People have a charming habit of pretending war is merely a geopolitical headline, as if markets politely wait for morality to resolve itself.
They do not.
War has always been, first and foremost, an economic shock engine—one that reprices risk, commodities, sovereign credibility, and future cash flows with ruthless efficiency. Those who still speak of “unexpected volatility” every time missiles fly are either historically illiterate or financially unserious.
So let us do what most commentary conveniently avoids: look at the numbers.
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War and Markets: Five Historical Cases the Market Never Forgot
1) World War I (1914–1918)
Before the outbreak, the Dow Jones Industrial Average traded around 81 points in July 1914.
Once war broke out in Europe, panic selling became so severe that the New York Stock Exchange was closed for nearly four months—an extraordinary event that alone tells you everything about investor fear.
When trading resumed in December 1914, the Dow initially dropped roughly 24% from pre-war levels, before war production spending drove industrial expansion.
By late war years, U.S. steel, rail, and manufacturing futures-linked contracts surged sharply due to defense procurement.
The lesson?
Initial collapse, followed by state-driven industrial reflation.
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2) World War II (1939–1945)
In September 1939, before Germany invaded Poland, the Dow hovered near 150.
After the invasion, the index initially sold off around 10–12%, but here is where amateurs usually misunderstand history:
Once the market began pricing in U.S. industrial mobilization, defense manufacturing orders exploded.
By 1945, the Dow had recovered to roughly 190–200, while industrial commodity futures—especially steel, copper, and oil-linked contracts—experienced persistent upward repricing.
War destroys lives, yes.
But markets price government spending multipliers with almost indecent enthusiasm.
Cynical? Certainly.
Incorrect? Not remotely.
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3) Gulf War (1990–1991)
Before Iraq invaded Kuwait in August 1990, the S&P 500 stood near 360.
During the initial shock and oil panic, it fell to around 295, a decline of nearly 18%.
Crude oil futures, meanwhile, jumped from roughly $17 per barrel to above $40, more than doubling at peak fear.
Once the U.S.-led coalition intervention began and swift military superiority became evident, equities rebounded violently.
By February 1991, the S&P had already recovered above 340.
Classic war market behavior:
– immediate risk-off selloff
– commodity spike
– relief rally once outcome clarity improves
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4) Iraq War (2003)
Prior to the March 2003 invasion, the S&P 500 traded near 800.
Markets had already priced months of uncertainty.
Interestingly, once the war officially started, the index rose nearly 7–8% within weeks, reaching around 860–870.
Why?
Because markets despise uncertainty more than conflict itself.
Oil futures rose from roughly $26–28 to above $37, then normalized as supply concerns eased.
This is the part retail investors routinely fail to grasp:
the event is often less important than the removal of ambiguity.
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5) Russia–Ukraine War (2022–present)
Now to the most analytically relevant modern case.
Before the February 24, 2022 invasion:
– S&P 500: ~4,380
– KOSPI: ~2,720
– Brent crude futures: ~$96
Within days:
– S&P fell to ~4,110 (-6.2%)
– KOSPI dropped near 2,610 (-4.0%)
– oil futures surged above $128
– wheat futures spiked over 40%
– European gas futures exploded
Academic studies consistently confirm significant negative equity spillovers and elevated volatility across global indices.
Commodity and futures spillovers became the dominant transmission channel.
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Now, About Today’s U.S. Statement on Iran
The latest U.S.-Iran statement is not a declaration of escalation, but rather a 45-day ceasefire push through regional mediators.
This matters enormously.
Markets do not trade morality.
They trade probabilities of oil supply disruption.
The single most important variable is the Strait of Hormuz risk premium.
Recent conflict headlines already pushed oil materially higher.
A ceasefire signal implies:
– lower crude volatility
– lower defense risk premium
– rotation back into growth and semiconductors
Which means the likely market response is actually more constructive than many doom-posters seem eager to admit.
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My Forecast: U.S. Stocks
1) NVIDIA
Expected: +4% to +8% over 2–4 weeks
Risk sentiment normalization strongly favors AI and semiconductor beta.
This is precisely the kind of stock that gets punished during macro panic and rebounds first when geopolitical premium compresses.
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2) Exxon Mobil
Expected: -3% to -6%
Yes, energy likely softens.
If ceasefire momentum strengthens, crude’s war premium fades, taking integrated oil names down with it.
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3) Lockheed Martin
Expected: +2% to +5% short-term, then flat
Defense stocks may remain supported because conflict de-escalation does not immediately reverse procurement expectations.
War budgets have a habit of outliving wars.
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My Forecast: KOSPI
1) Samsung Electronics
Expected: +3% to +6%
Semiconductor risk-on recovery plus improved global tech sentiment.
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2) SK Hynix
Expected: +5% to +9%
Higher beta than Samsung, therefore sharper upside if U.S. tech rallies.
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3) Korea Electric Power Corporation
Expected: +2% to +4%
If oil and LNG futures ease, cost pressure expectations improve.
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Final Thought
The pattern is painfully consistent across history.
War causes:
1. immediate uncertainty selloff
2. commodity and futures spike
3. relief rally on outcome clarity
The current U.S.-Iran statement leans toward phase 3.
So unless negotiations collapse, both U.S. equities and KOSPI are more likely to rebound than cascade lower.
History, unlike social media panic, tends to be rather less emotional.
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