Investors, including billionaires, have generated enormous returns by investing in Nvidia ( NVDA 1.69% ) in recent years. The artificial intelligence (AI) chip giant climbed more than 800% from the start of 2023 through the end of last year as demand for its products and services soared. And with the AI market forecast to reach beyond $2 trillion a few years down the road, it's likely Nvidia will continue to benefit.

But it's important to remember that Nvidia isn't the only attractive AI bet to be found. In fact, right now, some of the world's top investors are favoring another AI giant over Nvidia. This particular player is among the top five holdings of billionaires David Tepper of Appaloosa Management, Philippe Laffont of Coatue Management, and Stephen Mandel Jr. of Lone Pine C

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