2,131 March 16 calls traded so far today. I guess if you believe SC Herceptin will be approved soon in US, and there will be a filing for SC Darzalex and maybe positive results from the PEGPH20 phase 3 trial within 6 months, you'll want to accumulate at these levels.
Perhaps the option buyer knew about this new Enhanze collaboration. It's not a transformative deal but an additional $30M in the bank for HALO is nothing to sneeze at and it makes further dilution less likely.
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