QUANTUM SI INC

Ticker: QSI CUSIP: 74765K105 Class: Common Stock

VANGUARD GROUP INC's Holding History (CIK: 0000102909)

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

Q4 2025
Shares 9,607,022 Value ($000) $10,568 Avg Close $1.63 Range $1.07 - $3.10
Q3 2025
Shares 8,714,507 Value ($000) $12,287 Avg Close $1.45 Range $0.95 - $2.18
Q2 2025
Shares 8,669,661 Value ($000) $16,993 Avg Close $1.48 Range $1.02 - $2.15
Q1 2025
Shares 6,892,862 Value ($000) $8,271 Avg Close $1.92 Range $1.12 - $5.77
Q4 2024
Shares 5,491,753 Value ($000) $14,828 Avg Close $1.17 Range $0.61 - $4.14
Q3 2024
Shares 5,037,258 Value ($000) $4,443 Avg Close $0.97 Range $0.79 - $1.26
Q2 2024
Shares 4,948,362 Value ($000) $5,196 Avg Close $1.60 Range $0.73 - $1.99
Q1 2024
Shares 5,300,685 Value ($000) $10,442 Avg Close $1.75 Range $1.38 - $2.43
Q4 2023
Shares 5,218,222 Value ($000) $10,489 Avg Close $1.52 Range $1.12 - $2.31
Q3 2023
Shares 5,165,196 Value ($000) $8,574 Avg Close $2.41 Range $1.57 - $3.90
Q2 2023
Shares 5,155,004 Value ($000) $9,227 Avg Close $1.57 Range $1.36 - $1.94
Q1 2023
Shares 5,123,558 Value ($000) $9,017 Avg Close $1.97 Range $1.54 - $2.63
Q4 2022
Shares 4,947,178 Value ($000) $9,053 Avg Close $2.58 Range $1.72 - $3.61
Q3 2022
Shares 4,920,922 Value ($000) $13,533 Avg Close $3.20 Range $2.31 - $4.43
Q2 2022
Shares 4,612,579 Value ($000) $10,701 Avg Close $3.83 Range $2.22 - $4.97
Q1 2022
Shares 3,934,007 Value ($000) $18,411 Avg Close $4.87 Range $3.72 - $8.30
Q4 2021
Shares 1,799,315 Value ($000) $14,161 Avg Close $7.53 Range $5.33 - $9.10
Q3 2021
Shares 1,533,603 Value ($000) $12,791 Avg Close $9.85 Range $7.43 - $14.17