Investing.com -- Warren Buffett said he was the driving force behind Berkshire Hathaway's recent investment in Alphabet, not the conglomerate's new CEO Greg Abel.

"I initiated it," Buffett, 95, said in an interview with CNBC's Becky Quick. "I am not doing anything that he doesn't approve of. He's not doing anything I don't approve of. We talk all the time, but he is the decider."

Berkshire first disclosed a stake in Alphabet during the third quarter of 2025 and has since expanded the holding. Earlier this year, the conglomerate participated in a $10 billion private placement by Alphabet to help fund the company's artificial intelligence infrastructure. The company currently owns roughly $31 billion of Alphabet stock.

"The trick in life is to find — I mean investing — is to find businesses that are going to earn high returns on capital for an extended period of time," Buffett said.

When asked why he favored Alphabet over its peers, the Oracle of Omaha said the company is not among his top favorites at Berkshire.

"I would say that I don't like it as well as at least four or five other businesses that we own," Buffett said.

Buffett pointed to the large capital commitments required to compete in AI as a key issue facing Alphabet and its rivals.

"The real question with Google and all of its competitors now, because they're all laying out hundreds of billions, and that's real money," Buffett said. "That's the game they're playing now. They weren't playing that game with computer software."

The investor said Apple Berkshire's largest equity holding, remains one of his favorite stocks even after news that Tim Cook is stepping down as CEO.

"I know more about Apple than I knew many years ago," Buffett said. "If you're Apple, you've got very very smart people all over the world shooting and trying to figure out how to make sure that that Apple's future, the future is as bright as the past."