Most stock market glossaries are bad. They define a term in 20 words, give you a textbook formula, and move on — leaving you no better at actually using the concept than you were before. This is the opposite of that. Each term below links to a 1,400-word plain-English explainer with real examples, the gotchas nobody mentions, and how to actually apply it. Where the term has a free tool tied to it, the tool is one click away.
Valuation
PE Ratio
What you pay for every dollar of a company's annual earnings. The most-quoted valuation metric, and the most-misread.
EBITDA
Earnings Before Interest, Taxes, Depreciation, and Amortization. Wall Street's favorite profit number, and Charlie Munger's least.
ROIC
Return on Invested Capital. The single best metric for how efficiently a business turns capital into profit.
Income & Dividends
Filings & Reporting
Bonds & Interest Rates
Risk-Free Rate
The return you get for taking no risk — the hurdle every other investment has to clear.
Yield Curve
The bond market's economic forecast in one line. Inverted = recession warning.
Fed Funds Rate
The single interest rate that ripples through every other rate in the world.
10-Year Treasury Yield
The most-watched interest rate in the world. Live data + full explainer.
Indices
More terms coming. If there's a concept you wish was here, let us know via the export data page.