The Session

Tuesday's close confirmed what Monday's trading had begun: this was not a single-stock correction or a reaction to one data point. The Nasdaq Composite fell 2.4%, the S&P 500 and Dow declined alongside it, and futures for both the S&P 500 and Nasdaq 100 extended losses into the evening. The breadth of the move — spanning U.S. equities, Asian indices, and semiconductor supply chains across multiple continents — marked it as a sentiment shift rather than a localized shock.

The session's defining characteristic was the absence of a clean catalyst. No earnings miss triggered the selling. No single Fed statement broke the market. Instead, investors appeared to collectively reassess a question that had been building for months: whether the enormous capital expenditure being poured into AI infrastructure will generate returns fast enough to justify the valuations attached to the companies building it.

Winners and Losers

Memory chips absorbed the sharpest losses of the day. Micron Technology (MU) fell 11%, SanDisk (SNDK) dropped 11%, and Western Digital (WDC) slid 10%. The mechanism was partly contagion from Asia: South Korea's Kospi index fell nearly 10%, dragging global sentiment lower given Korea's deep integration into the high-bandwidth memory supply chain that feeds AI accelerators.

The irony embedded in Micron's decline is hard to miss. The company's stock had surged nearly ninefold over the prior year, powered by a shortage of high-bandwidth memory — the specialized chips used in AI processors — and heavy orders from Microsoft (MSFT), Alphabet (GOOGL), and Meta (META). That extraordinary run-up left the stock exposed to any sentiment reversal. When investors began questioning the pace of AI capital spending, memory names — effectively a leveraged bet on the AI buildout — repriced first and hardest.

Nvidia (NVDA) and Alphabet were also cited among notable decliners in the broader session. Alphabet carried an additional company-specific weight: the stock fell for a second consecutive day following the departure of prominent AI researcher John Jumper to rival startup Anthropic. The talent loss added a strategic dimension to what was already a difficult macro backdrop for the Google parent.

Tesla (TSLA) faced its own separate pressure. The company disputed allegations that its driver-assistance software was responsible for a fatal crash in Texas, in which a Model 3 struck a house and killed a woman. The legal and reputational overhang from incidents like this one is a recurring feature of Tesla's stock narrative, particularly as the company's valuation increasingly reflects expectations for a fully autonomous robotaxi business rather than conventional vehicle sales.

The session's clearest outlier was Exxon Mobil (XOM), which received a favorable ruling from the U.S. Supreme Court in a long-running dispute over assets seized by Cuba's government under Fidel Castro. The court reversed a lower court decision and sent the case back for further proceedings against Cuban state entity Corporación CIMEX. The ruling does not guarantee Exxon will ultimately collect compensation, but it clears a significant procedural hurdle and keeps the litigation alive.

Under the Surface

The bond market told a different story from equities — and the contrast was sharp. While public-market investors were selling AI-linked stocks on valuation concerns, SpaceX was simultaneously raising $20 billion in its debut investment-grade bond offering. Bank of America, Citigroup, Goldman Sachs, JPMorgan Chase, and Morgan Stanley arranged investor calls for the deal.

The timing is worth pausing on. A $20 billion investment-grade issuance from a high-profile technology and aerospace issuer is a significant event for fixed income markets in its own right. That it arrived on the same day equity investors were fleeing AI-linked names illustrates a divergence in how different parts of the capital markets are pricing the AI theme. Fixed-income investors, who rank ahead of equity holders in a company's capital structure and are typically more focused on near-term cash flows and credit quality, appeared comfortable extending capital to SpaceX even as equity markets grew queasy about AI multiples broadly. The deal follows SpaceX's Nasdaq listing and signals the company is diversifying its funding sources beyond equity and private capital.

Federal Reserve policy expectations continued to act as a headwind across the session. Higher-for-longer rates are particularly damaging for growth-oriented technology stocks, whose valuations depend on discounting future earnings back to the present — a calculation that becomes less favorable as interest rates rise. The macro pressure compounded an already difficult environment for high-multiple names.

Tomorrow's Setup

The most immediate data point on the calendar is U.S. PMI data — the Purchasing Managers' Index, a survey-based gauge of business activity — due Wednesday. The reading will be watched for signs of whether the broader economy is absorbing tighter financial conditions, and whether it provides any support for or challenge to the Fed's current rate stance.

For chip investors, the key question heading into the next session is whether Tuesday's selling represents a valuation reset or the beginning of a more sustained cycle turn. Memory markets are historically boom-and-bust: shortage periods attract new supply, which eventually tips the market into oversupply and price collapse. The current selloff sent Micron down 11% in a single session despite fundamentals that analysts describe as rarely stronger — a signal that at least some investors are front-running a potential cycle peak rather than waiting for earnings to confirm it.

Micron's next earnings report will be a sharper test of that thesis. For now, the market is not waiting for the data. It is repricing the risk that the AI cycle, like every semiconductor cycle before it, will eventually turn.