BROWN BROTHERS HARRIMAN & CO - IMMUNOGEN INC ownership

IMMUNOGEN INC's ticker is IMGN and the CUSIP is 45253H101. A total of 193 filers reported holding IMMUNOGEN INC in Q1 2023. The put-call ratio across all filers is 0.37 and the average weighting 0.1%.

Quarter-by-quarter ownership
BROWN BROTHERS HARRIMAN & CO ownership history of IMMUNOGEN INC
ValueSharesWeighting
Q3 2023$2,000
-15.9%
1260.0%0.00%
Q2 2023$2,378
+391.3%
1260.0%0.00%
Q1 2023$484
-22.6%
1260.0%0.00%
Q4 2022$625
-37.5%
1260.0%0.00%
Q3 2022$1,0000.0%1260.0%0.00%
Q2 2022$1,0000.0%126
-53.0%
0.00%
Q1 2022$1,000
-99.4%
268
-98.8%
0.00%
-100.0%
Q4 2021$169,000
+31.0%
22,7680.0%0.00%0.0%
Q3 2021$129,000
-14.0%
22,7680.0%0.00%0.0%
Q2 2021$150,000
-18.5%
22,7680.0%0.00%0.0%
Q1 2021$184,000
+12.9%
22,768
-9.9%
0.00%0.0%
Q4 2020$163,000
+16200.0%
25,268
+9088.4%
0.00%
Q1 2020$1,000275
+105.2%
0.00%
Q2 2019$0134
+36.7%
0.00%
Q1 2019$0
-100.0%
98
-30.5%
0.00%
Q3 2018$1,000141
+540.9%
0.00%
Q1 2014$0220.00%
Other shareholders
IMMUNOGEN INC shareholders Q1 2023
NameSharesValueWeighting ↓
Redmile Group, LLC 17,503,417$277,779,22813.22%
Fairmount Funds Management LLC 5,929,592$94,102,62511.32%
CM Management, LLC 500,000$7,935,0008.42%
SILVERARC CAPITAL MANAGEMENT, LLC 1,307,435$20,748,9936.29%
Altium Capital Management LP 725,000$11,505,7506.00%
RA Capital Management 13,322,288$211,424,7114.16%
TANG CAPITAL MANAGEMENT LLC 1,500,000$23,805,0003.36%
BRIDGER MANAGEMENT, LLC 467,220$7,414,7812.73%
Birchview Capital, LP 190,000$3,015,3002.57%
Boxer Capital, LLC 2,961,000$46,991,0702.50%
View complete list of IMMUNOGEN INC shareholders