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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
Neuberger Berman Group
76
Neuberger Berman Group
New York
$59.6M -$23.7M -37,645 -27%
Caisse de Depot et Placement du Quebec (CDPQ)
77
Caisse de Depot et Placement du Quebec (CDPQ)
Quebec, Canada
$57.5M -$25.5M -40,398 -29%
Mitsubishi UFJ Asset Management
78
Mitsubishi UFJ Asset Management
Japan
$57.5M +$13M +20,625 +26%
Amundi
79
Amundi
France
$56.4M +$8.46M +13,424 +15%
California Public Employees Retirement System
80
California Public Employees Retirement System
California
$55.7M +$9.42M +14,954 +18%
Balyasny Asset Management
81
Balyasny Asset Management
Illinois
$55.1M -$19.7M -31,249 -25%
PAM
82
Panagora Asset Management
Massachusetts
$54.8M +$16.1M +25,533 +37%
Victory Capital Management
83
Victory Capital Management
Texas
$53.5M -$28.2M -44,745 -33%
Stifel Financial
84
Stifel Financial
Missouri
$48.3M +$3.96M +6,278 +8%
Allianz Asset Management
85
Allianz Asset Management
Germany
$48.1M -$50.5M -80,102 -49%
RAM
86
Resona Asset Management
Japan
$47.3M +$226K +359 +0.4%
CS
87
Candriam SCA
Luxembourg
$44.5M +$16.3M +25,859 +51%
National Pension Service
88
National Pension Service
South Korea
$44.4M +$6.37M +10,108 +15%
Mirae Asset Global Investments
89
Mirae Asset Global Investments
South Korea
$43.4M +$3.92M +6,217 +9%
California State Teachers Retirement System (CalSTRS)
90
California State Teachers Retirement System (CalSTRS)
California
$43M -$506K -803 -1%
Zurich Cantonal Bank
91
Zurich Cantonal Bank
Switzerland
$42.7M +$12M +18,985 +35%
GPGA
92
Grandeur Peak Global Advisors
Utah
$41.9M +$6.39M +10,148 +16%
AQR Capital Management
93
AQR Capital Management
Connecticut
$41.4M -$9.7M -15,396 -17%
Axa
94
Axa
France
$41M +$6.67M +10,592 +18%
Wells Fargo
95
Wells Fargo
California
$39.9M -$417K -662 -1%
Susquehanna International Group
96
Susquehanna International Group
Pennsylvania
$37.6M +$8.27M +13,131 +25%
Canada Life
97
Canada Life
Manitoba, Canada
$36.3M -$4.06M -6,435 -9%
Corient Private Wealth
98
Corient Private Wealth
Florida
$33.7M -$6.09M -9,660 -14%
Canada Pension Plan Investment Board
99
Canada Pension Plan Investment Board
Ontario, Canada
$33.3M -$61.6M -97,831 -63%
FGP
100
Freestone Grove Partners
California
$33M +$19M +30,210 +113%
2 3
4
5 6

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.