Not an options guy, hoping some of you experts can weigh in.
We all know about IV crush following a scheduled event. Earnings, FDA, etc.
But what is the typical IV decay profile post-event? As an example, let's say a company is reporting earnings in afterhours. Assume conference call scheduled for next day at 10am. Assume weekly ATM call/put is pricing in a 10% move one way or the other. Now assume the stock opens flat the next day. At the open, how much would the IV typically drop? Might look for excessive IV crush where we can get long a straddle and profit from large realized in the next day or two. Thoughts?
Compare your Ivol to the last 30 day statvol, take the difference, and plug in the vega to give a rough idea of the dollar amount of a possible crush.

