Intraday price change for SM is about $1.12 from the day's low to the day's high.
Today's price range from the open of $17.85 is expected to range from a low of $17.32 to a high of $18.44.
Price moves beyond this range are outside the average.
Today's closing price may be between $17.89 and $17.81 assuming average price movements.
Note that events including news, SM earnings, or broad market swings will unexpectedly affect price.
Closing prices outside of this range indicate a move outside the average closing price movement.