Intraday price change for COST is about $2.24 from the day's low to the day's high.
The previous business day's price range from the open of $158.00 is expected to range from a low of $156.72 to a high of $158.95.
Price moves beyond this range are outside the average.
The previous business day's closing price may be between $158.40 and $157.60 assuming average price movements.
Note that events including news, COST earnings, or broad market swings will unexpectedly affect price.
Closing prices outside of this range indicate a move outside the average closing price movement.