Immucor (BLUD) shares are down $2.25 or 13.9% to $13.85 on news that the FDA might revoke the drug maker’s license (Link to story.) Option volume is 10x the daily average with a total of 6,505 puts traded to 2,080 calls (chart.) The notable transaction is a 1×2 calendar spread in which a sold 3,000 of the July $12.50 puts and bought 1,500 of the August $12.50 puts for what looks like an average of 5c debit. The position does well if BLUD drips lower over the next few weeks.