William Blair Investment Management
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William Blair Investment Management’s Martin Marietta Materials MLM Stock Holding History

Quarter Market Value Status Shares Shares
Change %
Trade Value Portfolio Weight Portfolio Position
2025
Q2
$157M Sell
286,715
-6,037
-2% -$3.31M 0.42% 71
2025
Q1
$140M Sell
292,752
-145,450
-33% -$69.5M 0.39% 72
2024
Q4
$226M Buy
438,202
+22,727
+5% +$11.7M 0.55% 47
2024
Q3
$224M Buy
415,475
+40,664
+11% +$21.9M 0.55% 50
2024
Q2
$203M Buy
374,811
+3,598
+1% +$1.95M 0.53% 51
2024
Q1
$228M Buy
371,213
+38,824
+12% +$23.8M 0.59% 46
2023
Q4
$166M Buy
332,389
+130,557
+65% +$65.1M 0.48% 67
2023
Q3
$82.8M Sell
201,832
-318,234
-61% -$131M 0.28% 107
2023
Q2
$240M Buy
520,066
+99,248
+24% +$45.8M 0.77% 26
2023
Q1
$149M Sell
420,818
-81,631
-16% -$29M 0.52% 61
2022
Q4
$170M Sell
502,449
-30,041
-6% -$10.2M 0.65% 49
2022
Q3
$172M Buy
532,490
+224,089
+73% +$72.2M 0.68% 47
2022
Q2
$92.3M Sell
308,401
-6,978
-2% -$2.09M 0.34% 99
2022
Q1
$121M Sell
315,379
-360,234
-53% -$139M 0.36% 94
2021
Q4
$298M Sell
675,613
-173,199
-20% -$76.3M 0.8% 28
2021
Q3
$290M Sell
848,812
-119,200
-12% -$40.7M 0.82% 29
2021
Q2
$341M Sell
968,012
-14,320
-1% -$5.04M 1.07% 18
2021
Q1
$330M Sell
982,332
-178,828
-15% -$60.1M 1.07% 15
2020
Q4
$330M Sell
1,161,160
-15,255
-1% -$4.33M 1.1% 16
2020
Q3
$277M Sell
1,176,415
-17,394
-1% -$4.09M 1.08% 16
2020
Q2
$247M Buy
1,193,809
+54,050
+5% +$11.2M 1% 19
2020
Q1
$216M Buy
1,139,759
+101,312
+10% +$19.2M 1.05% 18
2019
Q4
$290M Buy
1,038,447
+22,837
+2% +$6.39M 1.16% 15
2019
Q3
$278M Buy
1,015,610
+20,555
+2% +$5.63M 1.19% 12
2019
Q2
$229M Sell
995,055
-10,003
-1% -$2.3M 0.96% 20
2019
Q1
$202M Sell
1,005,058
-5,987
-0.6% -$1.2M 0.85% 32
2018
Q4
$174M Sell
1,011,045
-10,684
-1% -$1.84M 0.86% 27
2018
Q3
$186M Buy
1,021,729
+56,601
+6% +$10.3M 0.64% 48
2018
Q2
$216M Buy
965,128
+166,999
+21% +$37.3M 0.8% 23
2018
Q1
$165M Buy
798,129
+44,985
+6% +$9.33M 0.63% 45
2017
Q4
$166M Buy
753,144
+157,388
+26% +$34.8M 0.65% 39
2017
Q3
$123M Buy
595,756
+130,473
+28% +$26.9M 0.44% 73
2017
Q2
$104M Buy
465,283
+85,835
+23% +$19.1M 0.38% 87
2017
Q1
$82.8M Buy
379,448
+33,768
+10% +$7.37M 0.31% 103
2016
Q4
$76.6M Buy
345,680
+68,273
+25% +$15.1M 0.31% 114
2016
Q3
$49.7M Buy
277,407
+2,315
+0.8% +$415K 0.19% 146
2016
Q2
$52.8M Buy
275,092
+131,283
+91% +$25.2M 0.21% 134
2016
Q1
$22.9M Buy
+143,809
New +$22.9M 0.09% 189