$AOSL

$21.97 +$0.06 (0.27%) Close

$AOSL Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 30.3M shares outstanding

Who owns AOSL?

By type of holder

Institutions 75.2% Insiders 15.7% Everyone else 9.1%

Concentration Top 10 holders own 59.2%

Chang Mike F 14.1% · BlackRock, Inc. 14.1%

Institutional ownership

75.2%

+2.0 pts vs last qtr

Institutional holders

215

+35 vs last qtr

Net shares bought

+611.5K

by institutions in Q2 2026

New / sold out

64 / 29

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

State Street Corp +945.9K
Two Sigma Investments, LP +398.6K

Biggest sellers in Q2 2026

Wellington Management Group LLP −281.9K
Jpmorgan Chase & Co −234.5K

Who is planning to sell?

Notices of proposed sale, last 12 months

$2.68M

14 notices from 4 people

Shares covered

81.5K

0.27% of the company

Arranged in advance

100%

of the value is under a 10b5-1 plan

Under a 10b5-1 plan No plan

Largest proposed sellers

Yifan Liang Officer 10b5-1 $1.11M
Bing Xue Officer 10b5-1 $716K

Every notice on Red Flags →

A Form 144 is notice of a planned sale, not the sale itself. What insiders actually sold is on Insider Transactions.

Is your stake being diluted?

Diluted share count, FY2017–FY2026

+20.6%

+2.11% a year

Each share's claim on the business

−17.1%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

$48.2M vs $204M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years71% 3–5 years6% 1–3 years9% Under 1 year13%

Quarterly turnover

17.5%

of institutional shares changed hands

Top 10 managers, median time held

5 years

Super Investors

Investment managers reporting AOSL on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
B BlackRock, Inc.	4.3M	14.07%	+351.8K (+9.0%)	≤2021	0.0%
Shares held by quarter Peak holding4.3M (Q2'26) Change over 8 quarters+460.6K Share of the company14.070% BlackRock, Inc.'s full portfolio →
SS State Street Corp	2.3M	7.76%	+945.9K (+67.5%)	≤2021	0.0%
Shares held by quarter Peak holding2.3M (Q2'26) Change over 8 quarters+1.0M Share of the company7.760% State Street Corp's full portfolio →

BlackRock, Inc.

4.3M

% of company

14.07%

Change vs last qtr

+351.8K (+9.0%)

Held since

≤2021

State Street Corp

2.3M

% of company

7.76%

Change vs last qtr

+945.9K (+67.5%)

Held since

≤2021

28 more super investors behind a free account

See every manager holding Alpha and Omega Semiconductor Limited, how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting AOSL on Form N-PORT; together they hold 12.6% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VT Vanguard Total Stock Market Index Fund Vanguard Index Funds	$35.9M	759.1K	2.51%	0.00%	June 30, 2026
VI Vanguard Information Technology Index Fund Vanguard World Fund	$29.2M	643.1K	2.13%	0.02%	May 31, 2026

Vanguard Total Stock Market Index Fund

Vanguard Index Funds

Position value

$35.9M

% of company

2.51%

% of the fund

0.00%

As of

June 30, 2026

Vanguard Information Technology Index Fund

Vanguard World Fund

Position value

$29.2M

% of company

2.13%

% of the fund

0.02%

As of

May 31, 2026

23 more funds behind a free account

See every fund holding Alpha and Omega Semiconductor Limited and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
CM Chang Mike F Insider	4.3M	14.08%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company14.080% Chang Mike F's insider activity →
LY Liang Yifan Insider	269.4K	0.89%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.890% Liang Yifan's insider activity →

Chang Mike F

Insider

4.3M

% of company

14.08%

Change vs last qtr

—

Held since

—

Liang Yifan

Insider

269.4K

% of company

0.89%

Change vs last qtr

—

Held since

—

3 more holders behind a free account

See every insider and 5%+ holder of Alpha and Omega Semiconductor Limited.

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