MASCO CORP (MAS) Institutional Shareholders
MASCO CORP (MAS) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $11.33B in MAS holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of MAS tracked by InsiderSet, reporting ownership valued at approximately $942.89M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $1.12B, representing an estimated gain of +18.40% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 44% of the total disclosed MAS value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Capital Management Llc, Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in MASCO CORP (MAS).
This page ranks the largest institutional MAS shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
856
Total Reported Value
$11.33B
Largest Holder
Blackrock, Inc.
Largest Position
$942.89M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
44
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.02% | 15,618,560 | $942,892,448 | $1,116,414,669 | +$173,522,221 | +18.40% | |
| Vanguard Capital Management Llc | 0.02% | 13,224,747 | $798,377,976 | $945,304,916 | +$146,926,940 | +18.40% | |
| Vanguard Portfolio Management Llc | 0.04% | 12,351,666 | $745,670,076 | $882,897,086 | +$137,227,010 | +18.40% | |
| State Street Corp | 0.02% | 9,959,319 | $601,244,088 | $711,892,122 | +$110,648,034 | +18.40% | |
| Harris Associates L P | 0.69% | 8,596,734 | $518,984,818 | $614,494,546 | +$95,509,728 | +18.40% | |
| Geode Capital Management, Llc | 0.02% | 5,354,444 | $321,975,021 | $382,735,657 | +$60,760,636 | +18.87% | |
| Boston Partners | 0.28% | 4,492,021 | $271,162,085 | $321,089,661 | +$49,927,576 | +18.41% | |
| Nordea Investment Management Ab | 0.25% | 4,502,005 | $265,348,175 | $321,803,317 | +$56,455,142 | +21.28% | |
| Massachusetts Financial Services Co | 0.09% | 4,323,794 | $264,540,422 | $309,064,795 | +$44,524,373 | +16.83% | |
| Wellington Management Group Llp | 0.05% | 4,235,338 | $255,687,355 | $302,741,960 | +$47,054,605 | +18.40% | |
| Invesco Ltd. | 0.04% | 3,787,957 | $228,678,975 | $270,763,166 | +$42,084,191 | +18.40% | |
| Northern Trust Corp | 0.03% | 3,280,473 | $198,042,155 | $234,488,210 | +$36,446,055 | +18.40% | |
| Storebrand Asset Management As | 0.07% | 3,645,847 | $196,764,243 | $260,605,144 | +$63,840,901 | +32.45% | |
| Morgan Stanley | 0.01% | 2,757,856 | $166,491,883 | $197,131,547 | +$30,639,664 | +18.40% | |
| Holocene Advisors, Lp | 0.38% | 2,619,767 | $158,155,334 | $187,260,945 | +$29,105,611 | +18.40% | |
| Nuveen, Llc | 0.04% | 2,408,623 | $145,408,570 | $172,168,372 | +$26,759,802 | +18.40% | |
| Impax Asset Management Group Plc | 1.00% | 2,377,161 | $143,509,210 | $169,919,468 | +$26,410,258 | +18.40% | |
| Fiduciary Management Inc | 1.77% | 2,368,825 | $143,005,965 | $169,323,611 | +$26,317,646 | +18.40% | |
| Jacobs Levy Equity Management, Inc | 0.60% | 2,349,411 | $141,833,942 | $167,935,898 | +$26,101,956 | +18.40% | |
| Pictet Asset Management Holding Sa | 0.13% | 1,715,002 | $139,543,798 | $122,588,343 | -$16,955,455 | -12.15% | |
| Earnest Partners Llc | 0.54% | 2,179,439 | $131,572,732 | $155,786,300 | +$24,213,568 | +18.40% | |
| Eurizon Capital Sgr S.P.A. | 0.35% | 1,613,023 | $131,020,406 | $115,298,884 | -$15,721,522 | -12.00% | |
| Amundi | 0.04% | 2,152,818 | $129,977,250 | $153,883,431 | +$23,906,181 | +18.39% | |
| Deutsche Bank Ag\ | 0.04% | 2,072,968 | $125,145,079 | $148,175,753 | +$23,030,674 | +18.40% | |
| Bank Of America Corp | 0.01% | 2,005,715 | $121,084,992 | $143,368,508 | +$22,283,516 | +18.40% | |
| Charles Schwab Investment Management Inc | 0.02% | 1,974,805 | $119,218,978 | $141,159,061 | +$21,940,083 | +18.40% | |
| Goldman Sachs Group Inc | 0.02% | 1,970,394 | $118,952,709 | $140,843,763 | +$21,891,054 | +18.40% | |
| Bank Of New York Mellon Corp | 0.02% | 1,961,592 | $118,421,331 | $140,214,596 | +$21,793,265 | +18.40% | |
| American Century Companies Inc | 0.06% | 1,864,234 | $112,543,954 | $133,255,446 | +$20,711,492 | +18.40% | |
| Capital World Investors | 0.01% | 1,625,000 | $98,101,250 | $116,155,000 | +$18,053,750 | +18.40% | |
| Quantinno Capital Management Lp | 0.16% | 1,542,720 | $93,134,039 | $110,273,626 | +$17,139,587 | +18.40% | |
| Schroder Investment Management Group | 0.08% | 1,584,397 | $92,845,664 | $113,252,698 | +$20,407,034 | +21.98% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.02% | 1,412,053 | $85,245,641 | $100,933,548 | +$15,687,907 | +18.40% | |
| First Trust Advisors Lp | 0.05% | 1,242,163 | $74,989,298 | $88,789,811 | +$13,800,513 | +18.40% | |
| Dimensional Fund Advisors Lp | 0.02% | 1,229,671 | $74,219,386 | $87,896,883 | +$13,677,497 | +18.43% | |
| Vanguard Fiduciary Trust Co | 0.02% | 1,145,137 | $69,131,921 | $81,854,393 | +$12,722,472 | +18.40% | |
| Renaissance Technologies LLC | Jim Simons | 0.11% | 1,134,114 | $68,466,462 | $81,066,469 | +$12,600,007 | +18.40% |
| Empower Advisory Group, Llc | 0.18% | 1,132,189 | $68,350,247 | $80,928,870 | +$12,578,623 | +18.40% | |
| Arrowstreet Capital, Limited Partnership | 0.04% | 1,071,592 | $64,692,009 | $76,597,396 | +$11,905,387 | +18.40% | |
| Envestnet Asset Management Inc | 0.02% | 1,064,826 | $64,283,531 | $76,113,762 | +$11,830,231 | +18.40% | |
| Confluence Investment Management Llc | 0.98% | 768,680 | $62,547,513 | $54,945,246 | -$7,602,267 | -12.15% | |
| Aqr Capital Management Llc | 0.03% | 1,004,689 | $59,959,868 | $71,815,170 | +$11,855,302 | +19.77% | |
| Caisse De Depot Et Placement Du Quebec | 0.08% | 848,075 | $51,198,288 | $60,620,401 | +$9,422,113 | +18.40% | |
| Squarepoint Ops Llc | 0.11% | 843,507 | $50,922,518 | $60,293,880 | +$9,371,362 | +18.40% | |
| Boston Trust Walden Corp | 0.37% | 602,943 | $49,061,444 | $43,098,366 | -$5,963,078 | -12.15% | |
| Cambiar Investors Llc | 2.03% | 574,533 | $46,749,750 | $41,067,619 | -$5,682,131 | -12.15% | |
| Legal & General Group Plc | 0.01% | 774,072 | $46,730,725 | $55,330,667 | +$8,599,942 | +18.40% | |
| Ubs Group Ag | 0.01% | 770,208 | $46,497,457 | $55,054,468 | +$8,557,011 | +18.40% | |
| Fuller & Thaler Asset Management, Inc. | 0.15% | 718,683 | $43,386,875 | $51,371,461 | +$7,984,586 | +18.40% | |
| Citigroup Inc | 0.02% | 614,069 | $37,071,321 | $43,893,652 | +$6,822,331 | +18.40% |
Frequently asked questions about MAS
Who owns the most MAS stock?
The largest holders of MAS are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for MASCO CORP (MAS).
Is MAS widely held by superinvestors?
Many widely followed stocks like MAS appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly MAS is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.