Mason Hawkins Portfolio Concentration: Top Holdings Analysis for Longleaf Partners

As of March 31, 2026, Mason Hawkins' portfolio at Longleaf Partners totals approximately $1.96 billion, showcasing significant concentration in specific sectors and individual stocks. This analysis focuses on the largest holdings and notable changes in their allocations.

The largest position is Rayonier Inc (RYN), holding 10.92% of the portfolio. This allocation represents a substantial increase, with share count rising by 89.52% compared to the previous period. Investors can explore Rayonier Inc's profile at RYN.

Mattel Inc (MAT) follows as the second-largest holding at 9.16% allocation. The position saw significant growth, with a 49.49% increase in shares. Further details on Mattel Inc are available at MAT.

IAC Inc (IAC) constitutes 7.92% of the portfolio. While the share increase was modest at 0.84%, it remains a key position. For more information on IAC Inc, visit IAC.

Energy sector exposure is notable through CNX Res Corp (CNX) at 7.61% allocation. However, this position decreased by 15.24% in shares during the period. Learn more about CNX Res Corp at CNX.

Albertsons Companies (ACI) holds 6.22% allocation, showing strong growth with a 20.32% increase in shares. Details on Albertsons Companies can be found at ACI.

Reverie Pharmaceuticals (REGN) at 4.97% allocation saw a reduction in position, with an 21.19% decrease in shares. More information on Regeneron Pharmaceuticals is available at REGN.

Kraft Heinz Co (KHC) at 4.37% allocation also experienced a decline, with a 12.02% reduction in shares. Explore Kraft Heinz Co at KHC.

Forced Exposure Inc (FDX) and Fortune Brands Innovations (FBIN) each hold around 4.3% allocation. FDX saw an 31.08% decrease in shares, while FBIN increased by 82.78%. Details on FedEx Corp are available at FDX, and on Fortune Brands Innovations at FBIN.

MGM Resorts International (MGM) completes the top ten holdings at 3.03% allocation, though it saw an 18.22% reduction in shares. More information on MGM Resorts International can be found at MGM.

This snapshot reveals Mason Hawkins' portfolio heavily weighted towards Real Estate, Consumer Cyclical, Communication Services, and Energy sectors through these significant positions. For a comprehensive view of Mason Hawkins' investment profile, visit Mason Hawkins at Insiderset.