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Ken Griffin's Martin Marietta Materials, Inc. (MLM) position

Yes: as of Q1 2026, Ken Griffin holds 17K shares of MLM worth $9.8M (0.0% of the disclosed portfolio). Held since at least Q1 2021; that opening coverage snapshot is not counted as a purchase.
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Current value
$9.8M
Shares held
17K
% of portfolio
0.0%
Est. average buy price (i)
$617.35
est. since Q1 2021
Quarter-end price
$588.68

Estimated trade prices

Average price in quarters with purchases
$417.79
Average prices in quarters with sales
  • Q1 2026: $637.65 (72K shares sold)
  • Q2 2025: $528.53 (8K shares sold)
  • Q1 2025: $507.84 (83K shares sold)
  • Q2 2024: $581.17 (4K shares sold)
  • Q4 2023: $450.76 (9K shares sold)
  • Q3 2023: $442.17 (167K shares sold)
  • Q1 2023: $350.81 (216K shares sold)
  • Q3 2022: $338.55 (134K shares sold)
  • Q4 2021: $405.36 (12K shares sold)
  • Q3 2021: $363.74 (4K shares sold)

MLM price vs Griffin's position

1Y 3Y 5Y MAX
Dates
$200$400$600$80020222023202420252026Sold 4K shares (13.3%) · Q3 2021. Average closing price $363.74 · Price range $339.74–$390.424KsharessoldSold 12K shares (47.9%) · Q4 2021. Average closing price $405.36 · Price range $348.11–$441.7212KsharessoldAdded 10K shares (71.1%) · Q1 2022. Average closing price $387.54 · Price range $359.99–$441.5110KsharespurchasedAdded 207K shares (905.6%) · Q2 2022. Average closing price $341.09 · Price range $297.30–$385.06207KsharespurchasedSold 134K shares (58.3%) · Q3 2022. Average closing price $338.55 · Price range $296.05–$371.57134KsharessoldAdded 127K shares (132.6%) · Q4 2022. Average closing price $341.15 · Price range $298.83–$368.73127KsharespurchasedSold 216K shares (96.9%) · Q1 2023. Average closing price $350.81 · Price range $320.60–$382.80216KsharessoldAdded 169K shares (over 1,000%) · Q2 2023. Average closing price $394.38 · Price range $337.06–$461.69169KsharespurchasedSold 167K shares (95.0%) · Q3 2023. Average closing price $442.17 · Price range $406.38–$462.24167KsharessoldSold 9K shares (98.6%) · Q4 2023. Average closing price $450.76 · Price range $397.86–$499.629KsharessoldAdded 6K shares (over 1,000%) · Q1 2024. Average closing price $545.78 · Price range $482.00–$613.946KsharespurchasedSold 4K shares (71.9%) · Q2 2024. Average closing price $581.17 · Price range $534.99–$621.534KsharessoldAdded 34K shares (over 1,000%) · Q3 2024. Average closing price $540.54 · Price range $502.48–$593.3534KsharespurchasedAdded 58K shares (162.2%) · Q4 2024. Average closing price $567.37 · Price range $516.50–$619.5858KsharespurchasedSold 83K shares (88.7%) · Q1 2025. Average closing price $507.84 · Price range $460.39–$552.6483KsharessoldSold 8K shares (79.4%) · Q2 2025. Average closing price $528.53 · Price range $452.51–$568.198KsharessoldAdded 11K shares (485.2%) · Q3 2025. Average closing price $595.97 · Price range $546.36–$631.1211KsharespurchasedAdded 76K shares (598.7%) · Q4 2025. Average closing price $622.03 · Price range $589.97–$656.8576KsharespurchasedSold 72K shares (81.2%) · Q1 2026. Average closing price $637.65 · Price range $560.69–$700.7072Ksharessold← Earlier —1 purchase
Average closing price · filing quarter
$637.65
Price range · filing quarter
$560.69 – $700.70
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Every quarterly change

Quarter Action Shares change Est. value change Δ Own Shares held Filing date
Q1 2026 Reduced −72K −$46M −81.2% 17K May 15, 2026
Q4 2025 Added +76K +$47M +598.7% 89K Feb 17, 2026
Q3 2025 Added +11K +$6.3M +485.2% 13K Nov 14, 2025
Q2 2025 Reduced −8K −$4.4M −79.4% 2K Aug 14, 2025
Q1 2025 Reduced −83K −$42M −88.7% 11K May 15, 2025
Q4 2024 Added +58K +$33M +162.2% 93K Feb 14, 2025
Q3 2024 Added +34K +$18M +2,133.6% 36K Nov 14, 2024
Q2 2024 Reduced −4K −$2.4M −71.9% 2K Aug 14, 2024
Q1 2024 Added +6K +$3.0M +4,622.5% 6K May 15, 2024
Q4 2023 Reduced −9K −$3.9M −98.6% 120 Feb 14, 2024
Q3 2023 Reduced −167K −$74M −95.0% 9K Nov 14, 2023
Q2 2023 Added +169K +$67M +2,437.0% 176K Aug 14, 2023
Q1 2023 Reduced −216K −$76M −96.9% 7K May 15, 2023
Q4 2022 Added +127K +$43M +132.6% 223K Feb 14, 2023
Q3 2022 Reduced −134K −$45M −58.3% 96K Nov 14, 2022
Q2 2022 Added +207K +$71M +905.6% 230K Aug 15, 2022
Q1 2022 Added +10K +$3.7M +71.1% 23K May 16, 2022
Q4 2021 Reduced −12K −$5.0M −47.9% 13K Feb 14, 2022
Q3 2021 Reduced −4K −$1.4M −13.3% 26K Nov 15, 2021
Q2 2021 Added +18K +$6.3M +146.9% 30K Aug 16, 2021
Q1 2021 First covered – – – 12K May 21, 2021
Data through Q1 2026 · filed May 15, 2026
21 grouped rows from 21 quarters

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Common questions

Does Ken Griffin own MLM?

Yes. As of Q1 2026, Ken Griffin disclosed 17K shares of MLM, worth $9.8M. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

When did Ken Griffin buy MLM?

Ken Griffin held MLM since at least Q1 2021, when this filing coverage begins; the opening snapshot is not a disclosed purchase. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

Did Ken Griffin sell MLM?

The quarter-by-quarter table above shows each sale and reduction Ken Griffin disclosed in MLM. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How many shares of MLM does Ken Griffin own?

Ken Griffin disclosed 17K shares of MLM as of Q1 2026. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

What price did Ken Griffin pay for MLM?

Ken Griffin began building the MLM position before our 13F history starts, so an exact average buy price cannot be estimated without understating it. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.

How are the estimated trade prices calculated?

13F filings disclose quarter-end holdings, not trade dates or execution prices. These estimates use each covered quarter's average market price; the add average excludes the opening position and quarters without price data. All figures come from SEC 13F filings for Q1 2026, the latest disclosed quarter.