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.

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.