Masco Corporation
MX ˙ BMV ˙ US5745991068
SecurityMX:MAS / Masco Corporation
InstitutionRhumbline Advisers
Latest Disclosed Ownership506,730 shares
Latest Disclosed Value $ 30,591,196
Rhumbline Advisers reports 0.99% decrease in ownership of MAS / Masco Corporation

On May 12, 2026 - Rhumbline Advisers filed a 13F-HR form disclosing ownership of 506,730 shares of Masco Corporation (MX:MAS) valued at $30,591,196 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 511,802 shares of Masco Corporation. This represents a change in shares of -0.99% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

Upgrade to unlock premium data and export to Excel .

Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-12 2026-03-31 13F MASCO CORP COM COM 574599106 506,730 -5,072 -0.99 30,591 -5.81 0.0262
2026-02-13 2025-12-31 13F MASCO CORP COM COM 574599106 511,802 -1,142 -0.22 32,479 -10.05 0.0263
2025-11-06 2025-09-30 13F MASCO CORP COM COM 574599106 512,944 -8,236 -1.58 36,106 7.64 0.0290
2025-08-12 2025-06-30 13F MASCO CORP COM COM 574599106 521,180 105,623 25.42 33,543 16.08 0.0287
2025-05-29 2025-03-31 13F/A-1 MASCO CORP COM COM 574599106 415,557 31,018 8.07 28,898 3.55 0.0270
2025-04-08 2025-03-31 13F MASCO CORP COM COM 574599106 415,557 31,018 28,898 0.0270
2025-05-29 2024-12-31 13F/A-1 MASCO CORP COM COM 574599106 384,539 -4,724 -1.21 27,906 -14.60 0.0250
2025-01-30 2024-12-31 13F MASCO CORP COM COM 574599106 384,539 -4,724 27,906 0.0250
2024-11-12 2024-09-30 13F MASCO CORP COM COM 574599106 389,263 -9,435 -2.37 32,675 22.92 0.0295
2024-08-01 2024-06-30 13F MASCO CORP COM COM 574599106 398,698 -11,308 -2.76 26,581 -17.81 0.0250
2024-05-09 2024-03-31 13F MASCO CORP COM COM 574599106 410,006 -3,677 -0.89 32,341 16.72 0.0311
2024-02-08 2023-12-31 13F MASCO CORP COM COM 574599106 413,683 -14,944 -3.49 27,708 20.94 0.0290
2023-11-09 2023-09-30 13F MASCO CORP COM COM 574599106 428,627 -1,985 -0.46 22,910 -7.28 0.0266
2023-08-08 2023-06-30 13F MASCO CORP COM COM 574599106 430,612 -11,738 -2.65 24,709 117,557.14 0.0277
2023-05-11 2023-03-31 13F MASCO CORP COM COM 574599106 442,350 8,953 2.07 22 -99.90 0.0271
2023-02-14 2022-12-31 13F MASCO CORP COM COM 574599106 433,397 10,080 2.38 20,227 2.34 0.0272
2022-11-10 2022-09-30 13F MASCO CORP COM COM 574599106 423,317 -1,193 -0.28 19,765 -7.98 0.0294
2022-08-11 2022-06-30 13F MASCO CORP COM COM 574599106 424,510 43,573 11.44 21,480 10.56 0.0313
2022-05-12 2022-03-31 13F MASCO CORP COM COM 574599106 380,937 6,614 1.77 19,428 -26.09 0.0250
2022-02-10 2021-12-31 13F MASCO CORP COM COM 574599106 374,323 370 0.10 26,285 26.53 0.0322
2021-11-12 2021-09-30 13F MASCO CORP COM COM 574599106 373,953 -30,292 -7.49 20,773 -12.77 0.0281
2021-08-05 2021-06-30 13F MASCO CORP COM COM 574599106 404,245 -1,886 -0.46 23,814 -2.11 0.0312
2021-05-06 2021-03-31 13F MASCO CORP COM COM 574599106 406,131 -31,462 -7.19 24,327 1.21 0.0331
2021-02-10 2020-12-31 13F MASCO CORP COM COM 574599106 437,593 -57,205 -11.56 24,037 -11.88 0.0332
2020-11-12 2020-09-30 13F MASCO CORP COM COM 574599106 494,798 -21,048 -4.08 27,278 5.32 0.0427
2020-08-13 2020-06-30 13F MASCO CORP COM COM 574599106 515,846 -71,598 -12.19 25,901 27.54 0.0433
2020-05-06 2020-03-31 13F MASCO CORP COM COM 574599106 587,444 62,922 12.00 20,308 -19.32 0.0426
2020-02-05 2019-12-31 13F MASCO CORP COM COM 574599106 524,522 2,488 0.48 25,172 15.69 0.0421
2019-10-23 2019-09-30 13F MASCO CORP COM COM 574599106 522,034 16,884 3.34 21,758 9.77 0.0398
2019-08-14 2019-06-30 13F MASCO CORP COM COM 574599106 505,150 -14,206 -2.74 19,822 -2.91 0.0372
2019-05-01 2019-03-31 13F MASCO CORP COM COM 574599106 519,356 -26,794 -4.91 20,416 27.85 0.0395
2019-01-31 2018-12-31 13F MASCO CORP COM COM 574599106 546,150 -39,376 -6.72 15,969 -25.48 0.0347
2018-11-07 2018-09-30 13F MASCO CORP COM COM 574599106 585,526 -14,090 -2.35 21,430 -4.49 0.0414
2018-08-06 2018-06-30 13F MASCO CORP COM COM 574599106 599,616 22,735 3.94 22,438 -3.82 0.0453
2018-05-02 2018-03-31 13F MASCO CORP COM COM 574599106 576,881 -10,600 -1.80 23,329 -9.63 0.0487
2018-02-09 2017-12-31 13F MASCO CORP COM COM 574599106 587,481 4,139 0.71 25,814 13.44 0.0524
2017-11-06 2017-09-30 13F MASCO CORP COM COM 574599106 583,342 -10,318 -1.74 22,756 0.32 0.0495
2017-08-02 2017-06-30 13F MASCO CORP COM COM 574599106 593,660 -4,819 -0.81 22,684 11.51 0.0518
2017-05-02 2017-03-31 13F MASCO CORP COM COM 574599106 598,479 3,971 0.67 20,342 8.21 0.0475
2017-01-27 2016-12-31 13F MASCO CORP COM COM 574599106 594,508 35,208 6.30 18,798 -2.04 0.0476
2016-11-08 2016-09-30 13F MASCO CORP COM COM 574599106 559,300 -9,873 -1.73 19,190 8.97 0.0529
2016-08-11 2016-06-30 13F MASCO CORP COM COM 574599106 569,173 5,083 0.90 17,610 -0.74 0.0522
2016-05-02 2016-03-31 13F MASCO CORP USD1. COM 574599106 564,090 109 0.02 17,741 11.15 0.0550
2016-02-03 2015-12-31 13F MASCO CORP USD1. COM 574599106 563,981 27,852 5.20 15,961 18.23 0.0514
2015-11-04 2015-09-30 13F MASCO CORP USD1. COM 574599106 536,129 12,973 2.48 13,500 -3.25 0.0459
2015-08-04 2015-06-30 13F MASCO CORP USD1. COM 574599106 523,156 8,867 1.72 13,953 1.61 0.0445
2015-05-12 2015-03-31 13F MASCO CORP USD1. COM 574599106 514,289 2,290 0.45 13,732 6.43 0.0396
2015-02-06 2014-12-31 13F MASCO CORP USD1. COM 574599106 511,999 -13,347 -2.54 12,902 2.67 0.0375
2014-11-12 2014-09-30 13F MASCO CORP USD1. COM 574599106 525,346 -5,881 -1.11 12,566 6.55 0.0377
2014-08-06 2014-06-30 13F MASCO CORP USD1. COM 574599106 531,227 -18,587 -3.38 11,793 -3.42 0.0346
2014-05-06 2014-03-31 13F MASCO CORP USD1. COM 574599106 549,814 -18,897 -3.32 12,211 -5.71 0.0362
2014-02-03 2013-12-31 13F MASCO CORP USD1. COM 574599106 568,711 -44,278 -7.22 12,950 -0.72 0.0382
2013-11-05 2013-09-30 13F MASCO CORP USD1. COM 574599106 612,989 11,855 1.97 13,044 11.33 0.0404
2013-08-07 2013-06-30 13F MASCO CORP USD1. COM 574599106 601,134 601,134 11,716 0.0376
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.