The stock market has exhibited remarkable gains during President Donald Trump’s first term, with the Dow Jones Industrial Average climbing 57%, the S&P 500 increasing by 70%, and the tech-heavy Nasdaq Composite skyrocketing 142%. These robust figures underscore a bullish environment, even as the volatility typical of market cycles persists. Recent weeks, however, brought a shift in sentiment as rising geopolitical tensions following the initiation of military operations against Iran led to anxiety among investors.
Since February 28, when U.S. and Israeli forces engaged in military action, the impact on the economy has been palpable, particularly through rising gas prices. This conflict has significantly affected the Strait of Hormuz, a crucial nexus for global oil trade where 20 million barrels—about 20% of the world’s daily oil requirements—transit each day. With Iran’s announcement to close this strategic route, the implications for worldwide oil supply have resulted in dramatic increases in crude oil prices.
As reported by AAA, the average price for a gallon of regular gas surged by 34% to roughly $3.93 since the escalation of tensions, while diesel costs shot up by 41%, reaching about $5.21 per gallon. Although such price spikes represent significant financial pressure, especially on low-income households—as an analysis by the Federal Reserve Bank of Dallas highlights—they may not be sufficient alone to derail the broader U.S. economy or stock market.
The greater concern for investors lies in the potential responses from the Federal Reserve. The central bank, which meets approximately six times a year, has the mandate to manage employment and stabilize prices through adjustments in monetary policy. Recent months have seen a series of rate cuts aimed at stimulating growth, with the current federal funds rate set between 3.50% and 3.75%. However, if inflation rates persistently increase—driven by higher energy costs—and force the Fed to reconsider its policy trajectory, the stock market could face severe repercussions.
Initial forecasts from the Federal Reserve Bank of Cleveland project a spike in the trailing 12-month inflation rate from 2.4% in February to around 3% in March, driven by the escalation in energy prices. This could compel the Fed to abandon further rate cuts or even consider raising rates, a move that would have profound effects on the stock market already grappling with lofty valuations amid investor expectations for continued low rates.
Currently, the stock market is at its second-highest valuation in 155 years according to the S&P 500’s Shiller Price-to-Earnings Ratio, built on assumptions of imminent rate cuts. Any shift in this policy could portend a turbulent period for the Dow Jones, S&P 500, and Nasdaq Composite, exacerbated by the internal divisions within the Federal Open Market Committee (FOMC). Recent meetings have shown dissent among members, with conflicting opinions on policy adjustments, raising questions about the Fed’s consistency and credibility moving forward.
In summary, while gas price increases are grabbing headlines, a potential stock market crash under President Trump may hinge more critically on the Federal Reserve’s monetary policy decisions in response to ongoing geopolitical uncertainty. Investors are advised to remain vigilant about these developments, as the broader implications for the economy unfold.


