free cash flow and recent guidance. The trailing yield is calculated from the dividends actually paid over the last twelve months; the forward yield uses the company's most recent declared rate annualized. The two can differ when a company has just raised, cut, or skipped a payment.

Dilution

An increase in a company's share count that reduces each existing shareholder's percentage of the company.

Dilution happens when a company issues new shares, so the total number of shares outstanding goes up and each existing shareholder owns a smaller slice of the same company. Common sources are secondary offerings to raise cash, shares used to fund acquisitions, employee stock-based compensation, and the conversion of warrants or convertible debt into common shares. Material new issuances are disclosed in the quarterly 10-Q and annual 10-K; large or sudden ones often appear in an 8-K when announced.

Dilution does not automatically make a stock a bad investment. A secondary offering that funds a profitable acquisition, or stock-based compensation that helps attract strong employees, can leave shareholders better off even with a larger share count. But repeated dilution at companies that are not generating cash is a yellow flag the community calls out for a reason: it is one of the most common ways small-cap and penny-stock investors lose money even when the price chart looks rangebound. Track the diluted share count line on each quarterly report; the rate of change there often tells you more than the headline earnings number.

Short Selling

Borrowing shares to sell now, planning to buy them back later at a lower price, profiting from a fall instead of a rise.

Short selling is a trading strategy that profits from a stock going down instead of up. The trader borrows shares from their broker, sells them at the current market price, and waits. If the price falls, they buy the shares back cheaper, return them to the broker, and keep the difference. If the price rises, they lose the difference instead.

Short selling is riskier than buying because the potential loss is theoretically unlimited: a stock can keep climbing, but it can only fall to zero. Short sellers also pay borrowing fees while the position is open and can be forced to close their bet early if the broker recalls the borrowed shares. The aggregate of all open short positions is published as short interest, and a sudden forced wave of buying to close shorts is what is called a short squeeze.

Short Interest

The number of shares that have been sold short and not yet bought back, often quoted as a percent of float.

Short interest is the total number of shares that traders have borrowed and sold short, betting the price will fall. It is often quoted as a percentage of the float so the number is comparable between companies.

High short interest means many traders are positioned against the stock. That can mean the market sees real problems, or it can set up a short squeeze if the stock unexpectedly rises and short sellers are forced to buy back at higher prices. Short-interest data is published by exchanges on a delayed schedule, so the headline number is usually a couple of weeks old.

Short Squeeze

A sharp price rally driven by short sellers being forced to close their bets by buying the stock back.

A short squeeze happens when a heavily shorted stock starts to rise, and the short sellers are forced to buy shares to close their positions. That buying pushes the price up further, which forces more short sellers to cover, which pushes the price up even more.

Short squeezes can be dramatic but they are also a classic pump narrative. “This is the next squeeze” posts are common and rarely accurate. Be skeptical of any pitch that depends entirely on a squeeze happening, especially on low-float micro-cap stocks.

RSI

Relative Strength Index: a 0–100 momentum indicator that flags whether a stock has moved a lot in a short window.

RSI, short for Relative Strength Index, is a technical indicator that compares the size of recent gains to the size of recent losses over a chosen lookback (commonly 14 trading days). It is scaled from 0 to 100. Readings above 70 are often described as “overbought” and below 30 as “oversold.”

RSI is a momentum context tool, not a buy or sell signal. A stock can stay above 70 for weeks during a strong rally and below 30 for weeks during a serious decline. Use it to compare current momentum to a stock’s own history, not as a standalone reason to trade.

Related: MACD, Moving Average, Volatility

MACD

Moving Average Convergence Divergence: a trend-following indicator built from two moving averages.

MACD stands for Moving Average Convergence Divergence. The classic version subtracts a 26-period exponential moving average from a 12-period one, then plots a 9-period “signal line” on top. The difference between the two lines is shown as a histogram.

Traders watch MACD for crossovers (the fast line crossing the signal line) and for divergence between MACD and price. Like RSI, it is a context indicator, not a guarantee. The same crossover that looks like a clean signal on one chart can fail repeatedly on another. Treat it as one input among several.

Related: RSI, Moving Average, Volatility

Penny Stock

A very low-priced stock, usually under $5 per share and often traded over-the-counter, with elevated manipulation risk.

The U.S. Securities and Exchange Commission generally defines a penny stock as a stock trading below $5 per share. Many trade over-the-counter rather than on a major exchange, with thin volume, limited public information, and small market caps.

Penny stocks are the most common vehicle for pump-and-dump schemes. Low price and low float make their charts easy to move, and the lack of analyst coverage makes hype harder to fact-check. If you discuss penny stocks on TickerPosts, expect tighter moderation: cite real sources, avoid price targets phrased as certainties, and read the community guidelines before posting.

Pump and Dump

A fraud scheme where promoters quietly accumulate a thinly traded stock, hype it heavily to inflate the price, then sell their shares while new buyers are still arriving.

Pump and dump is a long-standing form of securities fraud. Promoters accumulate a position in a thinly traded stock, then push the price up through coordinated hype on social media, message boards, paid newsletters, or group chats. As new buyers pile in, the promoters quietly sell their shares into the rising price. Once the buying pressure runs out, the price collapses and the new buyers are left holding losses.

The SEC and FINRA have repeatedly warned that pump and dump is most common in penny stocks, OTC tickers, and very low-float micro caps because their prices are easy to move with relatively small coordinated buying. TickerPosts handles this risk through community guidelines, the penny-stock notice on low-priced ticker pages, and a composer warning that flags common pump phrases. For a longer walkthrough of the four stages of a typical scheme and what the warning signs look like, see the full guide on the blog.

Related: Penny Stock, OTC Markets, FOMO, FUD

Last reviewed May 26, 2026

52-Week High and Low

The highest and lowest prices a stock has traded at over the past 52 weeks of trading.

A stock's 52-week high is the highest price it has traded at over the past 52 weeks of trading; the 52-week low is the lowest. These two numbers give a quick sense of where the current price sits compared with the past year, and they are quoted on almost every ticker page on the web.

A stock trading near its 52-week high is often described as having strong momentum; one near its 52-week low is usually described as out of favor. Neither label is a buy or sell signal on its own. Many stocks bounce back from new lows; others ride along the lows for years. Use the 52-week range as context, not as a trigger.

All-Time High

The highest price a stock has ever traded at since it first listed on a public exchange, often abbreviated ATH.

The all-time high of a stock, often abbreviated ATH, is the highest price it has ever traded at since it first listed on a public exchange. Some data providers measure ATH on the closing print only; others use the intraday high. Splits are usually back-adjusted so the comparison is on a per-share basis that still makes sense after a 2-for-1 or 10-for-1 split.

Stocks at or near their all-time high are often described as in price discovery, because there are no historical sellers above the current price for the chart to anchor against. That language is descriptive, not predictive: some names break out of a long high and continue higher, others fail at the high and roll back. The opposite measure is the all-time low, which is less commonly cited and tends to come up only on stocks under significant distress.

Bid and Ask

The bid is the highest price a buyer will pay right now; the ask is the lowest price a seller will accept. The gap between them is the spread.

At any moment, the order book for a stock has a best bid (the highest price a buyer is currently willing to pay) and a best ask (the lowest price a seller is currently willing to accept). The gap between them is called the bid-ask spread.

Liquid stocks with heavy trading have tight spreads, often a penny or two. Thinly traded stocks, including most penny stocks and many small over-the-counter names, can have spreads of several percent. A wide spread is a quiet sign that a stock is hard to trade in size without moving the price against yourself.

Liquidity

How easily a stock can be bought or sold in size without moving its price. Heavy daily volume and a tight bid-ask spread are the two clearest signs of a liquid stock.

Liquidity is how easily you can buy or sell a stock without your own order pushing the price against you. The two everyday measures are average daily trading volume (how many shares change hands in a typical session) and the bid-ask spread (how wide the gap is between the highest current buy order and the lowest current sell order). High volume and a penny-or-two spread describe a liquid stock; thin volume and a spread of several percent describe a thinly traded one.

Low liquidity is one of the recurring themes in SEC and FINRA investor-protection guidance because it changes the risk profile of a position in two ways. A single moderately sized order can move the price of a thinly traded stock several percent in either direction, so the entry price you see on screen is not always the price you actually get; and getting out cleanly in a hurry can be hard, since there may not be a buyer at the price you want. Penny stocks, OTC names, low-float micro caps, and many recent IPOs sit at the thin end of this spectrum, which is why they are the stocks the community guidelines and the ticker-page risk asides flag for extra caution.

Volatility

A measure of how much and how quickly a stock's price moves up and down over time.

Volatility describes how much and how quickly a stock's price moves over a given window. A stock that swings four percent in a typical day is more volatile than one that swings half a percent. Volatility is usually measured as the standard deviation of recent returns, then annualized.

Higher volatility is not the same as higher risk in every sense, but it does mean wider possible outcomes over short windows. Penny stocks, recent IPOs, biotech names with pending clinical results, and heavily shorted micro caps tend to be the most volatile. Calm, beginner-friendly investing usually starts with lower-volatility names and adds higher-volatility positions deliberately, not as the default.

Bull and Bear Markets

A bull market is a sustained rise in prices; a bear market is a sustained decline, typically 20 percent or more from a recent peak.

Bull market and bear market describe the broad direction of stock prices over months or years. A bull market is a long stretch of rising prices and general optimism; a bear market is a sustained decline, usually defined as a drop of 20 percent or more from a recent high. The terms are most often applied to broad indexes like the S&P 500, not to individual stocks.

These labels are descriptive, not predictive. A bull market does not mean every stock goes up, and a bear market does not mean every stock goes down. Be careful with posts that use the terms aggressively, especially anything claiming a market turn is guaranteed or imminent.

IPO

Initial Public Offering: the first time a private company sells shares to the public on a stock exchange.

An initial public offering, or IPO, is the first time a private company sells shares of itself to the public on a stock exchange. The IPO price is set in advance through an underwriting process; the first trading day price is set by the market and can be very different.

IPO stocks are often volatile in their first months of trading. Lock-up periods, typically 90 to 180 days, restrict early investors and employees from selling, so price action right after a lock-up expires can be sharp. Treat the early life of a freshly public company as a high-uncertainty window, not a baseline.

ETF

Exchange-Traded Fund: a basket of investments that trades on an exchange like a single stock.

An exchange-traded fund, or ETF, is a basket of investments (stocks, bonds, commodities, or other assets) packaged into a single security that trades on an exchange just like a stock. SPY tracks the S&P 500, QQQ tracks the Nasdaq-100, and there are thousands of others targeting sectors, themes, countries, and strategies.

ETFs typically have low expense ratios and can be bought and sold throughout the trading day. Discussions on TickerPosts treat ETFs the same as individual stocks: a ticker page, a chart, a comment thread. The same caution applies, though. Thinly traded niche ETFs can move sharply and are sometimes used as theme-tagged pump vehicles.

Diversification

Spreading money across different stocks, sectors, and asset types so that no single investment can sink the overall result.

Diversification is the practice of spreading money across a range of investments instead of concentrating it in one stock, one industry, or one type of asset. The idea is that a problem at any single company, or a downturn in any single sector, has a smaller effect on the overall portfolio because the other holdings continue on their own paths. For beginners it is often the first risk-management concept worth understanding, because one of the most common ways new investors lose serious money is putting too much of their savings into a single ticker.

In practice there are two common routes. The first is owning many individual stocks across different sectors so that no single name is more than a small slice of the portfolio. The second is owning a broad-market ETF such as one that tracks the S&P 500, which gives exposure to hundreds of companies in a single position. Both approaches reduce single-stock risk, but neither eliminates market risk: in a broad-market downturn most stocks fall together, and diversification cannot protect against that. There is no universally correct number of holdings to call a portfolio diversified, but a portfolio that depends almost entirely on the fate of one company or one theme is not diversified, however many tickers it nominally contains. The SEC and FINRA publish plain-English investor-education material on diversification that is worth reading once.

Related: ETF, Market Cap, Volatility, Beta, Penny Stock

OTC Markets

Over-the-counter markets, where stocks trade through dealer networks instead of on a major exchange like NASDAQ or NYSE.

Over-the-counter, or OTC, markets are venues where stocks trade through dealer networks rather than on a centralized exchange like NASDAQ or NYSE. OTC stocks are often smaller companies that do not meet the listing requirements of the major exchanges, or foreign companies that issue their primary listing elsewhere.

OTC stocks vary widely in quality. Some are well-established foreign companies with active U.S. trading; many are very small, illiquid, and reported on infrequently. The SEC and FINRA have repeatedly warned that the OTC and microcap end of the market is the most common venue for pump-and-dump schemes. Read carefully and use extra caution before acting on any OTC tip.

Stock Split

A change to the share count where each existing share is divided into multiple shares (or, in a reverse split, combined into fewer), without changing the total company value.

A stock split is a corporate action that changes the share count. In a 2-for-1 split, every shareholder now owns twice as many shares and the share price is halved. In a 10-for-1 split, the share count goes up tenfold and the price drops to a tenth. The total dollar value of each shareholder's position does not change at the moment of the split.

Splits are usually done to keep the share price in a range that is easy to trade. The opposite move, a reverse split, reduces the share count and raises the per-share price. Reverse splits are common at struggling small caps trying to stay above the $1 minimum bid required by major exchanges, and they are not on their own a sign that the underlying business has improved.

Beta

A single number that compares how much a stock has historically moved relative to a broad market index, with 1.0 meaning roughly in line with the index.

Beta is a single number that compares how much a stock has historically moved relative to a broad market index, usually the S&P 500. A beta of 1.0 means the stock has moved roughly in line with the market. A beta of 1.5 means it has tended to move about 50 percent more in either direction; a beta of 0.5 means about half as much. Beta is usually calculated from past returns over the last two or three years.

Beta is a context number, not a prediction. A stock with a beta of 2.0 can still fall on a day when the market rises, and a low-beta utility can drop sharply on company-specific news. Use beta to set rough expectations about typical day-to-day swings, not as a guarantee about how a stock will behave in the next move. A negative beta, which is uncommon for individual stocks, would mean the stock has tended to move opposite the market.

Federal Reserve

The central bank of the United States, responsible for monetary policy, bank supervision, and the smooth operation of the payments system.

The Federal Reserve (often shortened to the Fed) is the central bank of the United States. It has three main jobs: setting monetary policy to pursue the dual mandate of stable prices and maximum employment, supervising and regulating banks to keep the financial system safe, and operating parts of the payment system that move dollars between banks. The Fed's primary monetary-policy tool is the federal funds rate, the overnight interest rate banks charge each other on reserve balances; it is set by the twelve-member Federal Open Market Committee (FOMC) at eight scheduled meetings per year, with rate decisions announced at 2:00 PM Eastern Time on the second day of each meeting.

Fed decisions move markets because they ripple through every other interest rate in the economy: Treasury yields, mortgage rates, auto loans, credit cards, corporate borrowing, and the discount rate analysts use to value future cash flows. A surprise rate cut typically lifts stock prices and bond prices (lower rates make future cash flows worth more today); a surprise rate hike typically pressures both. The FOMC also publishes the Summary of Economic Projections (the 'dot plot') four times a year showing each member's forecast for the funds rate in coming years; markets parse the dot plot closely as a signal of the policy path. The Fed Chair gives a press conference 30 minutes after each rate announcement, and the wording of those remarks frequently moves prices more than the rate decision itself.

Yield Curve

A line plotting U.S. Treasury yields against time to maturity, showing how the market is pricing short, medium, and long-term government borrowing.

The yield curve is a line plotting the current yield on U.S. Treasury securities against time to maturity, from the 1-month bill through the 30-year bond. The shape of the curve summarizes how the market is pricing short-term, medium-term, and long-term federal borrowing at the same moment. A normal curve slopes upward, reflecting the typical premium investors charge for tying up money longer. A flat curve has similar yields across maturities; an inverted curve has higher short-term yields than long-term yields. Each shape carries a different message about market expectations for inflation, growth, and Federal Reserve policy.

An inverted curve is the most-watched single signal in the bond market because every U.S. recession since the 1960s has been preceded by an inversion of the 10-year Treasury yield over the 2-year (with a 6-to-24-month lag, not an immediate effect). The inversion is not a recession itself; it reflects investors expecting the Fed to cut rates in the future, which usually only happens when growth has slowed. That said, yield-curve signals are noisy and a single observation does not guarantee anything; the broader macroeconomic picture matters too. The curve is also the reference for pricing corporate bonds, mortgage rates, auto loans, and most other consumer and business borrowing, so movements in the curve flow through to the real economy on a multi-month lag.

Related: Volatility, Beta, Earnings Call

Quiet Period

The window before an IPO and before each quarterly earnings release when company executives are restricted from publicly discussing the upcoming financial results.

Quiet period is a U.S. securities-law concept that comes up in two distinct contexts. Before an IPO, the SEC restricts what the company and its underwriters can say publicly about the offering between the filing of the registration statement (the S-1) and a window after the stock starts trading; the goal is to prevent hyped marketing in the prospectus-only zone where investors are supposed to rely on the filed disclosure rather than press interviews. Before quarterly earnings, listed companies typically observe a self-imposed quiet period in the few weeks leading up to the earnings release where executives and investor-relations staff stop talking publicly to analysts and reporters about the upcoming print, so the company does not selectively disclose financial information ahead of the official press release that all investors see at the same time.

The earnings-side quiet period is policy rather than regulation; it is the company's voluntary way of complying with Regulation Fair Disclosure (Reg FD), which prohibits selective disclosure of material non-public information to favored investors. A reader who notices that management has gone quiet four weeks before an earnings date is not seeing a warning sign; that is the normal pre-earnings posture for most large U.S. companies. The IPO-side quiet period IS regulation under the Securities Act of 1933 and the SEC enforces it; a company that violates it can have to delay its offering or update its prospectus.

Earnings Call

A scheduled audio briefing where a company's leadership discusses the quarter's results, usually held the same day the earnings report is released.

An earnings call is a scheduled audio briefing where a public company's leadership discusses the quarter's results with analysts and investors. Most U.S. companies hold one every three months, on or near the day they release their earnings report. The call typically opens with prepared remarks from the CEO and CFO, then moves into a question-and-answer session with sell-side analysts.

The transcript often moves the stock more than the headline earnings number. Forward-looking guidance, commentary on margins, and answers to specific analyst questions are where the real news usually lives. Public companies are required to make a recording or transcript available to anyone, so you can read or listen to the call without paying for a service. Look for the investor relations page on the company's own website.

Earnings Beat and Miss

When a company's reported earnings come in higher than the analyst consensus estimate, it is called a beat; when they come in lower, it is called a miss.

An earnings beat means a company's reported quarterly earnings, usually measured as earnings per share, came in higher than the consensus estimate analysts had published before the report. A miss means they came in lower. The consensus is the average of estimates from sell-side analysts who cover the stock, and it is the number the financial press points at when it says a quarter beat or missed expectations.

A beat or a miss does not directly tell you whether the stock will go up or down on the report. A company that beats on earnings but lowers its forward guidance often falls anyway, and one that misses but raises guidance can rise. The headline number is also affected by share buybacks, one-time items, and the difference between GAAP and non-GAAP earnings, so two beats are not always comparable. Treat the beat-versus-miss label as the first sentence of the story, not the whole story.

Earnings Guidance

A company's forward-looking statement on what it expects to earn over a future period, usually issued on or near an earnings report.

Earnings guidance is the forward-looking range a company publishes for what it expects to earn (or what it expects revenue, margins, or operating profit to be) over the upcoming quarter or full fiscal year. Guidance is typically issued in the earnings press release, restated on the conference call, and updated mid-quarter only when a material event happens. Public companies are not required to issue guidance, and a meaningful minority of large U.S. companies have stopped issuing quarterly guidance entirely.

Guidance often moves the stock more than the headline beat or miss on the just-reported quarter. A company that beats earnings but lowers forward guidance frequently sells off; one that misses but raises guidance can rise. The reason is that the price reflects expectations about future earnings, not the past, and guidance is the cleanest source of the company's own view of those future earnings. Guidance is also frequently sandbagged: companies often set the bar low enough that they can beat it. Read guidance as one input among several, alongside the consensus estimate analysts publish independently.

Consensus Estimate

The average of the published forecasts from sell-side analysts who cover a stock, used as the benchmark a quarterly earnings report is judged against.

A consensus estimate is the average of the forecasts published by the sell-side analysts who cover a stock. It is most commonly cited for quarterly earnings per share and revenue, but analysts also publish estimates for next-quarter guidance, full-year results, and other line items. The consensus is the benchmark the financial press uses to decide whether a quarter beat or missed expectations.

The consensus is a moving target. Analysts revise their numbers in the days leading up to a report based on company guidance, peer results, and macro data, and the published consensus on the morning of an earnings release can be meaningfully different from the consensus a month earlier. There is also a less formal whisper number that traders use, which is the unofficial estimate that has spread through the market and may sit above or below the published consensus. A company that beats the published consensus but misses the whisper number can still see the stock fall on the print.

Moving Average

A smoothed line on a stock chart showing the average price over a recent window, used to filter out day-to-day noise and see the underlying trend.

A moving average is a line plotted on a stock chart showing the average closing price over a fixed window, with the window sliding forward each new trading day. A 50-day moving average shows the average of the last 50 closes; a 200-day moving average shows the last 200. The line moves and smooths as new prices come in and old ones drop off.

Moving averages are used to filter out day-to-day noise and see the underlying trend. Common patterns traders watch include the price crossing above or below a key average, and the 50-day crossing the 200-day (sometimes called a golden cross or death cross). Like every chart indicator, moving-average signals fail regularly and are best read as one input among several rather than as a standalone reason to act.

Related: RSI, MACD, 52-Week High and Low, Beta

After-Hours and Premarket Trading

Trading sessions before the regular market opens or after it closes, run on electronic networks with lighter volume and wider bid-ask spreads.

Regular U.S. stock trading runs from 9:30 AM to 4:00 PM Eastern Time, Monday through Friday. Premarket trading typically runs from 4:00 AM to 9:30 AM ET, and after-hours trading from 4:00 PM to 8:00 PM ET. These sessions run on electronic communication networks rather than the main exchange floor, and not every brokerage gives clients access to the full extended-hours window.

Volume is much lighter in the extended sessions, bid-ask spreads are wider, and prices can move sharply on small order size. Earnings reports and major news are often released after the close or before the open, which is why the biggest single-day moves on a stock often happen in extended hours and then fade or extend once the regular session begins. Treat overnight headlines and extended-hours quotes as preliminary, not as the next regular-session open price.

Limit Order and Market Order

A market order buys or sells right away at whatever price is available; a limit order sets the highest price you will pay or the lowest you will accept.

A market order tells your broker to buy or sell a stock right away at whatever price is available in the market. It is the fastest way to get filled, but on a thinly traded stock or in the extended sessions the actual fill price can be very different from the last quote you saw on the screen.

A limit order sets a cap. A buy limit at $50 will only fill at $50 or below; a sell limit at $50 will only fill at $50 or above. Limit orders trade certainty of price for certainty of fill: if the market never reaches your limit, the order does not execute. For low-volume stocks, penny stocks, and any order placed outside regular trading hours, limit orders are usually the safer default.

Stop Loss Order

A standing order to sell a stock automatically once it falls to a chosen trigger price, used to cap how much a position can lose.

A stop loss order is a standing instruction to your broker to sell a stock if the price falls to a trigger you set in advance. The order sits inactive until the trigger is hit, then converts into a market order to sell. Traders use stop losses to put a ceiling on how much a position can lose without having to watch the screen.

A stop loss is not a guaranteed price. In a fast-moving market, an overnight gap, or extended-hours trading, the actual fill can be well below the trigger you set. A stop limit order is a stricter variant that converts into a limit order instead of a market order, which prevents a bad fill but creates the opposite risk: if the price falls straight through the limit, the order does not execute at all. A trailing stop loss moves the trigger up automatically as the stock rises, locking in unrealized gains while still capping the downside.

10-K (Annual Report)

A public company's required annual report to the SEC, with audited financial statements, a description of the business, risk factors, and management discussion.

A 10-K is the annual report that every U.S. publicly traded company is required to file with the Securities and Exchange Commission. It typically runs to a hundred pages or more and is the most complete picture of a company you can read for free. The audited financial statements, the description of the business and its competitors, the risk factors section, and the management discussion and analysis (often shortened to MD&A) are all required parts.

The 10-K is filed once a year and is the primary source serious investors check before buying a stock. You can read any company's 10-K for free on the SEC's EDGAR system. The risk factors section is especially worth reading because it lists, in the company's own words, the things that could damage the business.

10-Q (Quarterly Report)

A public company's required quarterly report to the SEC, smaller than a 10-K and unaudited, filed for each of the first three quarters of the fiscal year.

A 10-Q is the quarterly report a U.S. publicly traded company files with the SEC after each of the first three quarters of its fiscal year. The fourth quarter is folded into the annual 10-K instead. A 10-Q is shorter than a 10-K and is reviewed rather than fully audited, but it contains the same headline numbers: revenue, net income, cash flow, share count, and a management discussion of the quarter.

10-Qs are the official source for quarterly numbers, separate from any earnings press release. The press release usually comes first, the 10-Q follows within forty-five days. Reading both is useful because the 10-Q has the full financial detail and any updates to risk factors that the press release leaves out.

8-K (Material Event Filing)

A short SEC filing a public company is required to make within four business days when something important happens between scheduled reports.

An 8-K is the short-form filing a U.S. public company is required to send the SEC when something material happens between scheduled reports. It must be filed within four business days. Common triggers are earnings releases, acquisitions, executive changes, bankruptcy, departures of auditors, changes to bylaws, and entry into or termination of major agreements.

8-Ks are where market-moving company news first becomes official, often before press coverage catches up. Each 8-K uses a numbered item code (Item 2.02 for earnings, Item 5.02 for executive changes, and so on), so you can scan a list of recent 8-Ks for the kind of event that interests you. Any 8-K is free to read on EDGAR.

Insider Trading and Form 4

Buying or selling of a company's stock by its officers, directors, or large shareholders, reported to the SEC on Form 4 within two business days.

Insider trading, in the legal sense, simply means buying or selling a company's stock by people who count as insiders: officers, directors, and shareholders who own more than ten percent of the stock. Every such trade must be reported to the SEC on a Form 4 within two business days of the transaction. This is the regular, lawful kind of insider trading. The illegal kind, where someone trades on material non-public information, is a separate concept and is what news headlines usually mean by the phrase.

Form 4 filings are public on EDGAR. Investors watch them as a soft signal: a chief executive buying shares with their own money is often read as a quiet vote of confidence, and a wave of selling by multiple officers is often read the other way. Be careful with the inference, though. Sales can be pre-scheduled under SEC Rule 10b5-1 plans set months in advance, and a single small purchase or sale rarely tells you much. Look at patterns over time rather than reacting to one filing.

DD (Due Diligence)

Community shorthand for the research a buyer does on a stock before placing an order: reading the filings, the financials, and the risk factors before reacting to a tip.

DD is community shorthand for "due diligence", the research a buyer does on a stock before placing an order. The phrase predates the internet and is borrowed from law and corporate finance, where it describes the investigation a buyer of an asset is expected to perform before committing money. On a stock forum, the question "did you do your DD?" is a check on whether you have read the filings, looked at the financials, and considered the bear case, or whether you are acting on a screenshot.

Practical DD on a public company starts with the 10-K and the most recent 10-Q on EDGAR, then the most recent earnings call, then the recent 8-K filings for material events, then insider Form 4 filings. Comment threads can be useful context but they are not a substitute for the primary sources. For a longer walkthrough, see the how-to-research-a-stock-before-buying guide on the blog.

HODL

Forum slang for holding a position through short-term volatility instead of selling. Originated as a typo of "hold" in a 2013 Bitcoin forum post.

HODL is forum slang for holding a position through short-term volatility instead of selling. The term originated as a typo of "hold" in a 2013 Bitcoin forum post and spread to retail stock discussion communities afterward. It is sometimes backronymed as "hold on for dear life", but the original spelling was an accident.

HODL describes behavior, not a strategy. Holding a quality position through a bad week and holding a failing position because you are unwilling to take a loss can look identical from the outside but lead to very different outcomes. Either decision should be made the same way: re-read the original thesis, check whether anything in the underlying business has changed, and size positions you can hold without panic-selling. Calling a stretch of holding HODL does not make the underlying decision better or worse.

FUD

Short for "fear, uncertainty, and doubt": bearish or pessimistic talk about a stock, sometimes used to dismiss legitimate concerns raised by other users.

FUD stands for "fear, uncertainty, and doubt". In stock-forum context it usually describes bearish or pessimistic posts about a stock that holders of that stock would prefer to ignore. The term has a longer history in the technology industry, where it described coordinated negative marketing by competitors.

Be careful with the "FUD" label on a discussion board. Real concerns about earnings, debt, dilution, regulatory risk, or insider selling are not FUD just because they are uncomfortable to read. Posts that respond to a sourced negative claim only by calling it FUD, without engaging with the underlying source, are often a sign that the bear case is harder to answer than the bulls want to admit. The healthier response is to read the source.

FOMO

Short for "fear of missing out": the emotional pressure to buy a stock because it has already moved up sharply and you do not want to be the one left out.

FOMO stands for "fear of missing out". On a stock forum it describes the emotional pressure to buy a stock that has already moved up sharply, driven less by analysis of the company and more by the worry of being the only person who failed to participate. FOMO buying tends to cluster near short-term highs, which is often the worst possible entry point.

The classic FOMO setup is a stock that has run fifty or a hundred percent in a few days, social media posts framing the move as the start of a much bigger run, and screenshots of other people's gains. The SEC and FINRA have repeatedly warned that this is the most common environment in which pump-and-dump promotion gains traction. The defense is to decide a position size and a maximum entry price before clicking buy, and to walk away from any pitch that depends on you acting before you have time to think.

Related: FUD, HODL, Pump and Dump, Bagholder

Bagholder

A trader still holding shares of a stock that has fallen sharply from where they bought, especially after the original thesis or the surrounding hype has faded.

Bagholder is community shorthand for a trader still holding shares of a stock that has fallen sharply from their purchase price, especially after the original thesis or the surrounding hype has faded. The image is of someone left holding a bag of merchandise nobody else wants. In a pump-and-dump, the bagholders are the late buyers who arrived during the pump and are still holding when the price collapses; in slower drawdowns the term applies to anyone holding a position deeply in the red.

Being a bagholder is not, on its own, a sign of bad analysis. Long-term investors hold through drawdowns of thirty to fifty percent during normal market cycles and still end up ahead. The deeper question is whether the original reason to own the stock is still valid. If the business has materially changed, the position is a loss to learn from; if the business is intact and the price drop is driven by short-term sentiment, holding can still be the right call. The community label is rougher than the underlying decision.

Related: HODL, FOMO, Penny Stock

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