Mainstay Capital Management’s Monolithic Power Systems MPWR Stock Holding History

Mainstay Capital Management’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	$590K	Sell	427 -16	-4%	-$24K	0.04%	93
2026 Q1	$484K	Sell	443 -7	-2%	-$7.65K	0.04%	96
2025 Q4	$408K	Buy	450 +14	+3%	+$13.5K	0.03%	96
2025 Q3	$401K	Sell	436 -358	-45%	-$290K	0.04%	86
2025 Q2	$581K	Buy	794 +422	+113%	+$269K	0.03%	90
2025 Q1	$216K	Buy	372 +10	+3%	+$6.3K	0.03%	103
2024 Q4	$214K	Buy	362 +5	+1%	+$3.62K	0.03%	101
2024 Q3	$330K	Hold	357	–	–	0.06%	78
2024 Q2	$293K	Buy	357 +2	+0.6%	+$1.44K	0.05%	84
2024 Q1	$240K	Buy	355 +2	+0.6%	+$1.33K	0.05%	105
2023 Q4	$223K	Buy	+353	New	+$184K	0.04%	101
2023 Q3	–	Sell	-411	Closed	-$222K	–	101
2023 Q2	$222K	Sell	411 -55	-12%	-$26.1K	0.04%	100
2023 Q1	$233K	Buy	+466	New	+$214K	0.05%	98

Other funds holding MPWR

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Franklin Resources San Mateo, California $462B AUM 39.16% 1-Year Est. Return

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

Mainstay Capital Management's MPWR Position: Q2 2026 in Review

Mainstay Capital Management reduced its Monolithic Power Systems (MPWR) stake by 3.6% in Q2 2026, selling an estimated $24K and leaving 427 shares worth $590K. The position accounts for 0.04% of the portfolio, ranked #93.

Mainstay Capital Management first reported a position in MPWR in Q1 2023 and has held it in 13 quarters since. 1,244 funds tracked by Wall St. Rank hold MPWR as of Q2 2026.

Mainstay Capital Management held 427 shares of Monolithic Power Systems worth $590K as of Q2 2026.
Mainstay Capital Management sold 16 Monolithic Power Systems shares in Q2 2026, an estimated $24K.
Monolithic Power Systems made up 0.04% of Mainstay Capital Management's portfolio in Q2 2026, its #93 holding.
Mainstay Capital Management first reported a position in Monolithic Power Systems in Q1 2023 and has held it in 13 quarters since.
1,244 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q2 2026.

Based on Mainstay Capital Management's 13F filing for Q2 2026, filed 12 Aug 2026.