Renowned billionaire investor and hedge fund manager Seth Klarman is making significant moves in the stock market, particularly in the tech, healthcare, and airline sectors.
According to the latest 13F filing from Klarman’s Baupost Group, the firm has initiated a new position in the tech giant Amazon (AMZN).
In the fourth quarter of 2025, Baupost Group acquired 2,121,391 AMZN shares valued at $489.659 million.
During the same period, the firm also increased its holdings in the government-contracted healthcare provider Molina Healthcare (MOH) by purchasing 625,000 shares worth $108.463 million. Additionally, Baupost Group invested in Mexico’s leading airline, Grupo Aeroméxico S.A.B. de C.V. (AERO), accumulating 4,855,180 shares valued at $106.620 million.
Meanwhile, Klarman’s hedge fund reduced its stake in Alphabet Class A shares (GOOG) by 41%. Baupost Group sold 770,957 GOOG shares, bringing its ownership down to 1,087,181 shares worth $341.157 million.
The firm also decreased its holdings in Ireland-based materials company CRH PLC by 68% last quarter. Baupost Group sold 2,310,438 CRH shares, reducing its holdings to 1,072,957 shares valued at $133.905 million.
A detailed analysis of Baupost Group’s holdings reveals that the fast-food chain firm Restaurant Brands International (QSR) is its largest position, representing 10.44% of its portfolio, followed by Amazon at 9.28% and London-based insurance company Willis Towers Watson (WTW) at 8.45%.
Subsequent top holdings include healthcare firm Elevance Health (ELV) at 8.43% and freight railroad company Union Pacific Corp (UNP) at 7.13%.
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