iShares Nasdaq Biotechnology (IBB) puts after Biogen (BIIB) discontinues two Alzheimer's trials

iShares Nasdaq Biotechnology (NASDAQ: IBB) March weekly call option implied volatility is at 24, April is at 20; compared to its 52-week range of 15 to 40 after Biogen (BIIB) discontinues two Alzheimer's trials. Call put ratio 1 call to 3.3 puts with focus on June 100 puts.

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