Ticker · CUSIP 573284106

MLM

MARTIN MARIETTA MATLS INC
Basic Materials·Building Materials
···Share
Holders (tracked)
15
Combined shares
2,721,661
Combined value
$1.51B
Last close
$607.98
Quarter
2025Q4
Tracked holders · last 8 quarters
+1 vs previous quarter over the last 8.
15152024Q12025Q4
Price is +9.9% vs the avg quarter-end implied price across tracked holders.

SEC event timeline

25 events
  1. Jeremy Grantham (GMO) opened position2026-02-17
    +9,624 shares · 2025Q4
    13F
  2. D.E. Shaw & Co. exited2026-02-17
    −1,200 shares · 2025Q4
    13F
  3. AQR Capital Management added2026-02-17
    +9,531 shares · 2025Q4
    13F
  4. Boykin Curry (Eagle Capital) trimmed2026-02-17
    −7,893 shares · 2025Q4
    13F
  5. Ken Griffin (Citadel Advisors) added2026-02-17
    +76,206 shares · 2025Q4
    13F
  6. Two Sigma Investments trimmed2026-02-17
    −84,193 shares · 2025Q4
    13F
  7. T. Rowe Price added2026-02-17
    +214,270 shares · 2025Q4
    13F
  8. Wellington Management trimmed2026-02-17
    −579 shares · 2025Q4
    13F
  9. Paul Tudor Jones (Tudor Investment) opened position2026-02-17
    +600 shares · 2025Q4
    13F
  10. Izzy Englander (Millennium Mgmt) trimmed2026-02-17
    −18,474 shares · 2025Q4
    13F
  11. Ray Dalio (Bridgewater Associates) exited2026-02-13
    −1,855 shares · 2025Q4
    13F
  12. Norges Bank (Norway SWF) opened position2026-02-10
    +569,623 shares · 2025Q4
    13F
  13. Ken Fisher (Fisher Asset Mgmt) trimmed2026-02-09
    −55 shares · 2025Q4
    13F
  14. Baillie Gifford & Co trimmed2026-01-23
    −36,419 shares · 2025Q4
    13F
  15. Izzy Englander (Millennium Mgmt) added2025-11-14
    +98,024 shares · 2025Q3
    13F
  16. Two Sigma Investments trimmed2025-11-14
    −119,186 shares · 2025Q3
    13F
  17. AQR Capital Management added2025-11-14
    +23,646 shares · 2025Q3
    13F
  18. T. Rowe Price trimmed2025-11-14
    −25,766 shares · 2025Q3
    13F
  19. Wellington Management added2025-11-14
    +500 shares · 2025Q3
    13F
  20. Boykin Curry (Eagle Capital) trimmed2025-11-14
    −4,549 shares · 2025Q3
    13F
  21. Ray Dalio (Bridgewater Associates) opened position2025-11-13
    +1,855 shares · 2025Q3
    13F
  22. Norges Bank (Norway SWF) exited2025-11-13
    −425,917 shares · 2025Q3
    13F
  23. Ken Fisher (Fisher Asset Mgmt) opened position2025-11-12
    +383 shares · 2025Q3
    13F
  24. Norges Bank (Norway SWF) trimmed2025-11-12
    −14,207 shares · 2024Q3
    13F
  25. Baillie Gifford & Co trimmed2025-10-31
    −35,149 shares · 2025Q3
    13F

Insider activity

No insider transactions in the last 30 days.
View full insider history for MLM →
Follow-the-investor returns
If you'd copied each holder of MLM…
Cost basis inferred from 13F share-delta history. Sorted by % return on the position they're still holding.
InvestorFirst inCost basisReturnPosition value today
T. Rowe Price2016Q1$10.10+5922.2%$184.2M
Wally Weitz (Weitz Investment)2017Q3$194.06+213.3%$25.1M
Ken Fisher (Fisher Asset Mgmt)2017Q4$220.86+175.3%$199K
Baillie Gifford & Co2016Q1$247.41+145.7%$704.9M
Paul Tudor Jones (Tudor Investment)2016Q2$447.56+35.8%$365K
Boykin Curry (Eagle Capital)2025Q1$478.13+27.2%$195.0M
Wellington Management2016Q1$503.06+20.9%$415K
Two Sigma Investments2016Q1$517.88+17.4%$8.5M
AQR Capital Management2016Q1$559.22+8.7%$60.7M
Jeremy Grantham (GMO)2024Q4$567.35+7.2%$5.9M
Ken Griffin (Citadel Advisors)2016Q1$621.29-2.1%$54.1M
Ken Griffin (Citadel Advisors)2016Q1$621.29-2.1%$54.1M
Ken Griffin (Citadel Advisors)2016Q1$621.29-2.1%$54.1M
Izzy Englander (Millennium Mgmt)2016Q1$622.35-2.3%$54.5M
Norges Bank (Norway SWF)2016Q1$3639.01-83.3%$346.3M

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.
New positions3
Added to3
Trimmed6
Exited2

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
17
$219.57B
2022Q2
16
$133.54B
2022Q3
19
$170.6M
2022Q4
16
$2.87B
2023Q1
19
$2.83B
2023Q2
17
$3.73B
2023Q3
20
$3.39B
2023Q4
14
$3.85B
2024Q1
15
$4.54B
2024Q2
18
$4.00B
2024Q3
19
$1.73B
2024Q4
14
$1.56B
2025Q1
16
$1.01B
2025Q2
15
$1.32B
2025Q3
14
$1.21B
2025Q4
15
$1.51B
Congress members trading this stock
DateMemberTypeAmount rangeFiling
2026-03-09April McClain DelaneyBuy$1K – $15KPDF ↗
2025-12-02April McClain DelaneyBuy$1K – $15KPDF ↗
2025-09-23Valerie HoyleSell$1K – $15KPDF ↗
2025-08-01April McClain DelaneySell (P)$1K – $15KPDF ↗
2025-06-10Lisa McClainSell$1K – $15KPDF ↗
2024-12-11Lisa McClainBuy$1K – $15KPDF ↗
2024-10-29Valerie HoyleBuy$1K – $15KPDF ↗

Who owns MLM

15 super-investors · 2025Q4
Tracked stake
2.72M
shares
Combined value
$1.51B
% of shares outstanding
—
shares-out unknown
Quarter action mix
New3Added5Trim6Held1
#ManagerSharesValue
1Baillie Gifford & Co1.16M$722M
2Norges Bank
Norway SWF
569.6K$355M
3Boykin Curry
Eagle Capital
320.8K$200M
4AQR Capital Management99.8K$62M
5Izzy Englander
Millennium Mgmt
89.7K$56M
6Ken Griffin
Citadel Advisors
88.9K$55M
7Wally Weitz
Weitz Investment
41.3K$26M
8Ken Griffin
Citadel Advisors
18.6K$12M
9Two Sigma Investments14.0K$9M
10Jeremy Grantham
GMO
9.6K$6M
11Ken Griffin
Citadel Advisors
5.4K$3M
12Wellington Management682$425K
13Paul Tudor Jones
Tudor Investment
600$374K
14Ken Fisher
Fisher Asset Mgmt
328$205K
15T. Rowe Price303.0K$189K

Recent moves

20 transactions
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