Simplex Trading
OSS icon

Simplex Trading’s One Stop Systems OSS Stock Holding History

Simplex Trading’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 		$28K Buy
3,700
+1,500
+68% +$14K ﹤0.01% 6457
2025
Q4 		$15.8K Sell
2,200
-2,900
-57% -$17.1K ﹤0.01% 6679
2025
Q3 		$27K Buy
5,100
+3,300
+183% +$18.1K ﹤0.01% 7079
2025
Q2 		$6K Buy
1,800
+100
+6% +$279 ﹤0.01% 7664
2025
Q1 		$3K Sell
1,700
-10,700
-86% -$35.8K ﹤0.01% 7855
2024
Q4 		$41K Buy
12,400
+8,900
+254% +$22.6K ﹤0.01% 6081
2024
Q3 		$8K Buy
3,500
+2,900
+483% +$6.42K ﹤0.01% 7353
2024
Q2 		$1K Buy
+600
New +$1.6K ﹤0.01% 8518
2022
Q3 		– Sell
-18,900
Closed -$74K – 10622
2022
Q2 		$74K Sell
18,900
-8,800
-32% -$37.5K ﹤0.01% 5972
2022
Q1 		$105K Buy
27,700
+18,200
+192% +$75.6K ﹤0.01% 6064
2021
Q4 		$47K Buy
9,500
+8,500
+850% +$42.6K ﹤0.01% 7339
2021
Q3 		$5K Hold
1,000
– – ﹤0.01% 9281
2021
Q2 		$5K Buy
+1,000
New +$5.65K ﹤0.01% 9466

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

Simplex Trading's OSS Position: Q1 2026 in Review

Simplex Trading sold out of One Stop Systems (OSS) in Q1 2026, closing a stake of 4,058 shares — an estimated $37.8K sold.

Simplex Trading first reported a position in OSS in Q4 2021 and held it in 13 quarters. The position peaked at $83K in Q4 2024. 77 funds tracked by Wall St. Rank hold OSS as of Q1 2026.

  • Simplex Trading reported no remaining One Stop Systems position as of Q1 2026 after selling out during the quarter.
  • Simplex Trading sold 4,058 One Stop Systems shares in Q1 2026, an estimated $37.8K.
  • Simplex Trading first reported a position in One Stop Systems in Q4 2021 and held it in 13 quarters.
  • Simplex Trading's One Stop Systems position peaked at $83K in Q4 2024.
  • 77 funds tracked by Wall St. Rank held One Stop Systems as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.