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Factory Mutual Insurance’s Monolithic Power Systems MPWR Stock Holding History

Factory Mutual Insurance’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 		$49M Sell
35,457
-4,515
-11% -$6.78M 0.46% 57
2026
Q1 		$43.7M Buy
39,972
+700
+2% +$765K 0.49% 50
2025
Q4 		$35.6M Sell
39,272
-700
-2% -$674K 0.36% 73
2025
Q3 		$36.8M Hold
39,972
– – 0.36% 67
2025
Q2 		$29.2M Hold
39,972
– – 0.32% 81
2025
Q1 		$23.2M Buy
39,972
+8,700
+28% +$5.48M 0.27% 98
2024
Q4 		$18.5M Buy
31,272
+17,800
+132% +$12.9M 0.2% 121
2024
Q3 		$12.5M Buy
13,472
+6,616
+96% +$5.71M 0.13% 149
2024
Q2 		$5.63M Hold
6,856
– – 0.06% 156
2024
Q1 		$4.64M Hold
6,856
– – 0.05% 161
2023
Q4 		$4.32M Hold
6,856
– – 0.05% 153
2023
Q3 		$3.17M Buy
+6,856
New +$3.51M 0.04% 152

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

Factory Mutual Insurance's MPWR Position: Q2 2026 in Review

Factory Mutual Insurance reduced its Monolithic Power Systems (MPWR) stake by 11% in Q2 2026, selling an estimated $6.78M and leaving 35,457 shares worth $49M. The position accounts for 0.46% of the portfolio, ranked #57.

Factory Mutual Insurance first reported a position in MPWR in Q3 2023 and has held it in 12 quarters since. 1,240 funds tracked by Wall St. Rank hold MPWR as of Q2 2026.

  • Factory Mutual Insurance held 35,457 shares of Monolithic Power Systems worth $49M as of Q2 2026.
  • Factory Mutual Insurance sold 4,515 Monolithic Power Systems shares in Q2 2026, an estimated $6.78M.
  • Monolithic Power Systems made up 0.46% of Factory Mutual Insurance's portfolio in Q2 2026, its #57 holding.
  • Factory Mutual Insurance first reported a position in Monolithic Power Systems in Q3 2023 and has held it in 12 quarters since.
  • 1,240 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q2 2026.

Based on Factory Mutual Insurance's 13F filing for Q2 2026, filed 21 Jul 2026.