QUANTUM SI INC

Ticker: QSI CUSIP: 74765K105 Class: Common Stock

RHUMBLINE ADVISERS's Holding History (CIK: 0001115418)

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

Q4 2025
Shares 193,595 Value ($000) $213 Avg Close $1.63 Range $1.07 - $3.10
Q3 2025
Shares 219,965 Value ($000) $310 Avg Close $1.45 Range $0.95 - $2.18
Q2 2025
Shares 203,967 Value ($000) $400 Avg Close $1.48 Range $1.02 - $2.15
Q1 2025
Shares 149,973 Value ($000) $180 Avg Close $1.92 Range $1.12 - $5.77
Q4 2024
Shares 148,946 Value ($000) $402 Avg Close $1.17 Range $0.61 - $4.14
Q3 2024
Shares 143,648 Value ($000) $127 Avg Close $0.97 Range $0.79 - $1.26
Q2 2024
Shares 145,199 Value ($000) $152 Avg Close $1.60 Range $0.73 - $1.99
Q1 2024
Shares 144,734 Value ($000) $285 Avg Close $1.75 Range $1.38 - $2.43
Q4 2023
Shares 140,771 Value ($000) $283 Avg Close $1.52 Range $1.12 - $2.31
Q3 2023
Shares 142,840 Value ($000) $237 Avg Close $2.41 Range $1.57 - $3.90
Q2 2023
Shares 138,752 Value ($000) $248 Avg Close $1.57 Range $1.36 - $1.94
Q1 2023
Shares 136,422 Value ($000) $0 Avg Close $1.97 Range $1.54 - $2.63
Q4 2022
Shares 134,614 Value ($000) $0 Avg Close $2.58 Range $1.72 - $3.61
Q3 2022
Shares 132,596 Value ($000) $365 Avg Close $3.20 Range $2.31 - $4.43
Q2 2022
Shares 125,093 Value ($000) $290 Avg Close $3.83 Range $2.22 - $4.97