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Monolithic Power Systems
MPWR

Overview Fund Activity

848 hedge funds and large institutions have $26.7B invested in Monolithic Power Systems in 2025 Q1 according to their latest regulatory filings, with 122 funds opening new positions, 329 increasing their positions, 302 reducing their positions, and 108 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
848
Holders Change
-3
Holders Change %
-0.35%
% of All Funds
11.52%
Holding in Top 10
3
Holding in Top 10 Change
-4
Holding in Top 10 Change %
-57.14%
% of All Funds
0.04%
New
122
Increased
329
Reduced
302
Closed
108
Calls
$253M
Puts
$277M
Net Calls
-$24.4M
Net Calls Change
+$261M

Top Buyers

1
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
+$294M
2
Fidelity Investments
Fidelity Investments
Massachusetts
+$221M
3
VanEck Associates
VanEck Associates
New York
+$157M
4
Coatue Management
Coatue Management
New York
+$112M
5
WorldQuant Millennium Advisors
WorldQuant Millennium Advisors
New York
+$88.6M

Top Sellers

1
BlackRock
BlackRock
New York
-$295M
2
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
Ontario, Canada
-$82M
3
Bank of Nova Scotia
Bank of Nova Scotia
Ontario, Canada
-$78.6M
4
VNIM
Vaughan Nelson Investment Management
Texas
-$75.8M
5
Citadel Advisors
Citadel Advisors
Florida
-$75.6M
Name Holding Trade Value Shares
Change 		Shares
Change %
Dimensional Fund Advisors
51
Dimensional Fund Advisors
Texas
$93.1M +$558K +962 +0.6%
DDC
52
DF Dent & Co
Maryland
$92.8M +$2.58M +4,449 +3%
HSBC Holdings
53
HSBC Holdings
United Kingdom
$91.7M -$9.2M -15,946 -9%
WorldQuant Millennium Advisors
54
WorldQuant Millennium Advisors
New York
$91.3M +$88.6M +152,706 +3,257%
Holocene Advisors
55
Holocene Advisors
New York
$86.7M +$86.7M +149,569 New
Millennium Management
56
Millennium Management
New York
$86.1M +$13.9M +23,937 +19%
Royal Bank of Canada
57
Royal Bank of Canada
Ontario, Canada
$84.8M -$49.9M -86,101 -37%
TCM
58
TimesSquare Capital Management
New York
$84.3M +$5.02M +8,660 +6%
Swiss National Bank
59
Swiss National Bank
Switzerland
$79.8M -$58K -100 -0.1%
Natixis Advisors
60
Natixis Advisors
Massachusetts
$76.7M -$10.1M -17,445 -12%
RCM
61
Rokos Capital Management
United Kingdom
$75M -$29.9M -51,487 -28%
FCM
62
Frontier Capital Management
Massachusetts
$74.7M -$12M -20,731 -14%
Manulife (Manufacturers Life Insurance)
63
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$71.6M -$13.1M -22,522 -15%
CAM
64
Congress Asset Management
Massachusetts
$71.1M -$4.66M -8,042 -6%
RhumbLine Advisers
65
RhumbLine Advisers
Massachusetts
$67.5M +$5.04M +8,693 +8%
EAM
66
EULAV Asset Management
Florida
$67.4M +$1.16K +2 +0%
Adage Capital Partners
67
Adage Capital Partners
Massachusetts
$67.3M +$13M +22,500 +24%
RS
68
Robeco Schweiz
Switzerland
$67.3M +$3.37M +5,819 +5%
SO
69
STRS Ohio
Ohio
$66.1M – – –
Sumitomo Mitsui Trust Group
70
Sumitomo Mitsui Trust Group
Japan
$65.4M +$168K +289 +0.3%
LPL Financial
71
LPL Financial
California
$65M +$1.96M +3,379 +3%
Fidelity International
72
Fidelity International
Bermuda
$64.1M +$63.8M +109,989 +18,393%
Baird Financial Group
73
Baird Financial Group
Wisconsin
$62.9M -$31.5M -54,373 -33%
Janus Henderson Group
74
Janus Henderson Group
United Kingdom
$61.3M +$57.8M +99,668 +1,677%
Neuberger Berman Group
75
Neuberger Berman Group
New York
$59.6M -$21.8M -37,645 -27%
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