DFX Intelligence

RIA Intelligence

Registered investment advisers, the advisors registered through them, the capital they report, the private vehicles they run and the people who own them, as a graph with a filing date behind every number. RAUM is what the adviser filed, a move is two registration dates, and a class is a rule you can read.

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SEC-registered adviser

M••••••••• R•• L••

Other adviserO'Fallon, MissouriCRD 309150SEC 801-121454websiteIAPD
Latest filing Feb 12, 2026
First filing on the tape May 11, 2021 · 20 filings
SEC status approved since Jun 8, 2021
RAUM
$446M
reported, Item 5.F
Discretionary
100%
of RAUM
Private clients
16%
$70.6M individuals and HNW
Advisors
3
registered through the firm on IAPD
RAUM per advisor
$149M
derived; firm RAUM over IAPD count
Employees
3
3 advisory (5.B.1)
Offices
0
beyond the principal office
Private funds
0
reported on Schedule D
History
20 filings and snapshots on the tape
RAUM$446M as of Feb 12, 2026
Jan 14, 2022$287M then
HNW client RAUM$40.6M as of Feb 12, 2026
Jan 14, 2022$29.7M then
State-registered IARs (5.B.3)3 as of Feb 12, 2026
Jan 14, 20223 then
Employees (5.A)3 as of Feb 12, 2026
Jan 14, 20223 then
Private funds: no history
RAUM +14% over the last fiscal year+18% a year over threeIARs 3 to 3
Practice profile
derived from the filing of Feb 12, 2026; every figure names its basis
Archetypes, each a printed rule
  • Institutional asset manager · institutional share (pensions, government, insurance, corporations, charities, banks, other advisers) at least 60 percent and private-client share under 20 percent
  • Retirement plan adviser · pension consulting activity (Item 5.G.6) and pension plans at least 25 percent of RAUM or at least 25 pension-plan clients
RAUM per advisor
$149MderivedRAUM over IAPD advisors; not a book size
Clients per advisor
42derivedindividual and HNW clients (5.D) over advisors
Average HNW client
$1.8MderivedHNW RAUM over HNW clients
Average account
$2.2MderivedRAUM over accounts (5.F.2.f)
Discretionary
100%derivedof RAUM
Institutional
84%derivedpensions, charities, corporations, government, insurance, banks, other advisers
Employees per advisor
1.0derivedItem 5.A over advisors
Advisors per office
3.0derived1 offices incl. principal (1.F.5)
RAUM growth, one year
+14%derivedbetween the last two annual amendments
Advisor growth, one year
+0.0%derivedItem 5.B.3 between annual amendments
Client growth, one year
-3.1%derived
Compensation
percentage of assets, hourly, fixed feesreportedItem 5.E
Advisory activities
financial planning, portfolio management for individuals, pension consulting, educational seminarsreportedItem 5.G
Ownership
no PE, bank or public-company owner found on Schedule Aderived
Advisor book size
not public; not estimatedreported
Also answered yes on Form ADV
  • buys or sells securities as principal to or from clients (8.A.2)
  • has discretionary authority over which securities are bought or sold (8.C.1)
  • receives research or other products from a broker-dealer, soft dollars (8.E)
Where the RAUM sits
Form ADV Item 5.D, latest filing
  • Pension and profit-sharing plans$376M84%
  • High-net-worth individuals$40.6M9.1%
  • Individuals$30.0M6.7%
Individual clients
104reported
HNW clients
23reported
Pension plan clients
5reported
Charitable clients
n/areported
Accounts
206reported
Financial planning clients
0reported
Wrap fee programs
noreported
Custody of client assets
noreported
Compensation
% of AUM, fixed, hourlyreported
Class basis
private_client_share=0.16 fund_share=0.0 institutional_share=0.84 related_bd=false related_bank=false bd_reps=0.0derived
Advisors registered through the firm
3 on IAPD today, longest tenure first
NameBranchHere sinceIn industryPrior firms
R••••• S••••• O•••••O'Fallon, MoJul 6, 202033 y4
R•••••• L•• C•••••Ballwin, Mo Aug 24, 202032 y4
N••••••• S• O•••••Certified Financial PlannerO'Fallon, MoMar 3, 202118 y5
Advisor movement
0 left, 0 joined in 12 months
Private funds
No private fund reported.
Owners and control persons
Schedule A and B, latest filing
  • C•••••• R••••••• L•• · Managing Partner/Investment Advisor Representativecontrol
    since 08/2020 · owns 25% to 50%
  • O•••••• N•••••••• S• · Chief Compliance Officer/Investment Advisor Representativecontrol
    since 02/2021 · owns 25% to 50%
  • O•••••• R•••••• S••••• · Managing Partner/Investment Advisor Represetativecontrol
    since 07/2019 · owns 25% to 50%
Related persons
Schedule D 7.A
No related person reported.
Office movement
IAPD branch city; joins and departures in 12 months
OfficeAdvisorsJoinedLeftTeams outForming
Ofallon, Mo300
Offices
Schedule D 1.F, the 25 largest
No branch office listed.
What changed
consecutive filings, newest first
  • Accounts · 209 to 206
    Jan 15, 2025 to Feb 12, 2026
  • HNW clients · 26 to 23
    Jan 15, 2025 to Feb 12, 2026
  • Individual clients · 105 to 104
    Jan 15, 2025 to Feb 12, 2026
  • Financial planning clients · 1-10 to 0
    Jan 15, 2025 to Feb 12, 2026
  • Discretionary RAUM · $392M to $446M
    Jan 15, 2025 to Feb 12, 2026
  • HNW RAUM · $37.9M to $40.6M
    Jan 15, 2025 to Feb 12, 2026
  • Individual RAUM · $27.8M to $30.0M
    Jan 15, 2025 to Feb 12, 2026
  • Pension RAUM · $327M to $376M
    Jan 15, 2025 to Feb 12, 2026
  • RAUM · $392M to $446M
    Jan 15, 2025 to Feb 12, 2026
  • Accounts · 136 to 209
    Jul 16, 2024 to Jan 15, 2025
  • HNW clients · 102 to 26
    Jul 16, 2024 to Jan 15, 2025
  • Individual clients · 29 to 105
    Jul 16, 2024 to Jan 15, 2025
  • Financial planning clients · 1-10 to 1-10
    Jul 16, 2024 to Jan 15, 2025
  • Discretionary RAUM · $375M to $392M
    Jul 16, 2024 to Jan 15, 2025
  • HNW RAUM · $40.1M to $37.9M
    Jul 16, 2024 to Jan 15, 2025
  • Individual RAUM · $22.4M to $27.8M
    Jul 16, 2024 to Jan 15, 2025
  • Pension RAUM · $312M to $327M
    Jul 16, 2024 to Jan 15, 2025
  • RAUM · $375M to $392M
    Jul 16, 2024 to Jan 15, 2025
  • Accounts · 134 to 136
    Jan 31, 2024 to Jul 16, 2024
  • HNW clients · 27 to 102
    Jan 31, 2024 to Jul 16, 2024
  • Individual clients · 102 to 29
    Jan 31, 2024 to Jul 16, 2024
  • Discretionary RAUM · $341M to $375M
    Jan 31, 2024 to Jul 16, 2024
  • HNW RAUM · $36.6M to $40.1M
    Jan 31, 2024 to Jul 16, 2024
  • Individual RAUM · $21.0M to $22.4M
    Jan 31, 2024 to Jul 16, 2024
  • Pension RAUM · $283M to $312M
    Jan 31, 2024 to Jul 16, 2024
  • RAUM · $341M to $375M
    Jan 31, 2024 to Jul 16, 2024
  • Accounts · 149 to 134
    Oct 13, 2023 to Jan 19, 2024
  • HNW clients · 19 to 27
    Oct 13, 2023 to Jan 19, 2024
  • Individual clients · 100 to 102
    Oct 13, 2023 to Jan 19, 2024
  • Pension plan clients · unset to 5.0
    Oct 13, 2023 to Jan 19, 2024
  • Insurance-licensed employees · 1 to 0
    Oct 13, 2023 to Jan 19, 2024
  • Financial planning clients · 0 to 1-10
    Oct 13, 2023 to Jan 19, 2024
  • Discretionary RAUM · $310M to $341M
    Oct 13, 2023 to Jan 19, 2024
  • HNW RAUM · $29.3M to $36.6M
    Oct 13, 2023 to Jan 19, 2024
  • Individual RAUM · $24.9M to $21.0M
    Oct 13, 2023 to Jan 19, 2024
  • Pension RAUM · $256M to $283M
    Oct 13, 2023 to Jan 19, 2024
  • RAUM · $310M to $341M
    Oct 13, 2023 to Jan 19, 2024
  • Accounts · 137 to 149
    Jan 18, 2023 to Oct 12, 2023
  • Individual clients · 84 to 100
    Jan 18, 2023 to Oct 12, 2023
  • Discretionary RAUM · $274M to $310M
    Jan 18, 2023 to Oct 12, 2023
Signals
1 dated events
  • M••••••••• R•• L•• filed its initial SEC registration (Form ADV)
    May 11, 2021 · First SEC registration · fact
Across DFX
shared identifiers only, never a name match
No identifier-backed link to the venture, private equity, family office or sponsor graphs.
How to reach
public business contact points only, each with its source
Firm profile
linkedin.com/company/mainstreet-ria-llcreportedpublic record, Form ADV, Sep 18, 2026
Website
mainstreet-ria.comreportedpublic record, Form ADV, Sep 18, 2026
Principal office phone
(888) 801-0325reportedpublic record, Form ADV, Feb 12, 2026
Provenance
Form ADV
SEC filing data 2011 to 2024 and the monthly roster 2025 onreportedadviserinfo.sec.gov
Advisors
IAPD individual compilation feed, dailyreportedadviserinfo.sec.gov
Class
Other adviserderiveda rule over Items 5.D and 7.A
RAUM per advisor
$149Mderivedfirm RAUM over the IAPD count; not a book size
Loaded
Sep 14, 2026