What is a Bear Market?
A bear market is a sustained decline in stock prices of 20% or more from recent highs, typically accompanied by economic weakness, falling corporate earnings, and declining investor confidence.
A bear market is a period of sustained decline in asset prices — typically defined as a drop of 20% or more from a recent peak in a major stock index like the S&P 500 or Nasdaq Composite. Bear markets are often accompanied by widespread pessimism, falling corporate profits, rising unemployment, and slowing economic growth.
Bear markets are the opposite of a bull market. They can affect stocks, bonds, real estate, or any asset class, and they can last anywhere from a few months to several years.
What Causes a Bear Market?
Bear markets are usually triggered by some combination of:
- Economic recession — A contracting economy leads to lower earnings, layoffs, and reduced consumer spending
- Rising interest rates — Higher rates increase borrowing costs, squeeze corporate margins, and make safer assets like bonds more attractive relative to stocks
- Geopolitical shocks — Wars, pandemics, or political crises can trigger rapid and widespread selling
- Market bubbles bursting — When asset prices have risen far beyond underlying value, a sharp correction can become a prolonged decline
- Credit crises — When lending markets seize up (as in 2008), confidence can collapse quickly
How Long Do Bear Markets Last?
Bear markets tend to be shorter than bull markets but feel more intense because of the speed and severity of losses. Since 1928, the average bear market has lasted about 9.6 months, with average declines around 36%.
| Bear Market | Duration | Peak-to-Trough Decline |
|---|---|---|
| COVID-19 (2020) | ~1 month | ~34% |
| Financial Crisis (2007–2009) | ~17 months | ~57% |
| Dot-com Bust (2000–2002) | ~30 months | ~49% |
| Oil Crisis (1973–1974) | ~21 months | ~48% |
Bear Market vs. Correction
A market correction is a decline of 10–19.9% from a recent high. Corrections are considered a normal and healthy feature of long-term market cycles — they occur regularly and usually resolve without becoming full bear markets. A bear market, at 20%+, typically signals deeper economic or structural trouble.
Investing During a Bear Market
Bear markets are painful, but they also create opportunities for disciplined long-term investors:
- Stay the course — Selling during a downturn locks in losses permanently; investors who held through past bear markets recovered fully and then went on to new highs
- Continue dollar-cost averaging — Buying at lower prices means accumulating more shares for the same dollar amount, lowering your average cost basis
- Reassess asset allocation — If a bear market is causing you to lose sleep, your portfolio may be taking on more risk than suits your situation
- Look for value — Bear markets often bring growth stocks and blue-chip stocks to prices that long-term buyers find attractive
- Consider tax-loss harvesting — Selling positions at a loss can offset capital gains tax obligations elsewhere in your portfolio
The most costly mistake an investor can make in a bear market is panic-selling and then missing the early days of the recovery. Historically, some of the largest single-day gains in market history have occurred during bear markets or within the first weeks of a new bull run.