Investing glossary
52 terms covering valuation, returns, risk and market structure, with formulas where they apply.
Financial analysis
Reading the P&L, Balance Sheet, and Cash Flow Statement.
- WACC
Weighted Average Cost of Capital. The average interest rate a company pays to finance itself.
Formula: (Eq% * CostEq) + (Debt% * CostDebt * (1-Tax))
The hurdle rate. If a project returns less than WACC, it destroys value.
- EBITDA
Earnings Before Interest, Taxes, Depreciation, and Amortization. A proxy for raw operating cash flow.
Useful for comparing companies with different debt/tax structures, but ignores the cost of assets (Capex).
- Free Cash Flow (FCF)
The actual cash a company generates after spending money to maintain its asset base.
Formula: OperatingCashFlow - CapitalExpenditures
Cash is king. Dividends and buybacks are paid from FCF, not 'Net Income'.
- EPS (Earnings Per Share)
The portion of a company's profit allocated to each share.
Formula: NetIncome / SharesOutstanding
The primary driver of stock prices in the long run.
- Gross Margin
The percentage of revenue retained after direct costs of goods sold (COGS).
Formula: (Revenue - COGS) / Revenue
High gross margins (e.g., Software > 80%) indicate a strong competitive moat.
- Working Capital
A measure of a company's short-term liquidity.
Formula: CurrentAssets - CurrentLiabilities
Positive is good. Negative implies the company may struggle to pay bills soon.
Valuation multiples
Metrics to determine if a stock is cheap or expensive.
- P/E Ratio
Price-to-Earnings. How much you pay for $1 of earnings.
Formula: SharePrice / EPS
High P/E (>30) implies high growth expectations. Low P/E (<10) implies value or decline.
- PEG Ratio
P/E Ratio adjusted for Growth. Helps find 'Growth at a Reasonable Price' (GARP).
Formula: PE / AnnualGrowthRate
PEG < 1 is undervalued. PEG > 2 is expensive.
- EV / EBITDA
The Enterprise Value divided by EBITDA. The standard valuation metric for M&A.
Better than P/E for comparing companies with different levels of debt.
- Price to Book (P/B)
Market value vs Net Asset Value.
Formula: Price / BookValuePerShare
Crucial for Banks and Real Estate. Irrelevant for Tech (which has few tangible assets).
Portfolio theory
Risk, return, and diversification concepts.
- Sharpe Ratio
Measures risk-adjusted performance.
Formula: (Return - RiskFree) / Volatility
A ratio > 1.0 is good. It exposes funds that generate returns simply by taking excess risk.
- Alpha
The excess return of an investment relative to the return of a benchmark index.
If the market did 10% and you did 12%, your Alpha is +2%.
- Beta
A measure of volatility relative to the market.
Beta = 1.0 (Moves with market). Beta = 1.5 (50% more volatile). Beta < 1 (Defensive/Stable).
- Correlation
How two assets move together (-1 to +1).
Diversification only works if assets are not perfectly correlated. If everything falls together, you aren't diversified.
Trading mechanics
How markets function, order types, and liquidity.
- Short Selling
Borrowing shares to sell them now, hoping to buy them back cheaper later.
Profit from price drops. Infinite risk (price can go up forever).
- Bid-Ask Spread
The difference between the highest price a buyer offers (Bid) and lowest price a seller accepts (Ask).
A wide spread means low liquidity. You lose money instantly upon buying.
- Limit Order vs Market Order
Market Order: Buy immediately at any price. Limit Order: Buy only at a specific price or better.
Always use Limit Orders in volatile markets to avoid bad fills.
- Margin
Borrowed money used to purchase securities.
Magnifies gains and losses. Can lead to a 'Margin Call' where you are forced to sell assets.
Derivatives
Options, Futures, and hedging instruments.
- Call Option
A contract giving the right (but not obligation) to BUY a stock at a set price.
A bullish position: it gains when the price rises.
- Put Option
A contract giving the right (but not obligation) to SELL a stock at a set price.
A bearish bet or insurance. You profit if the price crashes.
- Strike Price
The pre-agreed price at which the option can be exercised.
If stock price is above Strike, a Call option is 'In The Money'.
Macroeconomics
The big picture forces moving markets.
- Inflation (CPI)
The rate at which prices rise. Erodes the purchasing power of cash.
The enemy of bonds. Stocks can sometimes pass on inflation costs; bonds cannot.
- Fed Funds Rate
The base interest rate set by the Central Bank.
The 'Gravity' of finance. When rates rise, asset prices (Stocks, Real Estate) generally fall.
- Yield Curve
A line plotting yields of bonds having equal credit quality but differing maturity dates.
Inverted Yield Curve (Short term rates > Long term rates) has predicted every recession since 1950.
- Quantitative Easing (QE)
Central banks printing money to buy assets, injecting liquidity into the economy.
Generally boosts asset prices but risks inflation.
- GDP (Gross Domestic Product)
The total value of goods and services produced in a country over a period.
Two consecutive quarters of negative GDP growth typically defines a recession.
- Unemployment Rate
The percentage of the labor force that is jobless and actively seeking work.
A lagging indicator: it often peaks after a recession has already begun.
- PMI (Purchasing Managers Index)
A survey-based indicator of manufacturing and services sector health.
Above 50 = expansion. Below 50 = contraction. A leading indicator.
Valuation methods
Techniques for determining intrinsic value.
- DCF (Discounted Cash Flow)
Valuation method that projects future cash flows and discounts them to present value.
Formula: Value = Σ(FCF / (1+r)^n) + Terminal Value
The standard method for intrinsic valuation. Highly sensitive to growth and discount rate assumptions.
- Terminal Value
The value of a business beyond the explicit forecast period in a DCF.
Formula: FCF * (1+g) / (r-g) [Gordon Growth]
Often 60-80% of total DCF value. Small changes in assumptions dramatically affect results.
- Comparable Company Analysis
Valuing a company by comparing it to similar publicly traded companies.
Quick and market-based, but assumes comparables are fairly valued.
- Precedent Transactions
Valuing a company based on what similar companies sold for in M&A deals.
Includes control premiums, so typically higher than trading multiples.
- Sum of the Parts (SOTP)
Valuing each business segment separately and adding them together.
Used for conglomerates. Often reveals 'hidden value' in underappreciated divisions.
- NAV (Net Asset Value)
The total value of assets minus liabilities, divided by shares outstanding.
Formula: (Total Assets - Total Liabilities) / Shares
Primary valuation for REITs, closed-end funds, and asset-heavy businesses.
Return & risk metrics
Measuring performance and risk-adjusted returns.
- CAGR (Compound Annual Growth Rate)
The smoothed annualized growth rate over a period.
Formula: (Ending Value / Beginning Value)^(1/Years) - 1
Useful for comparing growth rates across different time periods.
- Sortino Ratio
Like Sharpe Ratio but only penalizes downside volatility.
Formula: (Return - RiskFree) / Downside Deviation
Better for asymmetric returns since it ignores upside volatility.
- Maximum Drawdown
The largest peak-to-trough decline in portfolio value.
Measures worst-case loss. A 50% drawdown requires 100% gain to recover.
- Treynor Ratio
Risk-adjusted return using beta instead of total volatility.
Formula: (Return - RiskFree) / Beta
Best for evaluating diversified portfolios where unsystematic risk is minimized.
- Information Ratio
Active return divided by tracking error vs benchmark.
Formula: (Portfolio Return - Benchmark Return) / Tracking Error
Measures consistency of outperformance. Higher is better.
- Value at Risk (VaR)
The maximum loss expected over a given time period at a confidence level.
e.g., '95% VaR of $1M' means 95% confident losses won't exceed $1M.
Investment strategies
Approaches to building and managing portfolios.
- Dollar Cost Averaging (DCA)
Investing a fixed amount at regular intervals regardless of price.
Reduces timing risk and emotional decision-making. Best for long-term investors.
- Value Investing
Buying stocks trading below their intrinsic value with a margin of safety.
Pioneered by Graham & Dodd. Requires patience and contrarian thinking.
- Growth Investing
Buying stocks with above-average growth potential, often at premium valuations.
Focuses on revenue/earnings growth rather than current valuation.
- Momentum Investing
Buying assets that have been rising, selling those falling.
Based on the tendency of trends to persist. Requires disciplined exits.
- Index Investing
Passive strategy that tracks a market index like the S&P 500.
Low cost, tax efficient. Outperforms most active managers over time.
- Factor Investing
Targeting specific drivers of return: value, momentum, quality, size, low volatility.
Systematic approach to capturing risk premiums across asset classes.
Fixed income
Bonds, yields, and credit markets.
- Coupon Rate
The annual interest payment as a percentage of the bond's face value.
A 5% coupon on a $1,000 bond pays $50 per year.
- Yield to Maturity (YTM)
The total return expected if the bond is held until maturity.
Accounts for coupon payments, current price, and time to maturity.
- Duration
A measure of a bond's sensitivity to interest rate changes.
A duration of 5 means a 1% rate rise causes ~5% price drop.
- Credit Spread
The yield difference between a corporate bond and a government bond of same maturity.
Wider spreads indicate higher perceived default risk.
- Investment Grade
Bonds rated BBB-/Baa3 or higher by major rating agencies.
Lower risk, lower yield. Many institutions can only hold investment grade.
- High Yield (Junk Bonds)
Bonds rated below investment grade (BB+/Ba1 or lower).
Higher default risk but significantly higher yields. Behave more like equities.