Warren Buffett Has a New Favorite Quantum Computing Stock. (Hint: It's Not D-Wave or IonQ.) Before Q3, Amazon ranked as Buffett's favorite quantum computing stock. However, Berkshire Hathaway now has a much larger position in Google Quantum AI parent Alphabet.

Veteran investor Tom Russo hailed Berkshire Hathaway's Alphabet stake, and said he's more worried about the US debt and the dollar than an AI crash.

If the AI bubble bursts, it could bring down some of the biggest tech companies – but perhaps not its most durable, like Google and Apple.

Warren Buffett is warning people about artificial intelligence (AI)-generated videos of him. A release from Berkshire Hathaway (BRK-B, BRK-A) titled "It’s Not Me" states, "Mr. Buffett is concerned that these types of fraudulent videos are becoming a spreading virus.

YouTube deepfakes mimicking Warren Buffett’s image and voice prompted Berkshire Hathaway’s “It’s Not Me” warning. Verified message from Buffett arrives Nov. 10.

Berkshire Hathaway Inc (NYSE: BRK.A) ( NYSE: BRK.B) just disclosed a US$4.3 billion stake in Alphabet Inc ( NASDAQ: GOOGL) ( NASDAQ: GOOG ), the parent company of Google, YouTube and self driving car company Waymo.

Warren Buffett will be officially stepping down as Berkshire Hathaway’s (NYSE:BRK-B) CEO in a little over a month. But until he’s out of his seat, Buffett appears to be very willing to make big moves within his portfolio that will benefit other generations down the line.

Google stock hits all-time high as Berkshire Hathaway reveals $4 billion investment, marking Warren Buffett's rare tech bet and endorsement of AI efforts.

Berkshire Hathaway trimmed its Apple (NASDAQ:AAPL) stake and opened a large position in Alphabet (NASDAQ:GOOGL), according to a recent filing with the U.S. Securities and Exchange Commission. The filing shows the conglomerate sold roughly 74% of its Apple holding,

Berkshire Hathaway revealed in a regulatory filing late Friday that it purchased 17.8 million shares of Google parent Alphabet during the third quarter.