Latest Period
Q2 2026
Security Snapshot
ALPHA & OMEGA SEMICONDUCTOR Ltd - Common Share (AOSL) Institutional Ownership
CUSIP: G6331P104
13F Institutional Holders and Ownership History from Q1 2014 to Q2 2026
Institutions Reporting
212
Shares (Excl. Options)
22,788,266
Price
$47.33
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- Security type / class
- Equity / Common Share
- Symbol
- AOSL on Nasdaq
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 22,788,266
- Total 13F value
- $1,078,240,280
- Portfolio coverage rank
- 0%
- Share change
- +739,972
- Value change
- +$61,884,983
- Number of holders
- 212
- Shares outstanding
- 30,303,604
- SEC-reported price per share
- $28.85
- Insider filing price
- $28.85
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- AOSL - ALPHA & OMEGA SEMICONDUCTOR Ltd - Common Share is tracked under CUSIP G6331P104.
- 212 institutions reported positions in Q2 2026.
- 4 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 179 to 212 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $490,135,186 to $1,078,240,280.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 212 institutions filings for Q2 2026.
Security key
G6331P104
Latest holder period
Q2 2026
13F holders
212
13D/G owners
4
CIK / CUSIP context first
Open Q2 2026 holders
AOSL full holder history
ALPHA & OMEGA SEMICONDUCTOR Ltd SEC filings
ALPHA & OMEGA SEMICONDUCTOR Ltd company facts
ALPHA & OMEGA SEMICONDUCTOR Ltd insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP G6331P104:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
4
Security
AOSL
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Chang Mike F | 14% | -1.4% | $161,074,566 | +$3,233,039 | 4,212,201 | +2% | Mike F. Chang | 30 Jun 2026 |
| BlackRock, Inc. | 13% | $71,341,785 | 3,735,172 | BlackRock, Inc. | 31 Mar 2025 | |||
| STATE STREET CORP | 7.8% | $89,766,412 | 2,347,448 | STATE STREET CORPORATION | 30 Jun 2026 | |||
| DIMENSIONAL FUND ADVISORS LP | 4.5% | -16% | $63,189,896 | -$10,828,275 | 1,335,089 | -15% | Dimensional Fund Advisors LP | 30 Jun 2026 |
As of 30 Jun 2026, 212 institutional investors reported holding 22,788,266 shares of ALPHA & OMEGA SEMICONDUCTOR Ltd - Common Share (AOSL). This represents 75% of the company’s total 30,303,604 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
62%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 14% | 4,256,528 | +9% | 0% | $201,461,470 |
| STATE STREET CORP | 7.7% | 2,347,448 | +67% | 0% | $111,104,714 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | 4.5% | 1,375,083 | -13% | 0.05% | $65,082,678 |
| DIMENSIONAL FUND ADVISORS LP | 4.4% | 1,335,089 | -15% | 0.01% | $63,184,828 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3.7% | 1,111,480 | -4.9% | 0% | $52,606,348 |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.5% | 1,070,895 | +1.9% | 0% | $50,685,460 |
| TWO SIGMA INVESTMENTS, LP | 3.1% | 951,576 | +72% | 0.03% | $45,038,092 |
| FMR LLC | 2.6% | 791,715 | +45% | 0% | $37,471,887 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.2% | 658,902 | +4.8% | 0% | $31,192,224 |
| Connor, Clark & Lunn Investment Management Ltd. | 2.1% | 636,893 | +89% | 0.06% | $30,144,146 |
| WEBER CAPITAL MANAGEMENT LLC /ADV | 1.8% | 538,437 | -0.71% | 22% | $25,484,223 |
| WELLINGTON MANAGEMENT GROUP LLP | 1.4% | 412,910 | -41% | 0% | $19,543,030 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.3% | 403,197 | -4.1% | 0% | $19,083,314 |
| ACADIAN ASSET MANAGEMENT LLC | 1.1% | 323,866 | +54% | 0.02% | $15,311,000 |
| ROYCE & ASSOCIATES LP | 1% | 309,015 | -40% | 0.12% | $14,625,680 |
| D. E. Shaw & Co., Inc. | 0.94% | 284,225 | +1.7% | 0.01% | $13,452,369 |
| GOLDMAN SACHS GROUP INC | 0.92% | 279,113 | +4.3% | 0% | $13,210,433 |
| MILLENNIUM MANAGEMENT LLC | 0.88% | 267,648 | +35% | 0.01% | $12,667,780 |
| NORTHERN TRUST CORP | 0.86% | 261,018 | +5.8% | 0% | $12,353,983 |
| JANE STREET GROUP, LLC | 0.77% | 234,335 | 0.01% | $11,091,075 | |
| MORGAN STANLEY | 0.72% | 217,176 | +10% | 0% | $10,278,964 |
| Invesco Ltd. | 0.69% | 207,842 | -45% | 0% | $9,837,163 |
| Apis Capital Advisors, LLC | 0.68% | 206,280 | 0.95% | $9,763,232 | |
| CONGRESS ASSET MANAGEMENT CO | 0.67% | 203,460 | 0.06% | $9,629,762 | |
| PANAGORA ASSET MANAGEMENT INC | 0.64% | 194,356 | +231% | 0.03% | $9,198,869 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
50
Latest
Q2 2026
Rows shown
1-25 of 50
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 22,788,266 | $1,078,240,280 | +$61,884,983 | $47.33 | 212 |
| 2026 Q1 | 22,141,071 | $490,135,186 | -$5,832,235 | $22.16 | 179 |
| 2025 Q4 | 22,419,306 | $444,237,539 | -$20,760,977 | $19.81 | 167 |
| 2025 Q3 | 22,139,159 | $618,972,934 | +$12,322,001 | $27.96 | 183 |
| 2025 Q2 | 21,713,945 | $557,181,406 | -$21,502,941 | $25.66 | 162 |
| 2025 Q1 | 22,643,486 | $562,839,969 | +$19,669,271 | $24.86 | 154 |
| 2024 Q4 | 20,527,876 | $760,129,440 | +$35,310,006 | $37.03 | 175 |
| 2024 Q3 | 19,547,024 | $725,692,788 | +$457,886 | $37.12 | 170 |
| 2024 Q2 | 19,484,925 | $728,150,135 | +$25,089,031 | $37.37 | 167 |
| 2024 Q1 | 19,132,588 | $421,680,236 | +$22,060,570 | $22.04 | 139 |
| 2023 Q4 | 18,128,150 | $472,537,779 | +$16,052,328 | $26.06 | 142 |
| 2023 Q3 | 17,457,863 | $520,908,409 | +$2,752,038 | $29.84 | 139 |
| 2023 Q2 | 17,411,579 | $570,926,195 | -$3,947,987 | $32.80 | 144 |
| 2023 Q1 | 17,512,856 | $471,906,972 | -$7,678,298 | $26.95 | 142 |
| 2022 Q4 | 17,779,705 | $508,010,087 | -$19,400,324 | $28.57 | 160 |
| 2022 Q3 | 18,449,500 | $567,553,851 | +$8,894,879 | $30.76 | 163 |
| 2022 Q2 | 18,088,046 | $603,143,415 | +$62,506,955 | $33.34 | 175 |
| 2022 Q1 | 15,658,066 | $855,735,351 | +$30,606,390 | $54.65 | 199 |
| 2021 Q4 | 14,999,468 | $905,418,613 | +$7,097,497 | $60.56 | 175 |
| 2021 Q3 | 14,915,454 | $467,434,662 | -$8,201,150 | $31.37 | 128 |
| 2021 Q2 | 15,181,862 | $461,385,113 | -$11,593,861 | $30.39 | 124 |
| 2021 Q1 | 15,501,369 | $506,892,464 | +$7,830,300 | $32.70 | 125 |
| 2020 Q4 | 15,279,384 | $361,212,567 | +$7,128,506 | $23.64 | 98 |
| 2020 Q3 | 15,007,889 | $192,563,771 | -$5,796,971 | $12.82 | 79 |
| 2020 Q2 | 15,462,010 | $168,210,106 | +$2,964,497 | $10.88 | 72 |