S&P 500 Falls 26.98 Points (0.35%)

By Rob CurranU.S. stocks slipped after the sudden ouster of one of the key architects of the artificial-intelligence boom sent shockwaves through the technology sector.The Dow Jones Industrial Average fell 189.40 points, or 0.36%, to 52297.09. The broad S&P 500 lost 26.98 points, or 0.35%, to 7592…