Following a massive rally driven by artificial intelligence, U.S. technology stocks finally show their first signs of fatigue.

The S&P 500 dipped 0.4% and was on track for a fifth straight modest loss since setting an all-time high last week. The Dow ...

Wall Street's current valuations rank among the highest in history, driven by AI hype, stretched metrics, and fragile market breadth dominated by mega-cap stocks.