Palantir, Dell Stocks Jump on S&P 500 Addition Barron’sDell and Palantir to join S&P 500; shares of both jump CNBCPalantir, Dell Among New S&P 500 Members as Index Rebalances Yahoo FinancePalantir, Dell Among New S&P 500 Names as Index Rebalances BloombergPalantir, Dell Will Finally Join The S&P 500. The Stocks Are Jumping. Investor’s Business Daily