Intraday price change for REGN is about $11.96 from the day's low to the day's high.
The previous business day's price range from the open of $442.04 is expected to range from a low of $435.14 to a high of $447.10.
Price moves beyond this range are outside the average.
The previous business day's closing price may be between $443.50 and $440.58 assuming average price movements.
Note that events including news, REGN earnings, or broad market swings will unexpectedly affect price.
Closing prices outside of this range indicate a move outside the average closing price movement.