Super Micro Stock Surges 18% After Strong Guidance

CNBC reported Tuesday that Super Micro Computer shares surged 18% in after-hours trading following a stronger-than-expected quarterly outlook. The AI server maker’s Super Micro guidance eclipsed Wall Street forecasts even as third-quarter revenue came in below expectations.

Revenue Doubles but Misses the Bar

Super Micro posted fiscal third-quarter revenue of $10.24 billion, up 123% from the same period a year earlier. Analysts had penciled in roughly $12.33 billion. Adjusted earnings per share of 84 cents, however, handily beat the 62-cent consensus.

CEO Charles Liang attributed the gap partly to customer readiness issues. Some clients lacked the power infrastructure and networking capacity needed for cloud deployment. The company expects to book that deferred business in coming quarters.

CFO David Weigand pointed to broader industry supply headaches. Memory prices have climbed sharply. Shortages of graphics processing units and Intel processors also weighed on the period.

Guidance Drives the After-Hours Rally

For the fiscal fourth quarter, management guided for revenue of $11 billion to $12.5 billion and adjusted earnings per share of 65 to 79 cents. Both ranges exceeded the LSEG consensus of $11.07 billion and 55 cents per share. The beat was enough to overshadow the revenue miss and send the stock sharply higher.

Background: Legal Trouble and a Co-Founder’s Exit

Super Micro entered the quarter carrying significant legal baggage. Federal prosecutors in the Southern District of New York charged associates of an unnamed U.S. server company with illegally routing Nvidia-powered servers to China. Super Micro acknowledged that one defendant was a co-founder and company executive. That individual, Wally Liaw, subsequently left the board and severed all ties with the firm.

Liang told analysts the company appears to have been a victim rather than an orchestrator of the alleged scheme. Weigand added that management does not expect any restatements of past financial results. Customers, meanwhile, appear largely undeterred. Relationships with partners including Nvidia and Broadcom remain intact, Liang said.

Manufacturing Push Adds to Bullish Case

Super Micro is expanding its domestic footprint to meet surging AI infrastructure demand. The company has opened new Silicon Valley manufacturing facilities and in April announced a fourth Bay Area location spanning more than 714,000 square feet. That site will house manufacturing, design, testing, and service operations.

Shares were down roughly 5% for 2026 heading into Tuesday’s close, trailing the S&P 500’s 6% gain. The after-hours move, if it holds, would meaningfully close that gap.

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