AOSL Institutional Ownership & Shareholders
ALPHA & OMEGA SEMICONDUCTOR (AOSL) is currently held by 197 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $1.06B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of AOSL tracked by InsiderSet, reporting ownership valued at approximately $201.46M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $90.45M, representing an estimated loss of -55.10% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 65% of the total disclosed AOSL value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., State Street Corp, Manufacturers Life Insurance Company, The, and several other long-term asset managers with concentrated positions in ALPHA & OMEGA SEMICONDUCTOR (AOSL).
This page ranks the largest institutional AOSL shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
197
Total Reported Value
$1.06B
Largest Holder
Blackrock, Inc.
Largest Position
$201.46M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
79
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 4,256,528 | $201,461,470 | $90,451,220 | -$111,010,250 | -55.10% | |
| State Street Corp | 0.00% | 2,347,448 | $111,104,714 | $49,883,270 | -$61,221,444 | -55.10% | |
| Manufacturers Life Insurance Company, The | 0.05% | 1,375,083 | $65,082,678 | $29,220,514 | -$35,862,164 | -55.10% | |
| Dimensional Fund Advisors Lp | 0.01% | 1,335,089 | $63,184,828 | $28,370,641 | -$34,814,187 | -55.10% | |
| Vanguard Portfolio Management Llc | 0.00% | 1,111,480 | $52,606,348 | $23,618,950 | -$28,987,398 | -55.10% | |
| Vanguard Capital Management Llc | 0.00% | 1,070,895 | $50,685,460 | $22,756,519 | -$27,928,941 | -55.10% | |
| Two Sigma Investments, Lp | 0.03% | 951,576 | $45,038,092 | $20,220,990 | -$24,817,102 | -55.10% | |
| Fmr Llc | 0.00% | 791,715 | $37,471,887 | $16,823,944 | -$20,647,943 | -55.10% | |
| Geode Capital Management, Llc | 0.00% | 658,902 | $31,192,224 | $14,001,668 | -$17,190,557 | -55.11% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.06% | 636,893 | $30,144,146 | $13,533,976 | -$16,610,170 | -55.10% | |
| Wellington Management Group Llp | 0.00% | 412,910 | $19,543,030 | $8,774,338 | -$10,768,693 | -55.10% | |
| Charles Schwab Investment Management Inc | 0.00% | 403,197 | $19,083,314 | $8,567,936 | -$10,515,378 | -55.10% | |
| Acadian Asset Management Llc | 0.02% | 323,866 | $15,311,000 | $6,882,153 | -$8,428,848 | -55.05% | |
| Weber Capital Management Llc | 13.46% | 536,737 | $14,760,268 | $11,405,661 | -$3,354,607 | -22.73% | |
| Royce & Associates Lp | 0.12% | 309,015 | $14,625,680 | $6,566,569 | -$8,059,111 | -55.10% | |
| D. E. Shaw & Co., Inc. | 0.01% | 284,225 | $13,452,369 | $6,039,781 | -$7,412,588 | -55.10% | |
| Goldman Sachs Group Inc | 0.00% | 279,113 | $13,210,433 | $5,931,151 | -$7,279,282 | -55.10% | |
| Millennium Management Llc | 0.01% | 267,648 | $12,667,780 | $5,687,520 | -$6,980,260 | -55.10% | |
| Northern Trust Corp | 0.00% | 261,018 | $12,353,983 | $5,546,633 | -$6,807,351 | -55.10% | |
| Jane Street Group, Llc | 0.01% | 234,335 | $11,091,075 | $4,979,619 | -$6,111,456 | -55.10% | |
| Morgan Stanley | 0.00% | 217,176 | $10,278,964 | $4,614,990 | -$5,663,974 | -55.10% | |
| Invesco Ltd. | 0.00% | 207,842 | $9,837,163 | $4,416,643 | -$5,420,521 | -55.10% | |
| Apis Capital Advisors, Llc | 0.95% | 206,280 | $9,763,232 | $4,383,450 | -$5,379,782 | -55.10% | |
| Panagora Asset Management Inc | 0.03% | 194,356 | $9,198,869 | $4,130,065 | -$5,068,804 | -55.10% | |
| Vanguard Fiduciary Trust Co | 0.00% | 163,428 | $7,735,047 | $3,472,845 | -$4,262,202 | -55.10% | |
| Jacobs Levy Equity Management, Inc | 0.03% | 160,918 | $7,616,249 | $3,419,508 | -$4,196,742 | -55.10% | |
| T. Rowe Price Investment Management, Inc. | 0.00% | 153,998 | $7,289,000 | $3,272,458 | -$4,016,543 | -55.10% | |
| Bridgeway Capital Management, Llc | 0.12% | 149,537 | $7,077,586 | $3,177,661 | -$3,899,925 | -55.10% | |
| Bank Of America Corp | 0.00% | 145,243 | $6,874,351 | $3,086,414 | -$3,787,937 | -55.10% | |
| Tudor Investment Corp Et Al | 0.03% | 144,312 | $6,830,287 | $3,066,630 | -$3,763,657 | -55.10% | |
| Congress Asset Management Co | 0.04% | 246,735 | $6,785,213 | $5,243,119 | -$1,542,094 | -22.73% | |
| Bank Of New York Mellon Corp | 0.00% | 141,445 | $6,694,576 | $3,005,706 | -$3,688,870 | -55.10% | |
| Ubs Group Ag | 0.00% | 135,116 | $6,395,040 | $2,871,215 | -$3,523,825 | -55.10% | |
| Empowered Funds, Llc | 0.03% | 129,537 | $6,130,986 | $2,752,661 | -$3,378,325 | -55.10% | |
| Trexquant Investment Lp | 0.03% | 117,474 | $5,560,044 | $2,496,323 | -$3,063,722 | -55.10% | |
| Jpmorgan Chase & Co | 0.00% | 109,566 | $4,953,479 | $2,328,278 | -$2,625,202 | -53.00% | |
| Imc-Chicago, Llc | 0.04% | 99,791 | $4,723,108 | $2,120,559 | -$2,602,549 | -55.10% | |
| Susquehanna International Group, Llp | 0.00% | 96,522 | $4,568,386 | $2,051,093 | -$2,517,294 | -55.10% | |
| Public Sector Pension Investment Board | 0.01% | 85,371 | $4,040,609 | $1,814,134 | -$2,226,475 | -55.10% | |
| Aqr Capital Management Llc | 0.00% | 83,433 | $3,948,884 | $1,772,951 | -$2,175,933 | -55.10% | |
| Wedge Capital Management L L P/Nc | 0.07% | 139,461 | $3,835,178 | $2,963,546 | -$871,632 | -22.73% | |
| Bnp Paribas Financial Markets | 0.00% | 76,044 | $3,599,163 | $1,615,935 | -$1,983,228 | -55.10% | |
| Principal Financial Group Inc | 0.00% | 118,522 | $3,259,356 | $2,518,593 | -$740,764 | -22.73% | |
| Rhumbline Advisers | 0.00% | 61,676 | $2,919,107 | $1,310,615 | -$1,608,492 | -55.10% | |
| American Century Companies Inc | 0.00% | 61,255 | $2,899,199 | $1,301,669 | -$1,597,530 | -55.10% | |
| Citigroup Inc | 0.00% | 61,099 | $2,891,815 | $1,298,354 | -$1,593,461 | -55.10% | |
| Nuveen, Llc | 0.00% | 55,668 | $2,634,767 | $1,182,945 | -$1,451,822 | -55.10% | |
| Russell Investments Group, Ltd. | 0.00% | 55,849 | $2,598,647 | $1,186,791 | -$1,411,856 | -54.33% | |
| Algert Global Llc | 0.03% | 54,200 | $2,565,286 | $1,151,750 | -$1,413,536 | -55.10% | |
| Legal & General Group Plc | 0.00% | 54,126 | $2,561,783 | $1,150,178 | -$1,411,606 | -55.10% |
Frequently asked questions about AOSL
Who are the largest institutional holders of AOSL?
The largest institutional holders of AOSL reported in the latest SEC Form 13F filings include Blackrock, Inc., State Street Corp, Manufacturers Life Insurance Company, The, Dimensional Fund Advisors Lp, and Vanguard Portfolio Management Llc. InsiderSet ranks institutional holders by their latest reported AOSL position.
What is AOSL institutional ownership?
This page tracks AOSL positions reported by institutional investment managers through SEC Form 13F. ALPHA & OMEGA SEMICONDUCTOR (AOSL) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own AOSL?
InsiderSet currently tracks 197 institutional managers reporting AOSL holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of AOSL shareholders.
How much AOSL stock do institutions own?
Institutional investment managers disclosed approximately $1.06B in AOSL holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was AOSL institutional ownership last updated?
The latest AOSL institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional AOSL holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its AOSL position after the reporting date.
Are institutions buying or selling AOSL?
Institutional buying and selling can be analyzed by comparing AOSL positions across consecutive 13F reporting periods. InsiderSet's AOSL Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View AOSL ownership changes.
How has AOSL institutional ownership changed over time?
InsiderSet tracks AOSL institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.