The S&P 500 was down 0.4% on Tuesday, which would snap the index's winning run at seven days. The Dow was down 150 points, or 0.3%, while the Nasdaq Composite was down 0.7%. The latest artificial intelligence rally hit a snag on Tuesday, and it's putting the S&P 500's winning streak in jeopardy. Only 190 S&P 500 stocks were falling, but chip stocks were among the index's biggest losers. The iShares Semiconductor ETF was down 2%, while the Roundhill Magnificent Seven ETF was down 0.8%. ...