Masco Corporation (MAS) ownership: Top institutional holder: VANGUARD GROUP INC ($1.77B). Insider activity: Net Seller (8 buys, 12 sells). 6 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 27823347.00 | $1.77B | 2025-12-31 |
| BlackRock, Inc. | 15618560.00 | $942.89M | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 13224747.00 | $798.38M | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 12351666.00 | $745.67M | 2026-03-31 |
| STATE STREET CORP | 9959319.00 | $601.24M | 2026-03-31 |
| HARRIS ASSOCIATES L P | 8596734.00 | $518.98M | 2026-03-31 |
| JPMORGAN CHASE & CO | 6641369.00 | $389.18M | 2026-03-31 |
| VAN ECK ASSOCIATES CORP | 5842483.00 | $352.71M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-08 | |
| Sell | null | 2026-05-08 | |
| Sell | null | 2026-05-08 | |
| Sell | null | 2026-05-08 | |
| Sell | null | 2026-05-08 | |
| Sell | null | 2026-05-08 | |
| Sell | null | 2026-05-08 | |
| Sell | null | 2026-05-08 |
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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.