QUANTUM SI INC

Ticker: QSI CUSIP: 74765K105 Class: Common Stock

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

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

Q4 2025
Shares 9,661 Value ($000) $11 Avg Close $1.63 Range $1.07 - $3.10
Q3 2025
Shares 8,807 Value ($000) $12 Avg Close $1.45 Range $0.95 - $2.18
Q2 2025
Shares 8,801 Value ($000) $17 Avg Close $1.48 Range $1.02 - $2.15
Q1 2025
Shares 7,257 Value ($000) $9 Avg Close $1.92 Range $1.12 - $5.77
Q4 2024
Shares 7,257 Value ($000) $20 Avg Close $1.17 Range $0.61 - $4.14
Q3 2024
Shares 7,257 Value ($000) $6 Avg Close $0.97 Range $0.79 - $1.26
Q2 2024
Shares 7,257 Value ($000) $8 Avg Close $1.60 Range $0.73 - $1.99
Q1 2024
Shares 10,230 Value ($000) $20 Avg Close $1.75 Range $1.38 - $2.43
Q4 2023
Shares 16,747 Value ($000) $34 Avg Close $1.52 Range $1.12 - $2.31
Q3 2023
Shares 22,450 Value ($000) $37 Avg Close $2.41 Range $1.57 - $3.90
Q2 2023
Shares 33,415 Value ($000) $60 Avg Close $1.57 Range $1.36 - $1.94
Q1 2023
Shares 33,959 Value ($000) $60 Avg Close $1.97 Range $1.54 - $2.63
Q4 2022
Shares 109,039 Value ($000) $200 Avg Close $2.58 Range $1.72 - $3.61
Q3 2022
Shares 107,744 Value ($000) $296 Avg Close $3.20 Range $2.31 - $4.43
Q2 2022
Shares 108,549 Value ($000) $252 Avg Close $3.83 Range $2.22 - $4.97
Q1 2022
Shares 69,618 Value ($000) $326 Avg Close $4.87 Range $3.72 - $8.30
Q4 2021
Shares 68,851 Value ($000) $542 Avg Close $7.53 Range $5.33 - $9.10