Quote from MacThor:
the margin requirements were strangling (pun intended) my ability to trade the rest of the portfolio.
Have a look at futures options with SPAN and/or become a member of a JBO for market maker haircut. Either of these will result in less onerous margin requirements and potentially better risk management opportunities. Both topics have been discussed extensively on this thread so have a browse/search.
A lot of you have been talking about your preference for diagonals over verticals. This has me curious. When you put on a DD (or even a one-sided diagonal), are you closing the position at expiration of the short strikes? Or is your intent to roll it into an Iron Condor (credit spread)? What are the advantages of the diagonal (usually a debit) over a vertical (always a credit)?
IMO, a lot of profit potential in double diagonals is locked up in the roll opportunities. See
here for a recent dialogue on the topic.
Others prefer to close at expiration of front month options.
Perhaps my greeks are a bit rusty but I'm not seeing much -- if any -- theta improvement purchasing a month further out on my long strikes?
I believe Murray a.k.a Sailing has written a fair amount with respect to the greeks of a (double) diagonal position. Have a browse/search of this thread.
Essentially, by going long back month options you are increasing the VEGA sensitivity of the position.
You may gain an insight into the behavior of a diagonal by considering it as a vertical + a calendar.
This extra VEGA can come in handy when large moves occur.
The idea is to be earning some decay month to month whilst nothing happens but also be able to profit when more extreme moves occur.
e.g.
http://www.elitetrader.com/vb/showthread.php?s=&postid=1115645#post1115645
If you do rolling double diagonals it's possible to acheive a portfolio that allows you to be long THETA all the while yet also be net long contracts and/or VEGA for when the fit hits the shan.
You can either go about it by putting on double diagonal
positions or you can take an
inventory approach and add and build your inventory over a period of time and manage the portfolio by greeks.
The difference with verticals is that when disaster strikes, things can get ugly fast.
I suspect most of your questions on this topic can be answered by reading the last 1-200 pages in this thread.
Good luck!
MoMoney.