# Martin Marietta Materials Inc MARTIN MAR MTLS

Martin Marietta Materials Inc MARTIN MAR MTLS is a security (CUSIP 573284AX4) tracked across SEC portfolio filings. 3 registered fund positions totaling $509K via N-PORT as of 2026-05-31.

## Summary

- Issuer: Martin Marietta Materials Inc
- Class: MARTIN MAR MTLS
- CUSIP: 573284AX4
- Asset category: DBT
- 13F holders: 0
- N-PORT fund positions: 3
- N-PORT value: $509K
- N-PORT report: 2026-05-31

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $482K | 0.08% |
| [Core Fixed Income Fund](https://search.stillhousedata.com/fund/S000008437) | MORGAN STANLEY PATHWAY FUNDS | $17K | 0.09% |
| [Six Circles Global Bond Fund](https://search.stillhousedata.com/fund/S000068181) | SIX CIRCLES TRUST | $10K | 0.01% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/573284AX4.md)
- [Search all SEC filings, advisers and people on Adviser Search](https://search.stillhousedata.com/)

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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.