# Core Bond Portfolio

Core Bond Portfolio (CIK 1104129) is an SEC-registered fund company with 1 reporting fund series and $751.5M in net assets as of 2026-03-31.

## Registrant

- CIK: 1104129
- File number: 811-09833
- LEI: 3BIRQP3EJTB29FBSFZ15
- Address: One Post Office Square, BOSTON, US-MA, 02109
- Phone: 617-482-8260
- Net assets: $751.5M
- Total assets: $858.2M
- Fund series: 1
- Latest report: 2026-03-31

## Fund series (1)

| Series | Net assets |
| --- | --- |
| [Core Bond Portfolio](https://search.stillhousedata.com/fund/S000005237) | $751.5M |

## Largest reported holdings (across all series)

| Holding | Value |
| --- | --- |
| [Morgan Stanley & Co. LLC](https://search.stillhousedata.com/security/61747C707) | $82.1M |
| [UMBS, TBA](https://search.stillhousedata.com/security/01F050643) | $79.7M |
| [United States Treasury](https://search.stillhousedata.com/security/91282CMA6) | $19.9M |
| [United States Treasury](https://search.stillhousedata.com/security/91282CEC1) | $19.7M |
| [United States Treasury](https://search.stillhousedata.com/security/91282CEN7) | $17.8M |
| [United States Treasury](https://search.stillhousedata.com/security/912810TW8) | $16.9M |
| [Eaton Vance Short Duration Income ETF](https://search.stillhousedata.com/security/61774R825) | $14.5M |
| [Freddie Mac](https://search.stillhousedata.com/security/3132DWNJ8) | $11.8M |
| NYKREDIT REALKREDIT A/S | $11.0M |
| [Fannie Mae](https://search.stillhousedata.com/security/31418FED5) | $10.2M |
| [United States Treasury](https://search.stillhousedata.com/security/91282CBP5) | $7.3M |
| [United States Treasury](https://search.stillhousedata.com/security/91282CNC1) | $7.2M |
| [UMBS, TBA](https://search.stillhousedata.com/security/01F042640) | $7.2M |
| [Freddie Mac](https://search.stillhousedata.com/security/3132DWMX8) | $6.8M |
| [Fannie Mae](https://search.stillhousedata.com/security/31418FMJ3) | $6.8M |

## More

- [CIK 1104129 on SEC EDGAR (source of record)](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=1104129&type=&dateb=&owner=include&count=40)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/registrant/1104129.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.