Monolithic Power Systems
MPWR
1,114 hedge funds and large institutions have $51.6B invested in Monolithic Power Systems in 2026 Q1 according to their latest regulatory filings, with 177 funds opening new positions, 383 increasing their positions, 404 reducing their positions, and 102 closing their positions.
74% more first-time investments, than exits
New positions opened: 177 | Existing positions closed: 102
44% more funds holding in top 10
Funds holding in top 10: 9 → 13 (+4)
17% more capital invested
Capital invested by funds: $44.2B → $51.6B (+$7.36B)
5% more funds holding
Funds holding: 1,059 → 1,114 (+55)
5% less repeat investments, than reductions
Existing positions increased: 383 | Existing positions reduced: 404
9.8% less ownership
Funds ownership: 106.01% → 96.22% (-9.8%)
29% less call options, than puts
Call options by funds: $299M | Put options by funds: $418M
Top Buyers
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
+$463M |
| 2 |
Royal Bank of Canada
Toronto,
Ontario, Canada
|
+$324M |
| 3 |
Lord, Abbett & Co
Jersey City,
New Jersey
|
+$122M |
| 4 |
BlackRock
New York
|
+$120M |
| 5 |
UBS Group
Zurich,
Switzerland
|
+$111M |
Top Sellers
MPWR Hedge Fund Activity: Q1 2026 in Review
1,114 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in Monolithic Power Systems (MPWR) for Q1 2026, worth a combined $51.6B — up 17% from $44.2B a quarter earlier.
Buyers outnumbered sellers: 177 funds opened new MPWR positions and 102 closed out — a net gain of 75 holders — while 383 added to existing stakes and 404 trimmed.
The largest buyer was Fidelity Investments, adding an estimated $463M. The largest seller was Corient Private Wealth, cutting an estimated $2.28B.
- 1,114 institutional investors held Monolithic Power Systems (MPWR) as of Q1 2026, up from 1,059 in Q4 2025.
- Funds reported $51.6B of Monolithic Power Systems stock for Q1 2026, up 17% quarter-over-quarter.
- 177 funds opened new Monolithic Power Systems positions in Q1 2026 and 102 closed out, a net change of +75 holders.
- The largest Monolithic Power Systems buyer in Q1 2026 was Fidelity Investments, an estimated $463M added.
- The largest Monolithic Power Systems seller in Q1 2026 was Corient Private Wealth, an estimated $2.28B sold.
Based on aggregated 13F filings for Q1 2026.