Intraday price change for KCG is about $0.04 from the day's low to the day's high.
The previous business day's price range from the open of $19.98 is expected to range from a low of $19.96 to a high of $20.00.
Price moves beyond this range are outside the average.
The previous business day's closing price may be between $19.98 and $19.98 assuming average price movements.
Note that events including news, KCG earnings, or broad market swings will unexpectedly affect price.
Closing prices outside of this range indicate a move outside the average closing price movement.