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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
SW
926
SVB Wealth
Massachusetts
– -$215K -363 Closed
OR
927
Olympiad Research
Connecticut
– -$214K -361 Closed
BPA
928
Beacon Pointe Advisors
California
– -$213K -360 Closed
CAG
929
Csenge Advisory Group
Florida
– -$213K -360 Closed
TAM
930
Tucker Asset Management
Colorado
– -$211K -357 Closed
JCM
931
Jacobi Capital Management
Pennsylvania
– -$207K -349 Closed
TM
932
TigerOak Management
New Mexico
– -$204K -344 Closed
ANTB
933
AMG National Trust Bank
Colorado
– -$201K -340 Closed
IAN
934
Integrated Advisors Network
Texas
– -$201K -340 Closed
LWAM
935
Legacy Wealth Asset Management
Minnesota
– -$201K -340 Closed
LP
936
LGL Partners
Pennsylvania
– -$200K -338 Closed
QFMHK
937
Q Fund Management (Hong Kong)
– -$178K -300 Closed
FA
938
Fedenia Advisers
Wisconsin
– -$170K -288 Closed
CFGS
939
Concourse Financial Group Securities
Alabama
– -$184K -267 Closed
VWM
940
Venturi Wealth Management
Texas
– -$86.4K -146 Closed
Optiver Holding
941
Optiver Holding
Netherlands
– -$83.4K -141 Closed
OC
942
Oarsman Capital
Wisconsin
– -$33.1K -56 Closed
CJ
943
Caitlin John
Michigan
– -$27.8K -47 Closed
OIAM
944
OFI Invest Asset Management
France
– -$26.9K -47 Closed
LFA
945
LGT Financial Advisors
Texas
– -$24.3K -41 Closed
CPL
946
Capital & Planning LLC
Georgia
– -$23.7K -40 Closed
VHAM
947
Van Hulzen Asset Management
California
– -$18.7K -32 Closed
QL
948
Quarry LP
New York
– -$14.8K -25 Closed
MA
949
Modus Advisors
Minnesota
– -$13K -22 Closed
RCM
950
Raleigh Capital Management
North Carolina
– -$11.2K -19 Closed
35 36 37
38
39

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.