ALPHA & OMEGA SEMICONDUCTOR Ltd (AOSL) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

29,424,786Shares Outstanding

300,921Shares held by institutions

$6,833,916Value of institutional holdings

75.24%Institutional ownership %

11.36%Shares Changed QoQ

159No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Recent 13F filings as of December 2025 show that 159 institutional investors hold a position in ALPHA & OMEGA SEMICONDUCTOR Ltd (NASDAQ:AOSL).

Institutional ownership in Alpha & Omega Semiconductor edged up to 75.2% in December 2025, compared to 73.1% in September 2025.
Quarterly data indicates a 11.36% shift in institutional share volume, and the annual owner count reflects a decrease of 10.17%.
Of these 159 institutional investors, 83 increased their holdings in Alpha & Omega Semiconductor, while 54 of them reduced positions, and 22 investors maintained their exposure.
The aggregate institutional position in Alpha & Omega Semiconductor now stands at 22.14Mn shares as of December 2025, after investors increased their holdings (up by 2.26Mn shares quarter on quarter which is up 1.54Mn shares year over year).
BlackRock, Inc.'s holding of 3.91Mn shares as of December 31, 2025 makes it the primary institutional investor in Alpha & Omega Semiconductor, owning 13.28% of the stock.
Among the most significant buyers of Alpha & Omega Semiconductor during December 2025 were WEBER CAPITAL MANAGEMENT LLC /ADV (547.31K), STATE STREET CORP (262.12K), WELLINGTON MANAGEMENT GROUP LLP (160.99K), D. E. Shaw & Co., Inc. (160.59K), Uniplan Investment Counsel, Inc. (152.25K).
Leading sellers of Alpha & Omega Semiconductor stock in December 2025 included MILLENNIUM MANAGEMENT LLC (577.89K), DIMENSIONAL FUND ADVISORS LP (103.64K), Boston Partners (97.49K), SG Americas Securities, LLC (48.73K), PEREGRINE CAPITAL MANAGEMENT LLC (44.65K).
The top 10 institutional holders of Alpha & Omega Semiconductor for the quarter ending December 2025 included BlackRock, Inc. (3.91Mn), VANGUARD GROUP INC (2.42Mn), MANUFACTURERS LIFE INSURANCE COMPANY, THE (1.63Mn), DIMENSIONAL FUND ADVISORS LP (1.58Mn), STATE STREET CORP (1.47Mn), WELLINGTON MANAGEMENT GROUP LLP (1.03Mn), Boston Partners (689.14K), GEODE CAPITAL MANAGEMENT, LLC (611.09K), WEBER CAPITAL MANAGEMENT LLC /ADV (547.31K), FMR LLC (515.10K).

159 Institutional Holders

300,921 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	3,908,891	63,596	1.65%	$77,435,131.00
VANGUARD GROUP INC	31 Dec, 2025	2,424,320	-29,655	-1.21%	$48,025,779.00
MANUFACTURERS LIFE INSURANCE COMPANY, THE	31 Dec, 2025	1,628,634	73,631	4.74%	$32,263,240.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	1,584,028	-103,638	-6.14%	$31,379,693.00
STATE STREET CORP	31 Dec, 2025	1,474,175	262,117	21.63%	$29,203,407.00
WELLINGTON MANAGEMENT GROUP LLP	31 Dec, 2025	1,025,953	160,988	18.61%	$20,324,129.00
Boston Partners	31 Dec, 2025	689,143	-97,487	-12.39%	$13,654,506.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	611,089	3,612	0.59%	$12,107,977.00
WEBER CAPITAL MANAGEMENT LLC /ADV	31 Dec, 2025	547,308	547,308	0.00%	$10,842,171.00
FMR LLC	31 Dec, 2025	515,095	51	0.01%	$10,204,023.00
ROYCE & ASSOCIATES LP	31 Dec, 2025	474,015	46,662	10.92%	$9,390,237.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	447,020	76,670	20.70%	$8,855,466.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	393,773	49,172	14.27%	$7,800,643.00
Uniplan Investment Counsel, Inc.	31 Dec, 2025	312,767	152,252	94.85%	$6,195,932.00
TWO SIGMA INVESTMENTS, LP	31 Dec, 2025	278,117	115,797	71.34%	$5,509,498.00
JPMORGAN CHASE & CO	31 Dec, 2025	237,563	78,719	49.56%	$4,706,124.00
NORTHERN TRUST CORP	31 Dec, 2025	235,866	-16,013	-6.36%	$4,672,506.00
MORGAN STANLEY	31 Dec, 2025	228,233	-34,583	-13.16%	$4,521,316.00
BANK OF AMERICA CORP /DE/	31 Dec, 2025	221,299	42,002	23.43%	$4,383,933.00
UBS Group AG	31 Dec, 2025	217,121	150,254	224.71%	$4,301,166.00

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