QUANTUM SI INC

Ticker: QSI CUSIP: 74765K105 Class: Common Stock

CITADEL ADVISORS LLC's Holding History (CIK: 0001423053)

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

Q4 2025
Shares 2,676,097 Value ($000) $2,944 Avg Close $1.63 Range $1.07 - $3.10
Q3 2025
Shares 407,047 Value ($000) $574 Avg Close $1.45 Range $0.95 - $2.18
Q2 2025
Shares 558,307 Value ($000) $1,094 Avg Close $1.48 Range $1.02 - $2.15
Q1 2025
Shares 138,498 Value ($000) $166 Avg Close $1.92 Range $1.12 - $5.77
Q3 2024
Shares 79,753 Value ($000) $70 Avg Close $0.97 Range $0.79 - $1.26
Q2 2024
Shares 226,300 Value ($000) $238 Avg Close $1.60 Range $0.73 - $1.99
Q1 2024
Shares 93,000 Value ($000) $183 Avg Close $1.75 Range $1.38 - $2.43
Q4 2023
Shares 125,130 Value ($000) $252 Avg Close $1.52 Range $1.12 - $2.31
Q2 2023
Shares 107,111 Value ($000) $192 Avg Close $1.57 Range $1.36 - $1.94
Q1 2023
Shares 30,633 Value ($000) $54 Avg Close $1.97 Range $1.54 - $2.63
Q4 2022
Shares 144,784 Value ($000) $265 Avg Close $2.58 Range $1.72 - $3.61
Q3 2022
Shares 166,130 Value ($000) $457 Avg Close $3.20 Range $2.31 - $4.43
Q2 2022
Shares 290,145 Value ($000) $673 Avg Close $3.83 Range $2.22 - $4.97
Q1 2022
Shares 41,685 Value ($000) $195 Avg Close $4.87 Range $3.72 - $8.30
Q4 2021
Shares 21,414 Value ($000) $168 Avg Close $7.53 Range $5.33 - $9.10
Q2 2021
Shares 867,703 Value ($000) $10,471 Avg Close $10.48 Range $7.85 - $13.23