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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
JFG
901
Jefferies Financial Group
New York
– -$415K -702 Closed
CCI
902
Credit Capital Investments
New Jersey
– -$414K -700 Closed
FC
903
FORA Capital
Florida
– -$404K -682 Closed
OTPPB
904
Ontario Teachers' Pension Plan Board
Ontario, Canada
– -$396K -670 Closed
CCIA
905
Campbell & Co Investment Adviser
Maryland
– -$395K -667 Closed
MA
906
Mutual Advisors
Nebraska
– -$387K -649 Closed
RA
907
RiverPark Advisors
New York
– -$271K -642 Closed
WPW
908
Waldron Private Wealth
Pennsylvania
– -$362K -612 Closed
PCM
909
Prelude Capital Management
New York
– -$349K -589 Closed
MSAM
910
Moloney Securities Asset Management
Missouri
– -$311K -526 Closed
FWM
911
FFT Wealth Management
Pennsylvania
– -$310K -524 Closed
CWM
912
Circle Wealth Management
New Jersey
– -$294K -497 Closed
NCFG
913
New Century Financial Group
New Jersey
– -$301K -485 Closed
RBFC
914
Roman Butler Fullerton & Co
Missouri
– -$273K -455 Closed
BMCM
915
Bryn Mawr Capital Management
Pennsylvania
– -$257K -434 Closed
AT
916
American Trust
Kentucky
– -$255K -431 Closed
VCP
917
Verus Capital Partners
Arizona
– -$249K -420 Closed
AA
918
Armis Advisers
Georgia
– -$240K -406 Closed
FC
919
Farringdon Capital
United Kingdom
– -$240K -405 Closed
BOTPPF
920
Board of the Pension Protection Fund
United Kingdom
– -$237K -400 Closed
GIM
921
Granahan Investment Management
Massachusetts
– -$237K -400 Closed
GIA
922
Gladstone Institutional Advisory
Florida
– -$235K -397 Closed
BC
923
Bayforest Capital
United Kingdom
– -$230K -389 Closed
DS
924
DRW Securities
Illinois
– -$226K -382 Closed
DADC
925
D.A. Davidson & Co
Montana
– -$221K -373 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.