Indices are baskets of equities listed on an exchange (or exchanges) and are often good indicators of market sentiment. For example, the Dow Jones Industrial Average, the DAX 40, the NAS100 (Nasdaq-100 with symbol NDX) and the S&P 500. Not all indices focus on stocks, such as the US dollar index and the VIX 75 volatility index. IC Markets has 25 indices in total to trade.