QUANTUM SI INC

Ticker: QSI CUSIP: 74765K105 Class: Common Stock

Tower Research Capital LLC (TRC)'s Holding History (CIK: 0001533421)

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

Q4 2025
Shares 32,595 Value ($000) $36 Avg Close $1.63 Range $1.07 - $3.10
Q3 2025
Shares 14,661 Value ($000) $21 Avg Close $1.45 Range $0.95 - $2.18
Q2 2025
Shares 14,907 Value ($000) $29 Avg Close $1.48 Range $1.02 - $2.15
Q1 2025
Shares 21,026 Value ($000) $25 Avg Close $1.92 Range $1.12 - $5.77
Q4 2024
Shares 23,347 Value ($000) $63 Avg Close $1.17 Range $0.61 - $4.14
Q3 2024
Shares 9,755 Value ($000) $9 Avg Close $0.97 Range $0.79 - $1.26
Q2 2024
Shares 20,350 Value ($000) $21 Avg Close $1.60 Range $0.73 - $1.99
Q1 2024
Shares 16 Value ($000) $0 Avg Close $1.75 Range $1.38 - $2.43
Q4 2023
Shares 87,441 Value ($000) $176 Avg Close $1.52 Range $1.12 - $2.31
Q3 2023
Shares 25,867 Value ($000) $43 Avg Close $2.41 Range $1.57 - $3.90
Q2 2023
Shares 14,410 Value ($000) $26 Avg Close $1.57 Range $1.36 - $1.94
Q1 2023
Shares 33,033 Value ($000) $0 Avg Close $1.97 Range $1.54 - $2.63
Q4 2022
Shares 17,387 Value ($000) $0 Avg Close $2.58 Range $1.72 - $3.61
Q3 2022
Shares 11,312 Value ($000) $32 Avg Close $3.20 Range $2.31 - $4.43
Q2 2022
Shares 14,596 Value ($000) $34 Avg Close $3.83 Range $2.22 - $4.97
Q1 2022
Shares 29,825 Value ($000) $140 Avg Close $4.87 Range $3.72 - $8.30
Q4 2021
Shares 1,658 Value ($000) $13 Avg Close $7.53 Range $5.33 - $9.10
Q3 2021
Shares 28 Value ($000) $0 Avg Close $9.85 Range $7.43 - $14.17
Q2 2021
Shares 620 Value ($000) $8 Avg Close $10.48 Range $7.85 - $13.23