RF
SIMO icon

Rossby Financial’s Silicon Motion SIMO Stock Holding History

Rossby Financial’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 		$702 Buy
6
+4
+200% +$485 ﹤0.01% 2053
2025
Q4 		$185 Hold
2
– – ﹤0.01% 1756
2025
Q3 		$195 Buy
+2
New +$159 ﹤0.01% 1446

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

Rossby Financial's SIMO Position: Q1 2026 in Review

Rossby Financial increased its Silicon Motion (SIMO) stake by 200% in Q1 2026, buying an estimated $485 and bringing the position to 6 shares worth $702. The position accounts for ﹤0.01% of the portfolio, ranked #2053.

Rossby Financial first reported a position in SIMO in Q3 2025 and has held it in 3 quarters since. 273 funds tracked by Wall St. Rank hold SIMO as of Q1 2026.

  • Rossby Financial held 6 shares of Silicon Motion worth $702 as of Q1 2026.
  • Rossby Financial bought 4 Silicon Motion shares in Q1 2026, an estimated $485.
  • Silicon Motion made up ﹤0.01% of Rossby Financial's portfolio in Q1 2026, its #2053 holding.
  • Rossby Financial first reported a position in Silicon Motion in Q3 2025 and has held it in 3 quarters since.
  • 273 funds tracked by Wall St. Rank held Silicon Motion as of Q1 2026.

Based on Rossby Financial's 13F filing for Q1 2026, filed 11 May 2026.