Simplex Trading
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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
Q3 		$280K Sell
32,100
-50,500
-61% -$590K ﹤0.01% 4243
2026
Q2 		$1.5M Sell
82,600
-14,400
-15% -$200K ﹤0.01% 2323
2026
Q1 		$734K Buy
97,000
+84,900
+702% +$792K ﹤0.01% 2827
2025
Q4 		$86.9K Sell
12,100
-6,000
-33% -$35.5K ﹤0.01% 5140
2025
Q3 		$97K Buy
18,100
+15,400
+570% +$84.3K ﹤0.01% 5781
2025
Q2 		$9K Buy
2,700
+200
+8% +$558 ﹤0.01% 7404
2025
Q1 		$5K Buy
2,500
+500
+25% +$1.68K ﹤0.01% 7573
2024
Q4 		$6K Buy
2,000
+200
+11% +$508 ﹤0.01% 7519
2024
Q3 		$4K Sell
1,800
-23,800
-93% -$52.7K ﹤0.01% 7755
2024
Q2 		$61K Sell
25,600
-6,700
-21% -$17.8K ﹤0.01% 5872
2024
Q1 		$105K Buy
32,300
+30,100
+1,368% +$82.2K ﹤0.01% 5523
2023
Q4 		$4K Sell
2,200
-13,600
-86% -$27.3K ﹤0.01% 7991
2023
Q3 		$29K Buy
15,800
+14,700
+1,336% +$34.2K ﹤0.01% 6289
2023
Q2 		$3K Sell
1,100
-900
-45% -$2.38K ﹤0.01% 8256
2023
Q1 		$4K Buy
2,000
+500
+33% +$1.5K ﹤0.01% 8205
2022
Q4 		$4K Hold
1,500
– – ﹤0.01% 8239
2022
Q3 		$4K Buy
1,500
+500
+50% +$1.9K ﹤0.01% 8944
2022
Q2 		$3K Sell
1,000
-1,800
-64% -$7.67K ﹤0.01% 9181
2022
Q1 		$10K Buy
2,800
+800
+40% +$3.32K ﹤0.01% 8879
2021
Q4 		$9K Sell
2,000
-4,000
-67% -$20.1K ﹤0.01% 9133
2021
Q3 		$33K Hold
6,000
– – ﹤0.01% 8004
2021
Q2 		$34K Buy
+6,000
New +$33.9K ﹤0.01% 8115

Other funds holding OSS

Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.76T AUM
Qube Research & Technologies (QRT)
Qube Research & Technologies (QRT) London, United Kingdom $123B AUM 30.05% 1-Year Est. Return
PIP
Palisades Investment Partners Santa Monica, California $344M AUM 44.86% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Bard Associates
Bard Associates Chicago, Illinois $431M AUM 30.93% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $73.4B AUM 32.8% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
Jane Street
Jane Street New York $1.19T AUM 51.51% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.21T AUM
UBS Group
UBS Group Zurich, Switzerland $765B AUM 28.39% 1-Year Est. Return

Simplex Trading's OSS Position: Q3 2026 in Review

Simplex Trading opened a new position in One Stop Systems (OSS) in Q3 2026: 496 shares worth $4.33K. The stake represents ﹤0.01% of the portfolio and ranks #8191 among its holdings. This is a return to the name: Simplex Trading previously reported a position in OSS as recently as Q4 2025.

Simplex Trading first reported a position in OSS in Q4 2021 and has held it in 14 quarters since. The position peaked at $83K in Q4 2024. 70 funds tracked by Wall St. Rank hold OSS as of Q3 2026.

  • Simplex Trading held 496 shares of One Stop Systems worth $4.33K as of Q3 2026.
  • One Stop Systems was a new Simplex Trading position in Q3 2026.
  • One Stop Systems made up ﹤0.01% of Simplex Trading's portfolio in Q3 2026, its #8191 holding.
  • Simplex Trading first reported a position in One Stop Systems in Q4 2021 and has held it in 14 quarters since.
  • Simplex Trading's One Stop Systems position peaked at $83K in Q4 2024.
  • 70 funds tracked by Wall St. Rank held One Stop Systems as of Q3 2026.

Based on Simplex Trading's 13F filing for Q3 2026, filed 4 Nov 2026.