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XTX Topco’s One Stop Systems OSS Stock Holding History

XTX Topco’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
Q1 		$385K Sell
50,862
-3,944
-7% -$36.8K 0.01% 2265
2025
Q4 		$394K Sell
54,806
-17,308
-24% -$102K 0.01% 1824
2025
Q3 		$387K Buy
+72,114
New +$395K 0.02% 1293
2025
Q1 		– Sell
-10,878
Closed -$36.4K – 2914
2024
Q4 		$36.4K Buy
+10,878
New +$27.6K ﹤0.01% 1948

Other funds holding OSS

VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Jane Street
Jane Street New York $777B AUM 61.18% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
BA
Bard Associates Chicago, Illinois $398M AUM 54.32% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $100B AUM 35.1% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $666B AUM 30.12% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

XTX Topco's OSS Position: Q1 2026 in Review

XTX Topco reduced its One Stop Systems (OSS) stake by 7.2% in Q1 2026, selling an estimated $36.8K and leaving 50,862 shares worth $385K. The position accounts for 0.01% of the portfolio, ranked #2265.

XTX Topco first reported a position in OSS in Q4 2024 and has held it in 4 quarters since. The position peaked at $394K in Q4 2025. 77 funds tracked by Wall St. Rank hold OSS as of Q1 2026.

  • XTX Topco held 50,862 shares of One Stop Systems worth $385K as of Q1 2026.
  • XTX Topco sold 3,944 One Stop Systems shares in Q1 2026, an estimated $36.8K.
  • One Stop Systems made up 0.01% of XTX Topco's portfolio in Q1 2026, its #2265 holding.
  • XTX Topco first reported a position in One Stop Systems in Q4 2024 and has held it in 4 quarters since.
  • XTX Topco's One Stop Systems position peaked at $394K in Q4 2025.
  • 77 funds tracked by Wall St. Rank held One Stop Systems as of Q1 2026.

Based on XTX Topco's 13F filing for Q1 2026, filed 15 May 2026.