Masco Corporation
MX ˙ BMV ˙ US5745991068
SecurityMX:MAS / Masco Corporation
InstitutionWinton Capital Group Ltd
Latest Disclosed Ownership267,890 shares
Latest Disclosed Value $ 16,172,519
Winton Capital Group Ltd reports 2.47% decrease in ownership of MAS / Masco Corporation

On May 12, 2026 - Winton Capital Group Ltd filed a 13F-HR form disclosing ownership of 267,890 shares of Masco Corporation (MX:MAS) valued at $16,172,519 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 274,667 shares of Masco Corporation. This represents a change in shares of -2.47% 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)
2026-05-12 2026-03-31 13F MASCO COM 574599106 267,890 -6,777 -2.47 16,173 -7.22 0.5674
2026-02-11 2025-12-31 13F MASCO COM 574599106 274,667 8,586 3.23 17,430 -6.94 0.6017
2025-11-13 2025-09-30 13F MASCO COM 574599106 266,081 259,633 4,026.57 18,729 4,423.91 0.7011
2025-08-14 2025-06-30 13F MASCO COM 574599106 6,448 6,448 415 0.0212
2024-02-12 2023-12-31 13F MASCO COM 574599106 0 -4,461 -100.00 0 -100.00
2023-11-13 2023-09-30 13F MASCO COM 574599106 4,461 430 10.67 238 3.03 0.0196
2023-08-14 2023-06-30 13F MASCO COM 574599106 4,031 4,031 231 0.0194
2023-02-14 2022-12-31 13F MASCO COM 574599106 0 -7,311 -100.00 0 -100.00
2022-11-10 2022-09-30 13F MASCO COM 574599106 7,311 7,311 341 0.0223
2022-05-11 2022-03-31 13F MASCO COM 574599106 0 -3,606 -100.00 0 -100.00
2022-02-10 2021-12-31 13F MASCO COM 574599106 3,606 3,606 253 0.0153
2020-10-30 2020-09-30 13F MASCO COM 574599106 0 -25,483 -100.00 0 -100.00
2020-08-05 2020-06-30 13F MASCO COM 574599106 25,483 25,483 1,280 0.0330
2020-05-11 2020-03-31 13F MASCO COM 574599106 0 -304,868 -100.00 0 -100.00
2020-02-13 2019-12-31 13F MASCO COM 574599106 304,868 -66,621 -17.93 14,631 -5.51 0.2053
2019-11-08 2019-09-30 13F MASCO COM 574599106 371,489 366,060 6,742.68 15,484 7,169.48 0.1831
2019-07-08 2019-06-30 13F MASCO COM 574599106 5,429 5,429 213 0.0041
2019-02-05 2018-12-31 13F MASCO COM 574599106 0 -15,312 -100.00 0 -100.00
2018-11-02 2018-09-30 13F MASCO COM 574599106 15,312 -2,883 -15.85 560 -17.77 0.0117
2018-08-20 2018-06-30 13F MASCO COM 574599106 18,195 -24,423 -57.31 681 -60.48 0.0174
2018-05-21 2018-03-31 13F MASCO COM 574599106 42,618 12,571 41.84 1,723 30.53 0.0487
2018-02-13 2017-12-31 13F MASCO COM 574599106 30,047 2,951 10.89 1,320 24.88 0.0382
2017-11-13 2017-09-30 13F MASCO COM 574599106 27,096 -25,003 -47.99 1,057 -46.91 0.0337
2017-08-17 2017-06-30 13F MASCO COM 574599106 52,099 -37,657 -41.95 1,991 -34.74 0.0585
2017-05-19 2017-03-31 13F/A-1 MASCO COM 574599106 89,756 -29,983 -25.04 3,051 -19.41 0.0830
2017-05-12 2017-03-31 13F MASCO COM 574599106 511,055 17,534
2017-02-13 2016-12-31 13F MASCO COM 574599106 119,739 -391,316 -76.57 3,786 -78.41 0.1250
2016-11-08 2016-09-30 13F MASCO COM 574599106 511,055 -370,322 -42.02 17,534 -35.70 0.3013
2016-08-12 2016-06-30 13F MASCO COM 574599106 881,377 -470,383 -34.80 27,270 -35.85 0.4505
2016-05-06 2016-03-31 13F MASCO COM 574599106 1,351,760 -1,405,482 -50.97 42,513 -45.52 0.4608
2016-02-08 2015-12-31 13F MASCO COM 574599106 2,757,242 561,518 25.57 78,030 41.13 0.6936
2015-11-10 2015-09-30 13F MASCO COM 574599106 2,195,724 601,139 37.70 55,288 30.00 0.4373
2015-08-06 2015-06-30 13F MASCO COM 574599106 1,594,585 356,519 28.80 42,528 28.65 0.3906
2015-05-12 2015-03-31 13F MASCO COM 574599106 1,238,066 1,175,588 1,881.60 33,056 2,000.13 0.2632
2015-03-16 2014-12-31 13F/A-1 MASCO COM 574599106 62,478 62,478 1,574 0.0195
2015-02-13 2014-12-31 13F MASCO COM 574599106 68,923 1,737
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.