Martin Marietta Materials Inc. 13F holders
Of the 44 funds followed here, 10 reported a position in Martin Marietta Materials Inc. in a 13F for the quarter ended 30 June 2026. The largest: FMR LLC, 2.2 million shares worth $1.26 billion, 0.1% of its reported book. New this quarter: TCI Fund Management, Renaissance Technologies.
| Fund | Shares | Value | Of its book | Change on the quarter | Status | Quarter ended | Filing |
|---|---|---|---|---|---|---|---|
| FMR LLC | 2,192,603 | $1.26 billion | 0.1% | -415,376 | trimmed | 30 June 2026 | 13F |
| Geode Capital Management | 1,601,490 | $919.9 million | 0.0% | +12,556 | added | 30 June 2026 | 13F |
| TCI Fund Management | 1,315,109 | $758.4 million | 1.4% | +1,315,109 | new | 30 June 2026 | 13F |
| Baillie Gifford | 991,786 | $572.0 million | 0.5% | -95,594 | trimmed | 30 June 2026 | 13F |
| Norges Bank | 557,143 | $321.3 million | 0.0% | held | 30 June 2026 | 13F | |
| Citadel Advisors | 72,197 | $41.6 million | 0.0% | +19,367 | added | 30 June 2026 | 13F |
| Millennium Management | 56,531 | $32.6 million | 0.0% | +39,270 | added | 30 June 2026 | 13F |
| Two Sigma Investments | 51,433 | $29.7 million | 0.0% | -42,780 | trimmed | 30 June 2026 | 13F |
| Renaissance Technologies | 31,894 | $18.4 million | 0.0% | +31,894 | new | 30 June 2026 | 13F |
| Point72 Asset Management | 1,300 | $749,710 | 0.0% | +100 | added | 30 June 2026 | 13F |
Value is what the fund reported. Change is shares against the fund's previous 13F; a fund with one filing read shows no change. 13Fs cover long US positions of managers above $100 million and are filed up to 45 days after the quarter.
Schedule 13D and 13G filed on the name, last twelve months
| Filed | Schedule | Who | Holding | Of the class | Event date | Rule or purpose | Filing |
|---|---|---|---|---|---|---|---|
| 7 August 2026 | 13G | State Street Corporation and 1 other | 3.2 million | 5.2% | 30 June 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 30 April 2026 | 13G | Vanguard Capital Management and 1 other | 4.5 million | 7.5% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 29 April 2026 | 13G | Vanguard Portfolio Management and 1 other | 3.2 million | 5.2% | 31 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
| 27 March 2026 | 13G/A | The Vanguard Group and 1 other | 0 | 0.0% | 13 March 2026 | passive, institutional (13d-1(b)) | EDGAR |
A Schedule 13D is filed by anyone who crosses 5% of a class with intent to influence; a 13G by a passive holder. Amendments (/A) report a change, including an exit to zero. Holding and percentage are as the filer stated them on the cover page; the purpose is the filer's own words, cut short.
Fails to deliver
| Settlement date | Shares failed | Price | File |
|---|---|---|---|
| 27 August 2026 | 2,877 | $532.18 | SEC |
| 21 August 2026 | 31 | $525.27 | SEC |
| 20 August 2026 | 2,253 | $535.53 | SEC |
| 19 August 2026 | 310 | $522.81 | SEC |
| 5 August 2026 | 5,042 | $555.82 | SEC |
| 3 August 2026 | 877 | $525.14 | SEC |
| 23 July 2026 | 4,132 | $550.66 | SEC |
| 22 July 2026 | 166 | $547.33 | SEC |
| 21 July 2026 | 263 | $553.62 | SEC |
| 16 July 2026 | 1,604 | $569.32 | SEC |
Shares that failed to deliver at settlement, per day, from the SEC's half-month files, which arrive about two weeks after the period. Largest in the window: 5,042 on 5 August 2026. A fail is an operational fact about settlement, not a position.
Source
Each fund's 13F-HR on EDGAR, linked per row; positions matched to MLM by CUSIP from the SEC's own fails-to-deliver files; Schedule 13D and 13G from the company's own filing index, each read to confirm the company is the issuer named.
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