A stock index, such as the DAX30 FTSE 100 or S&P 500, is a measurement of the price movement of all the shares that make up that index ( not just one companies share price) and is a performance indicator of a country’s economy or of an industry sector. If, on average, the share price of these companies goes up, then the index will likewise go up. Of course if they fall, the index will also fall.
When you take a position on an index, you are effectively investing in the performance of these stocks but as a whole and not by individual companies. For example, Nasdaq 100 represents the largest 100 companies traded on the Nasdaq Stock Exchange.
Trading indices means you are trading on the performance of the whole index.
At Nexus Trader , you get access to the Dow Jones, FTSE, Dax, S&P500, , Nasdaq, and many more.