Key Takeaways U.S. equities were mixed at midday, slowed by new Chinese tariffs on U.S. goods and weak tech results.Alphabet sales were short of forecasts, and the Google parent planned big artificial intelligence spending.

Palantir stock surges as artificial-intelligence gains drive an earnings and revenue beat, while China begins an antitrust probe into Alphabet’s Google. Alphabet is scheduled to report quarterly earnings after the closing bell Tuesday.

US stocks opened lower Wednesday as the Nasdaq and S&P 500 felt impact from Alphabet, AMD and renewed AI worries.

U.S. stock index futures dipped on Wednesday, with the Nasdaq particularly impacted as shares of Alphabet and AMD fell following subdued forecasts, while negative earnings reactions in other sectors compounded losses.

Alphabet said on Tuesday it will spend $75 billion on its AI buildout this year, 29% more than Wall Street expected, while posting cloud revenue that missed analysts' target. The tech giant's shares were down 9% in extended trading.

Key Takeaways Google parent Alphabet said it plans to spend $75 billion in capital expenditures this year, as it expands capacity to meet demand for AI.CFO Anat Ashkenazi said a majority of that spending would go toward technical infrastructure,

Alphabet, the parent company of Google, is planning to invest $75bn in AI infrastructure in 2025. This move is aimed at bolstering the company's capabilities in AI research and the integration of AI into products such as cloud and search services,