A Short Straddle brings in a lot of premium relative to other strategies but it is not allowed in an IRA account because the risk is not defined and there is a much larger hit to buying power for the same reason, so we decided to compare Short Straddles to Iron Flies , which are Short Straddles with long wings (long out-of-the-money (OTM) put and long OTM call) so the risk is defined. Another way to look at the Iron Fly is a combination of a short straddle and long a far OTM Strangle.
The classic Iron Fly has a fixed width between the straddle and its wings. We used a Dynamic Iron Fly though in which the put and call purchased have the same Delta, in this case a 10 delta. As the put-call skew changes the strike selection changes.
A study was conducted from 2005 to present using the SPY. Using options closest to 45 days to expiration (DTE) we compared Short Straddles to Straddles with Dynamic Protection. A table of the results of the Straddles with Dynamic Protection managed at 25% of max profit or held to expiration was displayed. The table included the average P/L. probability of profit (POP) max profit, max loss and average trading day duration. Another table compared a Short Straddle and Iron Fly that were both managed at 25% of max profit with the same metrics as the first table.
For more on Iron Flies including Dynamic Iron Flies you can check out our archives:
Watch this segment of “Market Measures” with Tom Sosnoff and Tony Battista for the valuable takeaways and the results of our study comparing Straddles to Iron Flies for a better understanding of how they act and what might be more suitable for your style of trading.
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