Market Crash

What is Market Crash? — Definition

A crash differs from a bear market mainly in speed. Bear markets tend to develop over months; crashes happen in days or weeks. Famous crashes include Black Monday (October 19, 1987, -22.6% in one day), the dot-com implosion (2000–2002, -78% in Nasdaq), the 2008 financial crisis, and the COVID-19 crash (March 2020, -34% in 33 days).

Crashes are almost impossible to predict precisely, but they share common preconditions: excessive valuations, high leverage, speculative euphoria, and then a catalyst that breaks confidence. Once panic sets in, margin calls and forced selling can accelerate the decline far beyond what fundamentals justify.

Example

During the 2008 financial crisis, major bank stocks like Citigroup fell over 90% from peak to trough. A $100,000 investment became $10,000. For investors with cash ready, the same crisis offered the buying opportunity of a generation — the S&P 500 rose over 400% in the next decade.

The BMInsider Fear & Greed Index tracks multiple market signals in real time — during crashes, it reliably hits 'Extreme Fear' levels that historically have marked or been near major market bottoms.