# Martin Marietta Materials Inc MARTIN MAR MTLS

Martin Marietta Materials Inc MARTIN MAR MTLS is a security (CUSIP 573284AW6) tracked across SEC portfolio filings. 4 registered fund positions totaling $8.9M via N-PORT as of 2026-04-30.

## Summary

- Issuer: Martin Marietta Materials Inc
- Class: MARTIN MAR MTLS
- CUSIP: 573284AW6
- Asset category: DBT
- 13F holders: 0
- N-PORT fund positions: 4
- N-PORT value: $8.9M
- N-PORT report: 2026-04-30

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD INTERMEDIATE-TERM BOND INDEX FUND](https://search.stillhousedata.com/fund/S000002561) | VANGUARD BOND INDEX FUNDS | $6.8M | 1.31% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $762K | 0.13% |
| [BlackRock Total Return Fund](https://search.stillhousedata.com/fund/S000004071) | BlackRock Bond Fund, Inc. | $672K | 0.38% |
| [PGIM Core Bond Fund](https://search.stillhousedata.com/fund/S000004691) | Target Portfolio Trust | $638K | 2.64% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/573284AW6.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.