T. Rowe Price Investment Management’s Monolithic Power Systems MPWR Stock Holding History

T. Rowe Price Investment 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	–	Sell	-721,622	Closed	-$789M	–	782
2026 Q1	$789M	Sell	721,622 -2,872	-0.4%	-$3.14M	0.54%	44
2025 Q4	$657M	Sell	724,494 -26,194	-3%	-$25.2M	0.41%	59
2025 Q3	$691M	Sell	750,688 -177,118	-19%	-$144M	0.42%	60
2025 Q2	$679M	Buy	927,806 +613,357	+195%	+$391M	0.43%	56
2025 Q1	$182M	Buy	314,449 +130,394	+71%	+$82.2M	0.12%	185
2024 Q4	$109M	Buy	+184,055	New	+$133M	0.07%	275
2022 Q4	–	Sell	-24,404	Closed	-$8.87M	–	557
2022 Q3	$8.87M	Buy	+24,404	New	+$10.9M	0.01%	506

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

T. Rowe Price Investment Management's MPWR Position: Q2 2026 in Review

T. Rowe Price Investment Management sold out of Monolithic Power Systems (MPWR) in Q2 2026, closing a stake of 721,622 shares — an estimated $789M sold.

T. Rowe Price Investment Management first reported a position in MPWR in Q3 2022 and held it in 7 quarters. The position peaked at $789M in Q1 2026. 1,235 funds tracked by Wall St. Rank hold MPWR as of Q2 2026.

T. Rowe Price Investment Management reported no remaining Monolithic Power Systems position as of Q2 2026 after selling out during the quarter.
T. Rowe Price Investment Management sold 721,622 Monolithic Power Systems shares in Q2 2026, an estimated $789M.
T. Rowe Price Investment Management first reported a position in Monolithic Power Systems in Q3 2022 and held it in 7 quarters.
T. Rowe Price Investment Management's Monolithic Power Systems position peaked at $789M in Q1 2026.
1,235 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q2 2026.

Based on T. Rowe Price Investment Management's 13F filing for Q2 2026, filed 14 Aug 2026.