How Long Bear Markets Last
A bear market is conventionally defined as a decline of 20% or more from a recent peak in a broad stock market index. Since 1929, the S&P 500 has experienced approximately 14 bear markets, an average of roughly one every seven years. They have ranged from the COVID crash of 2020, which lasted just 33 days from peak to trough, to the post-1929 decline that lasted 34 months and erased 86% of the market's value. Understanding the historical distribution of bear market duration and severity is among the most practical things an investor can study, because it provides the context needed to make decisions during the next one.
The most important number is not the average decline or the average duration. It is the range. Bear markets vary enormously in their characteristics, and the factors that determine whether a downturn is brief and shallow or prolonged and severe are identifiable, at least in broad terms.
The Historical Record
The following data covers S&P 500 bear markets from 1929 to 2022.
The 1929-1932 bear market was the most severe, with a peak-to-trough decline of 86% lasting 34 months. The recovery time, measured as the period from the trough to a new all-time high, was approximately 25 years (though this included the interruption of World War II and a second bear market in 1937-1942).
The 1937-1942 bear market saw a decline of approximately 60% over 61 months, driven by premature fiscal tightening and the onset of World War II.
The 1968-1970 bear market produced a 36% decline over 18 months, associated with the Vietnam War, rising inflation, and social upheaval.
The 1973-1974 bear market was one of the more severe of the modern era, with a 48% decline over 21 months. The oil embargo, Watergate, and a deep recession all contributed.
The 1980-1982 bear market produced a 27% decline over 21 months as the Federal Reserve under Paul Volcker raised interest rates to nearly 20% to break inflation.
The 1987 bear market was swift and severe: a 34% decline in just 3 months. The recovery was equally swift, with the market fully recovering within roughly two years.
The 2000-2002 bear market, driven by the dot-com crash, produced a 49% decline over 25 months. The recovery took over five years from the trough.
The 2007-2009 bear market was the most severe since the Depression, with a 57% decline over 17 months. The full recovery to the October 2007 peak took approximately five and a half years.
The 2020 bear market was the shortest on record, with a 34% decline lasting only 33 days from peak to trough. The full recovery to a new all-time high took approximately five months.
The 2022 bear market produced a 25% decline over approximately 10 months, driven by the Federal Reserve's aggressive interest rate increases in response to inflation.
Average Statistics
Across all S&P 500 bear markets since 1929, the averages are approximately:
Peak-to-trough decline: roughly 36% (median closer to 33%).
Duration from peak to trough: roughly 12 to 14 months (median approximately 13 months).
Recovery time from trough to previous high: roughly 2 to 4 years for most bear markets (excluding the extreme case of 1929).
These averages mask enormous variation. The range of declines spans from 20% to 86%. The range of durations spans from 1 month to 34 months. The range of recovery times spans from 5 months to over 25 years. An investor who plans based on averages and experiences an outlier can be badly surprised.
What Determines Duration and Severity
The variation in bear market characteristics is not random. Several factors systematically influence how long a bear market lasts and how deep it goes.
The Nature of the Trigger
Bear markets triggered by external shocks (a pandemic, a geopolitical event) that do not damage the financial system tend to be shorter and less severe than those triggered by internal financial imbalances (credit bubbles, banking crises). The COVID crash lasted 33 days because the financial system was fundamentally sound and the policy response was rapid. The 2007-2009 crisis lasted 17 months because the financial system itself was broken and required years to repair.
This distinction is the most important predictor of bear market duration. External shocks cause temporary disruptions. Internal financial crises cause structural damage that takes time to heal. The presence or absence of a banking crisis is the single best indicator of whether a downturn will be prolonged.
Carmen Reinhart and Kenneth Rogoff, in their comprehensive study of financial crises, found that banking crises are followed by equity market declines lasting an average of 3.4 years and producing an average peak-to-trough decline of approximately 55%. Recessions without banking crises produce equity declines that are shorter and shallower.
The Policy Response
The speed and scale of monetary and fiscal policy responses significantly influence bear market duration. Aggressive rate cuts, quantitative easing, and fiscal stimulus can shorten the duration of a downturn by restoring confidence, providing liquidity, and supporting economic activity.
The COVID crash recovery was the fastest in history, in large part because the policy response was the largest and fastest in history. The Federal Reserve cut rates to zero and launched unlimited QE within weeks. Congress passed $2.2 trillion in fiscal stimulus within a month.
By contrast, the Federal Reserve's passive response during 1930-1933, and the premature fiscal tightening during the 1937 recession, prolonged and deepened those downturns. The European sovereign debt crisis was prolonged in part by the ECB's initially cautious response and by the eurozone's austerity policies.
Valuation at the Start
Bear markets that begin from elevated valuations tend to be more severe and longer-lasting than those that begin from moderate valuations. The Shiller CAPE ratio (cyclically adjusted price-to-earnings ratio) provides a measure of overall market valuation. Bear markets that began when the CAPE was above 25 (the 1929, 2000, and 2007 peaks) produced average declines of approximately 53%. Bear markets that began from more moderate valuations produced smaller declines.
This relationship exists because elevated valuations reflect optimistic expectations that are more likely to be disappointed, because the distance from peak valuation to fair value is greater, and because markets that have been driven to extreme levels by speculation tend to overshoot on the downside as well.
The State of the Business Cycle
Bear markets that coincide with economic recessions tend to be deeper and longer than those that do not. The 1987 crash did not coincide with a recession, and the market recovered within two years. The 2000-2002 and 2007-2009 bear markets both coincided with recessions, and the recoveries took five or more years.
An economic recession amplifies a stock market decline because it causes actual deterioration in corporate earnings, not just a revaluation of expectations. When both earnings and multiples decline simultaneously, the stock price impact is multiplicative.
Recovery Patterns
Bear market recoveries follow two general patterns.
V-shaped recoveries occur when the decline is driven by a shock that does not permanently damage the economy or financial system. The decline is sharp, the trough is brief, and the recovery is rapid. The 1987 crash and the 2020 COVID crash are the clearest examples.
L-shaped or U-shaped recoveries occur when the decline is driven by structural economic or financial problems that take years to resolve. The recovery is gradual, with periods of false hope and renewed decline. The post-2008 recovery followed this pattern: the market bottomed in March 2009, rallied, pulled back, and did not reach its 2007 high until March 2013.
The shape of the recovery matters enormously for investors. In a V-shaped recovery, the penalty for selling at the bottom is extreme because prices recover quickly. In an L-shaped recovery, the penalty for selling is still significant but less acute because there is more time to reinvest before prices reach their previous peak.
What the Data Means for Investors
The historical record on bear markets provides several practical insights for long-term investors.
Bear markets are a normal feature of equity markets. They have occurred roughly once every seven years since 1929. An investor with a 30-year time horizon should expect to experience four or five bear markets during their investment lifetime. Planning for zero bear markets is planning for failure.
Most bear markets are relatively brief. Excluding the extreme cases associated with the Great Depression and World War II, the median duration from peak to trough has been approximately 12 to 13 months, and the median recovery time has been approximately 2 to 3 years. For an investor with a long time horizon, these are temporary disruptions.
The most severe bear markets are associated with banking crises. If the banking system is sound, the odds favor a relatively quick recovery. If the banking system is impaired, the downturn is likely to be deeper and the recovery slower.
Missing the early recovery is extremely costly. A substantial portion of total returns during a market cycle comes from the initial months of the recovery, when prices rebound from deeply depressed levels. J.P. Morgan data shows that missing the 10 best days in the S&P 500 over a 20-year period reduces total returns by more than half. These best days tend to cluster around the worst days, during periods of extreme volatility. An investor who sells during the downturn and waits for "certainty" before re-entering is almost certain to miss the strongest part of the recovery.
Dollar-cost averaging reduces the impact of bear markets. An investor who makes regular contributions regardless of market conditions automatically buys more shares at lower prices during bear markets. This mechanical buying discipline means that bear markets actually improve the long-term returns of the consistent investor by allowing them to accumulate shares cheaply.
Every bear market has ended. This statement is true for the United States, where every bear market since 1929 has been followed by a recovery to new highs. It is not universally true for all markets (Japan's market took 34 years to recover its 1989 peak). But for diversified U.S. equity investors, the historical record supports the view that patience is rewarded and that selling during a bear market is more likely to lock in losses than to protect capital.
Bear markets are painful, inevitable, and temporary. Investors who understand their historical patterns, who build portfolios that can withstand them, and who resist the urge to sell at the worst possible moment are the ones who capture the long-term returns that equity markets have delivered throughout history.
Put these principles into practice. Track fundamentals, build portfolios, and analyze stocks with AI-powered insights.
Start Free on GridOasis →