Micron closed Monday at $924.03, down $51.23 (−5.25%) from Friday's $975.26, on volume of 24.6 million shares
The rest of the memory and storage complex went with it: SanDisk −4.98% to $1,551.99, Western Digital −4.53% to $426.94, Seagate −2.97% to $805.55, Nvidia −3.36% to $210.96
There was no Micron warning, no guidance cut and no company news. The last reported quarter, June 24, produced revenue of $41.5 billion, adjusted EPS of $25.11 against a $21.39 consensus, and gross margin near 85%
The 10-year Treasury yield touched 5% Monday for the first time in three years — a level briefly seen in 2023 and otherwise not since 2007 — and settled at 4.992%
Brent crude traded above $108 and WTI closed at $101.79 (+1.74%) after a merchant vessel was struck in the Strait of Hormuz and Saudi Arabia shut the pipeline built to avoid it
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The selloff had no earnings attached to it
Monday's decline in memory stocks did not come from a company. It came from a conversation.
Over the weekend, a 27-year-old researcher named Jacob Coxon, who had resigned from Anthropic, posted publicly that researchers inside the leading labs "believe AI could kill all humans" and are building toward superintelligence anyway. Anthropic CEO Dario Amodei then called for slowing the pace of capability development. OpenAI's Sam Altman and xAI's Elon Musk followed within hours.
Altman wrote on X that the "world deserves confidence that American companies developing increasingly capable AI will act responsibly, especially as the trajectory of progress has steepened," adding that "every frontier lab must deliver on this, and there is no reason any of us should come to work if we cannot." He was explicit that pacing development does not mean stopping it — only that it "should be slower than it otherwise could be."
Markets did the arithmetic in one line. Slower development eventually means slower data-center buildout. Slower buildout means fewer racks. Fewer racks means less DRAM and less NAND. The names that sell the memory inside every AI server were sold first and hardest.
What Micron actually reported, and when it reports again
Nothing in Monday's tape changed a number Micron has published.
The company's most recent results, released June 24 for the quarter ended May 28, were the best in its history: revenue of $41.5 billion, adjusted earnings of $25.11 per share versus a $21.39 analyst consensus, and gross margin near 85%. Data-center revenue alone exceeded $25 billion in the quarter, an annualized run rate above $100 billion. CEO Sanjay Mehrotra called it "an exceptional fiscal Q3, with significant records in revenue, gross margin and EPS — all exceeding the high end of our guidance."
The high-bandwidth-memory business, the piece tied directly to AI accelerators, is running ahead of plan. Micron said its HBM4 12-high volume ramp is tracking twice as fast as the HBM3E generation before it, with more than $1 billion of HBM4 revenue already shipped. Nvidia has qualified Samsung, SK hynix and Micron as HBM4 suppliers for its Vera Rubin platform. And Micron's entire 2026 HBM production capacity is sold out under fixed-price contracts — meaning this year's volume and this year's price are already contractually set, whatever any lab decides about its research pace.
Fiscal fourth-quarter results are due September 30. That is the next date on which the company itself gets to speak.
The stock's 52-week range runs from $154.65 to $1,255, with the high set on June 25. Monday's close leaves it roughly 26% below that peak, after a year in which it more than quintupled off the low. This is what the AI trade looks like when the same night produces opposite reactions: positioning, not fundamentals, sets the price on days like this one.
Two other bills came due on the same day
The AI story did not have Monday to itself.
The 10-year Treasury yield hit 5% intraday, the first time in three years, before settling at 4.992%. The 30-year reached 5.372%, its highest in nearly two decades. The move came despite Treasury Secretary Scott Bessent's efforts to calm a nearly $32 trillion government debt market. Higher long yields feed straight into mortgage rates, auto loans and corporate refinancing — and they compress the multiple investors will pay for earnings that arrive years from now, which is precisely the kind of earnings the AI complex is priced on.
Energy supplied the other shock. A merchant vessel was struck in the Strait of Hormuz on Sunday, killing one crew member and injuring three. Saudi Arabia then suspended its East-West pipeline — the 1,200-kilometer Petroline, built in 1981, running from the Abqaiq fields to the Red Sea port of Yanbu with a maximum capacity of 7 million barrels per day — after drone strikes damaged it in two areas near Riyadh and Medina. Al Jazeera reports the line normally moves 4 to 5 million bpd and that the closure touches up to 5% of global oil supply. Reuters sources say repairs could take five to six weeks. Oman postponed planned Iran–Gulf talks on the future of the waterway. Brent for October and November delivery gained more than 3% to clear $108; WTI settled at $101.79.
That combination — oil up, long yields up — is why the Fed's meeting this week can't drill a well. Rate policy does not reopen a pipeline.
Where the tape closed
S&P 500: 7,619.98, −37.00 (−0.48%)
Dow Jones Industrial Average: 52,421.20, −152.09 (−0.29%)
Nasdaq Composite: 26,186.41, −146.62 (−0.56%)
VIX: 17.10, +1.26 (+7.95%)
10-year Treasury: 4.992%
WTI crude (Oct): $101.79, +1.74%
Not everything sold. Cybersecurity names rose as investors read the safety debate as spending that has to happen. Rumble's RUM Group jumped 22% on confirmation of a $13.7 billion compute contract with Anthropic. GSK added 3% on lung-cancer trial data. Coinbase rose 6% to $185.34 after a Compass Point upgrade to Neutral with a $177 target, ahead of a Senate floor vote on the CLARITY Act; Strategy gained 3% to $135.20 while MARA fell 2% to $11.69 on a JPMorgan downgrade. Baldwin Insurance agreed to a $7.7 billion cash take-private.
And the largest AI capital commitment of the week ran in the opposite direction of the safety rhetoric: Reuters reported that Anthropic is seeking to raise as much as $100 billion at a valuation near $2 trillion, with Nvidia in talks to invest up to $10 billion as anchor. The same firms asking for a slower pace are assembling what could be the largest IPO in history, before November's midterms.
What lands next
The FOMC began its two-day meeting Tuesday. Fed funds futures put roughly a 90% probability on a 25-basis-point hike Wednesday to 3.75%–4.00% — the first increase in more than three years and the first under Chair Kevin Warsh, who held rates at 3.50%–3.75% through his first two meetings. President Trump has publicly demanded a cut instead. HSBC economists expect two more hikes in total, a pause ahead of the November midterms and a further hike in December. The vote arrives Wednesday either way.
Tuesday's calendar carries the September Empire State manufacturing index, forecast at 14.1 against 20.6 prior, Treasury Secretary Bessent's annual testimony before the House Financial Services Committee, and a $13 billion 20-year bond reopening that will test appetite at these yields. Wednesday brings August retail sales at 8:30 a.m. ET, with consensus at +0.8% after July's −0.6%, then the Fed decision and Warsh's press conference. FedEx and Lennar report later in the week, with Lennar's Q3 due September 17 at a $1.30 EPS estimate.
Micron reports September 30. Between now and then, the stock trades on what other people say about artificial intelligence rather than on what Micron sells. Monday was the first full demonstration of that, and diesel prices setting records nobody reported is a reminder of how often the tape prices the story instead of the shipment.
This article is for informational and educational purposes only and does not constitute investment advice or a recommendation to buy or sell any security.
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