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Westerkirk Capital’s Monolithic Power Systems MPWR Stock Holding History

Westerkirk Capital’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 		– Sell
-2,424
Closed -$2.65M – 224
2026
Q1 		$2.65M Sell
2,424
-120
-5% -$131K 0.29% 69
2025
Q4 		$2.31M Buy
2,544
+936
+58% +$901K 0.22% 78
2025
Q3 		$1.48M Hold
1,608
– – 0.17% 110
2025
Q2 		$1.18M Buy
+1,608
New +$1.02M 0.15% 131

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

Westerkirk Capital's MPWR Position: Q2 2026 in Review

Westerkirk Capital sold out of Monolithic Power Systems (MPWR) in Q2 2026, closing a stake of 2,424 shares — an estimated $2.65M sold.

Westerkirk Capital first reported a position in MPWR in Q2 2025 and held it in 4 quarters. The position peaked at $2.65M in Q1 2026. 1,245 funds tracked by Wall St. Rank hold MPWR as of Q2 2026.

  • Westerkirk Capital reported no remaining Monolithic Power Systems position as of Q2 2026 after selling out during the quarter.
  • Westerkirk Capital sold 2,424 Monolithic Power Systems shares in Q2 2026, an estimated $2.65M.
  • Westerkirk Capital first reported a position in Monolithic Power Systems in Q2 2025 and held it in 4 quarters.
  • Westerkirk Capital's Monolithic Power Systems position peaked at $2.65M in Q1 2026.
  • 1,245 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q2 2026.

Based on Westerkirk Capital's 13F filing for Q2 2026, filed 10 Aug 2026.