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MLM
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Position history for WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's holdings in MARTIN MARIETTA MATLS INC

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds 272,392 shares of MLM (MARTIN MARIETTA MATLS INC), worth $160.4M as of 2026-Q1. The position was increased (+0.8% shares). MLM represents 0.5% of WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's portfolio.

Current Value

$160.4M

Current Shares

272,392

Total Value Change

-$42.7M

Total Shares Change

-102,419

Quarter-by-Quarter History
QuarterActionSharesChangeValueWeightPriceConviction
2026-Q1
Latest
Increased
272,392
+0.8%
$160.4M0.5%$656.78
43
2025-Q4
Decreased
270,203
-2.6%
$168.2M0.5%$631.42
0
2025-Q3
Decreased
277,356
-3.3%
$174.8M0.5%$620.42
0
2025-Q2
Decreased
286,715
-2.1%
$157.4M0.4%$548.58
0
2025-Q1
Decreased
292,752
-33.2%
$140M0.4%$476.03
0
2024-Q4
Increased
438,202
+5.5%
$226.3M0.6%$517.26
46
2024-Q3
Increased
415,475
+10.8%
$223.6M0.6%$535.31
48
2024-Q2
Increased
374,811
+1.0%
$203.1M0.5%$537.18
43

Other major holders of MLM: VANGUARD GROUP INC

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