First reported at 485,000 shares this quarter.
Reported position value by quarter
Each bar is a Form 13-F quarter-end snapshot. It does not show trades made within the quarter.
| Date | Holding Value |
|---|---|
| 2022-03-31 | 4379000 |
| 2022-06-30 | 1260000 |
| 2022-09-30 | 0 |
| 2023-06-30 | 9151950 |
| 2023-09-30 | 11505750 |
| 2023-12-31 | 0 |
Quarterly position history
How this manager's reported quarter-end position changed over time.
| Quarter | Activity | Shares | Change | % of reported 13F | Reported value | Filed | Source filing |
|---|---|---|---|---|---|---|---|
| Q4 2023 | Reduced | 0 | -725,000 (-100.0%) | 0 | $0 | 2024-02-14 | |
| Q3 2023 | Added | 725,000 | +240,000 (49.5%) | 6.0% | $11,505,750 | 2023-11-14 | |
| Q2 2023 | New | 485,000 | +485,000 (0.0%) | 6.93% | $9,151,950 | 2023-08-14 | |
| Q3 2022 | Reduced | 0 | -280,000 (-100.0%) | 0 | $0 | 2022-11-14 | |
| Q2 2022 | Reduced | 280,000 | -640,000 (-69.6%) | 0.5% | $1,260,000 | 2022-08-15 | |
| Q1 2022 | New | 920,000 | +920,000 (0.0%) | 1.47% | $4,379,000 | 2022-05-16 |
Who else reported the position
294 managers reported IMMUNOGEN INC for Q2 2023.
| Manager | Activity | Shares | Change | % of reported 13F | Reported value | Tenure |
|---|---|---|---|---|---|---|
| BlackRock Inc | Added | 20,904,986 | +2,908,657 | 0.01% | $394,477,085 | 41 qtrs |
| VANGUARD GROUP INC | Added | 20,899,026 | +5,930,704 | < 0.01% | $394,364,621 | 41 qtrs |
| Redmile Group LLC | Added | 17,730,417 | +9,684,200 | 12.84% | $334,572,969 | 26 qtrs |
| JANUS HENDERSON GROUP PLC | Reduced | 15,499,788 | -950,293 | 0.18% | $292,387,206 | 8 qtrs |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | 9,752,899 | -111,886 | 0.03% | $184,037,203 | 24 qtrs |
| Point72 Asset Management L P | New | 8,712,142 | +8,712,142 | 0.49% | $164,398,120 | 1 qtr |
| STATE STREET CORPORATION | Reduced | 7,938,914 | -9,138,044 | < 0.01% | $149,807,307 | 41 qtrs |
| D E Shaw & Co Inc | New | 6,280,516 | +6,280,516 | 0.12% | $118,513,337 | 18 qtrs |
| Fairmount Funds Management LLC | New | 6,029,592 | +6,029,592 | 16.04% | $113,778,401 | 1 qtr |
| FMR LLC | Added | 5,612,742 | +4,413,468 | < 0.01% | $105,912,442 | 15 qtrs |
Filing details and methodology As reported
- Report period
- June 30, 2023
- Filed
- August 14, 2023
- Filing type
- 13F-HR
- Position type
- COM
Voting authority reported
- Sole
- 485,000
- Shared
- 0
- None
- 0
“None” means the manager reported no voting authority for those shares on non-routine matters. It does not disclose why and is not evidence of securities lending.
Form 13-F is a delayed quarter-end snapshot of disclosed long Section 13(f) securities. It can be filed up to 45 days after quarter end, excludes short positions and most non-U.S. securities, and does not reveal intra-quarter trading. For options, reported shares and value describe the underlying-share exposure; strike, expiry, premium, and written positions are not disclosed.