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AdvisorCensus / Financial advisors / Missouri / St. Louis / Duncker Streett & Co.

Duncker Streett & Co.

St. Louis, MOSEC-registered investment adviserCRD 110828

Filed as DUNCKER STREETT & CO. · Legal name Duncker, Streett & Co., LLC

Duncker Streett & Co. is an SEC-registered investment advisory firm in St. Louis, MO, registered since 2000, reporting $500 million to $1 billion in regulatory assets under management in its Form ADV filing dated May 8, 2026.

25 years
registered since 2000
$707,308,314
assets under management
2 arrangements
Percentage of assets, Fixed fees
7
disclosure items (Item 11)

Quick answers

From the filing

How is Duncker Streett & Co. compensated?

On its Form ADV (Item 5.E, October 2026), Duncker Streett & Co. reports these compensation arrangements: a percentage of assets under its management; fixed fees (other than subscription fees).

Where is Duncker Streett & Co. located?

Duncker Streett & Co.'s principal office is in St. Louis, MO, according to its Form ADV.

Is Duncker Streett & Co. registered with the SEC or a state?

Duncker Streett & Co. is an SEC-registered investment advisory firm, registered since 2000. Status as filed: Approved. CRD 110828.

How much does Duncker Streett & Co. manage?

Duncker Streett & Co. reports $707,308,314 in regulatory assets under management in its Form ADV filing dated May 8, 2026 (98% discretionary).

How have Duncker Streett & Co.'s assets and staff changed since 2021?

In the Form ADV data for Duncker Streett & Co.: Regulatory assets under management: $590,311,828 in the October 2021 data and $707,308,314 in the October 2026 data, up 20%. Total employees: 5 in October 2021 and 5 in October 2026. Assets under management move with markets as well as with clients coming and going.

What types of clients does Duncker Streett & Co. serve?

By number of clients on Form ADV Item 5.D: high net worth individuals (94); individuals (other than high net worth individuals) (71); charitable organizations (6).

Which custodians does Duncker Streett & Co. use?

Duncker Streett & Co.'s most recent Form ADV filing (Schedule D, Section 5.K(3)) lists Charles Schwab & Co., Inc. as a custodian holding 10% or more of its separately managed account assets.

Does Duncker Streett & Co. report any disciplinary disclosures?

Reports 7 disclosure items on Form ADV Item 11: yes answers to 7 questions about regulatory matters (11.C(2), 11.C(4), 11.C(5), 11.D(2), 11.D(4), 11.D(5), 11.E(2)). Each question covers the firm and its advisory affiliates, and one event can produce several yes answers. The detail of any item is on the firm's SEC record: https://adviserinfo.sec.gov/firm/summary/110828

Does Duncker Streett & Co. state an account minimum?

Its Form ADV Part 2A brochure dated March 25, 2026 says: "Generally, our minimum account size is $1,000,000, though this threshold requirement may be waived based on other considerations such as the account’s relationship to established clients or other factors."

What changed in Duncker Streett & Co.'s recent Form ADV filings?

In the June 2026 filing data: Updated its list of owners and control persons (Schedule A).

From the Form ADV filing

Every figure below is as the firm filed it with regulators, as of October 2026.

How the firm is compensated

Item 5.E
  • A percentage of assets under your management
  • Fixed fees (other than subscription fees)

Item 5.E lists how the firm is compensated for its advice; Items 5.B, 6.A, and 7.A show whether its people or related companies can also earn commissions. Percentage of assets, fixed, hourly, subscription, and performance-based fees come from clients (a performance-based fee depends on investment results); commissions come with a sale or a trade, often from the company behind the product. How fees, commissions, and other arrangements differ

Fees and minimums

Form ADV Part 2A

The brochure lists different fees for different services or strategies; see the brochure for them.

Account minimum: $1,000,000 (the brochure says it may be waived or negotiated)

The brochure's wording
Generally, our minimum account size is $1,000,000, though this threshold requirement may be waived based on other considerations such as the account’s relationship to established clients or other factors.

As stated in the firm's Form ADV Part 2A brochure dated March 25, 2026. Fees can differ by service and may be negotiable; the brochure is the complete statement. Read the brochure on the SEC's IAPD site

Regulatory assets under management

Item 5.F
$707,308,314

$707,308,314 as of October 2026, filing dated May 8, 2026.

Discretionary: $695,912,445.Non-discretionary: $11,395,869.

A measure of scale, not skill or returns. Discretionary means the firm decides trades; non-discretionary means clients approve each one. What assets under management means

Who the firm serves

Item 5.D
Individuals (other than high net worth individuals)
Clients 71 Assets $24,776,239 (4%)
High net worth individuals
Clients 94 Assets $485,430,298 (69%)
Pension and profit sharing plans (but not the plan participants or government pension plans)
Clients 2 Assets $12,512,821 (2%)
Charitable organizations
Clients 6 Assets $184,588,956 (26%)

A firm with no individual clients is an institutional manager even if it manages billions; the mix tells you whom the practice is built around.

Advisory services

Item 5.G
  • Portfolio management for individuals and/or small businesses
  • Portfolio management for businesses (other than small businesses) or institutional clients

Registration and firm details

Items 1, 2, 5
Legal name
Duncker, Streett & Co., LLC
Registration
SEC-registered investment adviser. Status as filed: Approved.
Registered since
2000 (25 years)
Employees
Total: 5. Performing investment advisory functions: 2.
Wrap fee program participation
No.
Custodians (Schedule D, Section 5.K(3))

Custodians holding 10% or more of the firm's separately managed account assets, as filed on Form ADV (Schedule D, Section 5.K(3)). A custodian holds client assets; it does not endorse or supervise the firm. AdvisorCensus has no relationship with any custodian.

States registered or notice-filed
7 states or jurisdictions
CAFLILMONCTXWY

SEC-registered investment advisers are examined by the SEC. SEC, state, and exempt registration

Disclosures

Item 11

7 Reports 7 disclosure items on Form ADV Item 11. View on IAPD.

Questions answered yes on this filing

Regulatory matters Items 11.C to 11.G

  • 11.C(2) Has the SEC or the CFTC ever found that the firm or an advisory affiliate was involved in a violation of SEC or CFTC regulations or statutes?
  • 11.C(4) Has the SEC or the CFTC ever entered an order against the firm or an advisory affiliate in connection with investment-related activity?
  • 11.C(5) Has the SEC or the CFTC ever imposed a civil money penalty on the firm or an advisory affiliate, or ordered the firm or an advisory affiliate to cease and desist from an activity?
  • 11.D(2) Has another federal regulator, a state regulator, or a foreign financial regulator ever found that the firm or an advisory affiliate was involved in a violation of investment-related regulations or statutes?
  • 11.D(4) In the past ten years, has another federal regulator, a state regulator, or a foreign financial regulator entered an order against the firm or an advisory affiliate in connection with investment-related activity?
  • 11.D(5) Has another federal regulator, a state regulator, or a foreign financial regulator ever denied, suspended, or revoked the registration or license of the firm or an advisory affiliate, prevented either by order from associating with an investment-related business, or restricted either one's activity?
  • 11.E(2) Has a self-regulatory organization or a commodities exchange ever found that the firm or an advisory affiliate was involved in a violation of its rules, other than a minor rule violation under a plan the SEC approved?

Each question covers the firm and its advisory affiliates: its current employees other than clerical staff, its officers, partners, and directors, and anyone who controls the firm or is controlled by it. One event can produce yes answers to several questions. SEC-registered advisers and exempt reporting advisers may leave out events more than ten years old, and may answer 11.A(2) and 11.B(2) for pending charges only. What happened, and who was involved, is on the Disclosure Reporting Pages of the IAPD record. Reading a firm's disclosures

Assets and staff over time

Items 5.A, 5.F
$590M 2021 $698M 2022 $539M 2023 $600M 2024 $665M 2025 $707M 2026
Data periodAssets under managementEmployeesFiling dated
October 2026$707,308,3145May 8, 2026
October 2025$665,007,4765April 22, 2025
October 2024$599,643,7505March 20, 2024
October 2023$538,521,6224March 28, 2023
October 2022$698,047,7315May 11, 2022
October 2021$590,311,8285March 31, 2021

Regulatory assets under management: $590,311,828 in the October 2021 data and $707,308,314 in the October 2026 data, up 20%.

Total employees: 5 in October 2021 and 5 in October 2026.

As filed in each year's data for the same month. Assets under management move with markets as well as with clients coming and going; they measure scale, not skill or returns. Most firms update these figures once a year.

Changes in the filing

Last 12 months
  1. June 2026
    • Updated its list of owners and control persons (Schedule A).
  2. April 2026
    • Employees performing advisory functions went from 3 to 2.

Compared month to month from the SEC's monthly adviser data and the state compilation feed. Owners and control persons are summarized, never named.

Websites listed on Form ADV

Item 1.I

Source: Form ADV, as of October 2026. Values appear as filed; a value the firm did not report is shown as "Not reported."

Cite this page

AdvisorCensus. Duncker Streett & Co. (CRD 110828): Form ADV filing data as of October 2026.
https://advisorcensus.com/firm/duncker-streett-and-co-st-louis-mo-110828