Celgene (NASDAQ: CELG) March and April weekly call option implied volatility is at 12, April is at 41; compared to its 52-week range of 22 to 57 after CNBC's David Faber reported proxy advisory service ISS is expected to weigh in on the Bristol-Myers Squibb (NYSE: BMY)/Celgene CELG deal soon. Call put ratio 1 call to 5.8 puts with focus on April 80 and 85 puts.