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Quantum Si shares owned by Group One Trading

Quarter-by-quarter ownership of Quantum Si (QSI) shares owned by Group One Trading from 13F filings

Historical chart of Group One Trading investment in Quantum Si

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All positions including Quantum Si held by Group One Trading consolidated in one spreadsheet with up to 7 years of data

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Quarterly reported holdings in Quantum Si by Group One Trading

Quarter filed Position value Share count Share price at filing
2025-09-30 $533k 378k 1.41
2025-06-30 $264k 135k 1.96
2023-06-30 $5.6k 3.2k 1.79
2023-03-31 $2.7k 1.6k 1.76
2021-06-30 $337k 28k 12.25