How Long Bear Markets Last

A bear market is officially defined as a 20% or more decline from a recent high. They are scary while they're happening, but they are a normal and recurring part of investing. Since 1929, the U.S. stock market has experienced roughly 26 bear markets — about one every three to four years on average. Understanding their typical duration and depth can help you stay rational when the next one arrives.

The Numbers

Here's what the data shows across all S&P 500 bear markets since 1929:

Average decline: About 36%. The median is slightly less — around 33%. Half of all bear markets have been relatively shallow (20-30% declines), while a few have been devastating (50%+ in 1929-1932, 2000-2002, and 2007-2009).

Average duration (peak to trough): About 9.6 months. The shortest was the COVID crash — just 33 days. The longest was the Great Depression — roughly 34 months. Most bear markets last between 6 and 18 months.

Average recovery time (trough back to previous high): About 2.2 years. But this is skewed by a few very long recoveries. The median recovery time is about 1.5 years. The COVID crash recovered in just 5 months. The 2007-2009 crash took about 4 years.

A Historical Perspective

The Great Depression is a massive outlier. If you exclude it, the average recovery time drops to about 2 years. Most bear markets are painful but temporary disruptions, not generational catastrophes.

Bear Markets vs Recessions

Not every bear market is accompanied by a recession, and not every recession causes a bear market — though the two often overlap. The 1987 crash happened with no recession at all. The COVID crash was accompanied by the shortest recession in history (two months). The 2022 bear market occurred without a formal recession.

Bear markets caused by recessions tend to be deeper and longer than those caused by non-recessionary factors (like rising interest rates or geopolitical events). The average recessionary bear market declines about 40% and lasts about 14 months. Non-recessionary bear markets average about 24% and last about 7 months.

Why This Matters

When you're in the middle of a bear market, it feels like it will never end. Your portfolio is red. Headlines are terrifying. Pundits are predicting doom. Every day feels like it could get worse.

But history provides crucial perspective. The average bear market lasts less than a year. The average recovery takes about two years. If you have a 10, 20, or 30-year time horizon, even the worst bear market is a relatively short detour.

The real danger isn't the bear market itself — it's your reaction to it. Selling at the bottom locks in losses that would otherwise be temporary. Studies show that the average investor earns significantly less than the market because they sell during downturns and buy during euphoria. They do the exact opposite of what works.

How to Survive a Bear Market

Keep perspective. Remind yourself that every single bear market in history has ended. The market has always recovered. Always. This one will too.

Don't check your portfolio daily. Frequent checking increases anxiety and the temptation to sell. During a bear market, check monthly at most.

Keep investing. If you're still working and adding money to your portfolio, a bear market is a gift — you're buying stocks at lower prices. Dollar-cost averaging during a downturn dramatically improves your long-term returns.

Have a plan before the crash. Decide in advance how you'll respond to a 20%, 30%, or 40% decline. Write it down. When the panic hits, follow the plan instead of your emotions.