Polar Asset Management Partners’s Monolithic Power Systems MPWR Stock Holding History

Polar Asset Management 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
2025 Q3	–	Sell	-7,290	Closed	-$5.33M	–	763
2025 Q2	$5.33M	Buy	+7,290	New	+$4.64M	0.08%	189
2025 Q1	–	Sell	-20,000	Closed	-$11.8M	–	662
2024 Q4	$11.8M	Buy	+20,000	New	+$14.5M	0.14%	136
2021 Q3	–	Sell	-1,285	Closed	-$480K	–	1339
2021 Q2	$480K	Buy	+1,285	New	+$452K	﹤0.01%	799
2021 Q1	–	Sell	-1,455	Closed	-$533K	–	1073
2020 Q4	$533K	Buy	+1,455	New	+$466K	0.01%	529
2020 Q3	–	Sell	-2,870	Closed	-$680K	–	678
2020 Q2	$680K	Buy	+2,870	New	+$581K	0.01%	338

Other funds holding MPWR

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

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

State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return

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

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

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

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

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

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

Polar Asset Management Partners's MPWR Position: Q3 2025 in Review

Polar Asset Management Partners sold out of Monolithic Power Systems (MPWR) in Q3 2025, closing a stake of 7,290 shares — an estimated $5.33M sold.

Polar Asset Management Partners first reported a position in MPWR in Q2 2020 and held it in 5 quarters. The position peaked at $11.8M in Q4 2024. 981 funds tracked by Wall St. Rank hold MPWR as of Q3 2025.

Polar Asset Management Partners reported no remaining Monolithic Power Systems position as of Q3 2025 after selling out during the quarter.
Polar Asset Management Partners sold 7,290 Monolithic Power Systems shares in Q3 2025, an estimated $5.33M.
Polar Asset Management Partners first reported a position in Monolithic Power Systems in Q2 2020 and held it in 5 quarters.
Polar Asset Management Partners's Monolithic Power Systems position peaked at $11.8M in Q4 2024.
981 funds tracked by Wall St. Rank held Monolithic Power Systems as of Q3 2025.

Based on Polar Asset Management Partners's 13F filing for Q3 2025, filed 14 Nov 2025.