Alpha and Omega Semiconductor
AOSL
168 hedge funds and large institutions have $444M invested in Alpha and Omega Semiconductor in 2025 Q4 according to their latest regulatory filings, with 27 funds opening new positions, 61 increasing their positions, 57 reducing their positions, and 44 closing their positions.
7% more repeat investments, than reductions
Existing positions increased: 61 | Existing positions reduced: 57
0.89% more ownership
Funds ownership: 73.69% → 74.58% (+0.89%)
0% more funds holding in top 10
Funds holding in top 10: 1 → 1 (0)
9% less funds holding
Funds holding: 185 → 168 (-17)
28% less capital invested
Capital invested by funds: $619M → $444M (-$175M)
39% less first-time investments, than exits
New positions opened: 27 | Existing positions closed: 44
66% less call options, than puts
Call options by funds: $822K | Put options by funds: $2.42M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
State Street
Boston,
Massachusetts
|
+$6.19M |
| 2 |
Wellington Management Group
Boston,
Massachusetts
|
+$3.8M |
| 3 |
D.E. Shaw & Co
New York
|
+$3.79M |
| 4 |
UBS Group
Zurich,
Switzerland
|
+$3.55M |
| 5 |
TI
Trexquant Investment
Stamford,
Connecticut
|
+$3.16M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
RS
Robeco Schweiz
Zurich,
Switzerland
|
-$22M |
| 2 |
Millennium Management
New York
|
-$13.6M |
| 3 |
First Eagle Investment Management
New York
|
-$9.13M |
| 4 |
OAM
Oberweis Asset Management
Lisle,
Illinois
|
-$7.58M |
| 5 |
AI
Acuitas Investments
Seattle,
Washington
|
-$6.74M |
AOSL Hedge Fund Activity: Q4 2025 in Review
168 of the 8,266 institutional investors tracked by Wall St. Rank reported a position in Alpha and Omega Semiconductor (AOSL) for Q4 2025, worth a combined $444M — down 28% from $619M a quarter earlier.
Sellers outnumbered buyers: 44 funds closed out of AOSL and 27 opened new positions — a net loss of 17 holders — while 57 trimmed existing stakes and 61 added.
The largest buyer was State Street, adding an estimated $6.19M. The largest seller was Robeco Schweiz, exiting entirely with an estimated $22M sold.
- 168 institutional investors held Alpha and Omega Semiconductor (AOSL) as of Q4 2025, down from 185 in Q3 2025.
- Funds reported $444M of Alpha and Omega Semiconductor stock for Q4 2025, down 28% quarter-over-quarter.
- 27 funds opened new Alpha and Omega Semiconductor positions in Q4 2025 and 44 closed out, a net change of -17 holders.
- The largest Alpha and Omega Semiconductor buyer in Q4 2025 was State Street, an estimated $6.19M added.
- The largest Alpha and Omega Semiconductor seller in Q4 2025 was Robeco Schweiz, an estimated $22M sold.
Based on aggregated 13F filings for Q4 2025.