---
title: "One unnamed customer is 56.8% of Alpha & Omega Semiconductor's revenue and 70.3% of its receivables"
description: "The 10-Q filed November 6 puts the same buyer behind 70.3% of its accounts receivable, at a company whose net loss just widened to $6.1 million. Most of what it is owed, and most of its AI growth case, now run through one customer."
publisher: "The Inference"
section: "Chips"
published: 2026-11-09T15:09:28.695Z
modified: 2026-11-09T15:09:28.695Z
canonical: https://theinference.org/article/one-unnamed-customer-is-56-8-of-alpha-omega-semiconductor-s-revenue-and-70-3-of-its-receivables
language: en
keywords: "Semiconductors, Earnings, Customer Concentration, AI Servers"
---

# One unnamed customer is 56.8% of Alpha & Omega Semiconductor's revenue and 70.3% of its receivables

> The 10-Q filed November 6 puts the same buyer behind 70.3% of its accounts receivable, at a company whose net loss just widened to $6.1 million. Most of what it is owed, and most of its AI growth case, now run through one customer.

[Alpha & Omega Semiconductor](https://theinference.org/markets/companies/alpha-omega-semiconductor), a power-chip supplier to servers, PCs and smartphones, [filed its quarterly report on November 6](https://www.stocktitan.net/sec-filings/AOSL/10-q-alpha-omega-semiconductor-ltd-quarterly-earnings-report-62e6ef7f941b.html), a day after [its earnings release](https://finance.yahoo.com/markets/stocks/articles/alpha-omega-semiconductor-reports-financial-210100149.html) [1][5]. One line in the filing is the fact the release left out: a buyer identified only as Customer B took 56.8% of September-quarter revenue [1]. None of the earnings coverage picked it up either [2][3][4][7].

## The growth is price, moving through a narrow channel

The chain from datacenter to filing runs through power delivery. AI servers need denser voltage conversion, and AOSL's medium-voltage MOSFETs, the transistor switches inside the intermediate bus converters that step down power in a server, are what that build-out buys [6]. AI and server revenue grew 250% year over year to about a fifth of company revenue, from 5.5% a year earlier [5][6].

*Chart: **Revenue is rangebound and every recent quarter ended in a loss** Column chart of Alpha & Omega Semiconductor's quarterly revenue and GAAP net income for the five quarters ended September 2026: revenue between $162 million and $183 million, net income negative in every quarter*

*Quarterly revenue and GAAP net income in US$ millions, calendar quarters, from Alpha & Omega Semiconductor's SEC filings. The series starts after a break in the earlier net-income figures. [8]*

The mix shows the shape: discrete transistor revenue rose by more than a quarter while power-management chip revenue fell by nearly half, and unit shipments fell almost a fifth while average selling prices rose by a fifth [1]. Nearly all of the quarter's revenue shipped through Hong Kong, where AOSL sells primarily through distributors [1]. Fewer, larger, higher-priced orders through a narrow channel is the pattern that ends with one buyer taking half the quarter.

## The dependence deepened as the story improved

Customer B was already more than half of revenue a year ago, and its share of receivables has climbed again since June [1]. Customer A, the next-largest buyer, slipped to 15.3% of revenue from 21.8% [1]. [On the earnings call](https://www.fool.com/earnings/call-transcripts/2026/11/06/aos-aosl-q1-2027-earnings-call-transcript/), chief executive Stephen Chang described an AI business spreading across power-supply makers and module makers, "a little more diversification than simply just going after one big opportunity" [6].

The customer table moves the other way. The net loss widened year over year even as gross margin improved [1], and [December guidance of $170–190 million](https://www.tokenpost.com/news/business/51771), growth in a usually softer quarter, likely holds only if the big buyer keeps ordering [3][6][7].

*Chart: **Customer B's share kept climbing on both measures** Bar chart of Customer B's share of Alpha & Omega Semiconductor quarterly revenue and quarter-end accounts receivable, rising from 53.8% to 70.3% across four periods*

*Customer B as a share of quarterly revenue and quarter-end accounts receivable, from AOSL's Form 10-Q filed November 6, 2026. [1]*

## A pause by Customer B would hit sales and collections together

Most of the receivables sit in one hand, so a pause would cut revenue and cash collection at once, and the loss would widen again [1]. No public source names the buyer, and nothing filed shows whether it is stocking up or working inventory down.

The market values AOSL near $704 million on the AI story [4]. That number rests on Customer B repeating its orders; it breaks if the buyer digests inventory or shifts suppliers, and it strengthens when a second large name shows up.

Next filing, read the customer table first. Until a second name appears beside Customer B, the AI turnaround and one buyer's order book are the same bet.

## Takeaway

Read the customer table first: 56.8% of Alpha & Omega Semiconductor's revenue and 70.3% of its receivables sit with one unnamed buyer, so the AI turnaround and one order book are the same bet until a second name shows up.

## Sources

1. [StockTitan, "Alpha & Omega Semiconductor Q1 loss widens to $6.14M | AOSL Quarterly Report (10-Q)", 6 November 2026](https://www.stocktitan.net/sec-filings/AOSL/10-q-alpha-omega-semiconductor-ltd-quarterly-earnings-report-62e6ef7f941b.html)
2. [GuruFocus, "Alpha & Omega Semiconductor Reports Q1 FY2027 Revenue of $177.8 Million, Narrowing GAAP Loss to $6.1 Million", 5 November 2026](https://www.gurufocus.com/news/9176445/alpha-omega-semiconductor-reports-q1-fy2027-revenue-of-1778-million-narrowing-gaap-loss-to-61-million)
3. [TokenPost, "Alpha and Omega Semiconductor Expects $170 Million to $190 Million for December Quarter", November 2026](https://www.tokenpost.com/news/business/51771)
4. [GuruFocus, "Alpha & Omega Semiconductor (AOSL) Reports Strong AI-Driven Revenue Growth in September Quarter", 6 November 2026](https://www.gurufocus.com/news/9182121/alpha-omega-semiconductor-aosl-reports-strong-aidriven-revenue-growth-in-september-quarter)
5. [Business Wire via Yahoo Finance, "Alpha and Omega Semiconductor Reports Financial Results for the Fiscal First Quarter of 2027 Ended September 30, 2026", 5 November 2026](https://finance.yahoo.com/markets/stocks/articles/alpha-omega-semiconductor-reports-financial-210100149.html)
6. [The Motley Fool, "AOS (AOSL) Q1 2027 Earnings Call Transcript", 6 November 2026](https://www.fool.com/earnings/call-transcripts/2026/11/06/aos-aosl-q1-2027-earnings-call-transcript/)
7. [AP via MSN, "Alpha and Omega: Fiscal Q1 Earnings Snapshot", 5 November 2026](https://www.msn.com/en-us/news/other/alpha-and-omega-fiscal-q1-earnings-snapshot/ar-AA2gQhuM)
8. [Alpha & Omega Semiconductor, quarterly figures from its SEC filings, retrieved 9 November 2026](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001387467)


---

One unnamed customer is 56.8% of Alpha & Omega Semiconductor's revenue and 70.3% of its receivables — The Inference. Canonical: https://theinference.org/article/one-unnamed-customer-is-56-8-of-alpha-omega-semiconductor-s-revenue-and-70-3-of-its-receivables