MAT — Mattel, Inc.

Ownership history in SOUTHEASTERN ASSET MANAGEMENT INC/TN/  ·  34 quarters on record

This page tracks every 13F SEC filing in which SOUTHEASTERN ASSET MANAGEMENT INC/TN/ reported a position in Mattel, Inc. (MAT). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.

Peak position
8.46% (2020 Q3)
Avg. % of fund
6.73%
First filed
2017 Q3
Last filed
2025 Q4
Quarters held
34
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2025 Q4 ADDED 8,570,328 +409,032 +5.0% 7.57% $170.0M $19.84
2025 Q3 ADDED 8,161,296 +941,031 +13.0% 7.01% $137.4M $16.83
2025 Q2 ADDED 7,220,265 +381,331 +5.6% 7.18% $142.4M $19.72
2025 Q1 REDUCED 6,838,934 -793,410 -10.4% 7.08% $132.9M $19.43
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% of Fund (quarterly)    MAT price (monthly, adj. close)

Other funds also holding MAT

As of 2025 Q4 — sorted by position size

SERENITY CAPITAL MANAGEMENT PTE. LTD. 3Y 12.56% Simcoe Capital Management, LLC 3Y 7Y 9.37% EdgePoint Investment Group Inc. 3Y 7Y 7.71% HS Management Partners, LLC 3Y 7Y 2.89% ARIEL INVESTMENTS, LLC 3Y 7Y 2.69% OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) 3Y 7Y 2.25% Patient Capital Management, LLC 3Y 2.14% Galvin, Gaustad & Stein, LLC 3Y 1.95% FRONTIER CAPITAL MANAGEMENT CO LLC 3Y 7Y 0.89% Livforsakringsbolaget Skandia, Omsesidigt 3Y 7Y 0.87%
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