Martin Marietta Materials
MLM
479.01
-10.00
-2.04%
Martin Marietta Materials
US · MLM
#614 by market cap
Listed 1970
479.01
-10.00
-2.04%
Live - 5344 symbols - heartbeat 86s ago
· 2026-10-08 07:00
Pre-market
477.57
-0.30%
After-hours
479.01
0.00%
- Market cap
- 34.02B
- P/E (TTM)i
- 11.76
- P/Bi
- 2.95
- EPSi
- 18.77
- Div yieldi
- 0.69%
- 52W posi
- 4%
Reader sentiment
Are you bullish or bearish on MLM?
Anonymous reader poll. Unscientific, not investment advice.
✦ Quant Ownership Signal how this is computed
Distributing
- The number of reporting institutions decreased by 2 in the most recent period (2026/Q3).
- Total institutional ownership fell 0.6 percentage points.
Institutional ownership
- Held by institutions
- 101.43% -0.62pp
- Institutions
- 1,261 -2
- As of
- 2026/Q3 vs. prior period
Ownership vs. money flow
DivergingInstitutions trimmed shares last reporting period, and the stock has seen net inflows in main-fund flow over the last 20 trading sessions - the two are pointing in different directions.
Institutional ownership changes are reported quarterly with a lag; fund-flow data is daily. Treat this as a directional cross-check, not a precise timing signal.
Holder types
Mutual Fund70.46%
Private Company17.06%
Hedge Fund7.51%
Public Company3.56%
Government Pension Fund1.28%
Sovereign Wealth Fund0.83%
Individual/Insider0.52%
Family Office/Trust0.24%
Insurance Company0.19%
Top holders as of 2026-08-21
Financière De Gestions Internationales
15.42% · 10.95M sh
BlackRock
6.61% · 4.69M sh
Vanguard Capital Management, LLC
6.01% · 4.27M sh
Vanguard Portfolio Management, LLC
4.50% · 3.20M sh
State Street Global Advisors
4.45% · 3.16M sh
T. Rowe Price Group, Inc.
3.15% · 2.24M sh
Principal Global Investors, LLC
2.98% · 2.12M sh
Managed Account Advisors LLC
2.78% · 1.97M sh
Aristotle Capital Management, LLC
2.58% · 1.83M sh
Victory Capital Management Inc.
2.51% · 1.78M sh
Bar length is relative to the largest holder shown here, not to 100% of the company.
Insiders
50 filings tracked · 35 buys · 10 sells
| Name | Role | Stake |
|---|---|---|
| Financière De Gestions Internationales | -- | 15.42% |
| C. Nye | Chairperson & CEO | 0.31% |
| Michael Petro | Senior Vice President of Strategy & Development | 0.03% |
| James A. Nickolas | Chief Financial Officer | 0.03% |
| Sue Cole | Independent Director | 0.02% |
| Laree Perez | Independent Director | 0.02% |
| Christopher Samborski | Chief Operating Officer | 0.02% |
| John Koraleski | Lead Independent Director | 0.02% |
| Robert Cardin | Chief Accounting Officer | 0.01% |
| Donald Slager | Independent Director | 0.01% |
Insider transactions most recent Form 4 filings
| Date | Name | Role | Type | Shares | Price |
|---|---|---|---|---|---|
| 2026-08-31 | Michael Petro | Senior Vice President of Strategy & Development | Other Acquisition | +9,331 | -- |
| 2026-08-30 | David Wajsgras | Independent Director | Other Acquisition | +78 | $518.70 |
| 2026-08-30 | Martin Lyons | Independent Director | Other Acquisition | +68 | $518.70 |
| 2026-08-30 | Thomas Pike | Independent Director | Other Acquisition | +66 | $518.70 |
| 2026-08-20 | Financière De Gestions Internationales | -- | Initial Statement of Beneficial | 0 | -- |
| 2026-08-20 | Philipp Niemann | Director | Other Acquisition | +337 | -- |
| 2026-08-02 | Michael Petro | Senior Vice President of Strategy & Development | Sale to Issuer | -368 | $542.27 |
| 2026-05-28 | David Wajsgras | Independent Director | Other Acquisition | +69 | $581.64 |
| 2026-05-28 | Martin Lyons | Independent Director | Other Acquisition | +61 | $581.64 |
| 2026-05-28 | Thomas Pike | Independent Director | Other Acquisition | +59 | $581.64 |
| 2026-05-13 | Donald Slager | Independent Director | Other Acquisition | +313 | -- |
| 2026-05-13 | Gayla Delly | Independent Director | Other Acquisition | +313 | -- |
| 2026-05-13 | Gayla Delly | Independent Director | Initial Statement of Beneficial | 0 | -- |
| 2026-05-13 | Laree Perez | Independent Director | Other Acquisition | +313 | -- |
| 2026-05-13 | David Wajsgras | Independent Director | Other Acquisition | +313 | -- |
| 2026-05-13 | Martin Lyons | Independent Director | Other Acquisition | +313 | -- |
| 2026-05-13 | Martin Lyons | Independent Director | Initial Statement of Beneficial | 0 | -- |
| 2026-05-13 | Dorothy Ables | Independent Director | Other Acquisition | +313 | -- |
| 2026-05-13 | Mary Mack | Director | Other Acquisition | +313 | -- |
| 2026-05-13 | Thomas Pike | Independent Director | Other Acquisition | +313 | -- |
Form 4 filings, most recent per company. "Other Derivative Acquisition" rows are mostly RSU/option vesting, not open-market buying - the Type column says which.
Quote time 2026-10-08 07:00:14 · For reference only, not investment advice and not tailored to your situation.