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Nvidia’s

stock fell in premarket trading Monday after reports emerged that the chipmaker’s plans to invest $100 billion into OpenAI were stalled.

The semiconductor giant’s shares was down 1.8% as of 6:30 a.m. ET. Company insiders said there was uncertainty about a deal between Nvidia and OpenAI, according to a Wall Street Journal on Friday, citing people familiar with the matter.

Nvidia announced an agreement with OpenAI in September to build at least 10 gigawatts of computing power for OpenAI, as well as an investment of up to $100 billion.