Mattel is trading at $13.46, down 4.06%, as broader market pressure intensified on September 15, 2026.
- The S&P 500, Nasdaq Composite, and Dow Jones Industrial Average were all lower; the 10-year Treasury yield reached 5.02%, and Brent crude exceeded $107 per barrel.
- Mattel’s Goldman Sachs conference provided positive operational updates, but the source did not explicitly link those comments to the decline.