Question 1

How many shares of MLM does GARDNER RUSSO & QUINN LLC own?

Accepted Answer

As of 2026-Q2, GARDNER RUSSO & QUINN LLC holds 705,367 shares of MLM (MARTIN MARIETTA MATERIALS).

Question 2

What is GARDNER RUSSO & QUINN LLC's MLM position worth?

Accepted Answer

As of 2026-Q2, GARDNER RUSSO & QUINN LLC's MLM position is worth $406.8M.

Question 3

Is GARDNER RUSSO & QUINN LLC buying or selling MLM?

Accepted Answer

In 2026-Q2, GARDNER RUSSO & QUINN LLC decreased their MLM position (-1.4% change in shares).

Question 4

When did GARDNER RUSSO & QUINN LLC first buy MLM?

Accepted Answer

Based on available 13F filings, GARDNER RUSSO & QUINN LLC first reported a position in MLM in 2024-Q3. They have held the position across 30 quarters.

Quarter	Action	Shares	Change	Value	Weight	Price	Conviction
2026-Q2 Latest	Decreased	705,367	-1.4%	$406.8M	4.6%	$576.70	0
2026-Q1	Decreased	715,411	-1.5%	$421.1M	5.0%	$656.78	0
2025-Q4	Increased	726,612	+5.7%	$452.4M	4.9%	$631.42	61
2025-Q3	Decreased	687,537	-3.5%	$433.3M	4.6%	$620.42	0
2025-Q2	Decreased	712,779	-0.2%	$391.3M	4.2%	$548.58	0
2025-Q1	Increased	714,252	+1.0%	$341.5M	3.8%	$476.03	57
2024-Q4	Decreased	707,010	-5.7%	$365.2M	4.1%	$517.26	0
2024-Q3	Decreased	750,072	-1.8%	$403.7M	4.1%	$535.31	0