Masco Corporation
MX ˙ BMV ˙ US5745991068
SecurityMX:MAS / Masco Corporation
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership17,077 shares
Latest Disclosed Value $ 1,031,195
Janus Henderson Group Plc reports 24.62% decrease in ownership of MAS / Masco Corporation

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 17,077 shares of Masco Corporation (MX:MAS) valued at $1,031,195 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 22,655 shares of Masco Corporation. This represents a change in shares of -24.62% 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)
2026-05-18 2026-03-31 13F/A-1 MASCO COM 574599106 17,077 -5,578 -24.62 1,031 -28.25 0.0002
2026-05-15 2026-03-31 13F MASCO COM 574599106 17,077 -5,578 -24.62 1,031 -28.25 0.0002
2026-02-17 2025-12-31 13F MASCO COM 574599106 22,655 410 1.84 1,438 -8.18 0.0006
2025-11-14 2025-09-30 13F MASCO COM 574599106 22,245 -2,116 -8.69 1,565 -0.13 0.0007
2025-08-14 2025-06-30 13F MASCO COM 574599106 24,361 -875 -3.47 1,568 -9.53 0.0008
2025-05-15 2025-03-31 13F MASCO COM 574599106 25,236 184 0.73 1,733 -4.73 0.0009
2025-02-14 2024-12-31 13F MASCO COM 574599106 25,052 -705 -2.74 1,818 -15.87 0.0009
2024-11-14 2024-09-30 13F MASCO COM 574599106 25,757 0 0.00 2,162 26.01 0.0011
2024-08-14 2024-06-30 13F MASCO COM 574599106 25,757 -6,660 -20.54 1,715 -32.85 0.0009
2024-05-15 2024-03-31 13F MASCO COM 574599106 32,417 3 0.01 2,555 17.64 0.0014
2024-02-14 2023-12-31 13F MASCO COM 574599106 32,414 -179 -0.55 2,171 24.63 0.0013
2023-11-14 2023-09-30 13F MASCO COM 574599106 32,593 586 1.83 1,742 -5.07 0.0011
2023-08-14 2023-06-30 13F MASCO COM 574599106 32,007 -62,771 -66.23 1,836 -61.05 0.0011
2023-05-15 2023-03-31 13F MASCO COM 574599106 94,778 14,234 17.67 4,712 25.36 0.0031
2023-02-14 2022-12-31 13F MASCO COM 574599106 80,544 -102,770 -56.06 3,759 -56.09 0.0027
2023-01-13 2022-09-30 13F/A-1 MASCO COM 574599106 183,314 147,734 415.22 8,559 375.50 0.0064
2022-11-14 2022-09-30 13F MASCO COM 574599106 183,314 147,734 8,559 0.0064
2022-08-15 2022-06-30 13F MASCO COM 574599106 35,580 -42,074 -54.18 1,800 -54.56 0.0012
2022-05-16 2022-03-31 13F MASCO COM 574599106 77,654 20,922 36.88 3,961 -0.58 0.0019
2022-02-14 2021-12-31 13F MASCO COM 574599106 56,732 -8,860 -13.51 3,984 9.36 0.0017
2021-11-16 2021-09-30 13F MASCO COM 574599106 65,592 -102 -0.16 3,643 -5.84 0.0016
2021-08-16 2021-06-30 13F MASCO COM 574599106 65,694 -6,487 -8.99 3,869 -10.52 0.0017
2021-05-17 2021-03-31 13F MASCO COM 574599106 72,181 -24,919 -25.66 4,324 -18.90 0.0020
2021-02-16 2020-12-31 13F MASCO COM 574599106 97,100 -6,914 -6.65 5,332 -7.01 0.0025
2020-11-16 2020-09-30 13F MASCO COM 574599106 104,014 -81,428 -43.91 5,734 -38.42 0.0030
2020-08-14 2020-06-30 13F MASCO COM 574599106 185,442 -425,025 -69.62 9,311 -55.88 0.0052
2020-05-14 2020-03-31 13F MASCO COM 574599106 610,467 260,463 74.42 21,103 25.64 0.0145
2020-02-18 2019-12-31 13F MASCO COM 574599106 350,004 -10,460 -2.90 16,797 11.80 0.0086
2019-11-14 2019-09-30 13F MASCO COM 574599106 360,464 149,746 71.06 15,024 81.69 0.0081
2019-07-31 2019-06-30 13F MASCO COM 574599106 210,718 126,298 149.61 8,269 149.14 0.0045
2019-04-30 2019-03-31 13F MASCO COM 574599106 84,420 146 0.17 3,319 34.65 0.0018
2019-02-06 2018-12-31 13F MASCO COM 574599106 84,274 -372,008 -81.53 2,465 -85.24 0.0016
2018-11-09 2018-09-30 13F MASCO COM 574599106 456,282 -1,366,894 -74.97 16,698 -75.52 0.0089
2018-08-10 2018-06-30 13F MASCO COM 574599106 1,823,176 1,193,132 189.37 68,217 167.74 0.0389
2018-05-14 2018-03-31 13F MASCO COM 574599106 630,044 503,548 398.07 25,479 358.34 0.0150
2018-03-12 2017-12-31 13F/A-1 MASCO COM 574599106 126,496 1,600 1.28 5,559 14.08 0.0034
2018-02-09 2017-12-31 13F MASCO COM 574599106 126,496 1,600 5,559
2017-11-14 2017-09-30 13F MASCO COM 574599106 124,896 -253,763 -67.02 4,873 -66.32 0.0031
2017-08-17 2017-06-30 13F/A-1 MASCO COM 574599106 378,659 330,291 682.87 14,469 779.57 0.0099
2017-08-14 2017-06-30 13F MASCO COM 574599106 378,659 330,291 14,469
2017-05-03 2017-03-31 13F MASCO COM 574599106 48,368 1,300 2.76 1,645 10.48 0.0115
2017-01-30 2016-12-31 13F MASCO COM 574599106 47,068 5,100 12.15 1,489 3.40 0.0110
2016-10-24 2016-09-30 13F MASCO COM 574599106 41,968 -7,507 -15.17 1,440 -5.94 0.0106
2016-07-29 2016-06-30 13F MASCO COM 574599106 49,475 0 0.00 1,531 -1.61 0.0127
2016-05-12 2016-03-31 13F MASCO COM 574599106 49,475 0 0.00 1,556 11.14 0.0126
2016-02-03 2015-12-31 13F MASCO COM 574599106 49,475 0 0.00 1,400 12.36 0.0112
2015-11-16 2015-09-30 13F MASCO COM 574599106 49,475 0 0.00 1,246 -5.61 0.0110
2015-08-17 2015-06-30 13F MASCO COM 574599106 49,475 0 0.00 1,320 -0.08 0.0104
2015-06-02 2015-03-31 13F/A-1 MASCO COM 574599106 49,475 0 0.00 1,321 5.93 0.0102
2015-05-15 2015-03-31 13F MASCO COM 574599106 49,475 1,321
2015-02-12 2014-12-31 13F MASCO COM 574599106 49,475 0 0.00 1,247 5.32 0.0090
2014-11-12 2014-09-30 13F MASCO COM 574599106 49,475 0 0.00 1,184 7.73 0.0111
2014-08-13 2014-06-30 13F MASCO COM 574599106 49,475 5,444 12.36 1,099 12.37 0.0103
2014-05-08 2014-03-31 13F MASCO COM 574599106 44,031 3,100 7.57 978 4.94 0.0095
2014-01-14 2013-12-31 13F MASCO COM 574599106 40,931 0 0.00 932 7.00 0.0094
2013-11-12 2013-09-30 13F MASCO COM 574599106 40,931 0 0.00 871 5.32 0.0096
2013-08-15 2013-06-30 13F MASCO COM 574599106 40,931 40,931 827 0.0097
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.