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Stock market glossary

The terms used across this site, explained in plain English with why each one matters.

Valuation

Fundamentals

Quality

Income

  • Dividend Yield
    Annual dividends per share divided by the share price.
  • Ex-Dividend Date
    The first trading day on which a buyer of the stock will NOT receive the next dividend.
  • Payout Ratio
    Dividends per share divided by earnings per share.
  • Record Date
    The date on which a company checks its books to see who is owed the dividend.
  • Share Buyback
    A company purchasing its own shares in the market.

SEC Filings

  • Form 10-K
    The annual report every US public company files with the SEC.
  • Form 10-Q
    The quarterly report US public companies file for the first three quarters of each fiscal year.
  • Form 4 (Insider Transactions)
    The filing officers, directors and 10% owners must make within two business days of trading their company's stock.
  • Form 8-K
    A 'current report' a company must file within four business days of a material event.
  • Insider Trading (Legal)
    Company insiders buying or selling their own company's stock and reporting it to the SEC.
  • Proxy Statement (DEF 14A)
    The document sent to shareholders before the annual meeting.
  • Regulation FD
    The SEC rule requiring companies to share material information with all investors at the same time.
  • Rule 10b5-1 Trading Plan
    A pre-arranged plan that lets insiders trade on a fixed schedule.
  • Schedule 13D
    A filing required when an investor acquires more than 5% of a company with intent to influence it.

Technical Analysis

  • Average True Range (ATR)
    The average daily trading range, including overnight gaps, usually over 14 days.
  • Bollinger Bands
    A 20-day moving average with bands two standard deviations above and below it.
  • Breakout
    A close beyond a defined support or resistance level, ideally on rising volume.
  • Chart Pattern
    A recognisable shape in price history — triangles, flags, head and shoulders — that traders use to anticipate the next move.
  • Death Cross
    The 50-day moving average crossing below the 200-day moving average.
  • Golden Cross
    The 50-day moving average crossing above the 200-day moving average.
  • MACD
    Moving Average Convergence Divergence: the 12-day EMA minus the 26-day EMA, with a 9-day signal line.
  • Moving Average
    The average closing price over a set number of days, recalculated each day.
  • Relative Strength Index (RSI)
    A 0–100 momentum oscillator comparing recent gains with recent losses.
  • Support and Resistance
    Price zones where buying (support) or selling (resistance) has repeatedly stopped a move.

Market

  • Advance-Decline Line
    A running total of advancing stocks minus declining stocks each day.
  • ETF (Exchange-Traded Fund)
    A fund that holds a basket of securities and trades on an exchange like a stock.
  • Market Breadth
    How many stocks are participating in a market move.
  • S&P 500
    An index of 500 of the largest US companies, weighted by market capitalization.
  • Seasonality
    Recurring patterns in returns at particular times of the year.
  • Sector Rotation
    Money moving from one group of industries to another as the economic cycle and sentiment change.
  • VIX (Volatility Index)
    The market's expectation of S&P 500 volatility over the next 30 days, derived from option prices.

Risk

  • Beta
    How much a stock tends to move for each 1% move in the overall market.

Investing

  • CAGR
    Compound annual growth rate: the steady yearly rate that turns a starting value into an ending value.
  • Compound Interest
    Earning returns on your previous returns as well as on your original money.
  • Dollar-Cost Averaging
    Investing a fixed amount at regular intervals regardless of price.