How many shares of MAS does Boston Partners own?

As of 2026-Q1, Boston Partners holds 4.5M shares of MAS (MASCO CORP).

What is Boston Partners's MAS position worth?

As of 2026-Q1, Boston Partners's MAS position is worth $271.2M.

In 2026-Q1, Boston Partners decreased their MAS position (-21.6% change in shares).

Based on available 13F filings, Boston Partners first reported a position in MAS in 2018-Q4. They have held the position across 30 quarters.

Position history for Boston Partners's holdings in MASCO CORP

Current Value

$271.2M

Current Shares

4.5M

Total Value Change

+$23.5M

Total Shares Change

-4M

Quarter-by-Quarter History

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q1 Latest	Decreased	4.5M	-21.6%	$271.2M	0.3%	$68.03	0
2025-Q4	Decreased	5.7M	-2.0%	$363.8M	0.4%	$64.20	0
2025-Q3	Increased	5.9M	+1.0%	$411.8M	0.4%	$69.69	38
2025-Q2	Increased	5.8M	+16.3%	$372.9M	0.4%	$63.56	43
2025-Q1	Decreased	5M	-35.9%	$346.2M	0.4%	$67.69	0
2024-Q4	Decreased	7.8M	-13.5%	$565M	0.7%	$71.19	0
2024-Q3	Decreased	9M	-0.9%	$754.2M	0.9%	$81.74	0
2024-Q2	Increased	9.1M	+14.3%	$605.3M	0.8%	$64.96	51
2024-Q1	Decreased	7.9M	-13.6%	$624.4M	0.7%	$76.54	0
2023-Q4	Increased	9.2M	+1.8%	$615.3M	0.8%	$64.74	45
2023-Q3	Increased	9M	+4.2%	$481.9M	0.7%	$51.40	46
2023-Q2	Decreased	8.7M	-0.6%	$497.4M	0.7%	$54.87	0
2023-Q1	Decreased	8.7M	-13.3%	$433.8M	0.6%	$46.08	0
2022-Q4	Increased	10.1M	+21.6%	$471.2M	0.6%	$44.17	53
2022-Q3	Increased	8.3M	+91.0%	$385.3M	0.6%	$44.47	69
2022-Q2	Increased	4.3M	+13.5%	$219M	0.3%	$47.21	42
2022-Q1	Increased	3.8M	+17.7%	$194.4M	0.2%	$49.67	43
2021-Q4	Decreased	3.2M	-2.4%	$227.4M	0.3%	$64.54	0
2021-Q3	Increased	3.3M	+3.2%	$184.3M	0.2%	$51.40	38
2021-Q2	Increased	3.2M	+2.5%	$189.4M	0.2%	$53.46	37
2021-Q1	Decreased	3.1M	-9.7%	$188M	0.3%	$54.97	0
2020-Q4	Increased	3.5M	+1.2%	$191M	0.3%	$50.04	37
2020-Q3	Unchanged	3.4M	0.0%	$172.5M	0.3%	$51.14	0
2020-Q2	Decreased	3.4M	-3.8%	$172.5M	0.3%	$44.43	0
2020-Q1	Increased	3.6M	+16.7%	$123.4M	0.2%	$31.95	42
2019-Q4	Increased	3.1M	+0.1%	$146.8M	0.2%	$43.43	36
2019-Q3	Decreased	3.1M	-31.4%	$127.5M	0.2%	$37.52	0
2019-Q2	Decreased	4.5M	-13.2%	$174.7M	0.2%	$35.22	0
2019-Q1	Decreased	5.1M	-39.4%	$201.6M	0.3%	$35.17	0
2018-Q4	New	8.5M	-	$247.7M	0.4%	$25.77	51

Other major holders of MAS: VANGUARD GROUP INC