Market Capitalization

Market capitalization (market cap) is the total market value of all a company's outstanding shares: share price × total shares outstanding. It is the most widely used metric for categorizing companies by size and is a key determinant of a stock's liquidity, volatility profile, and typical catalyst response characteristics.

Market Cap Tiers

Micro-cap: Under $300M. Extremely high volatility, low liquidity, wide bid-ask spreads. Catalyst moves can be 30–100%+ intraday on major news. Susceptible to manipulation; requires careful risk management.

Small-cap: $300M–$2B. High volatility, moderate liquidity. Catalyst moves of 10–40% on significant news events are common. The primary target tier for active catalyst traders seeking large percentage moves.

Mid-cap: $2B–$10B. Moderate volatility and liquidity. Catalyst moves are typically 5–20% on major events. More institutional coverage and analyst following than small-caps.

Large-cap: $10B+. High liquidity, lower volatility. Major catalysts may produce 3–10% moves. Difficult to generate outsized returns from catalyst trading due to high market efficiency and deep analyst coverage.

Market Cap and Catalyst Trading

Small-cap and micro-cap stocks produce the largest percentage catalyst moves because: fewer institutional analysts cover them (lower pre-event pricing efficiency), they have lower float (fewer shares available to absorb buying pressure), and their option markets are less efficient at pricing anticipated moves. TradeAI News's Small-Cap Alerts service focuses specifically on small-cap and micro-cap catalysts where the TMS engine consistently identifies the largest edge opportunities.