Astera Labs reported a record second quarter of fiscal 2026 for the three months ended June 30, 2026, with revenue of $392.4 million, up 27% sequentially and 104% year over year, on GAAP net income of $153.1 million and diluted earnings per share of $0.83. The print came in well ahead of where the company had guided three months earlier and, more telling for the next two quarters, management raised the third-quarter revenue forecast to a $540 million to $560 million range, a sequential step-up of roughly 40% that management attributed to the production ramp of the Scorpio X-Series, a 320-lane fabric switch that is expected to become the company's largest product family one quarter sooner than previously anticipated.
The one-sentence thesis is straightforward: Astera Labs is converting from a retimer-and-cable-module supplier riding the first wave of AI connectivity into a fabric-switch vendor that owns the scale-up and scale-out plumbing of the next-generation AI data center, and the third-quarter guidance is the first concrete evidence that the conversion is real rather than promised. Gross margin at 73.3% on a GAAP basis is a touch below where it sat a year ago, a product-mix cost of shipping more hardware modules and fabric switches, yet non-GAAP operating margin expanded in spirit as operating leverage from a $1.3 billion investment-grade balance sheet took hold. The company generated $162.3 million of operating cash flow in the first half, holds $1.25 billion in cash and marketable securities at quarter end, and carries no debt, so the growth is funded internally.
The single load-bearing risk is customer concentration, because the four largest customers together accounted for roughly 82% of second-quarter revenue, and Astera ships heavily into China, Taiwan, and Singapore on behalf of the world's largest hyperscale cloud operators. A pause in one hyperscaler's AI capital budget, a shift in production among contract manufacturers, or a further tightening of United States export controls on advanced compute would land directly on revenue within a quarter. The falsifiable clock is the fourth-quarter print: if the Scorpio ramp sustains revenue above $500 million into the December quarter with gross margin holding near 72%, the thesis of a durable multi-year AI connectivity buildout holds; if the guided $550 million third quarter proves to be a one-quarter spike ahead of customer digestion, the equity's generous multiple faces a rapid reset.