Company · Ownership research

MASCO CORP /DE/ MAS

CIK 0000062996 · CUSIP 574599106

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 574599106 (MAS), not CUSIP 574599906 (MAS), CUSIP 574599956 (MAS), and does not merge CUSIPs.

This page lists the top 20 of 877 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	VANGUARD GROUP INC CIK 102909 · View history	$1.98B 28,151,712 shares	0.03%	-721.06K(-2.50%)Reduced	SEC filing ↗ Nov 7, 2025	▾
02	BlackRock, Inc. CIK 2012383 · View history	$1.13B 16,048,121 shares	0.02%	-24.84K(-0.20%)Reduced	SEC filing ↗ Nov 12, 2025	▾
03	STATE STREET CORP CIK 93751 · View history	$716.22M 10,175,075 shares	0.02%	+367.94K(+3.80%)Added	SEC filing ↗ Nov 14, 2025	▾
04	HARRIS ASSOCIATES L P CIK 813917 · View history	$521.67M 7,411,192 shares	0.84%	+94.65K(+1.30%)Added	SEC filing ↗ Nov 14, 2025	▾
05	Boston Partners CIK 1386060 · View history	$411.83M 5,850,170 shares	0.42%	+58.61K(+1.00%)Added	SEC filing ↗ Nov 13, 2025	▾
06	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$372.55M 5,314,742 shares	0.02%	+18.53K(+0.30%)Added	SEC filing ↗ Nov 12, 2025	▾
07	JPMORGAN CHASE & CO CIK 19617 · Amended · View history	$357.98M 5,085,602 shares	0.02%	+1.24M(+32.30%)Added	SEC filing ↗ Nov 26, 2025	▾
08	MASSACHUSETTS FINANCIAL SERVICES CO /MA/ CIK 912938 · View history	$336.86M 4,785,659 shares	0.10%	-112.11K(-2.30%)Reduced	SEC filing ↗ Oct 29, 2025	▾
09	NORDEA INVESTMENT MANAGEMENT AB CIK 1218210 · View history	$286.40M 4,104,852 shares	0.25%	+793.59K(+24.00%)Added	SEC filing ↗ Oct 27, 2025	▾
10	Holocene Advisors, LP CIK 1700574 · View history	$278.40M 3,955,058 shares	0.64%	-1.05M(-20.90%)Reduced	SEC filing ↗ Nov 14, 2025	▾
11	Pictet Asset Management Holding SA CIK 1993888 · View history	$259.59M 3,688,003 shares	0.25%	+1.04M(+39.50%)Added	SEC filing ↗ Nov 18, 2025	▾
12	NORTHERN TRUST CORP CIK 73124 · View history	$238.91M 3,394,128 shares	0.03%	-98.08K(-2.80%)Reduced	SEC filing ↗ Nov 14, 2025	▾
13	VAN ECK ASSOCIATES CORP CIK 869178 · View history	$222.54M 3,161,610 shares	0.21%	-88.52K(-2.70%)Reduced	SEC filing ↗ Nov 13, 2025	▾
14	FIDUCIARY MANAGEMENT INC /WI/ CIK 764532 · View history	$203.42M 2,889,862 shares	2.06%	-126.14K(-4.20%)Reduced	SEC filing ↗ Nov 14, 2025	▾
15	Invesco Ltd. CIK 914208 · View history	$203.24M 2,887,295 shares	0.03%	-328.50K(-10.20%)Reduced	SEC filing ↗ Nov 13, 2025	▾
16	WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history	$192.95M 2,741,130 shares	0.03%	+2.74MNew	SEC filing ↗ Nov 14, 2025	▾
17	MORGAN STANLEY CIK 895421 · Amended · View history	$190.45M 2,705,684 shares	0.01%	+111.45K(+4.30%)Added	SEC filing ↗ May 27, 2026	▾
18	Beutel, Goodman & Co Ltd. CIK 1361974 · View history	$185.23M 2,631,474 shares	1.12%	-112.83K(-4.10%)Reduced	SEC filing ↗ Nov 14, 2025	▾
19	Impax Asset Management Group plc CIK 1749768 · View history	$174.78M 2,482,960 shares	1.02%	-152.18K(-5.80%)Reduced	SEC filing ↗ Nov 6, 2025	▾
20	DEUTSCHE BANK AG\ CIK 948046 · View history	$168.40M 2,392,408 shares	0.06%	+350.43K(+17.20%)Added	SEC filing ↗ Nov 13, 2025	▾

Showing 20 / 877 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

877

Cancelled or null records excluded

Disclosed shares

199,673,928

Not deduplicated across managers

Disclosed value

$14.05B

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

MASCO CORP /DE/ · Q3 2025

Explore all 877 reporting institutions.

This page includes 20 of 877 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

Download CSV
Earlier quarters
Advanced screening & filtering
API & AI access

Already have an account?

＋ New accounts get free API credits to explore data beyond ownership filings.

For AI agents & developers

The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 877 reporting institutions; totals use the complete disclosed data.

Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.

MCP  https://api.akkrudata.ai/mcp

akkru_institutional_holdings
{"action":"holders","cusip":"574599106","quarter":"2025Q3","type":"positions","page_size":100}

Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.

MCP endpoint: https://api.akkrudata.ai/mcp
API / MCP / CLI documentation: /documents
llms.txt: /llms.txt

Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.