(Bloomberg) -- Goldman Sachs Group Inc. strategists have boosted their year-end target for the S&P 500 Index for a third time, reflecting Wall Street’s optimistic outlook for earnings growth and the US economy.Most Read from BloombergSouthwest Plane Plunged Within 400 Feet of Ocean Near HawaiiWells Fargo Fires Over a Dozen for ‘Simulation of Keyboard Activity’Yes, Everyone Really Is Sick a Lot More Often After CovidBump Stock Ban Tossed Out by Supreme Court in Gun-Rights WinTesla Investors Get B