Stock market news live updates: S&P 500 posts quarterly advance of 20% for index's best Q2 since inception in 1957

Stock market news live updates: S&P 500 posts quarterly advance of 20% for index's best Q2 since inception in 1957Stocks rallied into the close Tuesday to cap off the best second quarter for blue-chip equities since the S&P 500 was created in 1957.