Quote from stevenpaul:
Thank you all very much! Good feedback from all of you. To Spindr0: What a generous, thorough reply! The first question that comes to mind, is how can we broaden the profit zone of condors? Judging by some of the responses, notably Maverick74's, it would seem impossible using natural quotes to pull it off, but that was concerning classic flies. I was getting a broader zone with double broken wing butterflies, but I'm not impressed with the risk/reward ratio. With calendars, we can achieve some pretty impressive results, but the vega exposure seems too damn high for purposes of a theta harvesting strategy. For example, with Dec/Jan calendars on Spy at 110 and 119 using puts, and 126 using calls (to avoid ITM options), we get a profit zone that extends from 107 up to 127. That wide of a zone with 3 weeks of market exposure seems like a good deal to me. Vega on the position is $22.26. That seems a little high. It's 15% of the maximum profit. Am I right in finding that excessive? It would be different if I had a clue where IV was going in SPY. The nice thing about flies and condors is that vega, while obviously negative, doesn't play as prominent a role, and is something of a moot point come expiration where the spot price is all that counts. With calendars, you've got to hope the long is still worth a damn at or near expiration or the theta gains are irrelevant. Hence my preference for a butterfly type structure.
Thanks again, and send over some more of your wisdom, fellows!