The S&P 500 is an index of some of the leading companies in the United States. The S&P 500 doesn’t push extremely high in one area as its supposed to show a cross section of America.
Here is the breakdown the S&P 500 by Market Sector:
As you can see there is a very broad cross section of companies in all sectors of America. Technology is the leading sector, but it’s not the whole S&P 500.