What History Tells Us About Bull and Bear Markets During Times of War
With recent geopolitical tensions and military actions involving the United States and Iran, many investors are feeling uneasy. News headlines about conflict, oil price spikes, and fears of wider war can make financial markets seem unpredictable and dangerous.
For retirees or those approaching retirement, these events can feel especially concerning. If you’re relying on your investments for income, the idea of market turmoil during global conflict can be unsettling.
However, when we step back and look at history, the relationship between war and financial markets is often very different from what people expect. By examining stock market data over the last 75 years, we can gain valuable perspective about how markets actually behave during times of geopolitical tension.
This historical perspective can help investors make more rational decisions about their financial plans, even when the news cycle feels alarming.
Markets and Geopolitics: A Complicated Relationship
One of the most common assumptions investors make is that world events directly drive market movements. When bad news happens—especially wars or geopolitical crises—many people assume stocks must fall.
But markets are far more complex than that.
Financial markets operate like a multi-variable equation. Geopolitical events are certainly one factor, but they are just one of many variables that influence prices. Economic growth, interest rates, corporate earnings, consumer demand, innovation, and investor sentiment all play significant roles.
Because of this complexity, market outcomes often behave counterintuitively. Investors frequently expect one outcome based on the news, only to see markets move in the opposite direction.
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Looking at 75 Years of Market History
If we examine bull and bear markets in the U.S. stock market—specifically the S&P 500—going back to 1950, several important patterns emerge.
First, bear markets do occur periodically. Market downturns are a normal part of investing.
But when viewed across decades, something striking becomes clear:
Bear markets are relatively small compared to the size and duration of bull markets.
While downturns can feel dramatic while they’re happening, long-term market growth has historically dwarfed those temporary declines.
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This is an important reminder:
Short-term volatility is normal, but long-term market growth has historically been persistent.
Do Wars Cause Bear Markets?
Many investors assume wars trigger major market declines. History tells a more nuanced story.
When we compare major geopolitical conflicts to stock market trends, we see that sometimes wars coincide with bear markets—but often they do not.
For example:
Korean War (early 1950s)
A bear market did occur during this period, suggesting some correlation.
Vietnam War (late 1950s–early 1970s)
Markets experienced both bull and bear cycles during the conflict, with no clear one-to-one relationship between the war and market direction.
Dot-com crash and 9/11 (2000–2003)
The market downturn began before the September 11 attacks but was likely worsened by the economic shock that followed.
Iraq War (2003)
Interestingly, the invasion of Iraq coincided with the start of a major bull market, not a decline.
This illustrates an uncomfortable but historically accurate reality:
War does not automatically cause markets to fall—and sometimes economic activity related to war can even stimulate certain industries.
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What If You Invest at the Worst Possible Time?
Another common fear investors have is entering the market right before a crash.
But historical data provides some surprising insight.
Imagine the worst-case scenario:
You invest 100% of your money into the stock market right at a market peak.
What would your returns look like if you simply held your investment over time?
The historical results are remarkably strong.
For example:
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Investing at the 2007 peak before the financial crisis still produced about 8.5% annual returns if held long-term.
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Even the worst timing in modern history—investing at the 2000 tech bubble peak—still produced over 6% annual returns over the following decades.
Across multiple historical market peaks, the average long-term return still landed around 7–9% annually.
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This reinforces a core principle of investing:
Time in the market matters far more than timing the market.
Why Most Investors Actually Do Even Better
The worst-case examples above assume a very unrealistic scenario—investing all your money on a single day.
In reality, most investors contribute gradually through:
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401(k) contributions
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Retirement accounts
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Monthly investing plans
This strategy is known as dollar-cost averaging.
By investing regularly over time, investors buy during:
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market highs
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market lows
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everything in between
This process smooths out volatility and often leads to even better long-term outcomes than the “worst case” examples.
Additionally, most portfolios are diversified across:
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U.S. stocks
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international stocks
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bonds
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real estate
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other assets
Diversification can further reduce risk and improve stability.
How Long Do Bear Markets Typically Last?
Understanding the duration of downturns is especially important for retirees.
Looking at market history since the 1950s, the average bear market has lasted about 413 days, or roughly one year and four months.
The longest downturn in recent history occurred during the early 2000s tech crash, lasting about 929 days, or roughly three years.
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This information can be extremely valuable when designing a retirement strategy.
A Smart Retirement Strategy: Planning for Market Downturns
One approach used by many financial planners is allocating investments based on future cash flow needs.
This strategy involves separating retirement assets into different “buckets.”
Bucket 1: Short-Term Cash Needs
Set aside 3–5 years of planned withdrawals in stable investments such as:
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short-term government treasuries
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high-quality bonds
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high-yield savings accounts
This money covers living expenses during market downturns.
Bucket 2: Growth Investments
The remainder of the portfolio stays invested in long-term growth assets such as stocks.
If markets decline, retirees can draw from the cash bucket instead of selling stocks at depressed prices.
Once markets recover, the growth portfolio can replenish the cash reserve.
This approach helps avoid one of the biggest risks in retirement:
Selling investments when markets are down.
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Bull Markets Last Much Longer Than Bear Markets
Another key takeaway from market history is the difference in duration between bull and bear markets.
While bear markets average a little over a year, bull markets historically last much longer.
On average, bull markets have lasted roughly five years.
This means markets spend far more time rising than falling.
For long-term investors, this asymmetry is incredibly important.
The Key Lesson for Investors
Geopolitical events will always create uncertainty. Wars, political crises, and economic shocks are part of history—and they will continue to happen.
But market history tells us several important truths:
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Bear markets are temporary.
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Bull markets last much longer.
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Even terrible market timing often produces strong long-term returns.
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A well-structured retirement strategy can help you ride out downturns.
Rather than reacting emotionally to headlines, investors benefit most from maintaining a disciplined, long-term approach.
History consistently shows that patience, diversification, and thoughtful planning are far more powerful than trying to predict the next crisis.
