Today's biggest winners and losers in the stock market.

On this episode of Stock Movers:

- Meta (META) has agreed to deploy “millions” of Nvidia processors over the next few years, tightening an already close relationship between two of the biggest companies in the artificial intelligence industry. Meta, which accounts for about 9% of Nvidia’s revenue, is committing to use more AI processors and networking equipment from the supplier, according to a statement Tuesday. For the first time, it also plans to rely on Nvidia’s Grace central processing units, or CPUs, at the heart of standalone computers. Shares of Meta rose in trading on Wednesday.

- Berkshire Hathaway (BRK/A) slashed its holding in Amazon.com Inc. by more than 75% in the fourth quarter, while also building a stake in the New York Times Co. — Warren Buffett’s last new bet as chief executive officer. The conglomerate acquired 5.1 million shares of the media publishing company in the three months through December, a stake worth $351.7 million at year-end, according to a regulatory filing Tuesday.

- Madison Square Garden Sports (MSGS) shares skyrocketed after the company said its board unanimously approved a plan to explore a possible spin-off that would separate its New York Knicks business from its New York Rangers business, creating two distinct publicly traded companies.

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