Mattel (MAT): Leadership Pivot and Takeover Interest Drive Rebound Following Q3 Softness

Longleaf Partners, managed by Southeastern Asset Management, released its third-quarter 2026 investor letter for its “Partners Fund”. The letter can be downloaded here. Coming into this year, the Fund’s three-year annualized returns were at 11.7%, but recent performance, particularly this year and in Q3, has raised concerns about the investment strategy. The Fund returned 2.41% in […]