MoMoney,
Couple of clarifications:
"When you're that far out (in time), I would suggest it's more of a vega play."
-- I don't completely follow this (but I get the point about VIX being so low). Why would it be more of a vega play than a 30-day JAN spread plus later, a 30-day FEB spread?
"Are you planning on holding for only 30 days? In which case the positions will not gain much from time decay."
-- THe Jan spread was, say $1. I found the Feb spread to be $2. That tells me the theta decay across the two months are equal (bizarre, I know, since theta decay is supposed to be exponentially more during the last 30 days, but that is what I found). So, holding for the first 30 days out of the 60 days should net me 1/2 of the total theta decay....
"If you're planning to hold till near expiration then the range of probable finishing prices is twice as large (roughly) as a 30 day spread, so you really do need to start out twice as far OTM to get the same probability characteristics...unless you're not bothered by that and base strike selection on support/resistance etc."
-- Exactly. I know probabilistically, the price range over 60 days is 2x larger than the 30 day price range but if you rely on TA, this is not the case. Therefore, going out 2 months does not necessarily mean I need to go twice as far OTM -- maybe 1.5x as far OTM.
I'll provide examples over the weekend...
EDIT: This whole discussion of going out two months instead of one is spurred by this low VIX. To get any meaningful credit from a 30-day spread, the strikes IMHO are to too close to the money. Am also concerned about what happens to spreads if vols pop suddenly... and would like to add some +vega positions to my portfolio...
Quote from momoneythansens:
Yes but can you go twice as far OTM?
When you're that far out (in time), I would suggest it's more of a vega play. VIX is now 10.18! It is likely you will be hurt by vega even ignoring delta. Are you planning on holding for only 30 days? In which case the positions will not gain much from time decay. Sure this means you're protected from the worst of short gamma too but I can't see how you're going to make any money unless you're relying on delta - but then you need to know which direction things are going in and there are possibly better ways of making money IMHO if you do know that. Do you?
If you're planning to hold till near expiration then the range of probable finishing prices is twice as large (roughly) as a 30 day spread, so you really do need to start out twice as far OTM to get the same probability characteristics...unless you're not bothered by that and base strike selection on support/resistance etc. but can you predict 60 days into the future with that degree of certainty especially given it's a new year? I don't know, perhaps you can.
[EDIT] You also have to contend with wider b/a spreads, though 60 days out shouldn't be too bad.
When you provide examples, we might be able to thrash it through and see what's what.
Momoney.