Oil shock and Iran tensions flip the script: energy up, AI chips hit, Nasdaq lags

Today in one line

Oil and war headlines shoved markets into a risk-off mood: energy and “safe” stocks climbed, while AI and chip names got hit hard, pulling the Nasdaq down more than the rest of the market.

What it felt like

If you own a bunch of tech or AI, today probably felt rough. The S&P 500 slipped about three‑quarters of a percent, but the Nasdaq dropped more than double that. It wasn’t a full‑on panic — volatility is up but still moderate — yet the message was clear: investors were suddenly less comfortable with the hot, speculative parts of the market.

The main driver: oil and Iran

The big story is the U.S.–Iran flare‑up around the Strait of Hormuz:

• Iran has talked about closing the strait; the U.S. is reinstating a naval blockade and demanding a 20% fee on cargo.
• Ship traffic through the strait has fallen sharply.

That’s a key artery for global oil. Unsurprisingly, oil prices jumped, and energy stocks ripped higher — the energy sector was up about 3%, easily the best performer. Utilities and big financials also held up well.

At the same time, chip and AI‑linked stocks were the punching bag. Memory names and high‑beta tech — think Micron, Nvidia, Intel and peers — fell hard, and technology ended the day down more than 2%. Growth and “high‑beta” styles sank, while value and low‑volatility funds were up. Money clearly moved out of the racier stuff into steadier names.

The second driver: inflation and the Fed

Layered on top of the geopolitics is inflation anxiety:

• Inflation recently hit a three‑year high and is only starting to ease.
• Tomorrow’s CPI report is a big one, and Fed officials have openly said a hot reading could trigger new rate hikes.
• Short‑term Treasury yields have been edging up, and the VIX (the market’s fear gauge) jumped about 14% to just over 17.

So investors are asking: if oil stays high because of the conflict, does that keep inflation sticky and force the Fed to tighten again?