# AVANTIUM INVESTMENT MANAGEMENT (US) LLC

AVANTIUM INVESTMENT MANAGEMENT (US) LLC of NEW YORK, NY is an SEC-registered investment adviser.

## Registration

- CRD: 164703
- Type: SEC-registered investment adviser
- SEC file number: 801-77206
- Location: 142 WEST 57TH STREET, NEW YORK, NY, 10019
- Phone: 646-553-3938
- Latest filing: 2014-02-03
- Regulatory AUM: $648.9M
- Discretionary AUM: $648.9M
- Clients: 4
- Accounts: 3

## Officers, owners & control persons (5)

| Name | Role | Location |
| --- | --- | --- |
| [SIELING ARND EUGEN](https://search.stillhousedata.com/person/813774) | CEO; CHIEF COMPLIANCE OFFICER; OWNER | — |
| [HAIGH KAY OLIVER](https://search.stillhousedata.com/person/813775) | OWNER | — |
| [MCALLISTER IAN GERARD](https://search.stillhousedata.com/person/813776) | CHIEF RISK OFFICER | — |
| [HOLTTUM RICHARD NIKOLAS](https://search.stillhousedata.com/person/813783) | CHIEF COMPLIANCE OFFICER | — |
| [ADNAMS VAUGHAN BRIAN](https://search.stillhousedata.com/person/820604) | CHIEF RISK OFFICER | — |


## Related pages

- Form ADV Part 2 brochure: https://search.stillhousedata.com/firm/164703/brochure
- Similar advisers: https://search.stillhousedata.com/firm/164703/similar
- Related entities: https://search.stillhousedata.com/firm/164703/related
- SEC IAPD (source of record): https://adviserinfo.sec.gov/firm/summary/164703

---

Source: public SEC Form ADV 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.