Why Super Micro Computer (SMCI) Stock Just Skyrocketed 20%+ Today

Shares of Super Micro Computer (NASDAQ: SMCI) surged as much as 23% on Wednesday, trading near $31 after the AI server maker delivered a blockbuster preliminary update on its fiscal fourth quarter, sending the stock to its biggest single-day gain in months.

The catalyst was a margin upgrade. Super Micro said gross margin for the quarter is now expected to land between 15% and 17%, nearly double the 8.2% to 8.4% range management had guided to back in May. The company attributed the jump to a “favorable customer and product mix.”

Alongside the margin beat, Super Micro disclosed it booked more than $60 billion in new orders during the quarter, pushing its backlog to record levels. Revenue is still expected to come in at the low end of its $11.0 billion to $12.5 billion guidance range, but investors focused squarely on the order surge and improving profitability.

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Adding fuel to the rally, CEO Charles Liang recently revealed on social media that Super Micro is co-building a new gigawatt-scale AI datacenter for SpaceX and xAI — Elon Musk’s ventures, now merged under SpaceXAI. The tie-up underscores surging demand for Nvidia GPU-powered servers as hyperscalers and private AI players race to expand compute capacity.

The news rippled across the sector: Dell rose 5% and Hewlett Packard Enterprise gained 4% in sympathy, as investors bet the AI infrastructure buildout is accelerating broadly, not just for Super Micro.

Still, some caution is warranted. Super Micro carries a checkered accounting history, and Wednesday’s figures were preliminary. The company won’t hold its full earnings call until August 11, when investors will get a clearer picture of whether the margin recovery is sustainable.