Intraday price change for COST is about $2.15 from the day's low to the day's high.
The previous business day's price range from the open of $150.98 is expected to range from a low of $149.52 to a high of $151.67.
Price moves beyond this range are outside the average.
The previous business day's closing price may be between $151.65 and $150.31 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.