Masco Corporation
MX ˙ BMV ˙ US5745991068
SecurityMX:MAS / Masco Corporation
InstitutionCornerstone Planning Group LLC
Latest Disclosed Ownership214 shares
Latest Disclosed Value $ 15,068
Cornerstone Planning Group LLC reports 51.77% increase in ownership of MAS / Masco Corporation

On May 6, 2026 - Cornerstone Planning Group LLC filed a 13F-HR form disclosing ownership of 214 shares of Masco Corporation (MX:MAS) valued at $15,068 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 141 shares of Masco Corporation. This represents a change in shares of 51.77% 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)
2026-05-06 2026-03-31 13F MASCO CORP COM Common Stock 574599106 214 73 51.77 15 66.67 0.0020
2026-02-02 2025-12-31 13F MASCO CORP COM Common Stock 574599106 141 -11 -7.24 9 0.00 0.0015
2025-11-04 2025-09-30 13F MASCO CORP COM Common Stock 574599106 152 10 7.04 10 0.00 0.0016
2025-08-11 2025-06-30 13F MASCO CORP COM Common Stock 574599106 142 -149 -51.20 10 -47.06 0.0020
2025-04-30 2025-03-31 13F MASCO CORP COM Common Stock 574599106 291 99 51.56 17 13.33 0.0041
2025-01-29 2024-12-31 13F MASCO CORP COM Common Stock 574599106 192 15 8.47 16 7.14 0.0039
2024-11-05 2024-09-30 13F MASCO CORP COM Common Stock 574599106 177 -62 -25.94 14 -17.65 0.0038
2024-08-13 2024-06-30 13F MASCO CORP COM Common Stock 574599106 239 18 8.14 18 13.33 0.0050
2024-05-07 2024-03-31 13F MASCO CORP COM Common Stock 574599106 221 -8 -3.49 15 0.00 0.0048
2024-02-12 2023-12-31 13F MASCO Common Stock 574599106 229 -6 -2.55 15 25.00 0.0051
2023-11-08 2023-09-30 13F MASCO COMMON STOCK 574599106 235 -2 -0.84 13 -7.69 0.0048
2023-08-15 2023-06-30 13F MASCO CORP COM COM 574599106 237 100 72.99 14 116.67 0.0054
2023-02-14 2022-12-31 13F MASCO CORP COM COM 574599106 137 137 7 0.0028
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.