Alphabet shares fell 8% on Wednesday as investors balked at the Google parent's slowing cloud growth and planned $75 billion capital spending for the year, underscoring growing fears over Big Tech's escalating artificial intelligence costs.

Alphabet shares dropped after the search giant fell short of Wall Street's fourth-quarter revenue expectations and announced big spending plans

Alphabet shares fell more than 9% in after-hours trading Tuesday after the company reported fourth-quarter results that missed on revenue expectations and announced more artificial intelligence investments. Earnings per share for the Google parent company beat analysts' estimates by two cents. Here are other numbers Wall Street was watching:

Amazon, Microsoft, and Alphabet each saw sharp stock declines following their fourth-quarter earnings reports, which revealed steep increases in AI-related capital spending. Microsoft and Google’s mar

A clear trend has emerged in the past few weeks, as one tech giant after another reported their earnings: Big Tech is spending big on artificial intelligence in 2025. Combined, Meta, Microsoft, Amazon and Alphabet,

Key Takeaways Amazon said it expects to spend over $100 billion in capital expenditures this year, with the "vast majority" going to AI for Amazon Web Services.The company is the latest Big Tech firm to announce it's boosting expected AI infrastructure spending this year.