Mainstreet Ria LLC
Firm details
- Headquarters
- O Fallon, Missouri
- CRD number
- 309150
- Registered since
- June 8, 2021
- Website
- mainstreet-ria.com
- Custodians
- COREBRIDGE RETIRMENT SERVICES, CHARLES SCHWAB & CO., INC.
- Fee structure
- Percentage of AUM, Hourly Charges, Fixed Fees
- Client types
- Pension & Profit Sharing Plans83.91%
- Individuals10%
- HNWI6.09%
- Services
- Financial PlanningPortfolio Management for IndividualsPension ConsultingEducational Seminars / Workshops
Firm profile
FINTRXOverview
Mainstreet Ria LLC is an independent limited liability company that provides advisory services to high-net-worth individuals, families and select institutional clients. The firm is SEC-registered (registered in 2021) and is owned by an individual principal. Its fee arrangements include percentage-of-AUM billing alongside hourly and fixed-fee options. Core advisory capabilities listed by the firm include financial planning, portfolio management for individuals and small businesses, pension consulting services, and educational seminars and workshops. The firm does not identify as an active ESG investor, does not operate as a multi-state adviser, and is not designated as a capital allocator.
Assets & Accounts
Investments & Alternatives
Location & Offices
Investment profile
FINTRXTraditional investments used
Alternative investments used
Active ESG investor
Technology & operations
FINTRXCRM & tech providers
TAMPs used
Clients
FINTRXClient base
Client personas
Asset composition
- Public Funds/Mutual Funds82%
- Other9%
- US Government Bonds7%
- Exchange Traded Equities2%
Owners & executives
1 of 1Nicholas Oldham
Chief Compliance OfficerCRD 5379115
Contacts
2 of 2Robert Oldham
Managing MemberCRD 2288379

Richard Counts
Co-FounderCRD 2428369
Wealth teams
FINTRXNewly hired reps
FINTRXRecent M&A activity
FINTRXRecent filings
FINTRXAwards
FINTRXLocation
O Fallon, MO
Saint Charles
Location
O Fallon, MO
Headquartered in O Fallon, MO, anchoring the St. Louis-St. Charles-Farmington, MO-IL metro in the Midwest.
- Metro area
- St. Louis-St. Charles-Farmington, MO-IL
- Region
- Midwest
- County
- Saint Charles
- Address
- 6700 Keaton Corporate Pkwy
- Time zone
- CT (UTC-6)
- Office locations
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