What Mason Hawkins bought and sold in Q1 2025
In Q1 2025, Mason Hawkins (Southeastern Asset Management) opened 3 new positions — including REGN (3.9%), TRIP (1.3%), SHEN (0.6%), trimmed 3, exited 3 (RTX, LLYVK*, LLYVA*). The book stood at $1.88B across 43 positions, filed May 15, 2025.
3New0Added3Trimmed3Exited
New positions (3)
Trimmed (3)
- AMGAffiliated Managers Group-32% shares · 4.3% · $81M
- OSCROscar Health Inc - Class A-33% shares · 1.5% · $27M
- HDBHdfc Bank Ltd-adr-26% shares · 0.2% · $3M
Exited (3)
- RTXRtx Corpwas 2.9% of book
- LLYVK*Liberty Media Corp-liberty-cwas 0.5% of book
- LLYVA*Liberty Media Corp-liberty-awas 0.2% of book
Mason Hawkins's other filings
Changes vs the prior quarter's 13F, long US equity positions only (no shorts, options, or non-US listings). ADD/TRIM are share- count changes of ±20% or more. Sourced from SEC EDGAR. Not investment advice.