Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in MAS held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | Kentucky Farm Bureau Mutual Insurance Co | 25K | $1.37B | β | 0.012% | 0.03% |
| 2 | BlackRock, Inc. | 15.6M | $942.9M | -5.3% | 7.742% | 0.02% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 13.2M | $798.4M | β | 6.556% | 0.02% |
| 4 | VANGUARD PORTFOLIO MANAGEMENT LLC | 12.4M | $745.7M | β | 6.123% | 0.04% |
| 5 | STATE STREET CORP | 10.0M | $601.2M | -2.7% | 4.937% | 0.02% |
| 6 | HARRIS ASSOCIATES L P | 8.6M | $519.0M | -25.3% | 4.261% | 0.69% |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | 5.4M | $322.0M | +0.8% | 2.654% | 0.02% |
| 8 | Boston Partners | 4.5M | $271.2M | -21.6% | 2.227% | 0.28% |
| 9 | NORDEA INVESTMENT MANAGEMENT AB | 4.5M | $265.3M | +3.0% | 2.232% | 0.25% |
| 10 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 4.3M | $264.5M | -3.5% | 2.143% | 0.09% |
| 11 | WELLINGTON MANAGEMENT GROUP LLP | 4.2M | $255.7M | -12.3% | 2.099% | 0.05% |
| 12 | Invesco Ltd. | 3.8M | $228.7M | +11.2% | 1.878% | 0.04% |
| 13 | NORTHERN TRUST CORP | 3.3M | $198.0M | -3.5% | 1.626% | 0.03% |
| 14 | MORGAN STANLEY | 2.8M | $166.5M | +0.1% | 1.367% | 0.01% |
| 15 | Holocene Advisors, LP | 2.6M | $158.2M | -36.4% | 1.299% | 0.38% |
| 16 | Pictet Asset Management Holding SA | 2.5M | $150.9M | -24.3% | 1.239% | 0.16% |
| 17 | Nuveen, LLC | 2.4M | $145.4M | +35.6% | 1.194% | 0.04% |
| 18 | Impax Asset Management Group plc | 2.4M | $143.5M | -12.3% | 1.178% | 1.00% |
| 19 | FIDUCIARY MANAGEMENT INC /WI/ | 2.4M | $143.0M | -10.2% | 1.174% | 1.77% |
| 20 | JACOBS LEVY EQUITY MANAGEMENT, INC | 2.3M | $141.8M | -9.4% | 1.165% | 0.60% |
| 21 | EARNEST PARTNERS LLC | 2.2M | $131.6M | -1.9% | 1.080% | 0.54% |
| 22 | Amundi | 2.2M | $130.0M | +17.5% | 1.067% | 0.04% |
| 23 | DEUTSCHE BANK AG\ | 2.1M | $125.1M | -12.3% | 1.028% | 0.04% |
| 24 | BANK OF AMERICA CORP /DE/ | 2.0M | $121.1M | -1.1% | 0.994% | 0.01% |
| 25 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 2.0M | $119.2M | +1.4% | 0.979% | 0.02% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in MAS β a direct measure of their conviction.
Filings activity in MAS during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new MAS position in Q1 2026
Institutions that fully closed their MAS position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 821 | 0.4% | 82.21% | 5.14 pp | $12.28B | 5.9% |
| Q4 2025 | 824 | 2.9% | 87.35% | 1.75 pp | $13.05B | 2.0% |
| Q3 2025 | 849 | +1.3% | 89.10% | 13.63 pp | $13.31B | 13% |
| Q2 2025 | 838 | 0.4% | 102.73% | +18.02 pp | $15.34B | +21% |
| Q1 2025 | 841 | +1.2% | 84.71% | 17.81 pp | $12.65B | 17% |
| Q4 2024 | 831 | +1.7% | 102.52% | +0.90 pp | $15.31B | +0.9% |
| Q3 2024 | 817 | +5.0% | 101.62% | +15.01 pp | $15.18B | +17% |
| Q2 2024 | 778 | β | 86.61% | β | $12.93B | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying MAS stock.
Based on Q1 2026 13F filings, institutional ownership of Masco Corporation stands at 82.2%, held across 821 reporting institutions.
Kentucky Farm Bureau Mutual Insurance Co is the largest reported institutional holder of MAS, with approximately 25,000 shares worth $1.37B as of Q1 2026.
No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of MAS.
Our composite Smart Money Score for MAS is 23 out of 100 (Bearish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
110 institutions opened new positions in MAS during Q1 2026, while 113 fully exited. 186 added to existing positions and 518 trimmed.
MAS institutional ownership fell by 5.14 percentage points quarter-over-quarter, with a net change of -3 holders.
The top 10 institutions account for 49.7% of all reported 13F value in MAS, and the top 25 account for 68.9%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Masco Corporation (MAS) Institutional Ownership