By Anouchka Ettedgui, Staff Writer
We’re taught to see war as a loss. And it is. It causes destruction, displacement and broken families. These are real people, real lives. So why is it that when something goes wrong somewhere in the world, the stock market doesn’t always experience a downturn too? Why is it that sometimes stocks counterintuitively rise in these moments? If the world is uncertain, shouldn’t markets reflect that? Shouldn’t everything slow down?
Not necessarily. Just take a look at history. During major conflicts, certain sectors, such as defense, energy and manufacturing, don’t just survive, they expand. Governments spend more, production increases, contracts multiply and suddenly, the market reflects this growth.
During World War II, for example, the American economy grew instead of shrinking, and it was completely reshaped. Car companies like Ford stopped focusing on consumer vehicles and started producing military equipment, including bombers and tanks. Unemployment dropped, factories ran almost nonstop and production hit levels the country had never seen before. The war created demand, and industries expanded to meet it.
The same pattern emerged during the Cold War. Even without constant direct fighting, the pressure to stay prepared led to decades of heavy government spending. Defense contractors grew into massive companies, and entire industries, especially aerospace and technology, developed around military needs. What started as defense spending ended up driving innovation and long-term economic growth in certain sectors.
During war, the S&P 500 doesn’t only act on emotion; rather, it responds to movement. It tracks where money is going, when industries are expanding and when demand is increasing. It doesn’t pause to ask why something is happening. It just reflects that it is.
And during wartime, a lot is happening.
But not all economic consequences of war look the same. In some cases, conflict leads to increased production, government spending and job creation that helps expand certain industries. In other situations, war creates economic movement in a very different way. Instead of growth coming from manufacturing or employment, markets react to fear, instability and anticipated shortages. Even so, the overall pattern remains the same: money shifts toward the industries most directly affected, and the market reflects that movement in real time.
This is playing out now amid the conflicts in the Middle East. While tensions between the U.S., Israel and Iran escalated, the first reaction wasn’t just fear; it was movement in the energy market. Oil prices didn’t stay stable but surged because investors anticipated supply disruptions through the Strait of Hormuz, which carries a large portion of the world’s oil. In some cases, prices jumped more than 50% as the conflict intensified, and gas prices rose across the U.S. as a result. At the same time, some energy companies and oil-related sectors saw stronger performance even while other parts of the market became more volatile. This kind of market reaction can hurt consumers and slow down other parts of the economy, but it demonstrates the same broader reality: uncertainty does not stop economic activity; it redirects it. The market reflects where money, demand and investment are moving in response to conflict.
That doesn’t mean war is “good” for the economy. It means the economy adjusts, money moves, industries change and priorities shift. The market reflects that movement in real time. Sometimes, emotion and economic activity don’t line up the way we expect them to. Specific areas can see growth despite global uncertainty. Instability can coexist with increased production. Tension can mean investment pouring into industries that are directly affected by it. Both realities can exist at once, and that’s where it gets interesting.
It makes you think about what we actually mean when we say “the market is doing well.” What is actually doing well? And why? Those questions matter, and they don’t take away from the strength of the American economy; they demonstrate it. The ability to adjust and keep moving under pressure is something not every system has.
Even when things feel uncertain, the economy doesn’t just stop. It shifts. It adapts. It keeps going. That’s not something to ignore. And once you understand that, the market looks different. It’s not just numbers; it’s a reflection of real decisions happening on a huge scale.
So maybe the takeaway isn’t that it’s surprising the markets can thrive in wartime. Maybe it’s that this only demonstrates that the market is doing exactly what it’s built to do. The real question is whether we actually understand what we’re looking at when it does.
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