Investment Management Corp of Ontario (IMCO)’s Monolithic Power Systems MPWR Stock Holding History

Investment Management Corp of Ontario (IMCO)’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	$5.64M	Buy	5,158 +963	+23%	+$1.05M	0.07%	243
2025 Q4	$3.8M	Buy	4,195 +1,913	+84%	+$1.84M	0.05%	300
2025 Q3	$2.1M	Buy	2,282 +563	+33%	+$457K	0.03%	338
2025 Q2	$1.26M	Sell	1,719 -684	-28%	-$436K	0.02%	382
2025 Q1	$1.39M	Buy	+2,403	New	+$1.51M	0.03%	355
2024 Q4	–	Sell	-1,579	Closed	-$1.46M	–	539
2024 Q3	$1.46M	Buy	1,579 +500	+46%	+$432K	0.03%	323
2024 Q2	$887K	Buy	1,079 +300	+39%	+$216K	0.02%	350
2024 Q1	$528K	Sell	779 -300	-28%	-$200K	0.02%	413
2023 Q4	$681K	Buy	+1,079	New	+$564K	0.02%	414
2023 Q1	–	Sell	-5,612	Closed	-$1.98M	–	198
2022 Q4	$1.98M	Buy	+5,612	New	+$2.02M	0.1%	94

Other funds holding MPWR

BlackRock New York $6.73T AUM 46.02% 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 $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 $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

Investment Management Corp of Ontario (IMCO)'s MPWR Position: Q1 2026 in Review

Investment Management Corp of Ontario (IMCO) increased its Monolithic Power Systems (MPWR) stake by 23% in Q1 2026, buying an estimated $1.05M and bringing the position to 5,158 shares worth $5.64M. The position accounts for 0.07% of the portfolio, ranked #243.

Investment Management Corp of Ontario (IMCO) first reported a position in MPWR in Q4 2022 and has held it in 10 quarters since. 1,120 funds tracked by Wall St. Rank hold MPWR as of Q1 2026.

Investment Management Corp of Ontario (IMCO) held 5,158 shares of Monolithic Power Systems worth $5.64M as of Q1 2026.
Investment Management Corp of Ontario (IMCO) bought 963 Monolithic Power Systems shares in Q1 2026, an estimated $1.05M.
Monolithic Power Systems made up 0.07% of Investment Management Corp of Ontario (IMCO)'s portfolio in Q1 2026, its #243 holding.
Investment Management Corp of Ontario (IMCO) first reported a position in Monolithic Power Systems in Q4 2022 and has held it in 10 quarters since.
1,120 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q1 2026.

Based on Investment Management Corp of Ontario (IMCO)'s 13F filing for Q1 2026, filed 15 May 2026.