Polar Asset Management Partners’s Silicon Motion SIMO Stock Holding History

Polar Asset Management Partners’s Portfolio SIMO Stock Details SIMO Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$3.17M	Buy	+28,218	New	+$3.42M	0.06%	284
2025 Q4	–	Sell	-120,840	Closed	-$11.5M	–	807
2025 Q3	$11.5M	Sell	120,840 -84,911	-41%	-$6.75M	0.13%	125
2025 Q2	$15.5M	Buy	205,751 +92,475	+82%	+$5.25M	0.24%	68
2025 Q1	$5.73M	Sell	113,276 -49,424	-30%	-$2.67M	0.13%	172
2024 Q4	$8.79M	Sell	162,700 -17,300	-10%	-$969K	0.1%	173
2024 Q3	$10.9M	Buy	180,000 +27,900	+18%	+$1.84M	0.23%	107
2024 Q2	$12.3M	Sell	152,100 -33,400	-18%	-$2.61M	0.26%	83
2024 Q1	$14.3M	Buy	185,500 +15,400	+9%	+$1.05M	0.24%	73
2023 Q4	$10.4M	Buy	170,100 +160,100	+1,601%	+$9.15M	0.18%	109
2023 Q3	$513K	Buy	+10,000	New	+$569K	0.01%	496

Other funds holding SIMO

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Reinhart Partners Mequon, Wisconsin $4.38B AUM 55.55% 1-Year Est. Return

Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return

HRCM

Hawk Ridge Capital Management Los Angeles, California $2.75B AUM 20.09% 1-Year Est. Return

Lord, Abbett & Co Jersey City, New Jersey $30.6B AUM 57.44% 1-Year Est. Return

Lazard Asset Management New York $60.8B AUM 22.47% 1-Year Est. Return

Robeco Institutional Asset Management Rotterdam, Netherlands $81.4B AUM 40.71% 1-Year Est. Return

WHCM

Wolf Hill Capital Management Greenwich, Connecticut $1.03B AUM 80.44% 1-Year Est. Return

Man Group London, United Kingdom $55.1B AUM 24.23% 1-Year Est. Return

ACM

Analog Century Management New York $2.09B AUM 186.85% 1-Year Est. Return

Polar Asset Management Partners's SIMO Position: Q1 2026 in Review

Polar Asset Management Partners opened a new position in Silicon Motion (SIMO) in Q1 2026: 28,218 shares worth $3.17M. The stake represents 0.06% of the portfolio and ranks #284 among its holdings. This is a return to the name: Polar Asset Management Partners previously reported a position in SIMO as recently as Q3 2025.

Polar Asset Management Partners first reported a position in SIMO in Q3 2023 and has held it in 10 quarters since. The position peaked at $15.5M in Q2 2025. 273 funds tracked by Wall St. Rank hold SIMO as of Q1 2026.

Polar Asset Management Partners held 28,218 shares of Silicon Motion worth $3.17M as of Q1 2026.
Silicon Motion was a new Polar Asset Management Partners position in Q1 2026.
Silicon Motion made up 0.06% of Polar Asset Management Partners's portfolio in Q1 2026, its #284 holding.
Polar Asset Management Partners first reported a position in Silicon Motion in Q3 2023 and has held it in 10 quarters since.
Polar Asset Management Partners's Silicon Motion position peaked at $15.5M in Q2 2025.
273 funds tracked by Wall St. Rank held Silicon Motion as of Q1 2026.

Based on Polar Asset Management Partners's 13F filing for Q1 2026, filed 15 May 2026.