Mattel, Inc. (MAT) ownership: Top institutional holder: EdgePoint Investment Group Inc. ($714.02M). Insider activity: Net Seller (3 buys, 17 sells). 3 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| EdgePoint Investment Group Inc. | 49140882.00 | $714.02M | 2026-03-31 |
| VANGUARD GROUP INC | 30521569.00 | $605.55M | 2025-12-31 |
| PRIMECAP MANAGEMENT CO/CA/ | 29697924.00 | $431.51M | 2026-03-31 |
| BlackRock, Inc. | 27322293.00 | $396.99M | 2026-03-31 |
| BlackRock Fund Advisors | 10769261.00 | $296.69M | 2016-12-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 13657490.00 | $198.44M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 13624399.00 | $197.96M | 2026-03-31 |
| ARIEL INVESTMENTS, LLC | 13567083.00 | $197.13M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-15 | |
| Sell | null | 2026-05-15 | |
| Sell | null | 2026-05-15 | |
| Sell | null | 2026-05-15 | |
| Sell | null | 2026-05-15 | |
| Sell | null | 2026-05-15 | |
| Sell | null | 2026-05-15 | |
| Buy | null | 2026-05-15 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.