This time, Wall Street's lower opening is not an isolated stock market event, but a typical tightening of the macro chain. Trump's strong statements against Iran interrupted the market's recently built optimism for a ceasefire. Oil surged again, the dollar strengthened, and global risk appetite declined, putting U.S. stocks in the position of "revaluing growth assets." Reuters summarized this change succinctly: investors are returning to the old path of March—selling stocks, buying dollars, and pushing up oil prices.
How War is Re-Influencing U.S. Stocks
In the past few days, U.S. stocks have tried to prove they can become "desensitized" to war news. On April 1st, as Trump hinted that the U.S. might "leave Iran soon," the S&P 500 and Nasdaq rose for the second consecutive day, and the market even began to trade as if "the worst moment is over." But the speech on April 2nd changed that. Reuters noted that Trump provided no clear timetable for an end nor a realistic plan for restoring passage through the Strait of Hormuz, only stating that strong action against Iran would continue in the coming weeks. Thus, the market realized that what it purchased in the previous two days was not actual improvement but rather hope. Once that hope evaporates, risk assets need to be repriced.
Cross-Asset Implications
On a cross-asset level, these changes are synchronized. Reuters shows that Brent oil prices surged back above $109, U.S. stock indices opened lower, the dollar strengthened, and there is growing concern about stagflation as the conflict drags on. This means that what the U.S. stock market faces is not just a simple decline in risk appetite, but a triple overlay of "oil prices driving inflation, inflation suppressing easing, and the absence of easing suppressing valuations." For the S&P 500, this environment is generally unfavorable for broad-based gains, as the index contains sectors that benefit from high oil prices as well as those harmed by rising interest rates and costs, such as technology, consumer, and transportation sectors. The result could be a fluctuating index with very pronounced sectoral divergence.
Employment, Fed, and Risk Appetite
It is harder for the U.S. stock market to regain stability now due to another reason: macroeconomic data is not bad enough to support a rapid interest rate cut. Last week, initial jobless claims in the U.S. fell to 202,000, still indicating low levels of layoffs. Meanwhile, Reuters mentioned on April 1st that traders are even beginning to think that the probability of a rate hike by the end of the year is higher than a cut. In other words, the rise in oil prices is not leading to the traditional protection of "the economy will worsen, so the Fed will rescue the market," but rather an awkward situation of "the economy has not yet stalled, making it harder for the Fed to pivot dovishly." This is a macro combination that growth stocks dislike the most, and it's the fundamental reason why the Nasdaq often faces more pressure than the Dow on Thursdays.
Long-Term Narrative
Looking further ahead, the real significance of this news is to remind the market: the U.S. stock market in 2026 is not just trading AI, IPOs, and individual stock stories, but is still heavily influenced by geopolitical and energy shocks. A super IPO like SpaceX can boost certain themes, and Globalstar may surge on merger rumors, but these cannot replace macro anchors. As long as the Strait of Hormuz, the Iran conflict, and the oil price cap remain unaddressed, the U.S. stock market will remain in a phase of "localized frenzy and overall caution." For investors, what matters most currently is not whether a certain hotspot will rise but when macro risks will truly recede from the main narrative.
