In trading on Wednesday, shares of Aon plc (Symbol: AON) crossed above their 200 day moving average of $322.28, changing hands as high as$322.69 per share. Aon plc shares are currently trading up about 0.7% on the day. The chart below shows the one year performance of AON shares, versus its 200 day moving average: Looking at the chart above, AON's low point in its 52 week range is $273.025 per share, with$347.37 as the 52 week high point — that compares with a last trade of $322.48. The AON DMA informat ...