AI and server revenue hit 20% of Alpha & Omega sales, but it still lost money
The company's fiscal first quarter shows AI and server revenue at a fifth of sales, from 5.5% a year ago, even as the PC base collapses and losses persist. December's guide is the falsifiable test of whether a mix shift becomes a profit story.
Richard Tang · 3 min read
Alpha & Omega Semiconductor (NASDAQ: AOSL)+21.43% — Alpha & Omega Semiconductor (NASDAQ: AOSL), up 21.43 percent today is the clearest small-scale picture of what the AI buildout does to a company built for the PC era. Its fiscal first-quarter release, dated November 5, 2026, and covering the September quarter, shows both halves at once: AI and server revenue grew more than 250% year over year to about 20% of the company, up from 5.5% a year ago 2, while traditional PC revenue fell roughly 30% sequentially 3.
Total revenue still came in at $177.8 million, down 2.6% from a year ago, and the company swung from a small non-GAAP operating profit a year ago to a $1.0 million loss and a $0.07 loss per share 1.
The margin gain is real, but it runs through a shrinking base
The loss persists because a richer product mix has to outrun two things at once: a decaying PC base and rising operating expenses. CEO Stephen Chang attributed the improvement in gross margin, to 25.2%, mainly to a better mix as medium-voltage MOSFETs win sockets in AI power conversion 2. But computing revenue fell to $83.2 million because elevated memory costs and component shortages are crushing traditional PCs 2, and management expects no near-term PC recovery 3. Meanwhile operating expenses keep climbing, to $52.5 million GAAP from $47.4 million a year ago 1.
Flat revenue as gross margin stays near 23%
AI mix is building while the revenue base stays near $170 million
- Revenue
- Gross margin
Data
| Revenue | Gross margin | |
|---|---|---|
| Q2 '24 | 161.3 | 25.7 |
| Q3 '24 | 181.9 | 24.5 |
| Q4 '24 | 173.2 | 23.1 |
| Q1 '25 | 164.6 | 21.4 |
| Q2 '25 | 176.5 | 23.4 |
| Q3 '25 | 182.5 | 23.5 |
| Q4 '25 | 162.3 | 21.5 |
| Q1 '26 | 163.8 | 21.1 |
| Q2 '26 | 170.4 | 23.1 |
December is the falsifiable test
Management guides to about $180 million of revenue plus or minus $10 million, roughly 10% year-over-year growth against a seasonally soft quarter, with non-GAAP gross margin of 25.7% and $46 million of operating expenses 1. That combination edges toward non-GAAP break-even, and the AI line should set another record.
Hit it, and the argument that the mix shift becomes a turnaround has its first quarter of proof; miss it, and AOSL is a shrinking PC-era chip company with a fast-growing niche.
The market has already priced the doubt
AOSL closed November 5 at $18.48, down 12.7% in the day's AI rout before the results even landed, and was indicated lower again after hours, valuing the company near $642 million 54. Sell-side targets still average $40.50, but the fresh calls move the other way 54.
Needham kept its Buy and cut its target from $45 to $30, and Stifel−1.14% — Stifel, down 1.14 percent today cut on lower comps 67. Bulls have a cushion in $152.8 million of net cash, though only $10 million to $12 million remains on the buyback authorization 52.
What a reader does while the test runs
The AI-server business at AOS is real, diversifying across power-supply and module makers, and most of those sockets did not exist in the revenue base a year ago 2. That earns the builders credit; they are the ones turning a raw capability into a business.
The decision rule the evidence supports: avoid or short until the December quarter shows the AI fifth of revenue converting into non-GAAP profit, because until then the mix shift is unproven while the PC base erodes underneath it, and the $152.8 million net cash is the bulls' cushion if the test fails 5.
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