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Sirios Capital Management’s Monolithic Power Systems MPWR Stock Holding History

Sirios Capital Management’s Portfolio MPWR Stock Details MPWR Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$1.17M Sell
845
-733
-46% -$1.1M 0.14% 76
2026
Q1 		$1.73M Sell
1,578
-886
-36% -$968K 0.21% 68
2025
Q4 		$2.23M Sell
2,464
-181
-7% -$174K 0.28% 53
2025
Q3 		$2.44M Sell
2,645
-673
-20% -$546K 0.32% 47
2025
Q2 		$2.43M Sell
3,318
-2,003
-38% -$1.28M 0.35% 42
2025
Q1 		$3.09M Buy
5,321
+3,374
+173% +$2.13M 0.55% 31
2024
Q4 		$1.15M Buy
1,947
+727
+60% +$526K 0.21% 49
2024
Q3 		$1.13M Buy
1,220
+312
+34% +$269K 0.2% 53
2024
Q2 		$746K Buy
+908
New +$655K 0.13% 59

Other funds holding MPWR

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $462B AUM 39.16% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

Sirios Capital Management's MPWR Position: Q2 2026 in Review

Sirios Capital Management reduced its Monolithic Power Systems (MPWR) stake by 46% in Q2 2026, selling an estimated $1.1M and leaving 845 shares worth $1.17M. The position accounts for 0.14% of the portfolio, ranked #76.

Sirios Capital Management first reported a position in MPWR in Q2 2024 and has held it in 9 quarters since. The position peaked at $3.09M in Q1 2025. 1,240 funds tracked by Wall St. Rank hold MPWR as of Q2 2026.

  • Sirios Capital Management held 845 shares of Monolithic Power Systems worth $1.17M as of Q2 2026.
  • Sirios Capital Management sold 733 Monolithic Power Systems shares in Q2 2026, an estimated $1.1M.
  • Monolithic Power Systems made up 0.14% of Sirios Capital Management's portfolio in Q2 2026, its #76 holding.
  • Sirios Capital Management first reported a position in Monolithic Power Systems in Q2 2024 and has held it in 9 quarters since.
  • Sirios Capital Management's Monolithic Power Systems position peaked at $3.09M in Q1 2025.
  • 1,240 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q2 2026.

Based on Sirios Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.