Intraday price change for GLW is about $0.51 from the day's low to the day's high.
The previous business day's price range from the open of $27.88 is expected to range from a low of $27.61 to a high of $28.12.
Price moves beyond this range are outside the average.
The previous business day's closing price may be between $27.92 and $27.85 assuming average price movements.
Note that events including news, GLW earnings, or broad market swings will unexpectedly affect price.
Closing prices outside of this range indicate a move outside the average closing price movement.