BFO
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Boston Family Office’s Monolithic Power Systems MPWR Stock Holding History

Boston Family Office’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 		$8.74M Buy
6,321
+1,777
+39% +$2.67M 0.53% 50
2026
Q1 		$4.97M Sell
4,544
-109
-2% -$119K 0.33% 74
2025
Q4 		$4.22M Buy
4,653
+1,406
+43% +$1.35M 0.27% 82
2025
Q3 		$2.99M Buy
3,247
+733
+29% +$594K 0.19% 96
2025
Q2 		$1.84M Sell
2,514
-105
-4% -$66.9K 0.12% 128
2025
Q1 		$1.52M Buy
2,619
+5
+0.2% +$3.15K 0.11% 132
2024
Q4 		$1.55M Buy
2,614
+2,383
+1,032% +$1.73M 0.11% 129
2024
Q3 		$214K Buy
+231
New +$199K 0.01% 268

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

Boston Family Office's MPWR Position: Q2 2026 in Review

Boston Family Office increased its Monolithic Power Systems (MPWR) stake by 39% in Q2 2026, buying an estimated $2.67M and bringing the position to 6,321 shares worth $8.74M. The position accounts for 0.53% of the portfolio, ranked #50.

Boston Family Office first reported a position in MPWR in Q3 2024 and has held it in 8 quarters since. 1,244 funds tracked by Wall St. Rank hold MPWR as of Q2 2026.

  • Boston Family Office held 6,321 shares of Monolithic Power Systems worth $8.74M as of Q2 2026.
  • Boston Family Office bought 1,777 Monolithic Power Systems shares in Q2 2026, an estimated $2.67M.
  • Monolithic Power Systems made up 0.53% of Boston Family Office's portfolio in Q2 2026, its #50 holding.
  • Boston Family Office first reported a position in Monolithic Power Systems in Q3 2024 and has held it in 8 quarters since.
  • 1,244 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q2 2026.

Based on Boston Family Office's 13F filing for Q2 2026, filed 12 Aug 2026.