Big Tech drives S&P 500 to record high in coronavirus rally

The widely followed index's most valuable companies have surged this year, with Apple, Microsoft and Amazon each up between 33% and 72% year to date.ABIOMED, Regeneron Pharmaceuticals and West Pharmaceutical Services, all involved in developing and selling therapies for the coronavirus, have risen over 50% since the S&P 500's previous record high in February.