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
Q2 		$72M Buy
216,100
+190,300
+738% +$44.1M 0.01% 1148
2026
Q1 		$2.9M Sell
25,800
-3,800
-13% -$461K ﹤0.01% 4409
2025
Q4 		$2.74M Sell
29,600
-3,900
-12% -$358K ﹤0.01% 4201
2025
Q3 		$3.18M Sell
33,500
-2,500
-7% -$199K ﹤0.01% 4127
2025
Q2 		$2.71M Buy
+36,000
New +$2.04M ﹤0.01% 3936
2025
Q1 		– Sell
-20,800
Closed -$1.12M – 10508
2024
Q4 		$1.12M Buy
20,800
+9,100
+78% +$510K ﹤0.01% 5148
2024
Q3 		$711K Buy
11,700
+8,900
+318% +$587K ﹤0.01% 6574
2024
Q2 		$227K Sell
2,800
-32,400
-92% -$2.53M ﹤0.01% 8213
2024
Q1 		$2.71M Buy
35,200
+18,100
+106% +$1.24M ﹤0.01% 3575
2023
Q4 		$1.05M Sell
17,100
-19,000
-53% -$1.09M ﹤0.01% 5492
2023
Q3 		$1.85M Sell
36,100
-258,600
-88% -$14.7M ﹤0.01% 4183
2023
Q2 		$21.2M Buy
294,700
+287,400
+3,937% +$18.4M 0.01% 1153
2023
Q1 		$478K Buy
+7,300
New +$479K ﹤0.01% 6396
2022
Q4 		– Sell
-7,900
Closed -$515K – 10062
2022
Q3 		$515K Sell
7,900
-3,200
-29% -$251K ﹤0.01% 6642
2022
Q2 		$929K Buy
11,100
+800
+8% +$67.4K ﹤0.01% 5619
2022
Q1 		$688K Sell
10,300
-8,000
-44% -$623K ﹤0.01% 6877
2021
Q4 		$1.74M Sell
18,300
-39,100
-68% -$2.95M ﹤0.01% 4755
2021
Q3 		$3.96M Sell
57,400
-166,400
-74% -$11.7M ﹤0.01% 3133
2021
Q2 		$14.3M Buy
223,800
+188,900
+541% +$12.4M 0.01% 1354
2021
Q1 		$2.07M Sell
34,900
-59,600
-63% -$3.39M ﹤0.01% 3947
2020
Q4 		$4.55M Buy
+94,500
New +$3.86M ﹤0.01% 2252

Other funds holding SIMO

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Alkeon Capital Management
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
RP
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
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

Jane Street's SIMO Position: Q2 2026 in Review

Jane Street sold out of Silicon Motion (SIMO) in Q2 2026, closing a stake of 36,410 shares — an estimated $8.44M sold.

Jane Street first reported a position in SIMO in Q3 2013 and held it in 28 quarters. The position peaked at $14.5M in Q4 2023. 385 funds tracked by Wall St. Rank hold SIMO as of Q2 2026.

  • Jane Street reported no remaining Silicon Motion position as of Q2 2026 after selling out during the quarter.
  • Jane Street sold 36,410 Silicon Motion shares in Q2 2026, an estimated $8.44M.
  • Jane Street first reported a position in Silicon Motion in Q3 2013 and held it in 28 quarters.
  • Jane Street's Silicon Motion position peaked at $14.5M in Q4 2023.
  • 385 funds tracked by Wall St. Rank held Silicon Motion as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.