QUANTUM SI INC

Ticker: QSI CUSIP: 74765K105 Class: Common Stock

Shay Capital LLC's Holding History (CIK: 0001723643)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025
Shares 149,132 Value ($000) $164 Avg Close $1.63 Range $1.07 - $3.10
Q3 2025
Shares 154,572 Value ($000) $218 Avg Close $1.45 Range $0.95 - $2.18
Q2 2025
Shares 129,631 Value ($000) $254 Avg Close $1.48 Range $1.02 - $2.15
Q1 2025
Shares 128,500 Value ($000) $154 Avg Close $1.92 Range $1.12 - $5.77
Q4 2024
Shares 216,546 Value ($000) $585 Avg Close $1.17 Range $0.61 - $4.14
Q3 2024
Shares 138,170 Value ($000) $122 Avg Close $0.97 Range $0.79 - $1.26
Q2 2024
Shares 138,260 Value ($000) $145 Avg Close $1.60 Range $0.73 - $1.99
Q1 2024
Shares 25,662 Value ($000) $51 Avg Close $1.75 Range $1.38 - $2.43
Q4 2023
Shares 29,338 Value ($000) $59 Avg Close $1.52 Range $1.12 - $2.31
Q3 2023
Shares 19,537 Value ($000) $32 Avg Close $2.41 Range $1.57 - $3.90
Q2 2023
Shares 83,698 Value ($000) $150 Avg Close $1.57 Range $1.36 - $1.94
Q2 2022
Shares 65,879 Value ($000) $153 Avg Close $3.83 Range $2.22 - $4.97