Billionaires Are Piling Into These Top Stocks

Should You Buy Them, Too?

Mar. 17, 2026 at 9:50am

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Several billionaire investors, including Bill Ackman, Stanley Druckenmiller, Ken Griffin, and David Tepper, have been loading up on three top stocks - Alphabet, Amazon, and Meta Platforms. The article examines whether investors should follow the lead of these successful investors and buy these stocks as well.

Why it matters

Billionaire investors like Ackman, Druckenmiller, Griffin, and Tepper have achieved tremendous success over the years, so their investment decisions are closely watched by the broader investing community. Understanding their rationale for piling into these three stocks can provide valuable insights for individual investors looking to make smart long-term investment choices.

The details

The article delves into the specific moves made by these billionaire investors in the fourth quarter of 2025. Griffin added 39.8% to Citadel's stake in Alphabet, Druckenmiller increased Duquesne Family Office's position in Alphabet by 276.7%, and Tepper boosted Appaloosa's holdings in the stock by 28.9%. On Amazon, Griffin increased Citadel's position by 336.2%, while Ackman and Druckenmiller also added to their funds' Amazon stakes. For Meta Platforms, Ackman made a sizable new investment through Pershing Square, and Tepper increased Appaloosa's stake by 62.2%, but Griffin went against the grain by selling 59.2% of Citadel's Meta position.

  • In the fourth quarter of 2025, these billionaire investors made significant changes to their positions in Alphabet, Amazon, and Meta Platforms.

The players

Bill Ackman

The founder and CEO of Pershing Square Capital Management, a successful hedge fund.

Stanley Druckenmiller

The founder of Duquesne Family Office, a prominent investment management firm.

Ken Griffin

The founder and CEO of Citadel Advisors, one of the world's largest hedge funds.

David Tepper

The founder of Appaloosa, a highly successful hedge fund.

Alphabet

The parent company of Google, a leading technology and internet conglomerate.

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The takeaway

The investment decisions of these highly successful billionaire investors provide valuable insights for individual investors looking to make smart long-term investment choices. While their moves don't guarantee success, understanding their rationale and the potential opportunities in Alphabet, Amazon, and Meta Platforms can help inform investment strategies for those seeking to emulate the success of these renowned investors.