Deroy & Devereaux Private Investment Counsel’s Monolithic Power Systems MPWR Stock Holding History

Deroy & Devereaux Private Investment Counsel’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	–	Sell	-500	Closed	-$453K	–	179
2025 Q4	$453K	Hold	500	–	–	0.02%	134
2025 Q3	$460K	Hold	500	–	–	0.02%	135
2025 Q2	$366K	Hold	500	–	–	0.02%	137
2025 Q1	$290K	Sell	500 -250	-33%	-$158K	0.02%	148
2024 Q4	$444K	Hold	750	–	–	0.03%	131
2024 Q3	$693K	Hold	750	–	–	0.04%	115
2024 Q2	$616K	Sell	750 -250	-25%	-$180K	0.04%	117
2024 Q1	$677K	Hold	1,000	–	–	0.04%	116
2023 Q4	$631K	Sell	1,000 -504	-34%	-$263K	0.04%	115
2023 Q3	$695K	Hold	1,504	–	–	0.05%	107
2023 Q2	$813K	Buy	+1,504	New	+$714K	0.06%	105

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

T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return

Deroy & Devereaux Private Investment Counsel's MPWR Position: Q1 2026 in Review

Deroy & Devereaux Private Investment Counsel sold out of Monolithic Power Systems (MPWR) in Q1 2026, closing a stake of 500 shares — an estimated $453K sold.

Deroy & Devereaux Private Investment Counsel first reported a position in MPWR in Q2 2023 and held it in 11 quarters. The position peaked at $813K in Q2 2023. 1,121 funds tracked by Wall St. Rank hold MPWR as of Q1 2026.

Deroy & Devereaux Private Investment Counsel reported no remaining Monolithic Power Systems position as of Q1 2026 after selling out during the quarter.
Deroy & Devereaux Private Investment Counsel sold 500 Monolithic Power Systems shares in Q1 2026, an estimated $453K.
Deroy & Devereaux Private Investment Counsel first reported a position in Monolithic Power Systems in Q2 2023 and held it in 11 quarters.
Deroy & Devereaux Private Investment Counsel's Monolithic Power Systems position peaked at $813K in Q2 2023.
1,121 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q1 2026.

Based on Deroy & Devereaux Private Investment Counsel's 13F filing for Q1 2026, filed 27 Apr 2026.