IMMUNOGEN INC

CUSIP: 45253H101 Class: Common Stock

PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO's Holding History (CIK: 0000315297)

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

Q4 2023
Shares 29,985 Value ($000) $1 Avg Close Range
Q3 2023
Shares 32,160 Value ($000) $1 Avg Close Range
Q2 2023
Shares 34,937 Value ($000) $1 Avg Close Range
Q1 2023
Shares 34,937 Value ($000) $0 Avg Close Range
Q4 2022
Shares 34,937 Value ($000) $0 Avg Close Range
Q3 2022
Shares 34,937 Value ($000) $167 Avg Close Range
Q2 2022
Shares 34,937 Value ($000) $157 Avg Close Range
Q1 2022
Shares 34,937 Value ($000) $166 Avg Close Range
Q4 2021
Shares 34,937 Value ($000) $259 Avg Close Range
Q3 2021
Shares 34,937 Value ($000) $198 Avg Close Range
Q2 2021
Shares 34,937 Value ($000) $230 Avg Close Range
Q1 2021
Shares 34,937 Value ($000) $283 Avg Close Range
Q4 2020
Shares 34,937 Value ($000) $225 Avg Close Range
Q3 2020
Shares 34,937 Value ($000) $126 Avg Close Range
Q2 2020
Shares 34,937 Value ($000) $161 Avg Close Range
Q1 2020
Shares 34,937 Value ($000) $119 Avg Close Range
Q4 2019
Shares 19,585 Value ($000) $100 Avg Close Range
Q3 2019
Shares 19,585 Value ($000) $47 Avg Close Range
Q2 2019
Shares 19,585 Value ($000) $42 Avg Close Range
Q1 2019
Shares 19,585 Value ($000) $53 Avg Close Range
Q4 2018
Shares 19,585 Value ($000) $94 Avg Close Range
Q3 2018
Shares 19,585 Value ($000) $185 Avg Close Range