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Monolithic Power Systems
MPWR

1,114 hedge funds and large institutions have $51.6B invested in Monolithic Power Systems in 2026 Q1 according to their latest regulatory filings, with 177 funds opening new positions, 383 increasing their positions, 404 reducing their positions, and 102 closing their positions.

New
Increased
Maintained
Reduced
Closed

74% more first-time investments, than exits

New positions opened: 177 | Existing positions closed: 102

44% more funds holding in top 10

Funds holding in top 10: 9 → 13 (+4)

17% more capital invested

Capital invested by funds: $44.2B → $51.6B (+$7.36B)

5% more funds holding

Funds holding: 1,059 → 1,114 (+55)

5% less repeat investments, than reductions

Existing positions increased: 383 | Existing positions reduced: 404

9.8% less ownership

Funds ownership: 106.01% → 96.22% (-9.8%)

29% less call options, than puts

Call options by funds: $299M | Put options by funds: $418M

Holders
1,114
Holders Change
+55
Holders Change %
+5.19%
% of All Funds
13.71%
Holding in Top 10
13
Holding in Top 10 Change
+4
Holding in Top 10 Change %
+44.44%
% of All Funds
0.16%
New
177
Increased
383
Reduced
404
Closed
102
Calls
$299M
Puts
$418M
Net Calls
-$120M
Net Calls Change
+$145M

Top Buyers

1
Fidelity Investments
Fidelity Investments
Massachusetts
+$463M
2
Royal Bank of Canada
Royal Bank of Canada
Ontario, Canada
+$324M
3
Lord, Abbett & Co
Lord, Abbett & Co
New Jersey
+$122M
4
BlackRock
BlackRock
New York
+$120M
5
UBS Group
UBS Group
Switzerland
+$111M

Top Sellers

1
Corient Private Wealth
Corient Private Wealth
Florida
-$2.28B
2
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
-$468M
3
Bank of America
Bank of America
North Carolina
-$183M
4
Fidelity International
Fidelity International
Bermuda
-$176M
5
Wellington Management Group
Wellington Management Group
Massachusetts
-$147M
Name Holding Trade Value Shares
Change 		Change in
Stake
HHMI
1201
Howard Hughes Medical Institute
Maryland
– -$9.06K -10 Closed
LIA
1202
Luken Investment Analytics
Tennessee
– -$8.16K -9 Closed
QL
1203
Quarry LP
New York
– -$7.25K -8 Closed
WWA
1204
Wealth Watch Advisors
Colorado
– -$7.25K -8 Closed
CIA
1205
Cape Investment Advisory
Georgia
– -$6.34K -7 Closed
CWP
1206
Concord Wealth Partners
Virginia
– -$6.34K -7 Closed
UCB
1207
United Community Bank
South Carolina
– -$4.53K -5 Closed
JWM
1208
Jessup Wealth Management
Ohio
– -$3.63K -4 Closed
NA
1209
Networth Advisors
Pennsylvania
– -$3.63K -4 Closed
TPBG
1210
Turning Point Benefit Group
Maryland
– -$3.63K -4 Closed
NWM
1211
Nova Wealth Management
Florida
– -$3.12K -3 Closed
OC
1212
Optima Capital
Oregon
– -$2.72K -3 Closed
HIA
1213
HFM Investment Advisors
New Jersey
– -$1.81K -2 Closed
APW
1214
Atlantic Private Wealth
North Carolina
– -$906 -1 Closed
EB
1215
Eastern Bank
Massachusetts
– -$906 -1 Closed
LB
1216
Legacy Bridge
Iowa
– -$907 -1 Closed
TF
1217
Tompkins Financial
New York
– -$906 -1 Closed
45 46 47 48
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MPWR Hedge Fund Activity: Q1 2026 in Review

1,114 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in Monolithic Power Systems (MPWR) for Q1 2026, worth a combined $51.6B — up 17% from $44.2B a quarter earlier.

Buyers outnumbered sellers: 177 funds opened new MPWR positions and 102 closed out — a net gain of 75 holders — while 383 added to existing stakes and 404 trimmed.

The largest buyer was Fidelity Investments, adding an estimated $463M. The largest seller was Corient Private Wealth, cutting an estimated $2.28B.

  • 1,114 institutional investors held Monolithic Power Systems (MPWR) as of Q1 2026, up from 1,059 in Q4 2025.
  • Funds reported $51.6B of Monolithic Power Systems stock for Q1 2026, up 17% quarter-over-quarter.
  • 177 funds opened new Monolithic Power Systems positions in Q1 2026 and 102 closed out, a net change of +75 holders.
  • The largest Monolithic Power Systems buyer in Q1 2026 was Fidelity Investments, an estimated $463M added.
  • The largest Monolithic Power Systems seller in Q1 2026 was Corient Private Wealth, an estimated $2.28B sold.

Based on aggregated 13F filings for Q1 2026.