The OptionsNerds have been away working hard on volatility screeners to help identify cheap implied vols for our readers to buy call options on. We explain below the metrics for these screeners and the thinking behind the methodology.
Implied vol of the stock goes down by 5 days consecutively.
Percentage of days that 30 min historical volatility is lower than implied vol.
Implied vs Realized vol metric is at a low percentile versus historical.
From here we can determine the cheapest vols to buy from a list of stocks.
Note, the reader still needs to want to go long or short the underlying stock via options to utilize the screener, the screener is simply there to help identify cheap options from an implied volatility basis.