Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

ALPHA & OMEGA SEMICONDUCTOR Ltd

CIK 0001387467AOSL· quarter ending 2026-06-30
Shares outstanding
30,259,255
Held by 13F filers
22,849,057
75.5% of shares outstanding
Holders
216
+36 vs 2026-03-31 · 64 new, 28 exited
Value
$1.1B
shares +3.2% vs prior quarter

Share classes (cover page of the 10-K filed 2026-08-27, as of 2026-07-31)

ClassListedShares outstandingHeld by 13F filers% of classHoldersCUSIP
Common stockAOSL · NASDAQ30,259,25522,849,05775.5%216G6331P104

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine
CountCUSIPClass (as filers write it)HoldersShares heldClass shares% of classValueOptionsMapped via
G6331P104SHS21622,849,05730,259,25575.5%$1.1B7 call / 5 put13DGholders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings.

Top holders (216 of 216 · G6331P104)

change vs 2026-03-31
#FilerShares% of classValueChange
1BlackRock, Inc.4,256,52814.07%$201.5M+351,752 (+9.0%)
2STATE STREET CORP2,347,4487.76%$111.1M+945,898 (+67.5%)
3MANUFACTURERS LIFE INSURANCE COMPANY, THE1,375,0834.54%$65.1M-199,379 (-12.7%)
4DIMENSIONAL FUND ADVISORS LP1,335,0894.41%$63.2M-228,782 (-14.6%)
5VANGUARD PORTFOLIO MANAGEMENT LLC1,111,4803.67%$52.6M-57,449 (-4.9%)
6VANGUARD CAPITAL MANAGEMENT LLC1,070,8953.54%$50.7M+19,664 (+1.9%)
7TWO SIGMA INVESTMENTS, LP951,5763.14%$45.0M+398,565 (+72.1%)
8FMR LLC791,7152.62%$37.5M+247,006 (+45.3%)
9GEODE CAPITAL MANAGEMENT, LLC658,9022.18%$31.2M+30,234 (+4.8%)
10Connor, Clark & Lunn Investment Management Ltd.636,8932.10%$30.1M+300,177 (+89.1%)
11WEBER CAPITAL MANAGEMENT LLC /ADV538,4371.78%$25.5M-3,871 (-0.7%)
12WELLINGTON MANAGEMENT GROUP LLP412,9101.36%$19.5M-281,898 (-40.6%)
13CHARLES SCHWAB INVESTMENT MANAGEMENT INC403,1971.33%$19.1M-17,230 (-4.1%)
14ACADIAN ASSET MANAGEMENT LLC323,8661.07%$15.3M+113,226 (+53.8%)
15ROYCE & ASSOCIATES LP309,0151.02%$14.6M-209,100 (-40.4%)
16D. E. Shaw & Co., Inc.284,2250.94%$13.5M+4,637 (+1.7%)
17GOLDMAN SACHS GROUP INC279,1130.92%$13.2M+11,431 (+4.3%)
18MILLENNIUM MANAGEMENT LLC267,6480.88%$12.7M+69,866 (+35.3%)
19NORTHERN TRUST CORP261,0180.86%$12.4M+14,228 (+5.8%)
20JANE STREET GROUP, LLC234,3350.77%$11.1MNEW
21MORGAN STANLEY217,1760.72%$10.3M+20,281 (+10.3%)
22Invesco Ltd.207,8420.69%$9.8M-167,931 (-44.7%)
23Apis Capital Advisors, LLC206,2800.68%$9.8MNEW
24CONGRESS ASSET MANAGEMENT CO203,4600.67%$9.6MNEW
25PANAGORA ASSET MANAGEMENT INC194,3560.64%$9.2M+135,571 (+230.6%)
26VANGUARD FIDUCIARY TRUST CO163,4280.54%$7.7M+485 (+0.3%)
27JACOBS LEVY EQUITY MANAGEMENT, INC160,9180.53%$7.6M-192,996 (-54.5%)
28T. Rowe Price Investment Management, Inc.153,9980.51%$7.3MNEW
29BRIDGEWAY CAPITAL MANAGEMENT, LLC149,5370.49%$7.1M+9,206 (+6.6%)
30BANK OF AMERICA CORP /DE/145,2430.48%$6.9M+17,551 (+13.7%)
31TUDOR INVESTMENT CORP ET AL144,3120.48%$6.8M+74,762 (+107.5%)
32Bank of New York Mellon Corp141,4450.47%$6.7M+1,911 (+1.4%)
33UBS Group AG135,1160.45%$6.4M-53,624 (-28.4%)
34Empowered Funds, LLC129,5370.43%$6.1M+9,206 (+7.7%)
35PRINCIPAL FINANCIAL GROUP INC120,0560.40%$5.7M-19 (-0.0%)
36Trexquant Investment LP117,4740.39%$5.6M-56,626 (-32.5%)
37JPMORGAN CHASE & CO109,5660.36%$5.0M-234,466 (-68.2%)
38IMC-Chicago, LLC99,7910.33%$4.7MNEW
39SUSQUEHANNA INTERNATIONAL GROUP, LLP96,5220.32%$4.6M+54,787 (+131.3%)
40WEDGE CAPITAL MANAGEMENT L L P/NC91,4400.30%$4.3M-21,114 (-18.8%)
41Public Sector Pension Investment Board85,3710.28%$4.0M-3,016 (-3.4%)
42AQR CAPITAL MANAGEMENT LLC83,4330.28%$3.9M-58,224 (-41.1%)
43BNP PARIBAS FINANCIAL MARKETS76,0440.25%$3.6M-29,222 (-27.8%)
44RHUMBLINE ADVISERS61,6760.20%$2.9M-10,369 (-14.4%)
45AMERICAN CENTURY COMPANIES INC61,2550.20%$2.9M+2,930 (+5.0%)
46CITIGROUP INC61,0990.20%$2.9M+54,330 (+802.6%)
47Russell Investments Group, Ltd.55,8490.18%$2.6M+21,769 (+63.9%)
48Nuveen, LLC55,6680.18%$2.6M+7,251 (+15.0%)
49ALGERT GLOBAL LLC54,2000.18%$2.6M-66,140 (-55.0%)
50Legal & General Group Plc54,1260.18%$2.6M-2,680 (-4.7%)
51DEUTSCHE BANK AG\52,8530.17%$2.5M+3,311 (+6.7%)
52Swiss National Bank49,3000.16%$2.3M-1,100 (-2.2%)
53AMERIPRISE FINANCIAL INC47,0290.16%$2.2M-6,903 (-12.8%)
54FRANKLIN RESOURCES INC40,5230.13%$1.9M-15,811 (-28.1%)
55CITADEL ADVISORS LLC39,3680.13%$1.9M+2,934 (+8.1%)
56PRICE T ROWE ASSOCIATES INC /MD/39,1040.13%$1.9M+6,281 (+19.1%)
57XTX Topco Ltd37,5620.12%$1.8M+14,628 (+63.8%)
58Quantinno Capital Management LP36,4400.12%$1.7M-808 (-2.2%)
59WINTON GROUP Ltd34,8890.12%$1.7M-26,043 (-42.7%)
60ALLIANCEBERNSTEIN L.P.33,6980.11%$747K+13,198 (+64.4%)
61Numerai GP LLC32,9410.11%$1.6M-65,033 (-66.4%)
62Mork Capital Management, LLC30,0000.10%$1.4M-15,000 (-33.3%)
63HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND29,0050.10%$1.4MNEW
64CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM27,8200.09%$1.3M+4,036 (+17.0%)
65MASSACHUSETTS FINANCIAL SERVICES CO /MA/26,6380.09%$1.3M-1,062 (-3.8%)
66New Age Alpha Advisors, LLC24,9860.08%$1.2MNEW
67Counterpoint Mutual Funds LLC24,7120.08%$1.2M-14,867 (-37.6%)
68RAYMOND JAMES FINANCIAL INC23,3170.08%$1.1M-498 (-2.1%)
69Y-Intercept (Hong Kong) Ltd22,2180.07%$1.1M-13,152 (-37.2%)
70Marex Group Ltd21,5000.07%$1.0MNEW
71Dynamic Technology Lab Private Ltd21,4400.07%$1.0MNEW
72WELLS FARGO & COMPANY/MN21,4140.07%$1.0M+11,342 (+112.6%)
73Creative Planning21,1070.07%$999K+5,183 (+32.5%)
74NATIXIS20,0000.07%$947K—
75Jump Financial, LLC19,8000.07%$937K-21,700 (-52.3%)
76NEUBERGER BERMAN GROUP LLC19,0630.06%$902K+79 (+0.4%)
77Walleye Trading LLC18,9790.06%$898KNEW
78GSA CAPITAL PARTNERS LLP16,9250.06%$801K-38,345 (-69.4%)
79Brevan Howard Capital Management LP16,4830.05%$780K-2,688 (-14.0%)
80Thrivent Financial for Lutherans16,3130.05%$772K-175 (-1.1%)
81VANGUARD ASSET MANAGEMENT, Ltd15,5230.05%$735K—
82Illinois Municipal Retirement Fund15,3580.05%$727K+2,975 (+24.0%)
83Arosa Capital Management LP15,0000.05%$710K-15,000 (-50.0%)
84Capelight Capital Asset Management LP15,0000.05%$710KNEW
85MetLife Investment Management, LLC14,4600.05%$684K+143 (+1.0%)
86Jupiter Topco LLC13,4850.04%$638KNEW
87Zurcher Kantonalbank (Zurich Cantonalbank)13,2320.04%$626K+4,787 (+56.7%)
88DIVERSIFIED TRUST CO12,9120.04%$611KNEW
89Engineers Gate Manager LP12,2500.04%$580K-50,784 (-80.6%)
90MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.11,3910.04%$539K-533 (-4.5%)
91Vanguard Global Advisers, LLC11,2090.04%$531K-9,814 (-46.7%)
92Louisiana State Employees Retirement System10,9000.04%$516K-100 (-0.9%)
93NATIXIS ADVISORS, LLC10,2750.03%$486KNEW
94NEW YORK STATE COMMON RETIREMENT FUND10,0960.03%$478K+2,300 (+29.5%)
95State of Alaska, Department of Revenue9,4500.03%$447K-3,990 (-29.7%)
96SEI INVESTMENTS CO8,9640.03%$424K-74,870 (-89.3%)
97JONES FINANCIAL COMPANIES LLLP8,7500.03%$385K+1,264 (+16.9%)
98Jain Global LLC8,6580.03%$410KNEW
99Overbrook Management Corp8,3040.03%$393KNEW
100State of New Jersey Common Pension Fund D7,9390.03%$376KNEW
101Almanack Investment Partners, LLC.7,8460.03%$371KNEW
102State of Tennessee, Department of Treasury7,8210.03%$370K+2,745 (+54.1%)
103LPL Financial LLC7,8050.03%$369KNEW
104AXQ CAPITAL, LP7,5460.02%$357KNEW
105Caprock Group, LLC7,2770.02%$344K-5,058 (-41.0%)
106STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM7,2660.02%$344KNEW
107HSBC HOLDINGS PLC6,8810.02%$323KNEW
108Police & Firemen's Retirement System of New Jersey6,8270.02%$323K—
109ARIZONA STATE RETIREMENT SYSTEM6,7750.02%$321KNEW
110AMALGAMATED BANK6,6830.02%$316KNEW
111Caitong International Asset Management Co., Ltd6,6770.02%$316KNEW
112ROYAL BANK OF CANADA6,5540.02%$310K-1,383 (-17.4%)
113YOUSIF CAPITAL MANAGEMENT, LLC6,5260.02%$309KNEW
114Vanguard Investments Australia, Ltd.6,3510.02%$301K—
115TEACHERS RETIREMENT SYSTEM OF THE STATE OF KENTUCKY6,0480.02%$286K—
116MARSHALL WACE, LLP6,0000.02%$284K-14,400 (-70.6%)
117COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS5,8910.02%$279KNEW
118Entropy Technologies, LP5,8320.02%$276KNEW
119INTECH INVESTMENT MANAGEMENT LLC5,8090.02%$275KNEW
120OREGON PUBLIC EMPLOYEES RETIREMENT FUND5,6450.02%$267K—
121NEW YORK STATE TEACHERS RETIREMENT SYSTEM5,6280.02%$266K+934 (+19.9%)
122Ausdal Financial Partners, Inc.5,6180.02%$266KNEW
123CANADA PENSION PLAN INVESTMENT BOARD5,6000.02%$265K-4,600 (-45.1%)
124KLP KAPITALFORVALTNING AS5,5000.02%$260K—
125Larson Financial Group LLC5,4580.02%$258K+5,340 (+4525.4%)
126SIMPLEX TRADING, LLC5,4520.02%$258K+432 (+8.6%)
127Apollon Wealth Management, LLC5,4050.02%$256KNEW
128Cornerstone Investment Partners, LLC5,1070.02%$242KNEW
129Sepio Capital, LP5,0000.02%$237KNEW
130Pekin Hardy Strauss, Inc.4,9500.02%$234KNEW
131VOYA INVESTMENT MANAGEMENT LLC4,7440.02%$225KNEW
132EASTERN BANK4,6760.02%$221K—
133Massar Capital Management, LP4,6210.02%$219KNEW
134Summit Global Investments4,4620.01%$211K-6,776 (-60.3%)
135PRUDENTIAL FINANCIAL INC4,4550.01%$211KNEW
136Pictet Asset Management Holding SA4,4410.01%$210KNEW
137SG Americas Securities, LLC4,3780.01%$207K-68,080 (-94.0%)
138PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO4,1570.01%$197K-5,471 (-56.8%)
139BARCLAYS PLC3,8880.01%$184K-4,706 (-54.8%)
140GLOBEFLEX CAPITAL L P3,8450.01%$182KNEW
141GAMMA Investing LLC3,5540.01%$168K+87 (+2.5%)
142Bayforest Capital Ltd2,6250.01%$124KNEW
143Quantbot Technologies LP2,2500.01%$106K-14,962 (-86.9%)
144NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO2,2050.01%$104K—
145Ameritas Investment Partners, Inc.2,0900.01%$99K-215 (-9.3%)
146UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC1,9050.01%$90K-38,128 (-95.2%)
147State of Wyoming1,4930.00%$71KNEW
148Versant Capital Management, Inc1,3390.00%$63K-76 (-5.4%)
149PNC Financial Services Group, Inc.1,3380.00%$63K-38 (-2.8%)
150Tower Research Capital LLC (TRC)1,2690.00%$60K-1,046 (-45.2%)
151SUMMIT SECURITIES GROUP LLC9940.00%$47KNEW
152HANTZ FINANCIAL SERVICES, INC.9150.00%$43K+392 (+75.0%)
153Arax Advisory Partners9130.00%$43K+761 (+500.7%)
154Silver Grove Financial Group, Inc.8460.00%$40KNEW
155US BANCORP \DE\7880.00%$37K—
156NISA INVESTMENT ADVISORS, LLC7430.00%$35K-335 (-31.1%)
157Walleye Capital LLC6830.00%$32KNEW
158FEDERATED HERMES, INC.6570.00%$31K-979 (-59.8%)
159OSAIC HOLDINGS, INC.5640.00%$27K+132 (+30.6%)
160SBI Securities Co., Ltd.5450.00%$26K+320 (+142.2%)
161Allworth Financial LP5420.00%$26K+129 (+31.2%)
162Wilmington Savings Fund Society, FSB5000.00%$24K—
163Sterling Capital Management LLC4990.00%$24K-358 (-41.8%)
164Global Retirement Partners, LLC3280.00%$16KNEW
165BNP PARIBAS ASSET MANAGEMENT Holding S.A.3200.00%$15K-175 (-35.4%)
166FIRST HORIZON CORP3020.00%$14KNEW
167Smartleaf Asset Management LLC3010.00%$14K—
168Geneos Wealth Management Inc.3000.00%$14KNEW
169Rockefeller Capital Management L.P.2900.00%$14K+280 (+2800.0%)
170City State Bank2000.00%$9K—
171FIFTH THIRD BANCORP1560.00%$7K-34 (-17.9%)
172Pinnacle Wealth Planning Services, Inc.1530.00%$7K+13 (+9.3%)
173BARROW HANLEY MEWHINNEY & STRAUSS LLC1520.00%$7K-23 (-13.1%)
174BESSEMER GROUP INC1500.00%$7K—
175LOS ANGELES CAPITAL MANAGEMENT LLC1480.00%$7K—
176SIGNATUREFD, LLC1130.00%$5K+18 (+18.9%)
177Salomon & Ludwin, LLC1060.00%$5K—
178Parkside Financial Bank & Trust1050.00%$5K+4 (+4.0%)
179Golden State Wealth Management, LLC1000.00%$5KNEW
180ROTHSCHILD INVESTMENT LLC860.00%$4K+14 (+19.4%)
181Parallel Advisors, LLC810.00%$4K—
182Physician Wealth Advisors, Inc.760.00%$4K+25 (+49.0%)
183Mascoma Wealth Management LLC670.00%$3KNEW
184Quarry LP650.00%$3KNEW
185Farther Finance Advisors, LLC580.00%$3K+15 (+34.9%)
186EverSource Wealth Advisors, LLC570.00%$3K+19 (+50.0%)
187Blue Trust, Inc.570.00%$3K—
188Rialto Wealth Management, LLC510.00%$2KNEW
189Bare Financial Services, Inc430.00%$2KNEW
190Basecamp Wealth Advisors LLC330.00%$2K+7 (+26.9%)
191UMB Bank, n.a.320.00%$2K-76 (-70.4%)
192Avion Wealth320.00%$1KNEW
193True Wealth Design, LLC280.00%$1K—
194Ameritas Advisory Services, LLC220.00%$1KNEW
195Keating Financial Advisory Services, Inc.190.00%$899—
196Advisors Asset Management, Inc.190.00%$899-20 (-51.3%)
197FARMERS & MERCHANTS INVESTMENTS INC160.00%$757—
198IFP Advisors, Inc160.00%$757—
199RAFFA WEALTH MANAGEMENT, LLC160.00%$757NEW
200MassMutual Private Wealth & Trust, FSB140.00%$663—
201Plante Moran Financial Advisors, LLC140.00%$663NEW
202Covestor Ltd90.00%$0+7 (+350.0%)
203Stone House Investment Management, LLC80.00%$379NEW
204Fortitude Family Office, LLC80.00%$379NEW
205HHM Wealth Advisors, LLC60.00%$284—
206Essential Partners LLC60.00%$284+2 (+50.0%)
207Kilter Group LLC40.00%$190-14 (-77.8%)
208JFS WEALTH ADVISORS, LLC30.00%$142NEW
209Abound Wealth Management20.00%$95NEW
210SJS Investment Consulting Inc.20.00%$95+1 (+100.0%)
211LANARK FINANCIAL, INC.20.00%$230NEW
212JPL Wealth Management, LLC10.00%$48NEW
213Hughes Financial Services, LLC10.00%$47NEW
214HUNTINGTON NATIONAL BANK10.00%$47—
215GILPIN WEALTH MANAGEMENT, LLC10.00%$48—
216Davis Capital Management10.00%$47NEW
Exited since 2026-03-31 (28 filers; largest 25 shown)
GAGNON SECURITIES LLC−167,874
PEREGRINE CAPITAL MANAGEMENT LLC−161,821
Uniplan Investment Counsel, Inc.−150,154
Point72 Asset Management, L.P.−129,287
Gagnon Advisors, LLC−120,196
STATE OF WISCONSIN INVESTMENT BOARD−78,503
Susquehanna Portfolio Strategies, LLC−66,647
First Eagle Investment Management, LLC−40,000
PDT Partners, LLC−25,375
DRW Securities, LLC−20,176
HighTower Advisors, LLC−19,506
JOURNEY STRATEGIC WEALTH LLC−17,790
FIRST CITIZENS BANK & TRUST CO−15,830
Verition Fund Management LLC−15,789
Envestnet Portfolio Solutions, Inc.−15,205
JANUS HENDERSON GROUP PLC−13,485
Redwood Wealth Management Group, LLC−11,337
PRELUDE CAPITAL MANAGEMENT, LLC−9,030
CWM, LLC−1,726
Aster Capital Management (DIFC) Ltd−815
Optiver Holding B.V.−546
Advisory Services Network, LLC−205
MAI Capital Management−124
QUADRANT CAPITAL GROUP LLC−54
Root Financial Partners, LLC−48

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting personFormFiledEventShares% of class
Mike F. ChangSCHEDULE 13G/A2026-08-102026-06-304,212,20113.9%
SSGA FUNDS MANAGEMENT, INC.SCHEDULE 13G2026-08-072026-06-301,766,8105.9%
STATE STREET CORPORATIONSCHEDULE 13G2026-08-072026-06-302,347,4487.8%
Dimensional Fund Advisors LPSCHEDULE 13G/A2026-07-142026-06-301,335,0894.5%
The Vanguard GroupSCHEDULE 13G/A2026-03-262026-03-1300%
Hood River Capital Management LLCSCHEDULE 13G/A2025-08-142025-06-3000%
BlackRock, Inc.SCHEDULE 13G/A2025-04-302025-03-313,735,17212.7%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.