You can display flags on the chart to indicate a trade took place. In the preferences panel, check the appropriate check box, choose the type of mark and the size of the pin.

When you pan one finger over the trade flag, a message with information about the trade is displayed on the top left of the chart.

Screenshot 2013.10.30 15.58.11

Screenshot 2013.10.30 15.58.24

You can decide to, either mark the exact value, or position the flag above the high of the day not to interfere with the chart. See
Settings.