Keith Speights, The Motley Fool

Thu, Jun 19, 2025, 1:46 AM5 min read

• Several billionaire hedge fund managers loaded up on Alphabet stock in Q1.

• George Soros was a big buyer of Amazon, perhaps because of the company's rapidly increasing profits.

• Steve Cohen gobbled up shares of Meta in Q1, which could reflect a big bet on the company's AI smart glasses.

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If you follow the world's wealthiest investors, you'll see a wide range of investing styles. Some focus on valuation. Others prioritize growth potential. A few look for arbitrage opportunities.

But there's at least one common denominator among many ultrarich investors these days: They like artificial intelligence (AI) stocks. Billionaires are buying these three AI stocks hand over fist.

Google parent Alphabet (NASDAQ: GOOG) (NASDAQ: GOOGL) stands out as a top pick for several billionaire investors. Izzy Englander might be the most bullish about the tech stock. His Millennium Management hedge fund upped its position in Alphabet by 150.8% in the first quarter of 2025.

Ken Griffin is another billionaire hedge fund manager who's enthusiastic about Alphabet stock. His Citadel Advisors increased its stake in the tech giant by 55.7% in Q1. Appaloosa's David Tepper also bought over 128,000 additional shares of Alphabet, bumping up his holding in the stock by 6.8%.

What do these billionaire investors like about Alphabet? Its valuation is probably near the top of the list. The stock trades at a forward price-to-earnings ratio below 19. None of the other so-called "Magnificent Seven" stocks comes anywhere close to such an attractive valuation.

Alphabet has also been showing that it's playing to win in the AI space. The company's Google Gemini 2.5 Pro ranks No. 1 overall on the LMArena leaderboard. Google Cloud continues to be the fastest-growing of the top three cloud service providers.

There isn't as much of a consensus among billionaire investors when it comes to Amazon (NASDAQ: AMZN). Chase Coleman's Tiger Global Management upped its stake in the e-commerce and cloud service giant by 2.7% in Q1 and Englander's Millennium Management boosted its position in Amazon by 5.3%. However, Griffin's Citadel Advisors reduced its Amazon holding by 43.5%. Tepper's Appaloosa trimmed its position in Amazon by 3.5%.

But one billionaire loaded up on Amazon stock in the first quarter. George Soros bought more than 101,000 shares, increasing his hedge fund's stake in Amazon by 30.5%. Amazon is now the 11th largest holding in Soros Fund Management's $5.61 billion portfolio.