The 'blue sky' scenario that could take the S&P 500 to 8,000 by year's end, according to JPMorgan

JPMorgan has returned to a higher S&P 500 target, helped by earnings optimism and rebooted investor interest in artificial-intelligence stocks. While an all-clear over the Iran conflict remains elusive, markets have been latching on to hopes on the horizon, which has led to fresh record highs for the S&P 500.