Jane Street
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Jane Street’s Silicon Motion SIMO Stock Holding History

Jane Street’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 		$10.2M Buy
90,700
+32,600
+56% +$3.96M ﹤0.01% 2518
2025
Q4 		$5.39M Sell
58,100
-72,200
-55% -$6.63M ﹤0.01% 3116
2025
Q3 		$12.4M Buy
130,300
+91,700
+238% +$7.29M ﹤0.01% 2158
2025
Q2 		$2.9M Buy
38,600
+12,800
+50% +$727K ﹤0.01% 3813
2025
Q1 		$1.3M Buy
25,800
+16,500
+177% +$892K ﹤0.01% 5076
2024
Q4 		$503K Sell
9,300
-38,000
-80% -$2.13M ﹤0.01% 6777
2024
Q3 		$2.87M Buy
47,300
+26,300
+125% +$1.73M ﹤0.01% 3802
2024
Q2 		$1.7M Sell
21,000
-27,100
-56% -$2.12M ﹤0.01% 4777
2024
Q1 		$3.7M Sell
48,100
-184,100
-79% -$12.6M ﹤0.01% 3075
2023
Q4 		$14.2M Sell
232,200
-94,900
-29% -$5.43M ﹤0.01% 1583
2023
Q3 		$16.8M Buy
327,100
+143,700
+78% +$8.17M 0.01% 1255
2023
Q2 		$13.2M Buy
+183,400
New +$11.7M ﹤0.01% 1623
2022
Q4 		– Sell
-8,700
Closed -$567K – 10061
2022
Q3 		$567K Sell
8,700
-9,300
-52% -$729K ﹤0.01% 6459
2022
Q2 		$1.51M Buy
18,000
+9,100
+102% +$767K ﹤0.01% 4696
2022
Q1 		$595K Sell
8,900
-50,200
-85% -$3.91M ﹤0.01% 7145
2021
Q4 		$5.62M Buy
59,100
+14,700
+33% +$1.11M ﹤0.01% 2679
2021
Q3 		$3.06M Buy
44,400
+36,100
+435% +$2.55M ﹤0.01% 3608
2021
Q2 		$532K Buy
8,300
+1,200
+17% +$78.9K ﹤0.01% 7120
2021
Q1 		$422K Buy
7,100
+900
+15% +$51.2K ﹤0.01% 7100
2020
Q4 		$299K Sell
6,200
-9,500
-61% -$388K ﹤0.01% 6424
2020
Q3 		$593K Sell
15,700
-1,100
-7% -$44.1K ﹤0.01% 4898
2020
Q2 		$819K Buy
+16,800
New +$744K ﹤0.01% 4361
2016
Q3 		– Sell
-5,200
Closed -$249K – 4480
2016
Q2 		$249K Buy
+5,200
New +$218K ﹤0.01% 3527

Other funds holding SIMO

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
RP
Reinhart Partners Mequon, Wisconsin $4.38B AUM 55.55% 1-Year Est. Return
Acadian Asset Management
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
Lord, Abbett & Co Jersey City, New Jersey $30.6B AUM 57.44% 1-Year Est. Return
Lazard Asset Management
Lazard Asset Management New York $60.8B AUM 22.47% 1-Year Est. Return
Robeco Institutional Asset Management
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
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

Jane Street's SIMO Position: Q1 2026 in Review

Jane Street reduced its Silicon Motion (SIMO) stake by 54% in Q1 2026, selling an estimated $5.22M and leaving 36,410 shares worth $4.09M. The position accounts for ﹤0.01% of the portfolio, ranked #3811.

Jane Street first reported a position in SIMO in Q3 2013 and has held it in 28 quarters since. The position peaked at $14.5M in Q4 2023. 273 funds tracked by Wall St. Rank hold SIMO as of Q1 2026.

  • Jane Street held 36,410 shares of Silicon Motion worth $4.09M as of Q1 2026.
  • Jane Street sold 42,980 Silicon Motion shares in Q1 2026, an estimated $5.22M.
  • Silicon Motion made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #3811 holding.
  • Jane Street first reported a position in Silicon Motion in Q3 2013 and has held it in 28 quarters since.
  • Jane Street's Silicon Motion position peaked at $14.5M in Q4 2023.
  • 273 funds tracked by Wall St. Rank held Silicon Motion as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.