InterMune, Inc (ITMN) is a biotechnology and medical research company focused on developing therapies for the treatment of lung conditions. The company’s stock is currently trading around $31.05 in a 52 week range of $8.21-$37.22. The stock is now higher by over 261% over the past 12 months with stock prices nearly doubling during today’s trading session. This large move higher was telegraphed by some unusual options activity earlier this month.On February 10th a trader sold 9,900 ITMN May 8 puts to buy 9,900 of the May 15 calls for a net debit of $2.78. With stock at $31.05 this spread is worth $16.05. At that level this trader profits over $15.8 million in this trade. This was the biggest trade in the past 10 days and did a good job of leading the move higher. The options action in ITMN and subsequent move higher in the stock is another great example of the value of reading the tape.