Mason Hawkins - Longleaf Partners Portfolio Position Sizes (Q1 2026)

As of Mar 31, 2026, the Longleaf Partners portfolio balances reported a total equity value of $2.03B across 49 publicly traded holdings. These balances reflect the most recent SEC 13F filing dated May 15, 2026, providing an updated snapshot of assets under management.

The portfolio balances highlight RAYONIER INC (RYN) as the single largest position, accounting for 10.9% of total equity value, followed by MATTEL INC (MAT), IAC INC (IAC), CNX RES CORP (CNX), and others. Collectively, the top five holdings represent 41.8% of the portfolio, showing how capital is distributed among core positions and long-term investments.