Intraday price change for STM is about $0.30 from the day's low to the day's high.
The previous business day's price range from the open of $19.16 is expected to range from a low of $19.00 to a high of $19.30.
Price moves beyond this range are outside the average.
The previous business day's closing price may be between $19.16 and $19.16 assuming average price movements.
Note that events including news, STM earnings, or broad market swings will unexpectedly affect price.
Closing prices outside of this range indicate a move outside the average closing price movement.