u/Turbulent_Cricket497

Of the underlinings that you normally trade, approximately how often during earnings season do you place on trades that expire shortly after earnings announcements? Or do you avoid earnings trades?

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For example, with 30 DTE, the ATM (711) SPY put option is around $12. I can see on Robinhood that the IV is 14.5%. If I didn’t have a platform to tell me what the IV is, is there a quick way I could calculate it using some type of back of the envelope math?