The headline numbers looked ugly, but the damage was concentrated in a narrow slice of the market.
The tape split in two
The S&P 500 closed down 0.79% at 7,515.34. The Nasdaq lost 1.55% to 25,873.18, and the Dow slipped 138 points, or 0.26%, to 52,498.64.
Those declines tell you almost nothing about the average stock. The equal-weight version of the S&P 500, which treats every company the same instead of letting the giants dominate, fell just 0.03%. That divergence is the real story of the session. Monday was not a broad selloff. It was a handful of expensive mega-caps dragging the index while the typical company barely moved.
Chips took the hit
Semiconductors were the weak spot, sliding almost 4.8% as a group. Investors questioned the artificial intelligence trade for the second time in two weeks.
SK Hynix, the memory maker that debuted on the Nasdaq Friday, dropped 8% in its second US session, and its Seoul-listed shares posted their worst day on record. Micron fell 4%, Sandisk lost 12%, and Seagate gave back 5%. The pain reached the processor names too, with Advanced Micro Devices off 4% and Intel down 6%.
The trigger came from the oil market. President Trump moved to reinstate a blockade on Iranian shipping through the Strait of Hormuz, and Brent crude jumped more than 9%, its biggest one-day spike since 2020. Higher energy costs pressure every richly valued growth stock at once, and chips were the crowded trade holding the most air.
Where the money went
The selling did not leave the market. It changed seats. Financial stocks rose about 0.65% while the tech sector fell 2.4%, a clean picture of capital rotating from one end of the market to the other. Energy names climbed with crude and cushioned the Dow.
The timing is what makes the move interesting. The rotation into banks landed the day before the biggest banks report. Goldman Sachs, Morgan Stanley, and Citigroup have each gained more than 20% this year on strong trading and dealmaking, while Wells Fargo has lagged with shares down about 6.5%. Buyers stepping into the group now are betting the earnings confirm the strength the stocks have already priced.
What Tuesday decides
JPMorgan, Wells Fargo, Citigroup, Goldman Sachs, and Bank of America report second-quarter results Tuesday before the open, with Morgan Stanley close behind on Wednesday. Wall Street expects JPMorgan to grow earnings around 10% and Goldman to post roughly $14.47 per share, up more than 30% on a surge in trading and advisory fees.
June CPI arrives the same morning at 8:30. A cool print would support the case that rate cuts are still coming and give the bank rotation more room to run. A hot one, especially with oil now spiking again, would tighten financial conditions and test whether today's buyers were early.
The test for the rest of the week is simple. If the banks deliver, the money that walked out of chips on Monday has a reason to stay in financials. If they stumble, the market loses the one group that held the line.
