# Mainstreet RIA

Mainstreet RIA is a Bank / Wealth / Trust based in O'Fallon, United States.

## Overview

- **Organization type:** Bank / Wealth / Trust
- **Headquarters:** O'Fallon, United States
- **Region:** North America
- **Address:** O'Fallon, MO, United States
- **Founded:** 2019
- **Assets under management:** Undisclosed
- **Website:** mainstreet-ria.com
- **LinkedIn:** https://www.linkedin.com/company/mainstreet-ria-llc

## Regulatory record

- **CRD number:** 309150
- **SEC file number:** 801-121454
- **Registration status:** Registered
- **Reports private funds:** No
- **IAPD record:** https://adviserinfo.sec.gov/firm/summary/309150

## About

Mainstreet RIA was established in 2019 by Joseph Burchett in O'Fallon, Missouri, a western suburb of St. Louis. The firm operates as a registered investment advisor, which legally obligates it to a fiduciary standard — a structural distinction from broker-dealer models that remain prevalent in the region's wealth management landscape. The firm's client base spans individuals, high-net-worth families, and corporate accounts, reflecting a broad-service rather than ultra-niche positioning within the Midwest advisory market. The firm's service architecture covers financial planning, asset management, and investment management, though specific asset-class weightings and portfolio construction methodologies are not publicly documented. The firm's geographic footprint is concentrated in the St. Louis metropolitan area, serving clients primarily through its O'Fallon office. Mainstreet RIA operates within a competitive landscape of independent advisors in the St. Louis region. The firm's scale — measured by assets under management, client count, or team size — is not publicly disclosed. The RIA structure permits the firm to custody client assets at third-party institutions, separating asset custody from advisory services, which provides a layer of client protection not present in broker-dealer or bank-trust models. No adjacent philanthropic vehicles, real-asset arms, or co-investment clubs are publicly associated with the firm. Structurally, Mainstreet RIA's differentiator is its fiduciary RIA designation in a market where hybrid broker-RIA and insurance-affiliated advisory practices are common. The firm's succession planning, ownership structure beyond Joseph Burchett, and any institutional or multi-family-office ambitions are not publicly documented.

## Sectors

- Financial Services

## People

- Joseph Burchett — Advisor, Owner

## Related profiles

- [Mainstay Capital Management](https://altss.com/profile/mainstay-capital-management)
- [Maitland Group](https://altss.com/profile/maitland-group)

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Last updated: 2026-08-11T02:43:31.692Z

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