Tesla stock rises on optimism over the electric-vehicle maker’s growth projections, Microsoft’s Azure growth misses estimates, Meta’s fourth-quarter profit handily tops forecasts, and UPS says it will be reducing volume with Amazon.

"Investing 'very heavily' in capital expenditure and infrastructure is going to be a strategic advantage over time," Mark Zuckerberg said.

Wall Street's main indexes rose on Thursday, driven by post-earnings advances in Meta and Tesla, although Microsoft's weak cloud forecast and downbeat results from Cigna dampened investor enthusiasm. Microsoft MSFT.O dropped 4.7% after forecasting disappointing growth in its cloud computing business.

Key tech stocks were a mixed bag in early trading Thursday after executives at Meta and Microsoft said they plan to keep pouring billions of dollars into AI – despite lingering anxiety over the

Microsoft has earmarked US$80 billion ($128 billion) for AI in its current fiscal year, while Meta has pledged as much as US$65 billion. That is a far cry from the roughly US$6 million DeepSeek said it has spent to develop its AI model.

Meta CEO Mark Zuckerberg, meanwhile, seemed to downplay the threat posed by DeepSeek, saying that the industry is constantly changing and DeepSeek’s announcement is simply a part of that ebb and flow.

The CEOs of the two companies said the massive AI spending was crucial to staying competitive in the new field

Stocks rose Tuesday, led by tech. AI fears loom as Meta, Microsoft report earnings. Tesla faces policy risks. Fed decision, major earnings, and government cuts ahead.

Investors react to the Federal Reserve's policy decision and Chairman Jerome Powell's press conference, as well as results from Meta, Microsoft and Tesla.

Dow Jones stocks edged higher in the stock market today as investors awaited Powell's remarks and earnings from three tech titans.

Microsoft and Meta report earnings today, with AI investments and cloud growth in focus. Can these tech giants sustain their stock market momentum?