There ARE problems or risks with calendar spreads. When you put on a diagonal the risk is magnified because you have added the risk of a vertical to the equation. The max loss of the calendar is simply the debit paid, much harder to figure out your loss in the diagonal, a great deal depends on how you decide to adjust.
Calendar spreads DON'T like big fluctuations in vega. Ideally you want quiet upfront month to at least get a leg up then a rise in vega is fine. Calendars don't work very well on stocks with high volatility. Calendars are also market neutral in that they work best when you really don't have a strong directional bent.
Calendar spreads DON'T like big fluctuations in vega. Ideally you want quiet upfront month to at least get a leg up then a rise in vega is fine. Calendars don't work very well on stocks with high volatility. Calendars are also market neutral in that they work best when you really don't have a strong directional bent.