# Martin Marietta Materials Inc MARTIN MAR MTLS

Martin Marietta Materials Inc MARTIN MAR MTLS is a security (CUSIP 573284BB1) tracked across SEC portfolio filings. 4 registered fund positions totaling $967K via N-PORT as of 2026-03-31.

## Summary

- Issuer: Martin Marietta Materials Inc
- Class: MARTIN MAR MTLS
- CUSIP: 573284BB1
- Asset category: DBT
- 13F holders: 0
- N-PORT fund positions: 4
- N-PORT value: $967K
- 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 | $707K | 0.12% |
| [Pioneer Balanced ESG Fund](https://search.stillhousedata.com/fund/S000010109) | Pioneer Series Trust IV | $123K | 2.95% |
| [Pioneer Bond VCT Portfolio](https://search.stillhousedata.com/fund/S000010172) | PIONEER VARIABLE CONTRACTS TRUST /MA/ | $113K | 8.81% |
| [Six Circles Global Bond Fund](https://search.stillhousedata.com/fund/S000068181) | SIX CIRCLES TRUST | $24K | 0.01% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/573284BB1.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.