&Partners’s Monolithic Power Systems MPWR Stock Holding History

&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	$4.09M	Sell	3,765 -576	-13%	-$629K	0.02%	594
2025 Q4	$3.94M	Sell	4,341 -841	-16%	-$809K	0.02%	578
2025 Q3	$4.78M	Buy	5,182 +351	+7%	+$285K	0.03%	437
2025 Q2	$3.54M	Buy	4,831 +1,392	+40%	+$887K	0.03%	461
2025 Q1	$2M	Buy	3,439 +413	+14%	+$260K	0.02%	537
2024 Q4	$1.87M	Buy	3,026 +965	+47%	+$699K	0.02%	522
2024 Q3	$1.9M	Buy	2,061 +1,419	+221%	+$1.23M	0.04%	376
2024 Q2	$528K	Buy	+642	New	+$463K	0.02%	521

Other funds holding MPWR

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

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 Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

Franklin Resources San Mateo, California $408B AUM 30.18% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return

&Partners's MPWR Position: Q1 2026 in Review

&Partners reduced its Monolithic Power Systems (MPWR) stake by 13% in Q1 2026, selling an estimated $629K and leaving 3,765 shares worth $4.09M. The position accounts for 0.02% of the portfolio, ranked #594.

&Partners first reported a position in MPWR in Q2 2024 and has held it in 8 quarters since. The position peaked at $4.78M in Q3 2025. 1,114 funds tracked by Wall St. Rank hold MPWR as of Q1 2026.

&Partners held 3,765 shares of Monolithic Power Systems worth $4.09M as of Q1 2026.
&Partners sold 576 Monolithic Power Systems shares in Q1 2026, an estimated $629K.
Monolithic Power Systems made up 0.02% of &Partners's portfolio in Q1 2026, its #594 holding.
&Partners first reported a position in Monolithic Power Systems in Q2 2024 and has held it in 8 quarters since.
&Partners's Monolithic Power Systems position peaked at $4.78M in Q3 2025.
1,114 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q1 2026.

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