
After a red-hot run of AI-driven gains, U.S. markets took a breather on September 23 as investors digested economic signals. The S&P 500 and tech-heavy Nasdaq pulled back after three straight record closes powered by AI enthusiasm reuters.com. Nvidia, fresh off a new record high the day prior, dipped 2.8% as traders took profits reuters.com. Other mega-cap tech names like Amazon, Microsoft, and Apple also ticked lower reuters.com. Fed Chair Jerome Powell’s cautious remarks about interest rates and stock valuations cooled sentiment, prompting some rotation out of richly valued tech shares. “With this being the third year of double-digit returns for the S&P 500, there needs to be another strong catalyst to move stocks materially higher. And right now, it is not clear what that catalyst can be,” observed Oliver Pursche of Wealthspire Advisors, noting signs of an economic slowdown tempering the rally reuters.com.