Alpha and Omega Semiconductor: AI Server Business Set to Jump 60% Sequentially as Advanced Computing Nears 20% of Revenue
Fiscal Q4 2026 earnings call, August 12, 2026
Alpha and Omega Semiconductor used its fiscal fourth-quarter call to lay out one of the more aggressive near-term growth trajectories in its Advanced Computing business to date, even as the company continues to absorb collateral damage from a weakening PC market and, more unusually, a typhoon that struck its Shanghai packaging operations just days before the call.
Advanced Computing Becomes the Growth Engine
The headline number from the quarter was Advanced Computing revenue, which grew 35% sequentially in the June quarter and hit a record 31% of the Computing segment. Management is guiding for that momentum to accelerate sharply into the September quarter, with Advanced Computing revenue expected to grow more than 40% sequentially. Within that, CEO Stephen Chang said the AI and server sub-segment alone is expected to grow more than 60% sequentially and represent the majority of Advanced Computing revenue. By his estimate, Advanced Computing will exceed 40% of the Computing segment and approach 20% of total company revenue in the September quarter, a milestone that management is framing as validation of a multiyear strategic pivot toward higher-value, higher-margin silicon.
Chang attributed the strength to expanding customer engagement across power supply providers, module makers, ODMs, cloud service providers and hyperscalers for the company's medium-voltage MOSFET portfolio, and he was explicit about why this mix shift matters for profitability. "The products that we sell into these applications are high-performance products... where there's less competition, it is performance-driven, and we're able to command better pricing and better margin because these applications are very performance-critical," he said. CFO Yifan Liang echoed this, noting that the 200 basis point sequential gross margin improvement in the June quarter was driven primarily by product mix, with a smaller contribution from utilization, and that the additional 70 to 80 basis points guided for September is again mix-driven.
Typhoon Dolphin Disrupts Shanghai Packaging Operations
In a disclosure that wasn't on investors' radar heading into the print, Chang revealed that Typhoon Dolphin and subsequent flooding had struck portions of the company's Shanghai packaging operations just days before the call. Liang quantified the near-term financial impact as "a few million dollars" of revenue along with some margin pressure, both of which are already reflected in the September quarter guidance. Management said teams are working to restore capacity and recover delayed business in subsequent quarters, but the event adds a layer of near-term execution risk to an otherwise constructive guide.
PC Weakness From Memory Shortage Forces a Sequential Reset
The other side of the Computing segment ledger is considerably less favorable. Standard PC demand grew modestly in the June quarter, but Chang was direct in describing the September quarter as "an adjustment period" as customers grapple with memory and CPU shortages driving up costs. That weakness is expected to be fully offset by Advanced Computing strength, leaving the overall Computing segment roughly flat sequentially, but it underscores how binary the segment's fortunes have become. When pressed by B. Riley's Craig Ellis on visibility beyond the September quarter, Chang said December remains "a little fuzzy" and is contingent on how the memory situation evolves. Graphics card revenue is also expected to stay muted this calendar year in the absence of a major platform refresh, with the next release not expected until sometime in 2027.
Communications Segment Leaning on Tier 1 Smartphone Content Gains
Communications segment revenue rose 22.3% year-over-year in June, and management guided for another 10% sequential increase in September, driven by new product ramps with its Tier 1 U.S. smartphone customer. Chang noted that differentiated battery protection solutions supporting higher charging currents are increasing bill-of-materials content per device on premium platforms. Outside the premium tier, the picture is less favorable, with elevated memory pricing pushing some OEMs toward lower-performance components. AOS said it is deliberately prioritizing higher-performance sockets on premium platforms rather than chasing volume in the lower end of the market.
800-Volt Opportunity Still Early, But Coming
Asked about the timing of 800-volt power architectures for AI infrastructure, Chang declined to offer a firm forecast but signaled that meaningful business could emerge as early as next year. "I wouldn't be surprised that if next year, we see some business come for those applications," he said, adding that the transition would be gradual rather than a clean break from existing 48-volt platforms, with both coexisting for a period. This is a topic likely to draw increasing analyst attention as AI data center power architectures evolve, and AOS is positioning itself to participate in both the current and next-generation standard.
R&D Investment Cycle Expected to Normalize in Fiscal 2027
Non-GAAP operating expenses rose to $45.3 million in the June quarter from $44.3 million in March, driven by higher R&D spending tied to Advanced Computing product development, and are guided to step up again to $46.5 million in September. Liang indicated further modest increases are likely in the December quarter as the company continues filling open R&D positions. Importantly, Chang characterized this fiscal year as the primary investment period for building out engineering teams and technology capability, suggesting operating expense growth should moderate to a "more standard organic" pace in calendar 2027 rather than continuing to step up at the current rate.
Financial Results and Balance Sheet
Fiscal fourth-quarter revenue came in at $170.4 million, down 3.5% year-over-year but up 4% sequentially and above the midpoint of guidance. Non-GAAP gross margin was 23.7%, compared with 21.7% in the prior quarter and 24.4% a year ago. Non-GAAP EPS was a loss of $0.13 per share, an improvement from the prior quarter's $0.28 loss but a step down from the $0.02 profit posted a year earlier. Operating cash flow remained negative at $10 million, worse than the $8.3 million outflow in the prior quarter. The company ended the quarter with $180.8 million in cash, after receiving the final $15 million installment and completing a $150 million sale of its joint venture equity stake. For the September quarter, AOS guided revenue to approximately $176 million, plus or minus $10 million, with non-GAAP gross margin expected at 24.5%, plus or minus 1%.