Masco Corporation
US ˙ NYSE ˙ US5745991068

SecurityMAS / Masco Corporation
InstitutionCalamos Advisors LLC
Latest Disclosed Ownership143,750 shares
Latest Disclosed Value $ 8,678,188
Calamos Advisors LLC ownership in MAS / Masco Corporation

On May 4, 2026 - Calamos Advisors LLC filed a 13F-HR form disclosing ownership of 143,750 shares of Masco Corporation (US:MAS) valued at $8,678,188 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 143,750 shares of Masco Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $9,977,688 USD.

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)
2026-05-04 2026-03-31 13F MASCO COM 574599106 143,750 0 0.00 8,678 -4.87 0.0306
2026-01-29 2025-12-31 13F MASCO COM 574599106 143,750 -5,827 -3.90 9,122 -13.35 0.0343
2025-10-20 2025-09-30 13F MASCO COM 574599106 149,577 254 0.17 10,529 9.55 0.0389
2025-08-08 2025-06-30 13F MASCO COM 574599106 149,323 0 0.00 9,610 -7.44 0.0378
2025-04-29 2025-03-31 13F MASCO COM 574599106 149,323 1,663 1.13 10,384 -3.10 0.0452
2025-01-24 2024-12-31 13F MASCO COM 574599106 147,660 0 0.00 10,716 -13.55 0.0448
2024-11-07 2024-09-30 13F MASCO COM 574599106 147,660 -3,623 -2.39 12,395 22.88 0.0536
2024-07-25 2024-06-30 13F MASCO COM 574599106 151,283 -5,522 -3.52 10,086 -18.45 0.0448
2024-05-08 2024-03-31 13F MASCO COM 574599106 156,805 -3,944 -2.45 12,369 14.88 0.0586
2024-01-31 2023-12-31 13F MASCO COM 574599106 160,749 -2,100 -1.29 10,767 23.69 0.0522
2023-10-26 2023-09-30 13F MASCO COM 574599106 162,849 0 0.00 8,704 -6.85 0.0452
2023-07-28 2023-06-30 13F MASCO COM 574599106 162,849 0 0.00 9,344 15.42 0.0462
2023-05-04 2023-03-31 13F MASCO COM 574599106 162,849 -20,358 -11.11 8,097 -5.31 0.0395
2023-01-26 2022-12-31 13F MASCO COM 574599106 183,207 -32,392 -15.02 8,550 -15.06 0.0401
2022-10-24 2022-09-30 13F MASCO COM 574599106 215,599 0 0.00 10,066 -7.73 0.0460
2022-08-01 2022-06-30 13F MASCO COM 574599106 215,599 5,805 2.77 10,909 1.96 0.0470
2022-05-03 2022-03-31 13F MASCO COM 574599106 209,794 27,926 15.36 10,699 -16.22 0.0402
2022-02-01 2021-12-31 13F MASCO COM 574599106 181,868 7,039 4.03 12,771 31.50 0.0477
2021-10-26 2021-09-30 13F MASCO COM 574599106 174,829 15,423 9.68 9,712 3.42 0.0424
2021-07-22 2021-06-30 13F MASCO COM 574599106 159,406 36,249 29.43 9,391 27.30 0.0429
2021-04-12 2021-03-31 13F MASCO COM 574599106 123,157 -230,420 -65.17 7,377 -62.02 0.0402
2021-01-27 2020-12-31 13F MASCO COM 574599106 353,577 -9,757 -2.69 19,422 -3.04 0.1127
2020-10-26 2020-09-30 13F MASCO COM 574599106 363,334 -364,646 -50.09 20,031 -45.20 0.1289
2020-07-27 2020-06-30 13F MASCO COM 574599106 727,980 126,917 21.12 36,552 75.91 0.2584
2020-04-28 2020-03-31 13F MASCO COM 574599106 601,063 -438,546 -42.18 20,779 -58.35 0.1630
2020-01-15 2019-12-31 13F MASCO COMMON STOCK 574599106 1,039,609 45,680 4.60 49,891 20.43 0.2467
2019-10-21 2019-09-30 13F MASCO COMMON STOCK 574599106 993,929 540,154 119.04 41,427 132.66 0.2256
2019-08-07 2019-06-30 13F MASCO COMMON STOCK 574599106 453,775 0 0.00 17,806 -0.18 0.0989
2019-04-12 2019-03-31 13F MASCO COMMON STOCK 574599106 453,775 3,775 0.84 17,838 35.57 0.1113
2019-01-24 2018-12-31 13F MASCO COMMON STOCK 574599106 450,000 0 0.00 13,158 -20.11 0.0868
2018-10-22 2018-09-30 13F MASCO COMMON STOCK 574599106 450,000 0 0.00 16,470 -2.19 0.0906
2018-07-17 2018-06-30 13F MASCO COMMON STOCK 574599106 450,000 -155,448 -25.67 16,839 -31.23 0.1029
2018-04-13 2018-03-31 13F MASCO COMMON STOCK 574599106 605,448 -424,060 -41.19 24,485 -45.87 0.1593
2018-02-13 2017-12-31 13F MASCO COMMON STOCK 574599106 1,029,508 -66,263 -6.05 45,237 5.83 0.2306
2017-10-25 2017-09-30 13F MASCO COMMON STOCK 574599106 1,095,771 106,583 10.77 42,746 13.09 0.3306
2017-08-09 2017-06-30 13F MASCO COMMON STOCK 574599106 989,188 223,177 29.13 37,797 45.17 0.2794
2017-04-20 2017-03-31 13F MASCO COMMON STOCK 574599106 766,011 -10,144 -1.31 26,037 6.09 0.2050
2017-02-06 2016-12-31 13F MASCO COMMON STOCK 574599106 776,155 -605,102 -43.81 24,542 -48.21 0.1951
2016-11-14 2016-09-30 13F MASCO COMMON STOCK 574599106 1,381,257 -17,654 -1.26 47,391 9.49 0.3387
2016-07-26 2016-06-30 13F MASCO COMMON STOCK 574599106 1,398,911 877,805 168.45 43,282 164.09 0.3036
2016-04-25 2016-03-31 13F MASCO COMMON STOCK 574599106 521,106 4,436 0.86 16,389 12.08 0.1087
2016-02-05 2015-12-31 13F MASCO COMMON STOCK 574599106 516,670 0 0.00 14,622 12.39 0.0929
2015-11-10 2015-09-30 13F MASCO COMMON STOCK 574599106 516,670 23 0.00 13,010 -5.58 0.0897
2015-08-14 2015-06-30 13F MASCO COMMON STOCK 574599106 516,647 -3,759 -0.72 13,779 -0.83 0.0851
2015-05-13 2015-03-31 13F MASCO COMMON STOCK 574599106 520,406 41 0.01 13,895 5.96 0.0871
2015-02-13 2014-12-31 13F MASCO COMMON STOCK 574599106 520,365 365 0.07 13,113 5.43 0.0867
2014-11-14 2014-09-30 13F MASCO COMMON STOCK 574599106 520,000 0 0.00 12,438 7.74 0.0830
2014-08-14 2014-06-30 13F MASCO COMMON STOCK 574599106 520,000 0 0.00 11,544 -0.04 0.0732
2014-05-16 2014-03-31 13F MASCO COMMON STOCK 574599106 520,000 0 0.00 11,549 -2.46 0.0738
2014-02-14 2013-12-31 13F MASCO COMMON STOCK 574599106 520,000 0 0.00 11,840 6.99 0.0753
2013-11-14 2013-09-30 13F MASCO COMMON STOCK 574599106 520,000 70,000 15.56 11,066 26.17 0.0694
2013-08-12 2013-06-30 13F MASCO COMMON STOCK 574599106 450,000 450,000 8,771 0.0573
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.