Silicon Motion
SIMO
219 hedge funds and large institutions have $2.6B invested in Silicon Motion in 2025 Q3 according to their latest regulatory filings, with 39 funds opening new positions, 69 increasing their positions, 79 reducing their positions, and 31 closing their positions.
33% more funds holding in top 10
Funds holding in top 10: 9 → 12 (+3)
26% more first-time investments, than exits
New positions opened: 39 | Existing positions closed: 31
3% more funds holding
Funds holding: 212 → 219 (+7)
8% more call options, than puts
Call options by funds: $58.7M | Put options by funds: $54.4M
3.03% less ownership
Funds ownership: 83.62% → 80.59% (-3%)
13% less repeat investments, than reductions
Existing positions increased: 69 | Existing positions reduced: 79
28% less capital inflows, than outflows
Capital inflows: $205M | Capital outflows: $284M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
+$52M |
| 2 |
Driehaus Capital Management
Chicago,
Illinois
|
+$19.3M |
| 3 |
Hawk Ridge Capital Management
Los Angeles,
California
|
+$12.4M |
| 4 |
Ophir Asset Management
Sydney,
Australia
|
+$11.2M |
| 5 |
Robeco Institutional Asset Management
Rotterdam,
Netherlands
|
+$10.8M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Point72 Asset Management
Stamford,
Connecticut
|
-$28.9M |
| 2 |
Frontier Capital Management
Boston,
Massachusetts
|
-$18.9M |
| 3 |
Sora Investors
Bryn Mawr,
Pennsylvania
|
-$18.6M |
| 4 |
Boston Partners
Boston,
Massachusetts
|
-$15.6M |
| 5 |
Massachusetts Financial Services
Boston,
Massachusetts
|
-$12.4M |
SIMO Hedge Fund Activity: Q3 2025 in Review
219 of the 7,650 institutional investors tracked by Wall St. Rank reported a position in Silicon Motion (SIMO) for Q3 2025, worth a combined $2.6B — up 22% from $2.14B a quarter earlier.
Buyers outnumbered sellers: 39 funds opened new SIMO positions and 31 closed out — a net gain of 8 holders — while 69 added to existing stakes and 79 trimmed.
The largest buyer was Fidelity Investments, adding an estimated $52M. The largest seller was Point72 Asset Management, cutting an estimated $28.9M.
- 219 institutional investors held Silicon Motion (SIMO) as of Q3 2025, up from 212 in Q2 2025.
- Funds reported $2.6B of Silicon Motion stock for Q3 2025, up 22% quarter-over-quarter.
- 39 funds opened new Silicon Motion positions in Q3 2025 and 31 closed out, a net change of +8 holders.
- The largest Silicon Motion buyer in Q3 2025 was Fidelity Investments, an estimated $52M added.
- The largest Silicon Motion seller in Q3 2025 was Point72 Asset Management, an estimated $28.9M sold.
Based on aggregated 13F filings for Q3 2025.