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Monolithic Power Systems
MPWR

905 hedge funds and large institutions have $34.6B invested in Monolithic Power Systems in 2025 Q2 according to their latest regulatory filings, with 137 funds opening new positions, 376 increasing their positions, 301 reducing their positions, and 83 closing their positions.

New
Increased
Maintained
Reduced
Closed

100% more funds holding in top 10

Funds holding in top 10: 3 → 6 (+3)

65% more first-time investments, than exits

New positions opened: 137 | Existing positions closed: 83

28% more capital invested

Capital invested by funds: $27.1B → $34.6B (+$7.56B)

25% more repeat investments, than reductions

Existing positions increased: 376 | Existing positions reduced: 301

5% more funds holding

Funds holding: 860 → 905 (+45)

1.37% more ownership

Funds ownership: 97.52% → 98.89% (+1.4%)

30% less call options, than puts

Call options by funds: $238M | Put options by funds: $338M

Holders
905
Holders Change
+45
Holders Change %
+5.23%
% of All Funds
11.92%
Holding in Top 10
6
Holding in Top 10 Change
+3
Holding in Top 10 Change %
+100%
% of All Funds
0.08%
New
137
Increased
376
Reduced
301
Closed
83
Calls
$238M
Puts
$338M
Net Calls
-$100M
Net Calls Change
-$75.6M

Top Buyers

Rank Fund Capital Flow
1
T. Rowe Price Investment Management
T. Rowe Price Investment Management
Maryland
+$391M
2
Fidelity International
Fidelity International
Bermuda
+$263M
3
BlackRock
BlackRock
New York
+$202M
4
JP Morgan Chase
JP Morgan Chase
New York
+$145M
5
Goldman Sachs
Goldman Sachs
New York
+$136M

Top Sellers

Rank Fund Capital Flow
1
Alyeska Investment Group
Alyeska Investment Group
Illinois
-$167M
2
Franklin Resources
Franklin Resources
California
-$163M
3
Coatue Management
Coatue Management
New York
-$112M
4
WorldQuant Millennium Advisors
WorldQuant Millennium Advisors
New York
-$91.3M
5
Holocene Advisors
Holocene Advisors
New York
-$86.7M
Name Holding Trade Value Shares
Change 		Change in
Stake
UCB
976
United Community Bank
South Carolina
– -$5.8K -10 Closed
CVM
977
Cheviot Value Management
California
– -$5.02K -8 Closed
WT
978
Washington Trust
Rhode Island
– -$4.69K -8 Closed
SIM
979
Synergy Investment Management
Florida
– -$3.48K -6 Closed
AA
980
Addison Advisors
Vermont
– -$1.74K -3 Closed
CWC
981
Carolinas Wealth Consulting
North Carolina
– -$1.74K -3 Closed
HCP
982
Hexagon Capital Partners
Arkansas
– -$1.74K -3 Closed
KFI
983
Key Financial Inc
Pennsylvania
– -$1.16K -2 Closed
PWAM
984
Private Wealth Asset Management
Iowa
– -$1.16K -2 Closed
ACA
985
American Capital Advisory
Idaho
– -$580 -1 Closed
CAM
986
Chesapeake Asset Management
New York
– -$579 -1 Closed
MAS
987
MPWM Advisory Solutions
Georgia
– -$580 -1 Closed
WA
988
WestEnd Advisors
North Carolina
– -$580 -1 Closed
WPA
989
West Paces Advisors
Georgia
– -$580 -1 Closed
36 37 38 39
40

MPWR Hedge Fund Activity: Q2 2025 in Review

905 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in Monolithic Power Systems (MPWR) for Q2 2025, worth a combined $34.6B — up 28% from $27.1B a quarter earlier.

Buyers outnumbered sellers: 137 funds opened new MPWR positions and 83 closed out — a net gain of 54 holders — while 376 added to existing stakes and 301 trimmed.

The largest buyer was T. Rowe Price Investment Management, adding an estimated $391M. The largest seller was Alyeska Investment Group, exiting entirely with an estimated $167M sold.

  • 905 institutional investors held Monolithic Power Systems (MPWR) as of Q2 2025, up from 860 in Q1 2025.
  • Funds reported $34.6B of Monolithic Power Systems stock for Q2 2025, up 28% quarter-over-quarter.
  • 137 funds opened new Monolithic Power Systems positions in Q2 2025 and 83 closed out, a net change of +54 holders.
  • The largest Monolithic Power Systems buyer in Q2 2025 was T. Rowe Price Investment Management, an estimated $391M added.
  • The largest Monolithic Power Systems seller in Q2 2025 was Alyeska Investment Group, an estimated $167M sold.

Based on aggregated 13F filings for Q2 2025.