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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
CT
826
Colonial Trust
South Carolina
$2.06K -$14.5K -23 -85%
AW
827
Avion Wealth
Texas
$2K – – –
CAL
828
Capital Advisors Ltd
Ohio
$2K +$630 +1 +50%
NS
829
NBC Securities
Alabama
$2K +$3.15K +5 New
HFS
830
Hughes Financial Services
Virginia
$1.74K +$1.89K +3 New
HCP
831
Hexagon Capital Partners
Arkansas
$1.74K -$1.89K -3 -50%
AFG
832
Albion Financial Group
Utah
$1.74K – – –
CBT
833
Crews Bank & Trust
Florida
$1.74K – – –
LIM
834
Longfellow Investment Management
Massachusetts
$1.74K – – –
CWC
835
Carolinas Wealth Consulting
North Carolina
$1.74K +$1.26K +2 +200%
AA
836
Addison Advisors
Vermont
$1.74K +$1.89K +3 New
PWA
837
Principia Wealth Advisory
Texas
$1.69K +$1.26K +2 +200%
CWM
838
Cranbrook Wealth Management
Michigan
$1.28K – – –
DPW
839
DiNuzzo Private Wealth
Pennsylvania
$1.16K – – –
DJSG
840
D.J. St. Germain
Massachusetts
$1.16K – – –
TFM
841
TFC Financial Management
Massachusetts
$1.16K – – –
TCA
842
Trifecta Capital Advisors
Illinois
$1.16K – – –
BLC
843
Brown, Lisle/Cummings
Rhode Island
$1.16K +$1.26K +2 New
DWM
844
Dogwood Wealth Management
Kansas
$1.16K +$1.26K +2 New
KFI
845
Key Financial Inc
Pennsylvania
$1.16K +$1.26K +2 New
PWAM
846
Private Wealth Asset Management
Iowa
$1.16K +$1.26K +2 New
RAM
847
Riggs Asset Management
Pennsylvania
$1.16K +$1.26K +2 New
PEAK6
848
PEAK6
Illinois
$913 -$589K -935 -100%
BHWM
849
Bay Harbor Wealth Management
Maryland
$581 +$630 +1 New
AA
850
Ancora Advisors
Ohio
$580 -$630 -1 -50%
32 33
34
35 36

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.