Yesterday, I read an article about reverse call calendar spreads. Anyone use this strategy? Your long call--do you use one with 60 days until expiration? Your short call--do you use one with 90 or 120 days to expiration? Do you have any trouble executing this spread at a fair price or are the bid/asks too wide and you have to hit the bid? This looks like a great spread--on paper--to take advantage of volatility spikes that then reverse into a volatility crunch and upward movement of the underlying. If you do place reverse calendar spreads, do you prefer using puts or calls?