moatshark My

People

Mason Hawkins

Founder, Chairman and Co-Portfolio Manager, Southeastern Asset Management

Stepped down as CEO in January 2019; remains Chairman and a co-portfolio manager of the Longleaf Partners funds.

Biography

Mason Hawkins founded Southeastern Asset Management in Memphis in 1975, after serving as Director of Research at Atlantic National Bank in Jacksonville and First Tennessee Investment Management. He handed the CEO role to Ross Glotzbach in 2019 and remains Chairman and co-portfolio manager of the Longleaf Partners, Small-Cap and Global funds and the Longleaf Partners Global UCITS Fund. He holds a BA in finance from the University of Florida and an MBA from the University of Georgia, and is a CFA charterholder.

Southeastern Asset Management’s largest US holdings

From the Q2 2026 13F, worth $1.9bn in total. See every holding and change

  1. RayonierRYN10.5%
  2. MattelMAT8.9%
  3. CNX ResourcesCNX8.3%
  4. IACPPLI7.5%
  5. Albertsons CompaniesACI6.1%
  6. Regeneron PharmaceuticalsREGN5.0%
  7. Fortune Brands InnovationsFBIN4.8%
  8. Kraft HeinzKHC4.5%
  9. Abbott LaboratoriesABT4.0%
  10. FedExFDX3.2%

Also at Southeastern Asset Management

  • Ross Glotzbach Chief Executive Officer, Head of Research and Co-Portfolio Manager

Sources: southeasternasset.com, institutionalinvestor.com, southeasternasset.com. Checked October 2026.