Marshall Wace
SIMO icon

Marshall Wace’s Silicon Motion SIMO Stock Holding History

Marshall Wace’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 		$31.1M Buy
276,600
+143,949
+109% +$17.5M 0.03% 544
2025
Q4 		$12.3M Buy
132,651
+77,246
+139% +$7.09M 0.01% 800
2025
Q3 		$5.25M Buy
55,405
+12,944
+30% +$1.03M 0.01% 1166
2025
Q2 		$3.19M Sell
42,461
-2,359
-5% -$134K ﹤0.01% 1345
2025
Q1 		$2.27M Sell
44,820
-3,847
-8% -$208K ﹤0.01% 1418
2024
Q4 		$2.63M Sell
48,667
-67,627
-58% -$3.79M ﹤0.01% 1330
2024
Q3 		$7.06M Buy
116,294
+25,977
+29% +$1.71M 0.01% 879
2024
Q2 		$7.31M Sell
90,317
-15,252
-14% -$1.19M 0.01% 854
2024
Q1 		$8.12M Sell
105,569
-204,462
-66% -$14M 0.01% 818
2023
Q4 		$19M Sell
310,031
-287,230
-48% -$16.4M 0.03% 493
2023
Q3 		$30.6M Buy
597,261
+184,178
+45% +$10.5M 0.06% 315
2023
Q2 		$29.7M Sell
413,083
-219,438
-35% -$14M 0.06% 348
2023
Q1 		$41.4M Buy
632,521
+231,332
+58% +$15.2M 0.09% 254
2022
Q4 		$26.1M Buy
401,189
+18,781
+5% +$1.15M 0.06% 366
2022
Q3 		$24.9M Buy
382,408
+318,598
+499% +$25M 0.05% 385
2022
Q2 		$5.34M Sell
63,810
-525,840
-89% -$44.3M 0.01% 1288
2022
Q1 		$39.4M Buy
589,650
+330,608
+128% +$25.8M 0.07% 291
2021
Q4 		$24.6M Buy
+259,042
New +$19.5M 0.05% 418
2021
Q2 		– Sell
-150,411
Closed -$8.93M – 3044
2021
Q1 		$8.93M Sell
150,411
-60,558
-29% -$3.45M 0.04% 515
2020
Q4 		$10.2M Buy
210,969
+18,381
+10% +$751K 0.06% 345
2020
Q3 		$7.28M Sell
192,588
-22,165
-10% -$888K 0.05% 396
2020
Q2 		$10.5M Buy
214,753
+192,126
+849% +$8.51M 0.07% 271
2020
Q1 		$830K Buy
22,627
+8,415
+59% +$363K 0.01% 848
2019
Q4 		$721K Sell
14,212
-104,714
-88% -$4.49M 0.01% 1058
2019
Q3 		$4.2M Buy
118,926
+101,753
+593% +$3.69M 0.03% 549
2019
Q2 		$762K Sell
17,173
-80,995
-83% -$3.25M 0.01% 995
2019
Q1 		$3.89M Sell
98,168
-43,472
-31% -$1.69M 0.04% 547
2018
Q4 		$4.89M Buy
+141,640
New +$5.54M 0.05% 445
2017
Q1 		– Sell
-287,957
Closed -$12.2M – 697
2016
Q4 		$12.2M Buy
+287,957
New +$13.1M 0.08% 284
2016
Q1 		– Sell
-115,747
Closed -$3.63M – 1180
2015
Q4 		$3.63M Sell
115,747
-172,340
-60% -$5.4M 0.03% 448
2015
Q3 		$7.87M Buy
+288,087
New +$7.71M 0.1% 215
2015
Q2 		– Sell
-35,990
Closed -$967K – 1032
2015
Q1 		$967K Buy
35,990
+15,156
+73% +$414K 0.01% 585
2014
Q4 		$493K Buy
+20,834
New +$500K 0.01% 660
2014
Q3 		– Sell
-124,302
Closed -$2.54M – 1022
2014
Q2 		$2.54M Sell
124,302
-51,923
-29% -$884K 0.04% 360
2014
Q1 		$2.96M Buy
+176,225
New +$2.84M 0.05% 300

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

Marshall Wace's SIMO Position: Q1 2026 in Review

Marshall Wace increased its Silicon Motion (SIMO) stake by 109% in Q1 2026, buying an estimated $17.5M and bringing the position to 276,600 shares worth $31.1M. The position accounts for 0.03% of the portfolio, ranked #544.

Marshall Wace first reported a position in SIMO in Q1 2014 and has held it in 35 quarters since. The position peaked at $41.4M in Q1 2023. 273 funds tracked by Wall St. Rank hold SIMO as of Q1 2026.

  • Marshall Wace held 276,600 shares of Silicon Motion worth $31.1M as of Q1 2026.
  • Marshall Wace bought 143,949 Silicon Motion shares in Q1 2026, an estimated $17.5M.
  • Silicon Motion made up 0.03% of Marshall Wace's portfolio in Q1 2026, its #544 holding.
  • Marshall Wace first reported a position in Silicon Motion in Q1 2014 and has held it in 35 quarters since.
  • Marshall Wace's Silicon Motion position peaked at $41.4M in Q1 2023.
  • 273 funds tracked by Wall St. Rank held Silicon Motion as of Q1 2026.

Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.