There's plenty of angst about the risks to the bull run that's pushed the S&P 500 Index up some 90% since its October 2022 low. The artificial-intelligence boom could turn to bust. The economy - and the Federal Reserve's interest-rate decisions - could defy expectations. And President Donald But after three years when the equity market's rip-roaring run made a mockery of any bearish calls, sell-side strategists are marching in lockstep optimism, with the average year-end S&P 500 forecast implying another ...