SOUTHEASTERN ASSET MANAGEMENT INC/TN/ is an institutional investment manager that files quarterly 13F reports with the SEC. As of Q1 2026, the fund manages $2.0B in reported equity holdings across 49 positions. The largest holdings are RYN (10.9%), MAT (9.2%), IAC (7.9%), CNX (7.6%), ACI (6.2%). The portfolio is concentrated in Other (75.4%), Energy (7.6%), Consumer Cyclical (4.4%). Data sourced from SEC EDGAR 13F filings (CIK 807985).