Douglass Winthrop Advisors, LLC

CIK

1308527

City

NEW YORK

State / Country

Stock

MLM — Martin Marietta Materials Inc

Top Portfolio Positions

184 positions · $2,910,607,824 total · as of Mar 31, 2026

Ticker	Company	Shares	Value (USD)	% of Portfolio
MSFT	Microsoft Corp Technology	715,013	$264,676,362	9.09%
AMZN	Amazon Com Inc Consumer Cyclical	1,235,231	$257,261,560	8.84%
AAPL	Apple Inc. Technology	722,635	$183,397,536	6.30%
DE	Deere & Co Industrials	321,034	$180,838,452	6.21%
MKL	Markel Group Inc. Financial Services	80,498	$154,078,798	5.29%
FAST	Fastenal Co Industrials	3,116,146	$144,589,174	4.97%
MLM	Martin Marietta Materials Inc Basic Materials	219,073	$128,963,893	4.43%
GOOGL	Alphabet Inc. Communication Services	419,011	$120,490,803	4.14%
TDG	TransDigm Group INC Industrials	102,803	$119,144,564	4.09%
SHW	Sherwin Williams Co Basic Materials	370,122	$118,642,607	4.08%

25 quarters · across all stocks

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25 of 25 shown

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$128,963,893	219,073	-2.0%	Shares	Sole	2026-05-14
2025-12-31	$139,246,701	223,632	-3.7%	Shares	Sole	2026-02-12
2025-09-30	$146,372,445	232,234	+0.8%	Shares	Sole	2025-11-13
2025-06-30	$126,422,743	230,295	+3.5%	Shares	Sole	2025-08-14
2025-03-31	$106,357,627	222,445	+12.5%	Shares	Sole	2025-05-14
2024-12-31	$102,144,073	197,762	+2.2%	Shares	Sole	2025-02-11
2024-09-30	$104,198,741	193,588	+2.2%	Shares	Sole	2024-11-12
2024-06-30	$102,675,434	189,508	+0.9%	Shares	Sole	2024-08-07
2024-03-31	$115,347,661	187,881	+0.3%	Shares	Sole	2024-05-13
2023-12-31	$93,459,313	187,327	-0.1%	Shares	Sole	2024-02-12
2023-09-30	$76,965,410	187,501	+0.8%	Shares	Sole	2023-11-13
2023-06-30	$85,890,499	186,035	+1.3%	Shares	Sole	2023-08-14
2023-03-31	$65,223,456	183,697	+21.5%	Shares	Sole	2023-05-15
2022-12-31	$51,105,457	151,213	+1359.3%	Shares	Sole	2023-02-13
2022-09-30	$3,337,496	10,362	-0.6%	Shares	Sole	2022-11-15
2022-06-30	$3,120,474	10,428	-2.4%	Shares	Sole	2022-08-11
2022-03-31	$4,113,704	10,688	-15.4%	Shares	Sole	2022-05-16
2021-12-31	$5,566,410	12,636	-5.7%	Shares	Sole	2022-02-14
2021-09-30	$4,576,803	13,395	-14.0%	Shares	Sole	2021-11-10
2021-06-30	$5,481,551	15,581	-30.6%	Shares	Sole	2021-08-02
2021-03-31	$7,536,136	22,441	-93.2%	Shares	Sole	2021-05-13
2020-12-31	$93,470,429	329,156	+0.2%	Shares	Sole	2021-01-27
2020-09-30	$77,317,642	328,508	+1.6%	Shares	Sole	2020-11-12
2020-06-30	$66,785,113	323,305	+7.2%	Shares	Sole	2020-07-17
2020-03-31	$57,077,823	301,632	—	Shares	Sole	2020-04-23
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