Fiscal Q1 2027 earnings call, November 5, 2026: gross margin expands 150 basis points on richer mix while traditional PC demand falls roughly 30% sequentially
AI and server power is changing the revenue mix faster than management expected
Alpha and Omega Semiconductor reported September quarter revenue of $177.8 million, up 4.3% sequentially and down 2.6% year-over-year, slightly above the midpoint of guidance. The headline understates what happened underneath. Advanced Computing, which covers AI, servers and graphics cards, grew more than 50% sequentially and 80% year-over-year to nearly 23% of total revenue, ahead of the company's own guidance for growth of more than 40%. AI and server applications made up nearly 90% of that line, or roughly 20% of company revenue, against 5.5% a year ago. Within Advanced Computing, AI and server revenue rose more than 65% sequentially and more than 250% year-over-year.
The driver is medium-voltage MOSFETs, notably for intermediate bus converter applications, a power conversion stage that is new territory for the company. CEO Stephen Chang described the effect on the business model directly: the AI exposure is "the key reason why the margin is improving." Management is now openly discussing whether to break AI out as a separate reporting segment, though Chang offered no timetable, saying only that the topic is under internal discussion.
The newness of the revenue is worth underlining. Asked how much of the growth comes from new platform wins versus higher volumes on existing sockets, Chang answered that "most of these sockets actually didn't exist in terms of revenue this time last year." The business is therefore early-cycle, with limited history to judge durability. Chang also acknowledged there is "no seasonality happening just yet" because the AI program only began taking off at the start of this year. Visibility is improving, with some longer-term commitments and forecasts from customers, but other areas remain relatively new.
Customer breadth is better than a single-hyperscaler bet, but the 800-volt story is unchanged
Management is emphasizing module makers, who in turn sell to various end customers, alongside power supply makers and ODMs. Chang framed this as providing "a little more diversification than simply just going after big opportunity." Investors should note that the company did not quantify customer concentration or disclose any specific hyperscaler relationships.
On the 800-volt AI server architecture, which Lake Street's Tyler Burmeister noted previously pointed to first revenue in 2027, Chang said there was no major update: "we are progressing along with that." He argued that rising power levels and the company's entry into the middle conversion stage position it for both medium-voltage and wide bandgap products. That is a reasonable thesis, but with no new timing or design-win disclosure, it remains an option rather than a modeled revenue stream.
Gross margin improves on mix, with pricing turning modestly favorable
Non-GAAP gross margin reached 25.2%, up from 23.7% in the June quarter and 24.1% a year ago. CFO Yifan Liang told Stifel's analyst that the 150 basis point improvement came mainly from better product mix, with pricing contributing "to a lesser extent." He noted the pricing environment has shifted from neutral in the June quarter to "slightly favorable" in September. The company guides December non-GAAP gross margin to 25.7%, plus or minus 1%, which implies further but modest progress.
The company still posted a non-GAAP loss of $0.07 per share, narrowed from a $0.13 loss in the prior quarter but well below the $0.13 profit of a year ago. Non-GAAP operating expenses of $45.9 million consumed most of the gross profit, and EBITDAS of $12.2 million compares with $19.4 million a year earlier. The margin story is real, but the company is not yet earning a profit on it.
Traditional PC is deteriorating, and management sees no near-term recovery
The negative side of the ledger is sharp. Traditional PC-related revenue fell roughly 30% sequentially, and total Computing revenue of $83.2 million fell 14.3% year-over-year despite the AI surge. Management blamed elevated memory costs and broader component shortages, and said flatly that it does not "expect a near-term PC recovery." For the December quarter, it expects Computing revenue to decline mid-to-high single digits sequentially, with record Advanced Computing revenue more than offset by PC weakness.
This is a reversal in tone from the prior quarter, when management had suggested September might mark a trough. Asked when the market might bottom, Chang said the bulk of the drop occurred in September but that the challenges "will continue to persist in the near future," and he gave no estimate of a floor. His explanation was that customers had built at elevated production levels in the first half of the calendar year and then cut when they saw demand falling, so AOS is experiencing an inventory correction in its part of the supply chain. Burmeister pressed on whether AOS is underperforming the PC market decline, and the response did not dispute the premise, attributing the gap to customer timing rather than share loss.
Consumer is also weak. Revenue of $16.1 million fell 22.9% sequentially and 31.4% year-over-year, with declines in home appliances, gaming and wearables. Management guides it flattish for December.
Smartphone battery protection and industrial markets add diversification
Communications revenue of $37.8 million grew 15.0% sequentially and 15.8% year-over-year, above the guide of roughly 10%, on a strong ramp of battery protection products for the company's Tier 1 U.S. smartphone customer. Battery PCM revenue rose more than 50% sequentially on new flagship production ramps. Management sees additional content opportunity in foldable and multi-screen devices, which use multiple batteries each needing protection circuitry. The offset is China, where rising memory costs are pressuring smartphone affordability and leading some manufacturers to cut component specifications. The company guides Communications up mid-teens sequentially in December, and more than 20% year-over-year.
Power Supply and Industrial revenue of $38.7 million rose 29.2% sequentially and 38.8% year-over-year, led by power supplies, power tools, motor control and DC fans. DC fans hit record revenue, supported in part by cooling requirements in AI servers and data centers, a second channel into AI capex. The December guide is for high-single-digit sequential growth, led by E-Mobility demand for electric motorcycles and scooters in emerging markets, and more than 50% year-over-year.
December guidance implies counter-seasonal growth; balance sheet is adequate
The company guided December revenue to approximately $180 million, plus or minus $10 million, up slightly sequentially and about 10% year-over-year. Non-GAAP operating expenses are guided to $46 million, plus or minus $1 million, and capital expenditure to $12 million to $14 million, up from $9.2 million in the September quarter.
Operating cash flow turned positive at $5.6 million from negative $10.0 million in the prior quarter. Cash declined to $175.2 million from $180.8 million. Days sales outstanding rose to 26 from 23, while inventory days improved to 133 from 138. By product line, DMOS revenue rose 21.1% sequentially to $137.2 million, while Power IC revenue fell 30.2% to $38.7 million, down 46.8% year-over-year.
On capital allocation, Burmeister asked about buybacks given the share price weakness. Liang said the board evaluates capital allocation from time to time and that $10 million to $12 million remains under the existing authorization, adding only, "we'll see." That is a noncommittal answer and a small amount relative to the cash balance.
Joint venture recapitalization trims the stake but books a gain
The majority shareholder of the company's China joint venture injected approximately $344 million of capital, and the JV used part of it to retire the equity interests of all shareholders smaller than AOS. The company's stake fell from 18.9% to 15.1%, and it recognized a $4.0 million gain, excluded from non-GAAP EPS. The dilution reduces AOS's share of any future JV value, though the company did not discuss strategic implications on the call.