Investing Dictionary
Every term explained in plain English
106 terms
52-Week High
ChartsThe highest price a stock has been in the last year
After-Hours Trading
BasicsTrading after the market closes at 4 PM ET
Analyst Consensus
Company HealthThe average opinion of professional stock analysts
Average True Range
ChartsHow much a stock typically moves in a day
Balance Sheet
Company HealthA snapshot of everything a company owns and owes
Bear Market
BasicsWhen stocks are falling
Beta
RiskHow much a stock moves compared to the overall market
Bid-Ask Spread
BasicsThe gap between what buyers offer and what sellers want
Black Swan
RiskA rare, unpredictable event that causes massive market disruption
Blue Chip Stock
BasicsA large, stable, well-known company with a long track record
Bollinger Bands
ChartsLines around a stock's price showing its normal range
Bond
Options & BondsA loan you give to a company or government that pays you interest
Book Value
Company HealthWhat a company is worth on paper if you sold everything and paid all debts
Breakout
ChartsWhen a stock bursts above a resistance level
Broker
BasicsThe app or platform where you buy stocks
Bull Market
BasicsWhen stocks are going up
Buy and Hold
StrategiesBuy stocks and keep them for years
Buyback
BasicsWhen a company buys back its own shares
Call Option
Options & BondsA contract giving you the right to buy a stock at a set price
Candlestick
ChartsA chart shape that shows a stock's price movement in a time period
Concentration Risk
RiskToo much money in one stock, sector, or asset type
Contrarian Investing
StrategiesBuying what everyone else is selling, and selling what everyone is buying
Correlation
RiskHow closely two investments move together
Counterparty Risk
RiskThe risk that the other side of a deal can't hold up their end
Covered Call
Options & BondsSelling someone else the right to buy your stock at a higher price
Credit Rating
Options & BondsA grade for how likely a borrower is to repay their debt
Cup and Handle
ChartsA bullish chart pattern shaped like a coffee cup
Day Trading
BasicsBuying and selling stocks within the same day
Death Cross
ChartsA bearish signal when a short-term average falls below a long-term one
Debt-to-Equity
Company HealthHow much a company borrowed vs. what it actually owns
Diversification
RiskNot putting all your eggs in one basket
Dividend
BasicsCash a company pays you just for owning their stock
Dividend Growth Investing
StrategiesInvesting in companies that consistently grow their dividend every year
Dollar-Cost Averaging
StrategiesInvest a fixed amount every month no matter what
Double Bottom
ChartsA "W" shaped pattern that signals a potential reversal upward
Drawdown
RiskHow much your investment dropped from its peak
DRIP
StrategiesAutomatically reinvesting dividends to buy more shares
Earnings Report
Company HealthA company's quarterly report card
EBITDA
Company HealthEarnings before interest, taxes, depreciation, and amortization
EPS
Company HealthHow much profit a company makes per share
ETF
BasicsA basket of many stocks in one
Expiration Date
Options & BondsThe last day an option can be used
Federal Reserve
BasicsThe US central bank that controls interest rates and the money supply
Fibonacci Retracement
ChartsKey price levels where a stock might pause or reverse
Forward P/E
Company HealthP/E ratio based on expected future earnings, not past ones
Free Cash Flow
Company HealthActual cash left after all expenses
Gap Up / Gap Down
ChartsWhen a stock opens much higher or lower than it closed
Going Long
BasicsBuying a stock expecting it to go up
Golden Cross
ChartsA bullish signal when a short-term average crosses above a long-term one
Gross Margin
Company HealthRevenue left after subtracting the direct cost of making the product
Growth Investing
StrategiesBuying companies growing fast even if expensive
Guidance
Company HealthA company's prediction for their own future performance
Head and Shoulders
ChartsA chart pattern that often signals a trend reversal
Hedge
RiskAn investment that offsets losses in another
Implied Volatility
Options & BondsThe market's expectation of how much a stock will move
Index
BasicsA scoreboard for a group of stocks
Index Investing
StrategiesBuying funds that track the whole market instead of picking stocks
Inflation
BasicsPrices rising over time, making your money worth less
Insider Trading (Legal)
StrategiesTracking what company executives are buying
IPO
BasicsWhen a company goes public for the first time
Leverage
RiskUsing borrowed money or financial instruments to amplify your investment
Limit Order
BasicsBuy or sell only at a specific price or better
Liquidity
BasicsHow easy it is to buy or sell something quickly
MACD
ChartsA momentum indicator showing when a trend might be changing
Margin
RiskBorrowing money from your broker to buy more stocks
Market Cap
BasicsTotal value of a company
Market Order
BasicsBuy or sell immediately at whatever price is available
Momentum Investing
StrategiesBuying stocks that are already going up
Moving Average
ChartsThe average price of a stock over a set number of days
Mutual Fund
BasicsA pool of money from many investors managed by a professional
Operating Income
Company HealthProfit from the core business before taxes and interest
P/E Ratio
Company HealthHow expensive a stock is compared to its profits
Penny Stock
BasicsA very cheap stock, usually from a tiny or risky company
Portfolio
BasicsAll your investments together
Position Sizing
RiskDeciding how much of your money to put in one stock
Pre-Market Trading
BasicsTrading that happens before the market officially opens
Price-to-Book (P/B)
Company HealthStock price vs. the company's net assets
Price-to-Sales (P/S)
Company HealthHow much investors pay for each dollar of a company's revenue
Profit Margin
Company HealthWhat percentage of revenue becomes actual profit
Put Option
Options & BondsA contract giving you the right to sell a stock at a set price
Rebalancing
StrategiesAdjusting your portfolio back to your target allocation
REIT
BasicsA company that owns real estate you can buy like a stock
Resistance Level
ChartsA price where a stock tends to stop rising
Return on Equity
Company HealthHow efficiently a company uses shareholder money to make profit
Revenue
Company HealthTotal money a company brings in
Risk/Reward Ratio
RiskComparing how much you could lose vs. how much you could gain
RSI
ChartsA score (0–100) showing if a stock is overbought or oversold
Sector
BasicsA group of companies in the same type of business
Sector Rotation
StrategiesMoving money between sectors depending on the economic cycle
Share
BasicsOne unit of a stock
Short Interest
RiskHow many people are betting a stock will fall
Short Selling
RiskBetting that a stock will go down
Stock
BasicsA tiny piece of ownership in a company
Stock Split
BasicsWhen a company divides its shares into more, cheaper pieces
Stop Loss
RiskAn automatic sell order if a stock drops too much
Strike Price
Options & BondsThe price at which an option lets you buy or sell
Support Level
ChartsA price where a stock tends to stop falling
Swing Trading
StrategiesHolding stocks for days to weeks to capture medium-term moves
Tax-Loss Harvesting
StrategiesSelling losing investments to reduce your tax bill
Ticker Symbol
BasicsThe short code used to identify a stock
Value Investing
StrategiesBuying stocks that are cheaper than they're worth
Volatility
RiskHow wildly a stock's price swings
Volume
ChartsHow many shares were traded today
Working Capital
Company HealthA company's short-term financial cushion
Yield
BasicsThe income you earn on an investment as a percentage
Yield Curve
Options & BondsA graph showing interest rates at different loan lengths
Definitions and explanations are for educational purposes only. Not financial advice. Finance concepts can have nuances beyond what is shown here — always consult authoritative sources and qualified professionals for decisions.