calendar straddles...?

Do any of you ever put on a calendar straddle... ie short the front-end put and call and then buy the back-end put and call? What are the risks here?
 
Quote from propslave:

Do any of you ever put on a calendar straddle... ie short the front-end put and call and then buy the back-end put and call? What are the risks here?


Biggest risks are

a) gigantic stock move and

b) significant decrease in IV

Mark
 
An atm long/short calendar will perform inside/outside the atm straddle range, or approx a sigma, provided there is a flat term-structure of volatility and no stock-specific vol anomalies. Of course, most traders treat them as binary event wagers.

ATM long calendars are generally a poor-proposition in a tight range as you're winning on gamma but losing on vega. You've bought the position at best-case, so I'd rather trade them directionally, as hedges, or neutral with some term-structure edge.
 
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