BERKSHIRE ASSET MANAGEMENT LLC/PA - IMMUNOGEN INC ownership

IMMUNOGEN INC's ticker is IMGN and the CUSIP is 45253H101. A total of 221 filers reported holding IMMUNOGEN INC in Q3 2021. The put-call ratio across all filers is 0.30 and the average weighting 0.1%.

Quarter-by-quarter ownership
BERKSHIRE ASSET MANAGEMENT LLC/PA ownership history of IMMUNOGEN INC
ValueSharesWeighting
Q1 2022$51,000
-37.0%
10,773
-1.5%
0.00%
-40.0%
Q4 2021$81,000
+22.7%
10,934
-5.4%
0.01%
+25.0%
Q3 2021$66,000
-14.3%
11,556
-1.4%
0.00%
-20.0%
Q2 2021$77,000
-18.1%
11,719
+1.4%
0.01%
-28.6%
Q1 2021$94,000
+17.5%
11,556
-6.8%
0.01%
+16.7%
Q4 2020$80,000
+100.0%
12,397
+4.5%
0.01%
+50.0%
Q1 2020$40,00011,8620.00%
Other shareholders
IMMUNOGEN INC shareholders Q3 2021
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