The Value of One last few days in fly value. Special thanks to
@sigma for this chart of an IWM fly during the last week of its life. I've gravitated towards entering flies on Thursday for Friday expiration as it appears the greeks and their changes provide the greatest change in fly value from the day before expiration to the day of. But as I look at this perhaps entering Wednesday afternoon or Thursday morning is a better idea. Thoughts?
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You have said the open interest of particular strikes can change greatly over a short period of tine. As relative open interest is a major input in strike selection and timing for your pinning strategy, if you add DTE, you are effectively changing your focus, not that’s a bad thing.
The following are some random thoughts after driving almost 1500 miles in my car in 30 hours:
1. How are your executions? Are you getting filled near mid or paying the full spread?
2. How would a synthetic, say a delta hedged long vertical spread for a credit, centered around a higher IV strike performed? Any hedging using shares does not have to create neutrality, depending on your outlook, of course. Also, you could buy a option to protect against an adverse move in the shares, as well.
3. Your protection strike selection could be based on highest net potential ROC.
4. How much theta are your legs costing you?
5. As it is, NQ had a big trend day on Friday, and you still had a positive gross profit. Your strategy seems almost bullet proof.
6. Managing short options on expiration day is tough and subject to a lot of variance in my opinion. You shouldn’t expect to call every zig or zag perfectly every Friday.
Overall, it seems you are doing fine. Perhaps focus on getting more IV for your short options while paying less theta on your protection might help. Please excuse me a moment. I have a call from Payoff Diagrams on line one!