Company · Ownership research

ALPHA & OMEGA SEMICONDUCTOR Ltd AOSL

CIK 0001387467 · CUSIP G6331P104

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP G6331P104 (AOSL), not CUSIP G6331P904 (AOSL), CUSIP G6331P954 (AOSL), CUSIP G96629126 (AOSL), CUSIP SB5Q3KZ25 (AOSL), and does not merge CUSIPs.

This page lists the top 20 of 167 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	BlackRock Inc. CIK 1364742 · View history	$139.32M 3,728,001 shares	0.00%	-29.50K(-0.80%)Reduced	SEC filing ↗ Aug 13, 2024	▾
02	VANGUARD GROUP INC CIK 102909 · View history	$81.11M 2,170,514 shares	0.00%	+45.16K(+2.10%)Added	SEC filing ↗ Aug 13, 2024	▾
03	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$76.27M 2,040,941 shares	0.02%	-62.70K(-3.00%)Reduced	SEC filing ↗ Aug 9, 2024	▾
04	MANUFACTURERS LIFE INSURANCE COMPANY, THE CIK 928047 · View history	$48.01M 1,284,650 shares	0.04%	+169.62K(+15.20%)Added	SEC filing ↗ Aug 14, 2024	▾
05	STATE STREET CORP CIK 93751 · View history	$37.62M 1,006,633 shares	0.00%	-318.87K(-24.10%)Reduced	SEC filing ↗ Aug 14, 2024	▾
06	WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history	$30.29M 810,433 shares	0.01%	+87.93K(+12.20%)Added	SEC filing ↗ Aug 14, 2024	▾
07	FMR LLC CIK 315066 · Amended · View history	$21.97M 587,775 shares	0.00%	-80.92K(-12.10%)Reduced	SEC filing ↗ Aug 13, 2024	▾
08	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$20.46M 547,419 shares	0.00%	+33.74K(+6.60%)Added	SEC filing ↗ Aug 9, 2024	▾
09	First Eagle Investment Management, LLC CIK 1325447 · View history	$17.63M 471,642 shares	0.04%	+25.10K(+5.60%)Added	SEC filing ↗ Aug 12, 2024	▾
10	ROYCE & ASSOCIATES LP CIK 906304 · View history	$16.27M 435,274 shares	0.15%	+19.86K(+4.80%)Added	SEC filing ↗ Aug 13, 2024	▾
11	PEREGRINE CAPITAL MANAGEMENT LLC CIK 764529 · View history	$12.66M 338,683 shares	0.37%	+43.03K(+14.60%)Added	SEC filing ↗ Jul 29, 2024	▾
12	GAGNON SECURITIES LLC CIK 1125725 · View history	$11.65M 311,823 shares	2.62%	-18.68K(-5.70%)Reduced	SEC filing ↗ Aug 14, 2024	▾
13	NORTHERN TRUST CORP CIK 73124 · View history	$8.75M 234,094 shares	0.00%	-6.42K(-2.70%)Reduced	SEC filing ↗ Aug 14, 2024	▾
14	AMERICAN CENTURY COMPANIES INC CIK 748054 · View history	$8.66M 231,746 shares	0.01%	+435(+0.20%)Added	SEC filing ↗ Aug 7, 2024	▾
15	CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · Amended · View history	$8.39M 224,606 shares	0.00%	+2.52K(+1.10%)Added	SEC filing ↗ Aug 12, 2024	▾
16	Point72 Asset Management, L.P. CIK 1603466 · Amended · View history	$8.39M 224,484 shares	0.03%	+224.48KNew	SEC filing ↗ Sep 16, 2024	▾
17	Invesco Ltd. CIK 914208 · View history	$8.16M 218,482 shares	0.00%	-49.12K(-18.40%)Reduced	SEC filing ↗ Aug 13, 2024	▾
18	Uniplan Investment Counsel, Inc. CIK 1520710 · View history	$8.03M 214,901 shares	0.73%	-1.12K(-0.50%)Reduced	SEC filing ↗ Aug 14, 2024	▾
19	MORGAN STANLEY CIK 895421 · Amended · View history	$7.72M 206,599 shares	0.00%	+1.57K(+0.80%)Added	SEC filing ↗ May 14, 2025	▾
20	Gagnon Advisors, LLC CIK 1599466 · View history	$7.08M 189,357 shares	5.39%	0(0.00%)Unchanged	SEC filing ↗ Aug 14, 2024	▾

Showing 20 / 167 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

167

Cancelled or null records excluded

Disclosed shares

19,467,782

Not deduplicated across managers

Disclosed value

$727.51M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

ALPHA & OMEGA SEMICONDUCTOR Ltd · Q2 2024

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.