Shares of technology companies rose as traders continued to chase momentum in mega-cap tech stocks.

"It's almost like, if you're not one of the top 10 or 20 stocks, if you're not in a supergrowthy area that may have some AI component to it, then [you're] certainly not up like those are," said J.D. Joyce, president of Houston financial advisory Joyce Wealth Management.

Shares of CoreWeave rallied after the cloud-service provider revealed a $6.3 billion cloud-computing deal with Nvidia.

Nvidia shares initially lost ground amid reports China found that the chip maker had run afoul.

President Trump said a meeting between a U.S. team led by Treasury Secretary Scott Bessent and his Chinese counterparts had been a success, and hinted at a deal over the future of TikTok.

Shares of Tesla jumped after Chief Executive Elon Musk disclosed his first purchase of the stock in the open market since February 2020, purchasing roughly $1 billion of shares.

Google parent Alphabet cracked $3 trillion in market capitalization for the first time after its Gemini artificial-intelligence assistant shot up the ranks to become the most popular free iPhone app, thanks to a new image-editing feature called Nano Banana. Since Nano Banana's release on Aug 26., Gemini has gained 23 million users, intensifying competition with market leader ChatGPT.

Write to Rob Curran at rob.curran@dowjones.com

(END) Dow Jones Newswires

September 15, 2025 18:27 ET (22:27 GMT)

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