Nvidia stake fuels AI-led stock rebound

U.S. stock indexes rose on July 21, 2026, as a renewed rally in artificial-intelligence related companies supported the broader market. The S&P 500 (SPX) gained about 0.8%, while the Dow Jones Industrial Average (DJIA) added 352 points. The Nasdaq composite outperformed with an advance of roughly 1.3%, reflecting strength in technology and chip names tied to AI demand.

Micron Technology (MU) and Nvidia were identified as the two strongest forces lifting the S&P 500 (SPX) during the session. Micron’s (MU) share price jumped about 10.1%, extending a rebound in chipmakers after earlier weakness. Nvidia’s stock also moved higher, rising around 1.6% intraday, and contributing significantly to the day’s technology-led gains.

The performance of these AI-linked stocks came as part of a broader, second consecutive day of recovery for chip and AI-related names following a sell-off the prior week. Investors focused on companies viewed as key beneficiaries of the ongoing build-out of AI infrastructure, which helped offset pockets of caution elsewhere in the market.

On the same day, Nvidia disclosed a roughly 9.3% passive stake in Nebius (NBIS), a Dutch company focused on AI cloud and infrastructure services. The announcement highlighted Nvidia’s involvement across segments of the AI ecosystem, extending beyond chip design into cloud-based compute and infrastructure partnerships.

The market reacted quickly to the disclosure. Nebius shares jumped about 15% on the news, signaling a strong response to Nvidia’s participation as a significant passive shareholder. Nvidia’s own stock also traded higher, with intraday gains reported in the mid–single digit percent range and specifically cited in the 1%–2% band across accounts.

The Nebius stake news reinforced the day’s broader narrative of investor interest in AI and cloud infrastructure. It added a company-specific catalyst for Nvidia at a time when AI beneficiaries were already leading index-level advances, supporting both Nebius’ valuation and sentiment toward large AI hardware and platform providers.

The AI-driven gains in equities occurred against a backdrop of rising energy prices and modestly higher bond yields. Brent crude oil (UKOIL) climbed above $90 per barrel and briefly approached $92 amid continued attacks linked to the war with Iran, factors that can increase input costs and inflation concerns. At the same time, the yield on the 10-year U.S. Treasury edged up to about 4.63% from 4.60% late the previous day.

Even with these macro headwinds, several stronger-than-expected profit reports from large U.S. companies helped support investor risk appetite. The combination of solid corporate earnings and focused enthusiasm for AI-related names allowed stocks to advance despite pressure from energy markets and interest rates. The session’s outcome underscored how AI sector momentum and positive earnings can offset concerns tied to geopolitics and inflation-sensitive assets.