What Happens to CBOE SKEW Index When the S&P 500 Drops 20%?
What happens when the stock market enters a bear market? Historical patterns, recovery timelines, asset class reactions, and what separates crashes that recover quickly from those that grind lower.
How CBOE SKEW Index Responds
Scenario Background
A 20% decline from the recent high is the technical definition of a bear market. Crossing this threshold is psychologically important: it triggers widespread media coverage, changes investor behavior, and often forces institutional rebalancing. But bear markets are not all created equal. Some are sharp, fast corrections that recover within months. Others are grinding, multi-year declines that destroy wealth and reshape economic policy.
Read full scenario analysis →Historical Context
Since 1950, the S&P 500 has experienced 11 bear markets. The mildest was the 2020 COVID crash (-34% in 23 trading days) which recovered in 5 months. The worst was the 2007-2009 financial crisis (-57% over 17 months, recovery took 5.5 years). The 2000-2002 dot-com bust (-49% over 30 months) recovered only in 2007 before the next crisis hit. The 2022 bear market (-25%) was the mildest recession-less bear market in modern history. The critical insight: buying at -20% has produced positive 3-year re...
What to Watch For
- •VIX exceeding 40 with record put volume, capitulation signal
- •Breadth indicators reaching extreme oversold levels (fewer than 10% of stocks above 50-day MA)
- •Credit spreads stabilizing after the initial blowout, indicates the credit cycle is not broken
- •Fed signaling emergency action or rate cuts, policy put is engaged
- •Insider buying surging, corporate executives buying their own stock at these levels
Other Assets When the S&P 500 Drops 20%
Other Scenarios Affecting CBOE SKEW Index
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