# Martin Marietta Materials Inc MARTIN MAR MTLS

Martin Marietta Materials Inc MARTIN MAR MTLS is a security (CUSIP 573284AV8) tracked across SEC portfolio filings. 1 registered fund positions totaling $347K via N-PORT as of 2026-03-31.

## Summary

- Issuer: Martin Marietta Materials Inc
- Class: MARTIN MAR MTLS
- CUSIP: 573284AV8
- Asset category: DBT
- 13F holders: 0
- N-PORT fund positions: 1
- N-PORT value: $347K
- N-PORT report: 2026-03-31

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $347K | 0.06% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/573284AV8.md)
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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.