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Monolithic Power Systems
MPWR

860 hedge funds and large institutions have $27.1B invested in Monolithic Power Systems in 2025 Q1 according to their latest regulatory filings, with 121 funds opening new positions, 332 increasing their positions, 309 reducing their positions, and 110 closing their positions.

New
Increased
Maintained
Reduced
Closed

10% more first-time investments, than exits

New positions opened: 121 | Existing positions closed: 110

2.11% more ownership

Funds ownership: 95.41% → 97.52% (+2.1%)

7% more repeat investments, than reductions

Existing positions increased: 332 | Existing positions reduced: 309

0% less funds holding

Funds holding: 862 → 860 (-2)

2% less capital invested

Capital invested by funds: $27.6B → $27.1B (-$493M)

9% less call options, than puts

Call options by funds: $253M | Put options by funds: $277M

57% less funds holding in top 10

Funds holding in top 10: 7 → 3 (-4)

Holders
860
Holders Change
-2
Holders Change %
-0.23%
% of All Funds
11.53%
Holding in Top 10
3
Holding in Top 10 Change
-4
Holding in Top 10 Change %
-57.14%
% of All Funds
0.04%
New
121
Increased
332
Reduced
309
Closed
110
Calls
$253M
Puts
$277M
Net Calls
-$24.4M
Net Calls Change
+$261M

Top Buyers

1
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
+$319M
2
Fidelity Investments
Fidelity Investments
Massachusetts
+$240M
3
VanEck Associates
VanEck Associates
New York
+$170M
4
Coatue Management
Coatue Management
New York
+$122M
5
WorldQuant Millennium Advisors
WorldQuant Millennium Advisors
New York
+$96.2M

Top Sellers

1
BlackRock
BlackRock
New York
-$321M
2
Norges Bank
Norges Bank
Norway
-$151M
3
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
-$89.1M
4
Bank of Nova Scotia
Bank of Nova Scotia
Ontario, Canada
-$85.4M
5
VNIM
Vaughan Nelson Investment Management
Texas
-$82.3M
Name Holding Trade Value Shares
Change 		Change in
Stake
AIM
876
Aigen Investment Management
New York
– -$1.92M -3,237 Closed
FHB
877
First Hawaiian Bank
Hawaii
– -$1.77M -2,990 Closed
WP
878
Woodline Partners
California
– -$1.58M -2,667 Closed
SPA
879
Sherbrooke Park Advisers
New York
– -$1.53M -2,587 Closed
OC
880
Optimas Capital
Hong Kong
– -$1.48M -2,500 Closed
ACMH
881
Andar Capital Management (HK)
Hong Kong
– -$1.42M -2,400 Closed
PL
882
Polianta Ltd
Jersey
– -$1.3M -2,200 Closed
SMTF
883
Sphera Management Technology Funds
Israel
– -$1.18M -2,000 Closed
BAM
884
Blueshift Asset Management
New Jersey
– -$780K -1,318 Closed
VEA
885
Virtus ETF Advisers
New York
– -$765K -1,293 Closed
CCM
886
Connective Capital Management
California
– -$730K -1,234 Closed
N
887
Numerai
California
– -$728K -1,231 Closed
Two Sigma Advisers
888
Two Sigma Advisers
New York
– -$710K -1,200 Closed
BFG
889
Bleakley Financial Group
New Jersey
– -$631K -1,067 Closed
GCM
890
Greenland Capital Management
New York
– -$631K -1,001 Closed
UWS
891
Unique Wealth Strategies
Illinois
– -$589K -996 Closed
GIA
892
Gateway Investment Advisers
Ohio
– -$588K -993 Closed
SIA
893
Sovereign Investment Advisors
Arizona
– -$587K -992 Closed
LCM
894
LRT Capital Management
Texas
– -$581K -982 Closed
Capstone Investment Advisors
895
Capstone Investment Advisors
New York
– -$580K -980 Closed
MCC
896
Malaga Cove Capital
California
– -$555K -938 Closed
NRD
897
Nebula Research & Development
New York
– -$548K -926 Closed
CPC
898
CFC Planning Company
Indiana
– -$511K -864 Closed
MP
899
Munro Partners
Australia
– -$435K -735 Closed
CPCPP
900
Canada Post Corporation Pension Plan
Canada
– -$420K -710 Closed
34 35
36
37 38

MPWR Hedge Fund Activity: Q1 2025 in Review

860 of the 7,457 institutional investors tracked by Wall St. Rank reported a position in Monolithic Power Systems (MPWR) for Q1 2025, worth a combined $27.1B — down 1.8% from $27.6B a quarter earlier.

Buyers outnumbered sellers: 121 funds opened new MPWR positions and 110 closed out — a net gain of 11 holders — while 332 added to existing stakes and 309 trimmed.

The largest buyer was T. Rowe Price Associates, adding an estimated $319M. The largest seller was BlackRock, cutting an estimated $321M.

  • 860 institutional investors held Monolithic Power Systems (MPWR) as of Q1 2025, down from 862 in Q4 2024.
  • Funds reported $27.1B of Monolithic Power Systems stock for Q1 2025, down 1.8% quarter-over-quarter.
  • 121 funds opened new Monolithic Power Systems positions in Q1 2025 and 110 closed out, a net change of +11 holders.
  • The largest Monolithic Power Systems buyer in Q1 2025 was T. Rowe Price Associates, an estimated $319M added.
  • The largest Monolithic Power Systems seller in Q1 2025 was BlackRock, an estimated $321M sold.

Based on aggregated 13F filings for Q1 2025.