# John Henry O'Brien

John Henry O'Brien is an investment adviser representative (IAR) with state registration records since 2016, appearing at 5 firms. Currently registered with J.P. MORGAN SECURITIES LLC.

## Registration history (5)

| Firm | From | To | Current |
| --- | --- | --- | --- |
| [J.P. MORGAN SECURITIES LLC](https://search.stillhousedata.com/firm/79) | 2025-09-29 | present | Yes |
| [ALLIANCEBERNSTEIN L.P.](https://search.stillhousedata.com/firm/108477) | 2023-11-13 | 2025-10-02 | — |
| [NOMURA INVESTMENT MANAGEMENT BUSINESS TRUST](https://search.stillhousedata.com/firm/105390) | 2020-04-20 | 2023-09-21 | — |
| [DELAWARE CAPITAL MANAGEMENT ADVISERS, INC](https://search.stillhousedata.com/firm/152237) | 2017-10-18 | 2020-04-20 | — |
| [EATON VANCE MANAGEMENT](https://search.stillhousedata.com/firm/104859) | 2016-07-18 | 2017-09-11 | — |

## More

- [This representative on SEC IAPD (source of record)](https://adviserinfo.sec.gov/individual/summary/6450850)
- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/rep/6450850.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.