Key Highlights

● AMD traded at $552.90 during the session as semiconductor stocks rebounded.

● The gain came without major company-specific news.

● Super Micro Computer surged as servers with AMD's EPYC 9006 processors began shipping.

● Nvidia's after-hours decline could test chip sentiment on Thursday.

Advanced Micro Devices (NASDAQ:AMD) climbed on Wednesday, trading at $552.90 during the session as semiconductor stocks staged a powerful rebound. The gain came without major company-specific news; instead, AMD rode a sector-wide rally after a strong report from AI cloud provider CoreWeave (NASDAQ:CRWV) revived confidence in data-center spending.

AMD designs processors and graphics chips for PCs, gaming consoles and data centers. Its Instinct accelerators compete in the market for AI chips, and its EPYC server processors are widely used in cloud computing. That broad exposure to data centers means the stock tends to move sharply with any change in the outlook for AI infrastructure.

There was a product tie-in, too. Super Micro Computer (NASDAQ:SMCI) surged after saying its H15 servers featuring AMD's sixth-generation EPYC 9006 processors were now shipping.

The broader chip complex rallied together. Intel (NASDAQ:INTC) jumped, Marvell (NASDAQ:MRVL) and Broadcom (NASDAQ:AVGO) rose, and memory makers Micron (NASDAQ:MU) and Sandisk (NASDAQ:SNDK) surged. Equipment makers including Applied Materials (NASDAQ:AMAT) and Lam Research (NASDAQ:LRCX) also gained.

CoreWeave's beat

CoreWeave reported third-quarter Revenue of $3.66 billion, more than double a year earlier and ahead of estimates near $3.54 billion to $3.55 billion. It raised its 2026 revenue outlook to $13.0 billion to $13.3 billion, guided adjusted Operating Income to $1.275 billion to $1.375 billion against a $1.07 billion consensus, and reported a Backlog of about $132.5 billion.

"Demand for compute is growing faster than the capacity to deliver that infrastructure," CEO Michael Intrator said on the earnings call.

The figures arrived after last week's AI-capex scare, when chip stocks were sold on fears that data-center spending might be topping out. One strategist cited a "sentiment bump coming from CoreWeave results," while Berenberg said, "Investors are buying back into positions with valuations now considerably lower."

How the market traded

The Philadelphia Semiconductor index soared, and technology was the top-performing S&P 500 sector by a wide margin. The S&P 500 rose 98.45 points to 7,619.38, the Nasdaq Composite gained 400.31 points to 25,466.19 and the Dow Jones Industrial Average added 254.60 points to 52,486.49. The Russell 2000 climbed 24.88 points to 2,846.26, and the VIX fell to 17.49. The Nasdaq erased its post-election losses.

The Bond Market was closed for Veterans Day. Investors remain focused on rates after Tuesday's hotter-than-expected October consumer price report, which left a December Federal Reserve rate hike seen as nearly fully priced. Fed Governor Michelle Bowman said Tuesday that "the latest data suggest that these pressures may be broadening."

Nvidia's After-Hours Move Tests AMD

The rebound faces a quick test. After the bell, Nvidia (NASDAQ:NVDA), AMD's chief rival in AI accelerators, fell in after-hours trading following newspaper reports about its leadership, and Nasdaq-100 futures slipped. How AMD trades in that environment could be telling, as investors weigh sector-wide sentiment against competitive dynamics.

Thursday's calendar includes Nebius (NASDAQ:NBIS) results before the open, weekly jobless claims at 8:30 a.m. Eastern time, and Cisco (NASDAQ:CSCO) and Applied Materials reports after the bell. October producer prices follow on Friday.

Nvidia's November 17 earnings report will offer the next major read on AI accelerator demand, and Anthropic's expected initial public offering next week could also shape sentiment toward AI. The Federal Reserve meets December 8 and 9.