Microsoft on Wednesday forecast disappointing growth in its cloud computing business, sending its shares down 4.5% in after-hours trading as investors worry about big spending, elusive artificial intelligence revenue and competition from cheaper AI models from China.

Microsoft MSFT.O dropped 4.7% after forecasting disappointing growth in its cloud computing business. Meta Platforms META.O rose 4.5% after beating estimates for fourth-quarter revenue, but forecast that first-quarter sales might miss estimates.

Stocks are ticking higher on Wall Street following a rush of profit reports from some of the country’s most influential companies. The S&P 500 rose 0.3% in early Thursday trading. The Dow Jones Industrial Average slipped 14 points,