Alpha and Omega Semiconductor Ltd (AOSL)
Who owns Alpha and Omega Semiconductor Ltd (AOSL)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 82.1% of the shares are freely tradable; institutional investors hold 75.1%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| BlackRock Inc | 13.05 | 3,904,776 | -0.1 | 03/31/2026 |
| Manufacturers Life Insurance Co | 5.26 | 1,574,462 | -3.3 | 03/31/2026 |
| Dimensional Fund Advisors, Inc. | 5.23 | 1,563,871 | -1.3 | 03/31/2026 |
| State Street Corp | 4.68 | 1,401,550 | -4.9 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 3.91 | 1,168,929 | +0.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 3.51 | 1,051,231 | +0.0 | 03/31/2026 |
| Wellington Management Company LLP | 2.32 | 694,808 | -32.3 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Small-Cap ETF | 5.06 | 1,514,116 | +0.0 | 07/30/2026 |
| State Street® SPDR® S&P® Smcndctr ETF | 4.58 | 1,370,150 | +0.0 | 07/30/2026 |
| Vanguard Morn Total Stk Mkt Idx Investor | 2.54 | 759,077 | +1.3 | 06/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 20. Jul 2026 | Chien Joshua C. | Director | Other | 1,368 | 0.00 | – |
| 16. Jul 2026 | Xue Bing | EVP-WW Sales & Bus Development | Sell | 875 | 33.99 | 29,741 |
| 13. Jul 2026 | Chang Mike F | Director | Other | 23,754 | 0.00 | – |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character.
View all insider transactions →Data as of: August 3, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.