Thompson Siegel & Walmsley
OSS icon

Thompson Siegel & Walmsley’s One Stop Systems OSS Stock Holding History

Thompson Siegel & Walmsley’s Portfolio OSS Stock Details OSS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$578K Sell
31,788
-65,175
-67% -$907K 0.01% 351
2026
Q1 		$734K Sell
96,963
-56,161
-37% -$524K 0.01% 334
2025
Q4 		$1.1M Sell
153,124
-46,876
-23% -$277K 0.02% 307
2025
Q3 		$1.07M Buy
+200,000
New +$1.09M 0.02% 309

Other funds holding OSS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Jane Street
Jane Street New York $1.21T AUM 78.12% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
BA
Bard Associates Chicago, Illinois $451M AUM 66.6% 1-Year Est. Return
PIP
Palisades Investment Partners Santa Monica, California $352M AUM 76.79% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT) London, United Kingdom $108B AUM 37.29% 1-Year Est. Return

Thompson Siegel & Walmsley's OSS Position: Q2 2026 in Review

Thompson Siegel & Walmsley reduced its One Stop Systems (OSS) stake by 67% in Q2 2026, selling an estimated $907K and leaving 31,788 shares worth $578K. The position accounts for 0.01% of the portfolio, ranked #351.

Thompson Siegel & Walmsley first reported a position in OSS in Q3 2025 and has held it in 4 quarters since. The position peaked at $1.1M in Q4 2025. 108 funds tracked by Wall St. Rank hold OSS as of Q2 2026.

  • Thompson Siegel & Walmsley held 31,788 shares of One Stop Systems worth $578K as of Q2 2026.
  • Thompson Siegel & Walmsley sold 65,175 One Stop Systems shares in Q2 2026, an estimated $907K.
  • One Stop Systems made up 0.01% of Thompson Siegel & Walmsley's portfolio in Q2 2026, its #351 holding.
  • Thompson Siegel & Walmsley first reported a position in One Stop Systems in Q3 2025 and has held it in 4 quarters since.
  • Thompson Siegel & Walmsley's One Stop Systems position peaked at $1.1M in Q4 2025.
  • 108 funds tracked by Wall St. Rank held One Stop Systems as of Q2 2026.

Based on Thompson Siegel & Walmsley's 13F filing for Q2 2026, filed 11 Aug 2026.