Masco Corporation
MX ˙ BMV ˙ US5745991068
SecurityMX:MAS / Masco Corporation
InstitutionAviva Plc
Latest Disclosed Ownership77,619 shares
Latest Disclosed Value $ 4,685,859
Aviva Plc reports 1.65% decrease in ownership of MAS / Masco Corporation

On May 14, 2026 - Aviva Plc filed a 13F-HR form disclosing ownership of 77,619 shares of Masco Corporation (MX:MAS) valued at $4,685,859 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 78,918 shares of Masco Corporation. This represents a change in shares of -1.65% 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.

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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)
2026-05-14 2026-03-31 13F MASCO COM 574599106 77,619 -1,299 -1.65 4,686 -6.45 0.0079
2026-02-12 2025-12-31 13F MASCO COM 574599106 78,918 -3,973 -4.79 5,008 -14.16 0.0084
2025-11-13 2025-09-30 13F MASCO COM 574599106 82,891 6,373 8.33 5,835 18.48 0.0106
2025-08-07 2025-06-30 13F MASCO COM 574599106 76,518 68,301 831.22 4,925 762.35 0.0102
2025-05-15 2025-03-31 13F MASCO COM 574599106 8,217 -151 -1.80 571 -5.93 0.0014
2025-02-13 2024-12-31 13F MASCO COM 574599106 8,368 -32 -0.38 607 -13.90 0.0016
2024-11-14 2024-09-30 13F MASCO COM 574599106 8,400 -188 -2.19 705 23.25 0.0018
2024-08-02 2024-06-30 13F MASCO COM 574599106 8,588 -5,756 -40.13 573 -49.43 0.0016
2024-05-14 2024-03-31 13F MASCO COM 574599106 14,344 -720 -4.78 1,131 12.20 0.0037
2024-02-09 2023-12-31 13F MASCO COM 574599106 15,064 6,452 74.92 1,009 119.13 0.0036
2023-11-13 2023-09-30 13F MASCO COM 574599106 8,612 -7,388 -46.17 460 -49.89 0.0019
2023-08-10 2023-06-30 13F MASCO COM 574599106 16,000 -24,031 -60.03 918 -53.87 0.0037
2023-05-12 2023-03-31 13F MASCO COM 574599106 40,031 -373,041 -90.31 1,990 -89.68 0.0090
2023-02-14 2022-12-31 13F/A-2 MASCO COM 574599106 413,072 -74,504 -15.28 19,278 -15.32 0.0948
2023-02-10 2022-12-31 13F/A-1 MASCO COM 574599106 413,072 -74,504 31,105 0.1483
2023-02-09 2022-12-31 13F MASCO COM 574599106 413,072 -74,504 19 0.0926
2022-11-14 2022-09-30 13F MASCO COM 574599106 487,576 -13,173 -2.63 22,765 -10.15 0.1312
2022-08-04 2022-06-30 13F MASCO COM 574599106 500,749 72,099 16.82 25,338 15.91 0.1348
2022-05-13 2022-03-31 13F MASCO COM 574599106 428,650 164,774 62.44 21,861 17.98 0.1093
2022-02-10 2021-12-31 13F MASCO COM 574599106 263,876 122,345 86.44 18,529 135.68 0.0777
2021-11-12 2021-09-30 13F MASCO COM 574599106 141,531 -235,253 -62.44 7,862 -64.58 0.0351
2021-08-10 2021-06-30 13F MASCO COM 574599106 376,784 -343,994 -47.73 22,196 -48.59 0.0974
2021-05-13 2021-03-31 13F MASCO COM 574599106 720,778 87,575 13.83 43,175 24.13 0.2109
2021-02-10 2020-12-31 13F MASCO COM 574599106 633,203 10,627 1.71 34,782 1.34 0.1809
2020-11-12 2020-09-30 13F MASCO COM 574599106 622,576 -4,765 -0.76 34,323 8.97 0.2025
2020-08-13 2020-06-30 13F/A-1 MASCO COM 574599106 627,341 -142,537 -18.51 31,499 18.36 0.1964
2020-08-13 2020-06-30 13F MASCO COM 574599106 627,341 -142,537 31,499 95,360.9829
2020-05-14 2020-03-31 13F MASCO COM 574599106 769,878 -27,057 -3.40 26,614 -30.41 0.1950
2020-02-10 2019-12-31 13F MASCO COM 574599106 796,935 45,850 6.10 38,245 22.17 0.2316
2019-11-12 2019-09-30 13F MASCO COM 574599106 751,085 642,609 592.40 31,305 635.38 0.2122
2019-07-30 2019-06-30 13F MASCO COM 574599106 108,476 -2,724 -2.45 4,257 -2.61 0.0292
2019-05-14 2019-03-31 13F MASCO COM 574599106 111,200 -80,166 -41.89 4,371 -21.89 0.0293
2019-02-12 2018-12-31 13F MASCO COM 574599106 191,366 -30,962 -13.93 5,596 -31.23 0.0417
2018-11-13 2018-09-30 13F MASCO COM 574599106 222,328 66,237 42.43 8,137 39.31 0.0446
2018-08-01 2018-06-30 13F MASCO COM 574599106 156,091 -4,459 -2.78 5,841 -10.04 0.0345
2018-05-14 2018-03-31 13F MASCO COM 574599106 160,550 -13,594 -7.81 6,493 -15.15 0.0397
2018-02-13 2017-12-31 13F MASCO COM 574599106 174,144 -29,200 -14.36 7,652 -3.55 0.0433
2017-11-13 2017-09-30 13F MASCO COM 574599106 203,344 2,060 1.02 7,934 3.13 0.0427
2017-08-07 2017-06-30 13F MASCO COM 574599106 201,284 1,480 0.74 7,693 13.22 0.0430
2017-05-15 2017-03-31 13F MASCO COM 574599106 199,804 -16,932 -7.81 6,795 -0.88 0.0389
2017-02-13 2016-12-31 13F MASCO COM 574599106 216,736 15,044 7.46 6,855 -0.94 0.0409
2016-11-14 2016-09-30 13F MASCO COM 574599106 201,692 -26,564 -11.64 6,920 -2.05 0.0432
2016-08-05 2016-06-30 13F MASCO COM 574599106 228,256 28,912 14.50 7,065 12.68 0.0484
2016-05-12 2016-03-31 13F MASCO COM 574599106 199,344 2,164 1.10 6,270 12.37 0.0466
2016-02-11 2015-12-31 13F MASCO COM 574599106 197,180 -1,785 -0.90 5,580 11.38 0.0423
2015-11-12 2015-09-30 13F MASCO COM 574599106 198,965 -4,284 -2.11 5,010 5.16 0.0415
2015-08-06 2015-06-30 13F MASCO COM 574599106 203,249 -181,630 -47.19 4,764 -53.64 0.0337
2015-05-14 2015-03-31 13F MASCO COM 574599106 384,879 384,879 0.00 10,277 0.0704
2015-02-05 2014-12-31 13F/A-1 MASCO COM 574599106 0 -342,704 -100.00 0 -100.00
2014-11-13 2014-09-30 13F MASCO COM 574599106 342,704 50 0.01 8,197 7.76 0.0649
2014-08-13 2014-06-30 13F MASCO COM 574599106 342,654 193,470 129.69 7,607 129.61 0.0582
2014-05-14 2014-03-31 13F MASCO COM 574599106 149,184 8,810 6.28 3,313 3.66 0.0268
2014-02-13 2013-12-31 13F MASCO COM 574599106 140,374 3,464 2.53 3,196 9.72 0.0267
2013-11-13 2013-09-30 13F MASCO COM 574599106 136,910 30,607 28.79 2,913 40.59 0.0255
2013-08-01 2013-06-30 13F MASCO COM 574599106 106,303 106,303 2,072 0.0209
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.