Days after Chinese upstart DeepSeek revealed a breakthrough in cheap AI computing that shook the U.S. technology industry, the chief executives of Microsoft and Meta defended massive spending that they said was key to staying competitive in the new field.

Markets are looking for assurances that DeepSeek hasn't completely disrupted the AI investment thesis. They may be disappointed.

The results were a mixed bag, with Wall Street increasingly skeptical of capital expenditures on artificial intelligence.

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

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Meta has defended its $65bn (£52bn) investment in artificial intelligence (AI) days after US tech stocks wobbled in the wake of Chinese AI app DeepSeek's sudden rise. Chief executive Mark Zuckerberg said to investors on Wednesday there was a lot to learn from DeepSeek,

Key Takeaways Meta CEO Mark Zuckerberg said Wednesday’s that the rapid rise of competitors from China has only strengthened the tech giant’s commitment to its AI ambitions. The CEO said it’s too early to know how growing competition from China could impact its future investments.

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.