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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
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 $5.72T AUM 30.48% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Franklin Resources
Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

Principal Street Partners's MPWR Position: Q1 2026 in Review

Principal Street Partners opened a new position in Monolithic Power Systems (MPWR) in Q1 2026: 198 shares worth $216K. The stake represents 0.04% of the portfolio and ranks #220 among its holdings. This is a return to the name: Principal Street Partners previously reported a position in MPWR as recently as Q2 2025.

Principal Street Partners first reported a position in MPWR in Q2 2025 and has held it in 2 quarters since. The position peaked at $275K in Q2 2025. 1,114 funds tracked by Wall St. Rank hold MPWR as of Q1 2026.

  • Principal Street Partners held 198 shares of Monolithic Power Systems worth $216K as of Q1 2026.
  • Monolithic Power Systems was a new Principal Street Partners position in Q1 2026.
  • Monolithic Power Systems made up 0.04% of Principal Street Partners's portfolio in Q1 2026, its #220 holding.
  • Principal Street Partners first reported a position in Monolithic Power Systems in Q2 2025 and has held it in 2 quarters since.
  • Principal Street Partners's Monolithic Power Systems position peaked at $275K in Q2 2025.
  • 1,114 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q1 2026.

Based on Principal Street Partners's 13F filing for Q1 2026, filed 15 May 2026.