# BlackRock Long Duration Bond Portfolio — new fund registration

BLACKROCK FUNDS registered 1 new fund series on Form 485APOS, filed 2006-07-17. Featured series: BlackRock Long Duration Bond Portfolio.

## Registration

- Registrant / trust: BLACKROCK FUNDS
- CIK: 0000844779
- Form: 485APOS
- Filed: 2006-07-17
- State of incorporation: MA
- Accession: 0001193125-06-147811

## Series & classes (4)

| Series | Class | Ticker | New |
| --- | --- | --- | --- |
| [BlackRock Long Duration Bond Portfolio](https://search.stillhousedata.com/fund/S000013627) | Investor A Shares | — | Yes |
| [BlackRock Long Duration Bond Portfolio](https://search.stillhousedata.com/fund/S000013627) | Institutional Shares | — | Yes |
| [BlackRock Long Duration Bond Portfolio](https://search.stillhousedata.com/fund/S000013627) | BlackRock Shares | — | Yes |
| [BlackRock Long Duration Bond Portfolio](https://search.stillhousedata.com/fund/S000013627) | R Shares | — | Yes |

## Other filings by this registrant (15)

- [485APOS — 2026-07-27](https://search.stillhousedata.com/launch/0001193125-26-318136)
- [485APOS — 2026-06-29](https://search.stillhousedata.com/launch/0001193125-26-288711)
- [485APOS — 2026-05-08 (1 new series)](https://search.stillhousedata.com/launch/0001193125-26-214946)
- [485APOS — 2025-07-28](https://search.stillhousedata.com/launch/0001193125-25-166546)
- [485APOS — 2025-07-28](https://search.stillhousedata.com/launch/0001193125-25-166460)
- [485APOS — 2025-07-28](https://search.stillhousedata.com/launch/0001193125-25-166292)
- [485APOS — 2025-06-27](https://search.stillhousedata.com/launch/0001193125-25-151296)
- [485APOS — 2025-03-06 (3 new series)](https://search.stillhousedata.com/launch/0001193125-25-048550)
- [485APOS — 2024-11-29](https://search.stillhousedata.com/launch/0001193125-24-268082)
- [485APOS — 2024-07-05 (1 new series)](https://search.stillhousedata.com/launch/0001193125-24-175552)
- [485APOS — 2024-07-05 (1 new series)](https://search.stillhousedata.com/launch/0001193125-24-175556)
- [485APOS — 2023-03-03 (3 new series)](https://search.stillhousedata.com/launch/0001193125-23-060060)

## More

- [Registrant profile: BLACKROCK FUNDS](https://search.stillhousedata.com/registrant/844779)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/launch/0001193125-06-147811.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.