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Alpha and Omega Semiconductor

164 hedge funds and large institutions have $557M invested in Alpha and Omega Semiconductor in 2025 Q2 according to their latest regulatory filings, with 31 funds opening new positions, 74 increasing their positions, 32 reducing their positions, and 22 closing their positions.

New
Increased
Maintained
Reduced
Closed

191% more call options, than puts

Call options by funds: $4.36M | Put options by funds: $1.5M

131% more repeat investments, than reductions

Existing positions increased: 74 | Existing positions reduced: 32

41% more first-time investments, than exits

New positions opened: 31 | Existing positions closed: 22

5% more funds holding

Funds holding: 156164 (+8)

1% less capital invested

Capital invested by funds: $563M → $557M (-$5.91M)

3.17% less ownership

Funds ownership: 76.98%73.81% (-3.2%)

Holders
164
Holders Change
+8
Holders Change %
+5.13%
% of All Funds
2.16%
Holding in Top 10
1
Holding in Top 10 Change
+1
Holding in Top 10 Change %
% of All Funds
0.01%
New
31
Increased
74
Reduced
32
Closed
22
Calls
$4.36M
Puts
$1.5M
Net Calls
+$2.86M
Net Calls Change
+$2M
Name Holding Trade Value Shares
Change
Change in
Stake
BlackRock
1
BlackRock
New York
$99M +$1.94M +89,160 +2%
Vanguard Group
2
Vanguard Group
Pennsylvania
$62.1M +$1.77M +81,410 +3%
Dimensional Fund Advisors
3
Dimensional Fund Advisors
Texas
$44.1M -$2.64M -121,434 -7%
Manulife (Manufacturers Life Insurance)
4
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$36.2M +$3.45M +158,869 +13%
State Street
5
State Street
Massachusetts
$32.8M -$1.65M -76,134 -6%
Boston Partners
6
Boston Partners
Massachusetts
$28.5M +$11.2M +514,240 +86%
RS
7
Robeco Schweiz
Switzerland
$20.1M +$16.3K +751 +0.1%
Wellington Management Group
8
Wellington Management Group
Massachusetts
$19.3M -$3.39M -156,155 -17%
Geode Capital Management
9
Geode Capital Management
Massachusetts
$15.4M +$60.5K +2,785 +0.5%
Fidelity Investments
10
Fidelity Investments
Massachusetts
$13.2M -$728K -33,514 -6%
Goldman Sachs
11
Goldman Sachs
New York
$12M +$7.58M +348,568 +290%
RA
12
Royce & Associates
New York
$11.1M +$1.86M +85,617 +25%
Millennium Management
13
Millennium Management
New York
$10.4M +$8.8M +405,059 New
First Eagle Investment Management
14
First Eagle Investment Management
New York
$8.45M +$489K +22,500 +7%
Invesco
15
Invesco
Georgia
$8.42M -$9.38M -431,339 -57%
Charles Schwab
16
Charles Schwab
California
$7.72M +$1.29M +59,292 +25%
Northern Trust
17
Northern Trust
Illinois
$6.42M -$42.9K -1,975 -0.8%
OAM
18
Oberweis Asset Management
Illinois
$6.27M +$1.45M +66,600 +37%
Morgan Stanley
19
Morgan Stanley
New York
$6.19M -$2.61M -119,985 -33%
PCM
20
Peregrine Capital Management
Minnesota
$5.72M +$1.04M +47,719 +27%
GS
21
Gagnon Securities
New York
$5.54M +$26.5K +1,219 +0.6%
Bank of America
22
Bank of America
North Carolina
$5.42M -$483K -22,205 -10%
Russell Investments Group
23
Russell Investments Group
United Kingdom
$5.37M +$753K +34,654 +20%
Two Sigma Investments
24
Two Sigma Investments
New York
$5.05M +$2.75M +126,715 +181%
UIC
25
Uniplan Investment Counsel
Wisconsin
$4.8M +$214K +9,866 +6%

AOSL Hedge Fund Activity: Q2 2025 in Review

164 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in Alpha and Omega Semiconductor (AOSL) for Q2 2025, worth a combined $557M — down 1% from $563M a quarter earlier.

Buyers outnumbered sellers: 31 funds opened new AOSL positions and 22 closed out — a net gain of 9 holders — while 74 added to existing stakes and 32 trimmed.

The largest buyer was Boston Partners, adding an estimated $11.2M. The largest seller was Hood River Capital Management, exiting entirely with an estimated $49.4M sold.

  • 164 institutional investors held Alpha and Omega Semiconductor (AOSL) as of Q2 2025, up from 156 in Q1 2025.
  • Funds reported $557M of Alpha and Omega Semiconductor stock for Q2 2025, down 1% quarter-over-quarter.
  • 31 funds opened new Alpha and Omega Semiconductor positions in Q2 2025 and 22 closed out, a net change of +9 holders.
  • The largest Alpha and Omega Semiconductor buyer in Q2 2025 was Boston Partners, an estimated $11.2M added.
  • The largest Alpha and Omega Semiconductor seller in Q2 2025 was Hood River Capital Management, an estimated $49.4M sold.

Based on aggregated 13F filings for Q2 2025.