Memory chip rout deepens 8% as crowded trade unwinds before CPI

Memory stocks suffered their worst session in months as an overcrowded semiconductor trade collapsed and crude surged on Hormuz Strait tensions, resetting the macro backdrop before Tuesday's CPI print.

The Nasdaq 100 fell 1.7% as the memory chip index plunged 8%, the semiconductor sector's worst single-day rout since the AI trade began.

"This is a positioning flush, not a thesis breakdown — the AI spending cycle remains intact, but the memory trade was the most crowded in the market," said Sarah Lin, equity strategist at Edgen.

The iShares Semiconductor ETF dropped 4%, dragged by SanDisk's 10% decline, Micron's 6% loss, and Seagate's 6% retreat. AMD and Intel each fell about 4%. SK Hynix, which debuted on the Nasdaq last week with a 13% pop, reversed 7% in its second session after Seoul sold the stock hard enough to post its largest single-day drop on record. The selloff spread to Western Digital and Astera Labs, which fell 8.8% or more.

The unwind comes at a precarious moment. Six of the largest U.S. banks report earnings this week, with FactSet estimating 23% year-over-year earnings growth. Tuesday's CPI print is expected to show headline inflation cooling 0.2% month-over-month, but the 3.8% annual rate leaves no room for the Fed to signal patience — especially with crude oil surging.

Crude added a second layer of pressure. WTI jumped more than 5% to above $75 a barrel after President Donald Trump posted on Truth Social calling the U.S. the "Guardian of the Hormuz Strait" and announced a 20% cargo reimbursement on all shipping through the waterway. Brent gained 5.3% to around $80. The spike compounds inflation risk the day before the CPI release, when Federal Reserve Governor Kevin Warsh also testifies before the House Financial Services Committee.

The S&P 500 held up better than the Nasdaq, closing 0.6% lower. The Dow fell about 56 points, or 0.1%, supported by gains in healthcare and consumer staples. Telecom was the worst S&P sector, down 3.1%, followed by technology at minus 1.9%. Real estate, healthcare, and consumer staples each rose more than 2%.

The U.S. 10-year Treasury yield edged higher as traders priced a higher-for-longer rate scenario. The dollar index held firm near recent highs, while gold added to gains as a hedge against the crude-driven inflation narrative.

Nasdaq-100 Tests Key Support

The Nasdaq-100 is the index under the most technical pressure. It settled near its 50-day moving average at 29,760, a level that failed to attract buyers. A sustained break below that threshold puts last week's low at 28,909 on the radar. The S&P 500 held above Fibonacci support at 7,540, but bulls need to retake 7,628 to prove the two-day rally off Thursday's low is still alive. The Dow traded between a pair of 50% retracement levels at 52,674 and 53,000, a range that signals trader indecision ahead of the week's data.

Bank Earnings Hold the Rotation Key

JPMorgan Chase, Goldman Sachs, Morgan Stanley, Bank of America, Citigroup, and Wells Fargo all report this week. Their stocks traded lower ahead of the numbers. If the banks clear the elevated earnings bar, the tech weakness may stay contained to memory chips. A miss could accelerate the rotation out of equities entirely, with defensives already showing relative strength Monday.

The memory selloff says more about expectations than AI fundamentals. Micron's latest earnings showed record revenue, and high-bandwidth memory remains sold out well into future production. The concern is that expanding capacity will eventually push average selling prices lower — a dynamic that has punished memory stocks through every cycle. A memory company can ship 30% more chips and earn less if prices fall 20%.

This article is for informational purposes only and does not constitute investment advice.