Monolithic Power Systems
MPWR
905 hedge funds and large institutions have $34.6B invested in Monolithic Power Systems in 2025 Q2 according to their latest regulatory filings, with 137 funds opening new positions, 376 increasing their positions, 301 reducing their positions, and 83 closing their positions.
100% more funds holding in top 10
Funds holding in top 10: 3 → 6 (+3)
65% more first-time investments, than exits
New positions opened: 137 | Existing positions closed: 83
28% more capital invested
Capital invested by funds: $27.1B → $34.6B (+$7.56B)
25% more repeat investments, than reductions
Existing positions increased: 376 | Existing positions reduced: 301
5% more funds holding
Funds holding: 860 → 905 (+45)
1.37% more ownership
Funds ownership: 97.52% → 98.89% (+1.4%)
30% less call options, than puts
Call options by funds: $238M | Put options by funds: $338M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
T. Rowe Price Investment Management
Baltimore,
Maryland
|
+$391M |
| 2 |
Fidelity International
Hamilton,
Bermuda
|
+$263M |
| 3 |
BlackRock
New York
|
+$202M |
| 4 |
JP Morgan Chase
New York
|
+$145M |
| 5 |
Goldman Sachs
New York
|
+$136M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Alyeska Investment Group
Chicago,
Illinois
|
-$167M |
| 2 |
Franklin Resources
San Mateo,
California
|
-$163M |
| 3 |
Coatue Management
New York
|
-$112M |
| 4 |
WorldQuant Millennium Advisors
New York
|
-$91.3M |
| 5 |
Holocene Advisors
New York
|
-$86.7M |
MPWR Hedge Fund Activity: Q2 2025 in Review
905 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in Monolithic Power Systems (MPWR) for Q2 2025, worth a combined $34.6B — up 28% from $27.1B a quarter earlier.
Buyers outnumbered sellers: 137 funds opened new MPWR positions and 83 closed out — a net gain of 54 holders — while 376 added to existing stakes and 301 trimmed.
The largest buyer was T. Rowe Price Investment Management, adding an estimated $391M. The largest seller was Alyeska Investment Group, exiting entirely with an estimated $167M sold.
- 905 institutional investors held Monolithic Power Systems (MPWR) as of Q2 2025, up from 860 in Q1 2025.
- Funds reported $34.6B of Monolithic Power Systems stock for Q2 2025, up 28% quarter-over-quarter.
- 137 funds opened new Monolithic Power Systems positions in Q2 2025 and 83 closed out, a net change of +54 holders.
- The largest Monolithic Power Systems buyer in Q2 2025 was T. Rowe Price Investment Management, an estimated $391M added.
- The largest Monolithic Power Systems seller in Q2 2025 was Alyeska Investment Group, an estimated $167M sold.
Based on aggregated 13F filings for Q2 2025.