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SIMPLEX TRADING, LLC
> OSS
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 06/30/2023 | ONE STOP SYSTEMS, INC. | OSS | 9,467 | 1,589 | 27,000 | -4,000 | $2.85 |
| 06/30/2022 | ONE STOP SYSTEMS, INC. | OSS | 7,878 | -5,876 | 31,000 | -21,000 | $3.94 |
| 03/31/2022 | ONE STOP SYSTEMS, INC. | OSS | 13,754 | 9,678 | 52,000 | 32,000 | $3.78 |
| 12/31/2021 | ONE STOP SYSTEMS, INC. | OSS | 4,076 | 4,076 | 20,000 | 20,000 | $4.91 |
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