Intraday price change for AON is about $1.65 from the day's low to the day's high.
The previous business day's price range from the open of $142.24 is expected to range from a low of $141.47 to a high of $143.12.
Price moves beyond this range are outside the average.
The previous business day's closing price may be between $142.27 and $142.21 assuming average price movements.
Note that events including news, AON earnings, or broad market swings will unexpectedly affect price.
Closing prices outside of this range indicate a move outside the average closing price movement.