# MIDAMERICAN ENERGY CO MidAmerican Energy Co

MIDAMERICAN ENERGY CO MidAmerican Energy Co is a security (CUSIP 595620AY1) tracked across SEC portfolio filings. 10 registered fund positions totaling $16.8M via N-PORT as of 2026-05-31.

## Summary

- Issuer: MIDAMERICAN ENERGY CO
- Class: MidAmerican Energy Co
- CUSIP: 595620AY1
- Asset category: DBT
- 13F holders: 0
- N-PORT fund positions: 10
- N-PORT value: $16.8M
- N-PORT report: 2026-05-31

## Top fund holders (N-PORT)

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [Master Total Return Portfolio](https://search.stillhousedata.com/fund/S000004067) | Master Bond LLC | $12.6M | 6.68% |
| [College Retirement Equities Fund - Responsible Balanced Account](https://search.stillhousedata.com/fund/S000005086) | College Retirement Equities Fund | $1.9M | 0.94% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $817K | 0.14% |
| [JPMorgan Core Bond Trust](https://search.stillhousedata.com/fund/S000007337) | JPMorgan Institutional Trust | $629K | 1.35% |
| [MFS Corporate Bond Portfolio](https://search.stillhousedata.com/fund/S000002634) | MFS VARIABLE INSURANCE TRUST II | $370K | 29.52% |
| [Core Fixed Income Fund](https://search.stillhousedata.com/fund/S000008437) | MORGAN STANLEY PATHWAY FUNDS | $143K | 0.78% |
| [MFS Global Alternative Strategy Fund](https://search.stillhousedata.com/fund/S000019515) | MFS Series Trust XV | $131K | 6.04% |
| [BlackRock Balanced Fund, Inc.](https://search.stillhousedata.com/fund/S000002175) | BlackRock Balanced Fund, Inc. | $127K | 0.70% |
| [BlackRock Balanced Portfolio](https://search.stillhousedata.com/fund/S000003863) | BlackRock Series Fund, Inc. | $30K | 0.65% |
| Invesco Bond Fund | Invesco Bond Fund | $22K | 1.20% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/595620AY1.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.