NVIDIA shares fell 5% on July 28, their steepest one-day drop in six months, erasing roughly $250 billion in market value. The selloff had a trigger, a backdrop and a subplot. The trigger was a technology breakthrough at a Chinese memory maker. The backdrop was a string of capital moves that have made NVIDIA simultaneously the biggest beneficiary and the biggest creditor of the AI boom. The subplot involved an employee, a detention and the expansion of export controls to individuals.
The immediate catalyst was news that ChangXin Memory Technologies, known as CXMT, had made a significant advance in DRAM production. CXMT’s progress, reported by multiple outlets, fed fears that Chinese chip makers are closing the technology gap faster than expected and that demand for advanced memory from U.S. suppliers could be squeezed. AMD and Micron fell more than 3% alongside NVIDIA, a sign that investors read the news as a threat to the entire sector rather than a single company.
Taiwan’s investigation authorities added to the anxiety. They detained an NVIDIA employee on suspicion of illegally shipping advanced chip-manufacturing equipment to mainland China, according to officials familiar with the case. The investigation marks an escalation: export controls that have historically targeted companies are now being enforced against individuals, a criminalization trend that lawyers who follow the semiconductor industry say will make employees at every level more cautious about cross-border work. NVIDIA said it was cooperating with the authorities and declined to comment on the specifics.
The three capital moves that surfaced the same day gave the slide a second dimension. The Financial Times reported that NVIDIA has committed $50 billion to lease data center capacity in Texas, with the entire capacity to be filled with its own chips. The Wall Street Journal reported that NVIDIA is in talks to provide financing guarantees for OpenAI’s planned $250 billion data center project in Ohio, a facility designed to run on NVIDIA hardware. And the company confirmed a $5 billion investment in Safe Superintelligence, the lab founded by former OpenAI chief scientist Ilya Sutskever.
Analysts at Morningstar described these transactions as “circular” in character: NVIDIA lending or guaranteeing money so that customers can buy NVIDIA chips, then leasing the resulting data centers back to those same customers. The arrangement boosts demand in the near term and locks in NVIDIA’s hardware, but it also concentrates risk. If the AI buildout slows, or if one of the guaranteed projects stumbles, NVIDIA could find itself carrying obligations it once kept off its balance sheet. “These structures are clever, but they move risk from the customer to the chip maker,” said one semiconductor analyst. “The question is what happens when the music stops.”
The Ohio deal is particularly notable for its size. A $250 billion data center project would rank among the largest industrial investments in American history, and NVIDIA’s willingness to guarantee financing for it shows how far the company is willing to go to protect its hardware monopoly in AI compute. OpenAI, which has said it needs enormous compute capacity to train and run its models, gets a capital structure it could not otherwise afford on its own balance sheet. The market’s worry, according to people familiar with investor sentiment, is that such guarantees effectively subsidize demand that might not exist without them.
The detention and the CXMT news point in the opposite direction, toward a future in which NVIDIA’s customers may no longer depend on it. U.S. export controls have already limited what China can buy, but Chinese labs have responded by building their own supply chains, and CXMT’s progress suggests those efforts are bearing fruit. If Chinese memory and logic chips continue to improve, the addressable market for U.S. components shrinks, and the circular transactions that prop up current demand become harder to sustain.
Despite the slide, analysts at Morningstar and elsewhere said NVIDIA’s valuation now looks reasonable. The stock’s decline this month has brought its price-to-earnings multiple down substantially from the levels that prevailed earlier in the year, and the company’s near-term earnings power remains formidable, with data center revenue still growing at a rapid clip. The debate, investors say, is not about the next two quarters but about the shape of the market in 2027 and beyond.
The episode also highlighted how interconnected NVIDIA’s fortunes have become with those of its largest customers. The company no longer simply sells chips; it leases facilities, guarantees loans and invests in the labs that buy its products. That web of relationships creates a powerful flywheel when demand is rising, and a potentially heavy burden when it is not.
For now, the market is choosing caution. The 5% drop erased more than the gains of the previous week, and traders said the move was amplified by options positioning rather than fundamental news. The deeper questions, about Chinese competition, individual liability under export rules and the durability of circular financing, will not be resolved by a single trading session.
