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GROK TRADE BLOG

What Is the Difference Between a Market Crash and a Market Correction?

4/6/2025

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Let’s get real about stock market drops—what they are, how often they happen, and why not every dip is the end of the world.

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Quick Breakdown
  • Corrections = A drop of 10% or more from a recent peak.
  • Bear Markets = A drop of 20% or more, often longer and scarier.
  • Market Crashes = Sudden, sharp drops (usually 20%+ in a very short time). Think panic mode.
  • Crashes are usually fast. Corrections are common. Bear markets are painful but expected.

We’ve crunched over 100 years of S&P 500 data to settle the confusion. Investors throw around terms like “crash,” “correction,” and “bear market” like they’re interchangeable—but they’re not. So here’s the stripped-down, data-backed difference.


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Corrections: The Market’s Version of a Power Nap
Corrections are defined as a 10% or greater drop from a recent high. They sound scary, but they’re actually routine. Since 1929, the market has experienced about 56 corrections, which averages out to roughly one every 1.7 years. If the stock market were a person, corrections would be its seasonal cold—annoying, but part of life.
Most corrections don’t last long, and fewer than half of them turn into full-blown bear markets. So if you see headlines shouting about a 10% slide, don’t panic. It’s not a crash. It’s just the market stretching its legs.

Bear Markets: The Real Test of Patience
When the market drops 20% or more, it officially enters bear market territory. Now things are getting serious. These periods usually come with economic concerns—recessions, inflation, financial crises—and last longer.

Depending on how you count, the S&P 500 has seen 22 to 26 bear markets over the last century. That works out to about one every 3.8 to 4.4 years. Some sources include overlapping downturns during the Great Depression; others count them as one massive event. Either way, they’re not rare, but they’re also not the default setting.

Bear markets can lead to big losses. In 2007–2009, the market dropped around 57%. That was brutal—but still not the worst.

Market Crashes: When Panic Hits the Pedal
A market crash isn’t defined by a specific percentage, but more by speed and severity. Crashes are typically fast and sharp, often dropping 20% or more in just days or weeks. The 1929 crash? The 1987 crash? The COVID panic in 2020? All crashes.

Crashes are usually the front-end of bear markets—but not always. In March 2020, the S&P 500 plunged nearly 34% in just over a month, but the market rebounded quickly. Crashes cause chaos, but they don’t always equal long-term doom.

Just How Bad Can It Get?
Let’s take it further:
  • 30%+ declines: About 13 times since 1929.
  • 40%+ declines: Around 7 times.
  • 50%+ declines: Just three—1937–1938, 2007–2009, and the Great Depression.
  • 60–70%+ declines: Happened once—the Great Depression, when the market fell ~83%. No modern market has come close.

Since World War II, we haven’t seen a 60%+ drop. Not even in 2008. That’s important to remember when fear hits.

Bottom Line
A correction is a normal part of market cycles. A bear market is a deeper decline that tests long-term investors. A market crash is the panic-driven, fast-moving cousin that makes headlines—and heart rates spike.
But here’s the punchline: Every single one of them has been followed by a recovery. Every. Single. Time.

Sources:
  • Reuters: https://www.reuters.com/markets/us
  • Yardeni Research: https://www.yardeni.com
  • Hartford Funds: https://www.hartfordfunds.com
  • Investopedia: https://www.investopedia.com
  • Potomac Advisors: https://www.potomacadvisors.com

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    Des Woodruff (aka d-seven)


    Des is a visionary who spots future market trends and started several ventures considered first-to-market.

    As a serial entrepreneur with a propensity for strategic innovation, Des owns an array of businesses across diverse sectors.
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    In the financial industry, Des is the President and Founder of FreeTradingVideos.com, Inc., operating under the names GrokTrade and FreeOnlineTradingEducation.com and a fund manager at his quant fund which uses trading algos.

    Des publishes regular articles on various topics on investing, the emergence of AI in trading, and digital currency

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