Who owns ALPHA & OMEGA SEMICONDUCTOR Ltd?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of AOSL from SEC Form 13F filings across 216 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 216 institutions disclosed 22.8M shares of ALPHA & OMEGA SEMICONDUCTOR Ltd worth $1.08B — about 76.3% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
216
13F holders
$1.08B
value, 2026 filers
76.3%
of shares outstanding (22.8M sh)
65
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of AOSL's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 4.3M | $201.5M | 0.0% | 14.2% | +9.0% |
| 2 | STATE STREET CORP | 2.3M | $111.1M | 0.0% | 7.8% | +67.5% |
| 3 | MANUFACTURERS LIFE INSURANCE COMPANY, THE | 1.4M | $65.1M | 0.1% | 4.6% | -12.7% |
| 4 | DIMENSIONAL FUND ADVISORS LP | 1.3M | $63.2M | 0.0% | 4.5% | -14.6% |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.1M | $52.6M | 0.0% | 3.7% | -4.9% |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | 1.1M | $50.7M | 0.0% | 3.6% | +1.9% |
| 7 | TWO SIGMA INVESTMENTS, LP | 951,576 | $45.0M | 0.0% | 3.2% | +72.1% |
| 8 | FMR LLC | 791,715 | $37.5M | 0.0% | 2.6% | +45.3% |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | 658,902 | $31.2M | 0.0% | 2.2% | +4.8% |
| 10 | Connor, Clark & Lunn Investment Management Ltd. | 636,893 | $30.1M | 0.1% | 2.1% | +89.1% |
| 11 | WEBER CAPITAL MANAGEMENT LLC /ADV | 538,437 | $25.5M | 21.7% | 1.8% | -0.7% |
| 12 | WELLINGTON MANAGEMENT GROUP LLP | 412,910 | $19.5M | 0.0% | 1.4% | -40.6% |
| 13 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 403,197 | $19.1M | 0.0% | 1.3% | -4.1% |
| 14 | ACADIAN ASSET MANAGEMENT LLC | 323,866 | $15.3M | 0.0% | 1.1% | +53.8% |
| 15 | ROYCE & ASSOCIATES LP | 309,015 | $14.6M | 0.1% | 1% | -40.4% |
| 16 | D. E. Shaw & Co., Inc. | 284,225 | $13.5M | 0.0% | 0.9% | +1.7% |
| 17 | GOLDMAN SACHS GROUP INC | 279,113 | $13.2M | 0.0% | 0.9% | +4.3% |
| 18 | MILLENNIUM MANAGEMENT LLC | 267,648 | $12.7M | 0.0% | 0.9% | +35.3% |
| 19 | NORTHERN TRUST CORP | 261,018 | $12.4M | 0.0% | 0.9% | +5.8% |
| 20 | JANE STREET GROUP, LLCNEW | 234,335 | $11.1M | 0.0% | 0.8% | new |
| 21 | MORGAN STANLEY | 217,176 | $10.3M | 0.0% | 0.7% | +10.3% |
| 22 | Invesco Ltd. | 207,842 | $9.8M | 0.0% | 0.7% | -44.7% |
| 23 | Apis Capital Advisors, LLCNEW | 206,280 | $9.8M | 1.0% | 0.7% | new |
| 24 | CONGRESS ASSET MANAGEMENT CONEW | 203,460 | $9.6M | 0.1% | 0.7% | new |
| 25 | PANAGORA ASSET MANAGEMENT INC | 194,356 | $9.2M | 0.0% | 0.6% | +230.6% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.