Open interest is heavily skewed to calls rather than puts, by a ratio of 1.55 to 1 (this ratio was 1.4 prior to Facebook's last earnings report). The activity over the last month has favored calls to puts by a ratio of 2.25 to 1. The Nov15 65, 70 and 75 calls all have open interest over 60,000, and the Jan14 60 and 65 call lines both have open interest over 70,000. The Jan15 22 puts and the Jan15 32 calls both have over 80,000 of open interest (traded as a strangle).
2020? I say 1Q 2014
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