56,539 Jan $10 Call options, 18.5M total shares controlled thru $20.
There are 56,539 January Calls open at $10/share for ARNA.
There are a total of 166K open contracts with strike prices ranging from $5 to $15/share. That controls 16.6M shares, or $166M worth of ARNA stock.
It goes to 185,240 contracts if you include strike prices up through $20/share, to control 18.5M shares worth $185M.
Something big is about to happen. Good for longs as it is incredibly overweighted in the long's favor.
Yet this is still only about 1/3 of the shares shorted, so could be a way for the shorts to protect themselves without the short squeeze that would be caused by them covering and driving up the share price.