The Nasdaq and S&P 500 are two different indexes. The S&P is a much broader representation of the US market as it includes stocks that are listed across different markets and sectors, whereas the Nasdaq index is exclusively made up of Nasdaq-listed stocks, over 50% of which are technology focused. When choosing between trading S&P 500 and Nasdaq, the choice should be made based on the trader’s market knowledge and risk tolerance while taking into account the difference between the underlying structures.