# MIDAMERICAN ENERGY CO MidAmerican Energy Co

MIDAMERICAN ENERGY CO MidAmerican Energy Co is a security (CUSIP 595620AS4) tracked across SEC portfolio filings. 4 registered fund positions totaling $6.5M via N-PORT as of 2026-03-31.

## Summary

- Issuer: MIDAMERICAN ENERGY CO
- Class: MidAmerican Energy Co
- CUSIP: 595620AS4
- Asset category: DBT
- 13F holders: 0
- N-PORT fund positions: 4
- N-PORT value: $6.5M
- N-PORT report: 2026-03-31

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [Calvert Green Bond Fund](https://search.stillhousedata.com/fund/S000042600) | Calvert Impact Fund, Inc. | $3.5M | 42.29% |
| [Master Total Return Portfolio](https://search.stillhousedata.com/fund/S000004067) | Master Bond LLC | $2.5M | 1.33% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $421K | 0.07% |
| [BlackRock Total Return Fund](https://search.stillhousedata.com/fund/S000004071) | BlackRock Bond Fund, Inc. | $138K | 0.08% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/595620AS4.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.