Grantham, Mayo, Van Otterloo & Co (GMO)
MPWR icon

Grantham, Mayo, Van Otterloo & Co (GMO)’s Monolithic Power Systems MPWR Stock Holding History

Grantham, Mayo, Van Otterloo & Co (GMO)’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 		$1.48M Sell
1,071
-447
-29% -$671K ﹤0.01% 484
2026
Q1 		$1.66M Buy
1,518
+31
+2% +$33.9K ﹤0.01% 451
2025
Q4 		$1.35M Buy
1,487
+79
+6% +$76K ﹤0.01% 460
2025
Q3 		$1.3M Buy
+1,408
New +$1.14M ﹤0.01% 430

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

Grantham, Mayo, Van Otterloo & Co (GMO)'s MPWR Position: Q2 2026 in Review

Grantham, Mayo, Van Otterloo & Co (GMO) reduced its Monolithic Power Systems (MPWR) stake by 29% in Q2 2026, selling an estimated $671K and leaving 1,071 shares worth $1.48M. The position accounts for ﹤0.01% of the portfolio, ranked #484.

Grantham, Mayo, Van Otterloo & Co (GMO) first reported a position in MPWR in Q3 2025 and has held it in 4 quarters since. The position peaked at $1.66M in Q1 2026. 1,237 funds tracked by Wall St. Rank hold MPWR as of Q2 2026.

  • Grantham, Mayo, Van Otterloo & Co (GMO) held 1,071 shares of Monolithic Power Systems worth $1.48M as of Q2 2026.
  • Grantham, Mayo, Van Otterloo & Co (GMO) sold 447 Monolithic Power Systems shares in Q2 2026, an estimated $671K.
  • Monolithic Power Systems made up ﹤0.01% of Grantham, Mayo, Van Otterloo & Co (GMO)'s portfolio in Q2 2026, its #484 holding.
  • Grantham, Mayo, Van Otterloo & Co (GMO) first reported a position in Monolithic Power Systems in Q3 2025 and has held it in 4 quarters since.
  • Grantham, Mayo, Van Otterloo & Co (GMO)'s Monolithic Power Systems position peaked at $1.66M in Q1 2026.
  • 1,237 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q2 2026.

Based on Grantham, Mayo, Van Otterloo & Co (GMO)'s 13F filing for Q2 2026, filed 13 Aug 2026.