Interesting. Today's option activity broke an AMRN record. Avafin:
"NEW YORK (AVAFIN) 11/30/12 -- Trading of Amarin Corporation options resulted in establishing a new 90-day call volume record, where 14,646 call contracts exchanged hands between the buyers and the sellers. A total of 3,806 put and 14,646 call contracts was traded raising a 0.26 put/call ratio on shares of AMRN..."