It has a tendency to sell off at the end of the day it looks like.Van or Stoney, you think MULN will take out $2.50 by tomorrow? Every attack by the Sellers gets absorbed $2.1-$2.15 range. Call buying on options expiring makes no sense, paying .20-.30 on a $2.50 strike.
If you do buy them, I'd close them before 2:30 EST
On this much volume, you might want to buy some of the $2.50 puts for .45 here and keep those overnight. This thing has already traded 100X its float today. A lot of that call volume is new contracts selling into the bid.
The biggest trade is someone bought almost 1700 of the $2.50 puts for $0.51
I'd go with the puts.