PSP
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Principal Street Partners’s Monolithic Power Systems MPWR Stock Holding History

Principal Street Partners’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 		$274K Hold
198
– – 0.04% 205
2026
Q1 		$216K Buy
+198
New +$216K 0.04% 220
2025
Q3 		– Sell
-376
Closed -$275K – 330
2025
Q2 		$275K Buy
+376
New +$240K 0.03% 293

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 $3.38T AUM 44.17% 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

Principal Street Partners's MPWR Position: Q2 2026 in Review

Principal Street Partners held its Monolithic Power Systems (MPWR) position steady in Q2 2026 at 198 shares worth $274K. The position accounts for 0.04% of the portfolio, ranked #205.

Principal Street Partners first reported a position in MPWR in Q2 2025 and has held it in 3 quarters since. The position peaked at $275K in Q2 2025. 1,246 funds tracked by Wall St. Rank hold MPWR as of Q2 2026.

  • Principal Street Partners held 198 shares of Monolithic Power Systems worth $274K as of Q2 2026.
  • Principal Street Partners left its Monolithic Power Systems share count unchanged in Q2 2026.
  • Monolithic Power Systems made up 0.04% of Principal Street Partners's portfolio in Q2 2026, its #205 holding.
  • Principal Street Partners first reported a position in Monolithic Power Systems in Q2 2025 and has held it in 3 quarters since.
  • Principal Street Partners's Monolithic Power Systems position peaked at $275K in Q2 2025.
  • 1,246 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q2 2026.

Based on Principal Street Partners's 13F filing for Q2 2026, filed 14 Aug 2026.