PURA VIDA INVESTMENTS, LLC - IMMUNOGEN INC ownership

IMMUNOGEN INC's ticker is IMGN and the CUSIP is 45253H101. A total of 218 filers reported holding IMMUNOGEN INC in Q1 2022. The put-call ratio across all filers is 0.24 and the average weighting 0.1%.

Quarter-by-quarter ownership
PURA VIDA INVESTMENTS, LLC ownership history of IMMUNOGEN INC
ValueSharesWeighting
Q4 2022$248,000
-86.6%
50,000
-79.9%
0.01%
-80.6%
Q4 2021$1,850,000
-4.9%
249,283
-27.3%
0.07%
+13.6%
Q3 2021$1,945,000
-57.2%
343,048
-50.2%
0.06%
-58.2%
Q2 2021$4,541,000
-30.3%
689,049
-14.3%
0.14%
-24.2%
Q1 2021$6,514,000
+64.1%
804,192
+30.7%
0.19%
+29.2%
Q4 2020$3,969,000
+179.1%
615,286
+17.3%
0.14%
-28.7%
Q1 2019$1,422,000
-39.9%
524,600
+6.3%
0.20%
-57.3%
Q4 2018$2,368,000
+25.0%
493,400
+146.7%
0.47%
+18.8%
Q3 2018$1,894,000200,0000.40%
Other shareholders
IMMUNOGEN INC shareholders Q1 2022
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