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GAMCO Investors’s Silicon Motion SIMO Stock Holding History

GAMCO Investors’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 		– Sell
-18,560
Closed -$1.72M – 1062
2025
Q4 		$1.72M Sell
18,560
-4,029
-18% -$370K 0.02% 561
2025
Q3 		$2.14M Sell
22,589
-3,639
-14% -$289K 0.02% 508
2025
Q2 		$1.97M Buy
+26,228
New +$1.49M 0.02% 535
2024
Q3 		– Sell
-3,062
Closed -$248K – 889
2024
Q2 		$248K Sell
3,062
-1,200
-28% -$93.7K ﹤0.01% 796
2024
Q1 		$328K Sell
4,262
-750
-15% -$51.2K ﹤0.01% 745
2023
Q4 		$307K Buy
5,012
+950
+23% +$54.3K ﹤0.01% 758
2023
Q3 		$208K Buy
+4,062
New +$231K ﹤0.01% 798

Other funds holding SIMO

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
RP
Reinhart Partners Mequon, Wisconsin $4.11B AUM 38.38% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
HRCM
Hawk Ridge Capital Management Los Angeles, California $3.12B AUM 53.42% 1-Year Est. Return
Lord, Abbett & Co
Lord, Abbett & Co Jersey City, New Jersey $34.9B AUM 72.7% 1-Year Est. Return
Lazard Asset Management
Lazard Asset Management New York $66.1B AUM 33.53% 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 $1.2B AUM 137.35% 1-Year Est. Return
Man Group
Man Group London, United Kingdom $62.7B AUM 29.77% 1-Year Est. Return
ACM
Analog Century Management New York $2.73B AUM 298.81% 1-Year Est. Return

GAMCO Investors's SIMO Position: Q1 2026 in Review

GAMCO Investors sold out of Silicon Motion (SIMO) in Q1 2026, closing a stake of 18,560 shares — an estimated $1.72M sold.

GAMCO Investors first reported a position in SIMO in Q3 2023 and held it in 7 quarters. The position peaked at $2.14M in Q3 2025. 274 funds tracked by Wall St. Rank hold SIMO as of Q1 2026.

  • GAMCO Investors reported no remaining Silicon Motion position as of Q1 2026 after selling out during the quarter.
  • GAMCO Investors sold 18,560 Silicon Motion shares in Q1 2026, an estimated $1.72M.
  • GAMCO Investors first reported a position in Silicon Motion in Q3 2023 and held it in 7 quarters.
  • GAMCO Investors's Silicon Motion position peaked at $2.14M in Q3 2025.
  • 274 funds tracked by Wall St. Rank held Silicon Motion as of Q1 2026.

Based on GAMCO Investors's 13F filing for Q1 2026, filed 14 May 2026.