congrats, this is a big + for SGEN and also a + for IMGN. Shorts last hope for a negative event has just died. Now they will need to beg IMGN to issue them some shares to exit, or get crushed in the stampede.
Negative. Quality of the two companies was just highlighted. Big win for SGEN, yes. SGEN got 2 BLAs approved, while IMGN is now >1 year away from refiling after getting its Refuse to File for a poor quality submission.