Why is the US stock market down today?

The US stock market fell on April 7 as Trump’s warning that “an entire civilization will die tonight” ahead of the Strait of Hormuz deadline in Iran injected fresh fears into stocks.

WTI crude rose to $115.19, up 13% in a single week, as reports of Israeli attacks on petrochemical infrastructure on Iran’s Kharg Island wiped out any remaining de-escalation hopes that had given stocks a brief boost in recent sessions.

Three forces drove sales on April 7, all related to the same root cause. Oil above $115 is fueling inflation expectations, keeping the Federal Reserve on lockdown and crushing consumer and growth stocks simultaneously.

Markets had been pricing in a partial de-escalation after Iran’s earlier diplomatic exchanges through mediators. Trump’s statement, made ahead of Tuesday’s self-imposed deadline for Iran to reopen the Strait of Hormuz, ended that narrative and reignited fears of direct attacks on Iranian energy infrastructure.

The closure of Hormuz has already disrupted about a fifth of the world’s oil and LNG supplies. Trump’s demand for an immediate reopening, along with reports of attacks on Kharg Island, indicate that the conflict is entering a more dangerous phase rather than ending.

Risk assets sold off as the “war will end soon” trade unfolded.

WTI crude oil at $115.19 is 13% higher in a single week. Oil at these levels works as a direct tax on consumers and businesses, raising input costs across sectors and fueling the inflation data the Federal Reserve is watching.

The March CPI report due out on Friday is expected to show the sharpest monthly rise since 2022, making rate relief even less likely.

Apple (AAPL) fell 3.35% after Nikkei Asia reported engineering setbacks on the foldable iPhone that could delay production timelines. Apple has the largest weighting in the S&P 500, so a drop of almost 4% mechanically drags down the index regardless of broader conditions.

At press time, all four major indices are in the red.

• The S&P 500 fell 28.89 points (-0.44%) to 6,582.94. The index fell more than 1% early in the session before recovering.

• The Dow Jones Industrial Average fell 244.33 points (-0.52%) to 46,425.60.

• The Nasdaq Composite fell 141.40 points (-0.64%) to 21,854.90.

The Russell 2000 fell 0.85 points (-0.34%) to 251.51, confirming that weakness in small caps reflects the broader decline in the index.

Market breadth is negative, with 3,365 stocks falling (60.4%) versus 1,990 rising (35.7%).

The S&P 500 is trading at 6,580 on the daily chart, dealing with two converging exponential moving averages (EMAs), trend indicators that give greater weight to recent price action.

The 20-day EMA is at 6,601 and the 200-day EMA is at 6,587. When the shortest and longest EMAs compress so strongly, it reflects a market that has lost directional conviction and is waiting for a catalyst to force resolution.

The intraday low of 6,534 found support near 6,518 at the technical level of 0.382. A daily close below 6,518 opens the way towards 6,441 and the previous low at 6,316.

On the positive side, the US stock markett Needs a daily close above 6,643 to show the strength of the recovery, with 6,845 the next target above that.

Energy led with a +0.54% gain as WTI held above $115. The sector remains the only group with a structural tailwind from the conflict with Iran, as high oil prices directly increase producers’ income.

Utilities rose +0.35% as defensive positioning continued. Risk aversion is overriding the sector’s traditional rate sensitivity, making yield-paying defenses attractive as a parking spot for nervous capital.

Communication services gained +0.30%, supported by Google (GOOG), which rose 1.21%.

Consumer Cyclicals led the losses with −1.48%. Higher oil prices compress discretionary purchasing power by increasing fuel and transportation costs. Tesla (TSLA) fell 2.94%, Home Depot (HD) fell 2.60%, and Walmart (WMT) lost 2.66%.

Consumer Defensive also fell 1.30%, an unusual drop for a traditionally safe sector that indicates selling pressure is broad enough to affect even conservative positions. Coca-Cola (KO) lost 1.34% and Procter & Gamble (PG) lost 0.67%.

Basic materials fell 0.63% even though gold remained above $4,400. The decline reflects that commodity stocks are not completely insulated from broader selling pressure.

Broadcom (AVGO) rose 4.92% after Anthropic signed a deal with Google and Broadcom for several gigawatts of next-generation TPU capacity starting in 2027.

The agreement indicates that demand for AI infrastructure remains strong enough to overcome macroeconomic obstacles for companies directly linked to capacity development.

UnitedHealth Group (UNH) rose 10.08% on unexpected Medicare Advantage news, making it the day’s biggest gainer in the S&P 500 and providing a floor for the healthcare sector that otherwise would have fallen further.

Trump’s self-imposed Tuesday deadline for Iran to reopen the Strait of Hormuz arrives in a few hours. If Iran shows signs of compliance or a negotiated path, oil could pull back sharply, boosting stocks at Wednesday’s open.

If the deadline passes without resolution and attacks on Iran’s energy infrastructure begin, WTI could rise. That scenario would further compress the oil-inflation-rates chain. It would push the 10-year yield to new highs and put the S&P 500’s 6,316 low firmly in play.

March CPI data arrives on Friday. A positive number would reinforce the “higher for longer” narrative, while a softer number could provide relief to growth stocks.

The combination of the Iran deadline and the CPI makes this week one of the busiest for the US stock market.

Read original story Why is the US stock market down today? by Ananda Banerjee at beincrypto.com