Intraday price change for HDB is about $1.09 from the day's low to the day's high.
The previous business day's price range from the open of $87.65 is expected to range from a low of $87.10 to a high of $88.19.
Price moves beyond this range are outside the average.
The previous business day's closing price may be between $87.56 and $87.74 assuming average price movements.
Note that events including news, HDB earnings, or broad market swings will unexpectedly affect price.
Closing prices outside of this range indicate a move outside the average closing price movement.