Monolithic Power Systems
MPWR
1,061 hedge funds and large institutions have $44.1B invested in Monolithic Power Systems in 2025 Q4 according to their latest regulatory filings, with 189 funds opening new positions, 382 increasing their positions, 354 reducing their positions, and 92 closing their positions.
105% more first-time investments, than exits
New positions opened: 189 | Existing positions closed: 92
8% more funds holding
Funds holding: 981 → 1,061 (+80)
3.94% more ownership
Funds ownership: 97.8% → 101.74% (+3.9%)
8% more repeat investments, than reductions
Existing positions increased: 382 | Existing positions reduced: 354
3% more capital invested
Capital invested by funds: $43B → $44.1B (+$1.15B)
10% less funds holding in top 10
Funds holding in top 10: 10 → 9 (-1)
49% less call options, than puts
Call options by funds: $274M | Put options by funds: $538M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Invesco
Atlanta,
Georgia
|
+$1.32B |
| 2 |
Fidelity Investments
Boston,
Massachusetts
|
+$397M |
| 3 |
SG Americas Securities
New York
|
+$252M |
| 4 |
First Trust Advisors
Wheaton,
Illinois
|
+$244M |
| 5 |
Barclays
London,
United Kingdom
|
+$234M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
JP Morgan Chase
New York
|
-$338M |
| 2 |
Citadel Advisors
Miami,
Florida
|
-$240M |
| 3 |
VanEck Associates
New York
|
-$221M |
| 4 |
Brown Advisory
Baltimore,
Maryland
|
-$221M |
| 5 |
RIM
Rakuten Investment Management
Tokyo,
Japan
|
-$193M |
MPWR Hedge Fund Activity: Q4 2025 in Review
1,061 of the 8,266 institutional investors tracked by Wall St. Rank reported a position in Monolithic Power Systems (MPWR) for Q4 2025, worth a combined $44.1B — up 2.7% from $43B a quarter earlier.
Buyers outnumbered sellers: 189 funds opened new MPWR positions and 92 closed out — a net gain of 97 holders — while 382 added to existing stakes and 354 trimmed.
The largest buyer was Invesco, adding an estimated $1.32B. The largest seller was JP Morgan Chase, cutting an estimated $338M.
- 1,061 institutional investors held Monolithic Power Systems (MPWR) as of Q4 2025, up from 981 in Q3 2025.
- Funds reported $44.1B of Monolithic Power Systems stock for Q4 2025, up 2.7% quarter-over-quarter.
- 189 funds opened new Monolithic Power Systems positions in Q4 2025 and 92 closed out, a net change of +97 holders.
- The largest Monolithic Power Systems buyer in Q4 2025 was Invesco, an estimated $1.32B added.
- The largest Monolithic Power Systems seller in Q4 2025 was JP Morgan Chase, an estimated $338M sold.
Based on aggregated 13F filings for Q4 2025.