Why did Alpha and Omega Semiconductor (AOSL) stock move recently?

On 9/2/2026, Alpha and Omega Semiconductor moved +4.1% — No company-specific news, filings, or earnings-related catalyst on Sept 2; AOSL rose with the broader semiconductor sector/market. This is MarketChacha's decoded reason from filings and credible news; it is education, not buy/sell advice.

Is Alpha and Omega Semiconductor (AOSL) overvalued or fairly valued?

MarketChacha shows Alpha and Omega Semiconductor's valuation in context — a forward P/E of about 80.0, a price-to-book of about 1.0 — alongside its revenue and profit growth and whether reported profit converts into operating cash, so you can judge value for yourself. MarketChacha does not issue ratings, price targets, or buy/sell advice.

What is Alpha and Omega Semiconductor's revenue?

Alpha and Omega Semiconductor reported revenue of $696.2M for FY2025, with net profit of $-97.0M, per official filings.

What is the share price of Alpha and Omega Semiconductor (AOSL)?

Alpha and Omega Semiconductor last traded at $25.20 (+3.1% on the day), as of 9/4/2026 — a delayed quote shown for education, not investment advice.

Alpha and Omega Semiconductor

AOSL · NYSE · Technology · United States

Snapshot

TickerAOSL

ExchangeNYSE

SectorTechnology

IndustrySemiconductors

CountryUnited States

Employees2,519

HeadquartersSunnyvale, United States

Websitewww.aosmd.com

Filings tracked13

About Alpha and Omega Semiconductor

Alpha and Omega Semiconductor Limited designs, develops, and supplies power semiconductor products for computing, consumer electronics, communication, and industrial applications in Hong Kong, China, South Korea, the United States, and internationally. The company offers power discrete products, including metal-oxide-semiconductor field-effect transistors (MOSFET), Shielded-Gate low voltage and mid-voltage MOSFETs, SuperJunction high voltage MOSFETs, and trench-stop insulated gate bipolar transistors (IGBTs), as well as application specific MOSFETs for use in smartphone chargers, battery packs, notebooks, desktop and servers, data centers, base stations, graphics card, game boxes, TVs, AC adapters, power supplies, motor control, power tools, e-vehicles, white goods and industrial motor drives, UPS systems, solar inverters, and industrial welding. It also provides power ICs that deliver power, as well as control and regulate the power management variables, such as the flow of current and level of voltage. The company's power ICs are used in flat panel displays, TVs, notebooks, graphic cards, servers, AI datacenters, DVD/Blu-Ray players, set-top boxes, and networking equipment. In addition, the company offers transient voltage protection products, analog switches, and electromagnetic interference filters for notebooks, desktop PCs, tablets, flat panel displays, TVs, smartphones, and portable electronic devices. Further, it provides silicon carbide, IPM, TVS, and HV gate drivers; and power modules, multiphase controllers, EZBuck regulators, and diode protection switches. Alpha and Omega Semiconductor Limited was incorporated in 2000 and is headquartered in Sunnyvale, California.

Who owns it

Insiders7.0%
Institutions76.9%
Public & other16.1%

297 institutional holders

Ownership breakdown from public market data.

Top holders

Blackrock Inc.14.07%
State Street Corporation7.76%
Manufacturers Life Insurance Co.4.54%
Dimensional Fund Advisors LP4.41%
Vanguard Portfolio Management LLC3.67%
Vanguard Capital Management LLC3.54%
Two Sigma Investments, LP3.14%
FMR, LLC2.62%

Largest institutional holders — last updated 6/30/2026.

Forensic scorecard

Margin has compressed by about 15.7 points over the period — profitability is trending down.

Net margin trend1.8% → -13.9%

Margin has compressed by about 15.7 points over the period — profitability is trending down.

Return on equity-11.8%

Latest ROE of -11.8% is on the low side — the business earns a modest return on shareholder capital.

Computed by MarketChacha from reported figures (SEC XBRL). Education, not a rating or recommendation.

What's expected next

Next quarter

Rev $171.7M · EPS -0.16

Est. earnings growth 0.0%

Next fiscal year

Rev $777.4M · EPS 0.32

Est. earnings growth +157.0%

Analyst consensus estimates — not the company's own guidance.

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P/E ROE ROCE Margins Market cap

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Financials at a glance

Source: SEC XBRL

Annual

Quarterly · last 8

Revenue (FY2025)

$696.2M

Net margin

-13.9%

ROE

-11.8%

Revenue CAGR (2y)

+0.3%

EPS (FY2025)

-3.30

Net profit (FY2025)

$-97.0M

Ask MarketChacha about AOSL

Get a cited, plain-English answer — the “why”, not just data. Finance research only, never buy/sell advice.

Why it moved

Sep 2, 2026
No company-specific news, filings, or earnings-related catalyst on Sept 2; AOSL rose with the broader semiconductor sector/market.
· confidence: low
Sep 1, 2026
AOSL fell 4.14% on September 1 with no new company-specific news, filings, or earnings-related catalyst; it moved in line with the broader semiconductor sector or market.
· confidence: low
Aug 4, 2026
AOSL rose with broader semiconductor sector momentum; no company-specific catalyst or filing was reported for August 4.
· confidence: low
Jul 28, 2026
AOSL fell 6.39% with no company-specific catalyst identified in recent filings or credible news coverage; the move appears consistent with broader semiconductor sector or market trading.
· confidence: low
Jul 27, 2026
No specific company catalyst or filing explains the sharp drop; AOSL fell alongside broader semiconductor sector weakness and recent profit-taking after AI-related gains, with a Wall Street Zen Sell rating downgrade noted around the same period.
source 1 ↗source 2 ↗· confidence: low
Jul 24, 2026
AOSL fell alongside a broad semiconductor sector selloff on the first trading day of Q3, with chip stocks dropping roughly 6.3%.
source 1 ↗· confidence: medium

Daily moves with the verified reason behind them. Education only — not investment advice.

Financials

Yearly

Period	Revenue	Net profit	EPS	Net margin	ROE
FY2025	$696.2M	$-97.0M	-3.30	-13.9%	-11.8%
FY2024	$657.3M	$-11.1M	-0.39	-1.7%	-1.2%
FY2023	$691.3M	$12.4M	0.42	1.8%	1.4%

Quarterly

Period	Revenue	Net profit	EPS	Net margin
2026Q1	$163.8M	$-13.8M	-0.46	-8.4%
2025Q4	$162.3M	$-13.3M	-0.45	-8.2%
2025Q3	$182.5M	$-2.1M	-0.07	-1.2%
2025Q1	$164.6M	$-10.8M	-0.37	-6.6%
2024Q4	$173.2M	$-6.6M	-0.23	-3.8%
2024Q3	$181.9M	$-2.5M	-0.09	-1.4%
2024Q1	$150.1M	$-11.2M	-0.39	-7.5%
2023Q4	$165.3M	$-2.9M	-0.10	-1.8%
2023Q3	$180.6M	$5.8M	0.19	3.2%
2023Q1	$132.6M	$-18.9M	-0.68	-14.3%

Figures as reported, in reporting currency. Source: SEC XBRL.

Filings & announcements

2026

8-K — Executive/director change, Exhibits
SEC7/10/2026material
8-K — Completion of acquisition/disposition, Exhibits
SEC5/12/2026material
8-K — Results of operations, Exhibits
SEC5/6/2026material
10-Q filing
SEC5/6/2026
8-K — Executive/director change
SEC4/17/2026material
8-K — Executive/director change
SEC3/9/2026material
8-K — Results of operations, Exhibits
SEC2/5/2026material
10-Q — 10-Q Q2'26
SEC2/5/2026

2025

8-K — Shareholder vote results
SEC11/17/2025material
10-Q filing
SEC11/6/2025
8-K — Results of operations, Exhibits
SEC11/5/2025material
10-K filing
SEC8/28/2025
8-K — Results of operations, Exhibits
SEC8/6/2025material

In the news

Education and discussion only — not investment advice. Financials from official filings (SEC/BSE) and reported company statements; market figures (delayed market data) are delayed and shown for reference only. Verify with the linked sources before acting.