U.S. stock markets experienced a downturn on Tuesday, primarily driven by a sell-off in technology stocks amid a wave of earnings reports. The Nasdaq Composite led the decline, dropping 1.4%, while the S&P 500 and Dow Jones also closed lower. Investors are digesting results from major tech firms, with concerns about AI's impact and shifting market dynamics.

Nvidia shares fell nearly 3% following reports of strained relations with OpenAI, adding to the sector's woes. Software stocks also faced pressure, with Microsoft and others sliding. Meanwhile, PayPal's disappointing earnings and outlook, coupled with a change in leadership, further dampened investor sentiment, signaling a broader pullback from growth stocks.

In other news, gold prices jumped over 6%, while the House cleared a procedural hurdle to end the government shutdown. Chipotle is expected to report another quarter of sales declines, reflecting the challenging consumer backdrop. Investors are closely watching the earnings reports of major tech companies for insights into the future.

This week's earnings season will be crucial for the market's direction. Investors are keen to understand how rising interest rates, inflation, and a potential economic slowdown will impact corporate earnings. Key reports from Amazon and Alphabet will offer further clues about the AI trade and its valuations.