What Is a Bear Market?
A bear market is a prolonged decline in the price of a market or a broad index — conventionally defined as a drop of 20% or more from a recent peak. The term is usually applied to a major index such as the S&P 500, and it reflects sustained pessimism among investors rather than a single bad day. The name is often explained by the way a bear swipes its paws downward, in contrast to a bull thrusting its horns up.
What Defines a Bear Market
The widely used threshold is a 20% decline from the most recent high. If a major index peaked at 5,000 and falls to 4,000, that 20% drop marks the start of a bear market. Two features matter: the size of the decline (at least 20%) and its persistence — bear markets unfold over weeks or months, not in a single session. A brief plunge that quickly reverses is treated differently from a sustained downtrend.
Bear Market vs. Correction vs. Pullback
The size of the decline is what separates the terms. A pullback is a minor dip of less than 10%. A correction is a decline between 10% and 20% from the peak. A bear market is a fall of 20% or more. These are conventions rather than precise scientific lines, but they give investors a shared vocabulary for how serious a downturn has become.
What Causes Bear Markets
Bear markets are usually driven by deteriorating fundamentals combined with fear. Common triggers include economic recession or the expectation of one, rising interest rates that make borrowing costlier and bonds more competitive with stocks, high inflation, the bursting of an asset bubble, and external shocks such as a financial crisis or a pandemic. As prices fall, pessimism can feed on itself, accelerating the decline.
How Long Do Bear Markets Last
Historically, bear markets have tended to be shorter than the bull markets that follow them, often lasting from several months to roughly a year, though some have run considerably longer. Importantly, in the major broad markets each bear market has so far eventually given way to a recovery that reached new highs. That history is encouraging but not a guarantee — past performance does not promise future results.
How Investors Respond to a Bear Market
This is general education, not personalized advice. Long-term investors often focus on their time horizon rather than the daily headlines, since selling in a panic can lock in losses and miss the eventual recovery. Common approaches include continuing to invest steadily (so you buy at lower prices too), keeping a diversified mix so no single holding dominates, and revisiting your asset allocation to confirm it still matches your risk tolerance. What is right for you depends on your goals and timeline, and a financial professional can help.
A bear market is one part of the market cycle — see how diversification and a sensible mix of bonds and dividend-paying stocks can cushion the ride, and project a long-term plan with our retirement calculator and compound interest calculator.
Frequently Asked Questions
By convention, a decline of 20% or more from a recent peak in a major index marks a bear market. A drop of 10% to 20% is called a correction, and a smaller dip under 10% is usually called a pullback.
Historically they have tended to be shorter than bull markets — often several months to about a year, though some have lasted longer. In the broad markets, each one has so far been followed by a recovery to new highs, but past performance is not a guarantee of future results.
This is general information rather than advice. Many long-term investors avoid panic-selling (which locks in losses), keep contributing on a regular schedule, and stay diversified so no single position dominates. The right move depends on your time horizon and risk tolerance, so consider speaking with a financial professional.