# NORTHERN NATURAL GAS CO Northern Natural Gas Co

NORTHERN NATURAL GAS CO Northern Natural Gas Co is a security (CUSIP 665501AN2) tracked across SEC portfolio filings. 4 registered fund positions totaling $2.4M via N-PORT as of 2026-05-31.

## Summary

- Issuer: NORTHERN NATURAL GAS CO
- Class: Northern Natural Gas Co
- CUSIP: 665501AN2
- Asset category: DBT
- 13F holders: 0
- N-PORT fund positions: 4
- N-PORT value: $2.4M
- N-PORT report: 2026-05-31

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [Harbor Core Bond Fund](https://search.stillhousedata.com/fund/S000061981) | HARBOR FUNDS | $1.7M | 10.19% |
| [Corporate Bond Portfolio](https://search.stillhousedata.com/fund/S000004118) | MORGAN STANLEY INSTITUTIONAL FUND TRUST | $406K | 26.24% |
| [JPMorgan Core Bond Trust](https://search.stillhousedata.com/fund/S000007337) | JPMorgan Institutional Trust | $229K | 0.49% |
| Invesco Bond Fund | Invesco Bond Fund | $17K | 0.93% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/665501AN2.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.