CastleKnight Management’s Silicon Motion SIMO Stock Holding History

CastleKnight Management’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 Q2	$6.67M	Sell	20,000 -160,000	-89%	-$37.1M	0.09%	159
2026 Q1	$20.2M	Buy	180,000 +166,300	+1,214%	+$20.2M	0.34%	46
2025 Q4	$1.27M	Buy	+13,700	New	+$1.26M	0.03%	246
2024 Q3	–	Sell	-100,000	Closed	-$8.1M	–	399
2024 Q2	$8.1M	Hold	100,000	–	–	0.4%	36
2024 Q1	$7.69M	Hold	100,000	–	–	0.46%	32
2023 Q4	$6.13M	Hold	100,000	–	–	0.32%	35
2023 Q3	$5.13M	Buy	+100,000	New	+$5.69M	0.34%	47

Other funds holding SIMO

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return

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

Alkeon Capital Management New York $74.1B AUM 71.18% 1-Year Est. Return

HRCM

Hawk Ridge Capital Management Los Angeles, California $3.12B AUM 53.42% 1-Year Est. Return

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

PCH

Polar Capital Holdings London, United Kingdom $42.4B AUM 181.11% 1-Year Est. Return

DCM

Driehaus Capital Management Chicago, Illinois $17.3B AUM 211.34% 1-Year Est. Return

Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

WHCM

Wolf Hill Capital Management Greenwich, Connecticut $1.2B AUM 137.35% 1-Year Est. Return

CastleKnight Management's SIMO Position: Q2 2026 in Review

CastleKnight Management reduced its Silicon Motion (SIMO) stake by 81% in Q2 2026, selling an estimated $60.7M and leaving 61,475 shares worth $20.5M. The position accounts for 0.28% of the portfolio, ranked #55.

CastleKnight Management first reported a position in SIMO in Q3 2023 and has held it in 9 quarters since. The position peaked at $36.3M in Q1 2026. 384 funds tracked by Wall St. Rank hold SIMO as of Q2 2026.

CastleKnight Management held 61,475 shares of Silicon Motion worth $20.5M as of Q2 2026.
CastleKnight Management sold 262,000 Silicon Motion shares in Q2 2026, an estimated $60.7M.
Silicon Motion made up 0.28% of CastleKnight Management's portfolio in Q2 2026, its #55 holding.
CastleKnight Management first reported a position in Silicon Motion in Q3 2023 and has held it in 9 quarters since.
CastleKnight Management's Silicon Motion position peaked at $36.3M in Q1 2026.
384 funds tracked by Wall St. Rank held Silicon Motion as of Q2 2026.

Based on CastleKnight Management's 13F filing for Q2 2026, filed 14 Aug 2026.