BigCharts.com uses a "$" to denote indices. For instance, the Nasdaq 100 is $NDX.For further customization, click customize the charts.When adding moving averages to the chart choose a base moving average and select the number of moving averages to display. For example: if you choose 20 as the Base MA and select 3 moving averages, the chart will include a 20, 40 and 60 MA.