Market Crash
Quick Definition
A sudden, severe drop in stock prices, typically exceeding 20% in a short period, often driven by panic.
Key Takeaways
- A crash is a rapid 20%+ decline driven by panic selling and forced liquidation.
- Circuit breakers halt trading at −7%, −13%, and −20% to prevent cascading panic.
- Every major crash in history has been followed by recovery and new all-time highs.
What Is Market Crash?
A market crash is a rapid, dramatic decline in stock prices—usually exceeding 20%—occurring over days or weeks rather than the months typical of a bear market. Crashes are driven by panic selling, margin calls, forced liquidation, and a collapse in investor confidence. Notable crashes include Black Monday (October 19, 1987: −22.6% in one day), the Dot-Com Bust (2000-2002: −49%), the 2008 Financial Crisis (−57% peak-to-trough), and the COVID-19 crash (February-March 2020: −34% in 23 trading days). Crashes often feature circuit breakers—exchange-imposed trading halts triggered when indices fall 7%, 13%, and 20% in a single session. While terrifying in the moment, every major crash in history has eventually been followed by recovery and new all-time highs. The 2020 COVID crash, for example, bottomed on March 23 and the S&P 500 reached new highs by August. Crashes create extraordinary buying opportunities for investors with cash, long time horizons, and emotional discipline.
Market Crash Example
- 1On Black Monday (Oct 19, 1987), the DJIA fell 22.6% in a single day—the largest one-day percentage decline in history.
- 2The COVID-19 crash saw the S&P 500 drop 34% in 23 trading days, then recover to new highs within 5 months.
Related Terms
Market Correction
A decline of 10% to 20% from a recent market peak, considered a normal part of market cycles.
Bear Market
A prolonged period of declining asset prices, typically defined as a drop of 20% or more from recent highs, accompanied by widespread pessimism and negative investor sentiment.
Circuit Breaker
A regulatory mechanism that temporarily halts trading when the market experiences extreme price movements.
Volatility
A measure of how much and how quickly an asset's price fluctuates, indicating the degree of risk and uncertainty.
Stock
A security representing ownership in a corporation, entitling the holder to a share of profits and voting rights.
Initial Public Offering (IPO)
The first sale of a company's stock to the public, transitioning it from private to publicly traded.
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