QUANTUM SI INC

Ticker: QSI CUSIP: 74765K105 Class: Common Stock

Archer Investment Corp's Holding History (CIK: 0001803804)

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

Q4 2025
Shares 2,000 Value ($000) $2 Avg Close $1.63 Range $1.07 - $3.10
Q3 2025
Shares 2,000 Value ($000) $3 Avg Close $1.45 Range $0.95 - $2.18
Q2 2025
Shares 2,000 Value ($000) $4 Avg Close $1.48 Range $1.02 - $2.15
Q1 2025
Shares 2,000 Value ($000) $2 Avg Close $1.92 Range $1.12 - $5.77
Q4 2024
Shares 2,000 Value ($000) $5 Avg Close $1.17 Range $0.61 - $4.14
Q3 2024
Shares 2,000 Value ($000) $2 Avg Close $0.97 Range $0.79 - $1.26
Q2 2024
Shares 3,399 Value ($000) $4 Avg Close $1.60 Range $0.73 - $1.99
Q1 2024
Shares 1,399 Value ($000) $3 Avg Close $1.75 Range $1.38 - $2.43
Q4 2023
Shares 1,399 Value ($000) $3 Avg Close $1.52 Range $1.12 - $2.31
Q3 2023
Shares 1,399 Value ($000) $2 Avg Close $2.41 Range $1.57 - $3.90
Q2 2023
Shares 1,399 Value ($000) $3 Avg Close $1.57 Range $1.36 - $1.94