The volume confirms the trend when trading that you identify by way of using a moving average on your trading chart. You can make use of this indicator to show you the trend in a price asset on the chart. Moving averages will show you the direction that the market is moving in and can help you identify both profitable short and longer term opportunities to take in the market. There are many time periods that the moving average can be run over in order to identify the most recent trends. However most traders make use of those MA’s that run for a minimum of 20 days in order to help filter out shorter term moves. The longer time period provides a more accurate indication of the trend of the market. Once you have found this on your chart you can then use a volume indicator in order to confirm this move. A rising volume means that more people are buying in the direction of the trend.