Who owns Masco (MAS)
Which tracked institutional funds hold MAS, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MAS company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-18). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on MAS is one-sided between 2026-Q1 and 2026-Q2: 18 added or opened and 433 trimmed or exited — on balance reducing.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
MAS’s largest tracked holder by dollar value, VANGUARD GROUP INC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes MAS more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in MAS divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 832 tracked filers holding MAS, 381 increased or opened the position and 418 reduced or closed it; over the same quarter, open-market insider Form 4 buying and selling roughly offset.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in MAS between the 2026-Q1 and 2026-Q2 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 3
- MARSHALL WACE, LLP$7M
- BALYASNY ASSET MANAGEMENT L.P.$973K
- D. E. Shaw & Co., Inc.$869K
Full exits 431
- VANGUARD CAPITAL MANAGEMENT LLC$798M
- VANGUARD PORTFOLIO MANAGEMENT LLC$746M
- HARRIS ASSOCIATES L P$519M
- JPMORGAN CHASE & CO$389M
- VAN ECK ASSOCIATES CORP$353M
- GEODE CAPITAL MANAGEMENT, LLC$322M
Largest adds
- BlackRock, Inc.$585M
- STATE STREET CORP$272M
- AQR CAPITAL MANAGEMENT LLC$128M
- Invesco Ltd.$79M
- NORGES BANK$55M
- WELLINGTON MANAGEMENT GROUP LLP$53M
Largest trims
- RENAISSANCE TECHNOLOGIES LLC$13M
- TWO SIGMA INVESTMENTS, LP$1M
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| BlackRock, Inc. added | 15,717,623 | $1.3B | 9.1% | 2026-Q2 |
| STATE STREET CORP added | 10,726,032 | $873M | 6.2% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 13,224,747 | $798M | 5.7% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 12,351,666 | $746M | 5.3% | 2026-Q1 |
| HARRIS ASSOCIATES L P trimmed | 8,596,734 | $519M | 3.7% | 2026-Q1 |
| JPMORGAN CHASE & CO added | 6,641,369 | $389M | 2.8% | 2026-Q1 |
| VAN ECK ASSOCIATES CORP added | 5,842,483 | $353M | 2.5% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 5,354,444 | $322M | 2.3% | 2026-Q1 |
| WELLINGTON MANAGEMENT GROUP LLP trimmed | 3,789,629 | $308M | 2.2% | 2026-Q2 |
| Invesco Ltd. added | 3,578,620 | $291M | 2.1% | 2026-Q2 |
| Boston Partners trimmed | 4,492,021 | $271M | 1.9% | 2026-Q1 |
| NORDEA INVESTMENT MANAGEMENT AB added | 4,502,005 | $265M | 1.9% | 2026-Q1 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed | 4,323,794 | $265M | 1.9% | 2026-Q1 |
| NORTHERN TRUST CORP trimmed | 3,280,473 | $198M | 1.4% | 2026-Q1 |
| Beutel, Goodman & Co Ltd. trimmed | 3,166,441 | $191M | 1.4% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 2,329,073 | $188M | 1.3% | 2026-Q2 |
| NORGES BANK added | 2,182,005 | $178M | 1.3% | 2026-Q2 |
| MORGAN STANLEY added | 2,757,856 | $166M | 1.2% | 2026-Q1 |
| Holocene Advisors, LP trimmed | 2,619,767 | $158M | 1.1% | 2026-Q1 |
| Pictet Asset Management Holding SA trimmed | 2,500,075 | $151M | 1.1% | 2026-Q1 |
| Nuveen, LLC added | 2,408,623 | $145M | 1.0% | 2026-Q1 |
| Impax Asset Management Group plc trimmed | 2,377,161 | $144M | 1.0% | 2026-Q1 |
| FIDUCIARY MANAGEMENT INC /WI/ trimmed | 2,368,825 | $143M | 1.0% | 2026-Q1 |
| JACOBS LEVY EQUITY MANAGEMENT, INC trimmed | 2,349,411 | $142M | 1.0% | 2026-Q1 |
| Capital World Investors added | 1,668,946 | $136M | 1.0% | 2026-Q2 |
| EARNEST PARTNERS LLC trimmed | 2,179,439 | $132M | 0.9% | 2026-Q1 |
| Amundi added | 2,152,818 | $130M | 0.9% | 2026-Q1 |
| DEUTSCHE BANK AG\ trimmed | 2,072,968 | $125M | 0.9% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ trimmed | 2,005,715 | $121M | 0.9% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 1,974,805 | $119M | 0.8% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 1,970,394 | $119M | 0.8% | 2026-Q1 |
| Bank of New York Mellon Corp added | 1,961,592 | $118M | 0.8% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 1,864,234 | $113M | 0.8% | 2026-Q1 |
| Quantinno Capital Management LP added | 1,542,720 | $93M | 0.7% | 2026-Q1 |
| SCHRODER INVESTMENT MANAGEMENT GROUP trimmed | 1,584,397 | $93M | 0.7% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 1,412,053 | $85M | 0.6% | 2026-Q1 |
| FIRST TRUST ADVISORS LP added | 1,242,163 | $75M | 0.5% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 1,229,671 | $74M | 0.5% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 1,145,137 | $69M | 0.5% | 2026-Q1 |
| Empower Advisory Group, LLC trimmed | 1,132,189 | $68M | 0.5% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 1,071,592 | $65M | 0.5% | 2026-Q1 |
| ENVESTNET ASSET MANAGEMENT INC added | 1,064,826 | $64M | 0.5% | 2026-Q1 |
| Pacer Advisors, Inc. added | 415,754 | $64M | 0.5% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 683,900 | $56M | 0.4% | 2026-Q2 |
| Caisse de depot et placement du Quebec added | 848,075 | $51M | 0.4% | 2026-Q1 |
| Squarepoint Ops LLC added | 843,507 | $51M | 0.4% | 2026-Q1 |
| CONFLUENCE INVESTMENT MANAGEMENT LLC trimmed | 828,604 | $50M | 0.4% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 610,365 | $50M | 0.4% | 2026-Q2 |
| Eurizon Capital SGR S.p.A. added | 810,803 | $49M | 0.3% | 2026-Q1 |
| Legal & General Group Plc trimmed | 774,072 | $47M | 0.3% | 2026-Q1 |
| UBS Group AG trimmed | 770,208 | $46M | 0.3% | 2026-Q1 |
| FULLER & THALER ASSET MANAGEMENT, INC. added | 718,683 | $43M | 0.3% | 2026-Q1 |
| Boston Trust Walden Corp added | 713,598 | $43M | 0.3% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 524,422 | $43M | 0.3% | 2026-Q2 |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. added | 635,320 | $38M | 0.3% | 2026-Q1 |
| CITIGROUP INC added | 614,069 | $37M | 0.3% | 2026-Q1 |
| Swiss National Bank added | 609,600 | $37M | 0.3% | 2026-Q1 |
| Mitsubishi UFJ Asset Management Co., Ltd. added | 608,602 | $37M | 0.3% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 605,630 | $37M | 0.3% | 2026-Q1 |
| RAYMOND JAMES FINANCIAL INC added | 568,414 | $34M | 0.2% | 2026-Q1 |
| SEIZERT CAPITAL PARTNERS, LLC trimmed | 568,123 | $34M | 0.2% | 2026-Q1 |
| CAMBIAR INVESTORS LLC trimmed | 542,069 | $33M | 0.2% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS trimmed | 533,113 | $32M | 0.2% | 2026-Q1 |
| WORLDQUANT MILLENNIUM ADVISORS LLC added | 528,558 | $32M | 0.2% | 2026-Q1 |
| BARCLAYS PLC trimmed | 526,884 | $32M | 0.2% | 2026-Q1 |
| ARIEL INVESTMENTS, LLC added | 523,429 | $32M | 0.2% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 506,730 | $31M | 0.2% | 2026-Q1 |
| Woodline Partners LP added | 501,023 | $30M | 0.2% | 2026-Q1 |
| VICTORY CAPITAL MANAGEMENT INC trimmed | 478,037 | $29M | 0.2% | 2026-Q1 |
| FMR LLC added | 349,272 | $28M | 0.2% | 2026-Q2 |
| California Public Employees Retirement System added | 453,969 | $27M | 0.2% | 2026-Q1 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM trimmed | 447,696 | $27M | 0.2% | 2026-Q1 |
| Ensign Peak Advisors, Inc trimmed | 447,241 | $27M | 0.2% | 2026-Q1 |
| Gotham Asset Management, LLC added | 442,586 | $27M | 0.2% | 2026-Q1 |
| Haverford Trust Co added | 428,375 | $26M | 0.2% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 426,907 | $26M | 0.2% | 2026-Q1 |
| NEW YORK STATE COMMON RETIREMENT FUND trimmed | 414,024 | $25M | 0.2% | 2026-Q1 |
| DEROY & DEVEREAUX PRIVATE INVESTMENT COUNSEL INC trimmed | 407,197 | $25M | 0.2% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 405,841 | $25M | 0.2% | 2026-Q1 |
| Sumitomo Mitsui Trust Group, Inc. trimmed | 402,869 | $24M | 0.2% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ added | 298,835 | $24M | 0.2% | 2026-Q2 |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC trimmed | 418,666 | $24M | 0.2% | 2026-Q1 |
| Trexquant Investment LP added | 391,324 | $24M | 0.2% | 2026-Q1 |
| DekaBank Deutsche Girozentrale | 376,778 | $23M | 0.2% | 2026-Q1 |
| Mitsubishi UFJ Trust & Banking Corp added | 369,966 | $22M | 0.2% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN added | 362,121 | $22M | 0.2% | 2026-Q1 |
| SEI INVESTMENTS CO added | 347,326 | $21M | 0.1% | 2026-Q1 |
| HSBC HOLDINGS PLC trimmed | 344,908 | $21M | 0.1% | 2026-Q1 |
| ROYAL BANK OF CANADA trimmed | 343,685 | $21M | 0.1% | 2026-Q1 |
| VANGUARD GROUP INC trimmed | 27,823,347 | $1.8B | 12.5% | 2025-Q4 stale |
| Wealthquest Corp new | 1,477,255 | $112M | 0.8% | 2025-Q1 stale |
| Point72 Asset Management, L.P. trimmed | 1,339,189 | $94M | 0.7% | 2025-Q3 stale |
| LORD, ABBETT & CO. LLC trimmed | 742,253 | $52M | 0.4% | 2025-Q1 stale |
| 140 Summer Partners LP new | 668,746 | $47M | 0.3% | 2025-Q3 stale |
| Qube Research & Technologies Ltd trimmed | 573,153 | $40M | 0.3% | 2025-Q3 stale |
| TODD ASSET MANAGEMENT LLC trimmed | 539,991 | $34M | 0.2% | 2025-Q4 stale |
| PANAGORA ASSET MANAGEMENT INC trimmed | 379,967 | $26M | 0.2% | 2025-Q1 stale |
| Mediolanum International Funds Ltd added | 358,547 | $23M | 0.2% | 2025-Q4 stale |
| ADAGE CAPITAL PARTNERS GP, L.L.C. new | 293,100 | $21M | 0.1% | 2025-Q3 stale |
| Achmea Investment Management B.V. trimmed | 276,795 | $19M | 0.1% | 2025-Q3 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.