How much are stock prices likely to move? You might want to consider using Average True Range (ATR), a popular technical indicator.
ATR computes a measure of volatility by considering the entire range of a symbol’s price range over a given period. It began in the commodities market but is now common throughout the world of trading.
This instructional video teaches viewers how ATR can help to find trading opportunities. It covers scanning symbols, basics of ATR calculation and measuring volatility.