Wealth manager, independent · Overland Park, KS
Mariner
Mariner, LLC · SEC-registered investment adviser · CRD 140195 · SEC 801-66632
At a glance
Mariner is an SEC-registered investment adviser based in Overland Park, Kansas, with $125B in regulatory assets under management as of its Form ADV filed August 5, 2026. It reports 54,583 individual clients, 22,322 of them high-net-worth, holding an average of about $2.1 million each, and 1,889 employees. That ranks it 10th among the nation’s 5,657 independent wealth management RIAs and 2nd of 74 in Kansas. It reports 2 custodians for its clients’ separately managed accounts: Charles Schwab and Fidelity.
Main office 913-904-5700marinerwealthadvisors.comLinkedInAs filed on Form ADV
- Regulatory AUM
- $125B
- Rank among independent wealth managers
- #10 of 5,657
- Rank among all SEC RIAs
- #217 of 17,210
- Rank in Kansas
- #2 of 74
- Individual clients
- 54,583
- High-net-worth clients
- 22,322
- Accounts
- 186,791
- Discretionary
- 98% of AUM
- Employees
- 1,889
- Advisory staff
- 933
- Offices
- 131
Owners and executives on its Form ADV
- Martin C. BicknellChief Executive Officer
- Anne J. DorianChief Risk Officer and CCO
- Cheryl R. BicknellChief Operating Officer
- Jeffrey A. PoeChief Financial Officer
- Maureen K. Kiefer-GoldenbergSenior Vice President, Compliance
- Deann M. ElmoreChief Services Officer
- Bradley D. RollinsChief Investment Officer
Custody and brokerage
Broker-dealer
Hybrid RIA
Mariner is a hybrid RIA: 108 of its employees are also registered representatives of a broker-dealer. It names affiliated broker-dealers: Msec, LLC and W G Securities, LLC.
- Msec, LLC ↗CRD 154327
An introducing broker-dealer: its trades clear through National Financial Services (Fidelity), which holds the brokerage accounts. Its annual audited report filed with the SEC, March 2026
- W G Securities, LLC ↗CRD 140869
It doesn’t hold client accounts or customer funds itself. Its annual audited report filed with the SEC, August 2026
Its Form ADV brochure (filed July 2026) names The Leaders Group as the broker-dealer its advisers are registered with.
(“Leaders Group”) , as applicable, or by engaging our associates, in their individual capacities, as registered representatives of MSEC or Leaders Group, will result in MSEC or Leaders Group and the related Mariner, LLC - Form ADV Part 2A J
Who it serves
| Client type | Clients | Regulatory AUM | Share |
|---|---|---|---|
| High-net-worth individuals | 22,322 | $105B | 84% |
| Individuals | 32,261 | $11B | 9% |
| Banking or thrift institutions | 56 | $4.0B | 3% |
| Pension and profit sharing plans | 458 | $3.8B | 3% |
| Corporations or other businesses | 257 | $880M | <1% |
| Charitable organizations | 145 | $684M | <1% |
| Insurance companies | 4 | $273M | <1% |
| Other investment advisers | 6 | $205M | <1% |
| State or municipal government entities | 1 | $13M | <1% |
| Pooled investment vehicles | 2 | $9M | <1% |
Private funds
Mariner reports 2 private funds with $11M in gross assets: private equity funds (Form ADV Item 7.B).
Disciplinary disclosures
Mariner answers yes to 6 disclosure items in Item 11 of Form ADV (criminal, regulatory or civil matters involving the firm or its advisory affiliates). Read the details on the SEC’s adviser search ↗
Services
- Financial planning
- Portfolio management for individuals and small businesses
- Portfolio management for pooled investment vehicles
- Portfolio management for businesses and institutions
- Pension consulting
- Selecting other advisers
- Periodicals or newsletters
- Educational seminars and workshops
- Other services
How it’s paid
- A percentage of assets under management
- Hourly charges
- Fixed fees
Form ADV and brochures on the SEC’s adviser search ↗marinerwealthadvisors.com ↗Mariner news and profile →
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The full record on Mariner
Ten years of SEC filings, its owners and contacts, and how it stacks up against its peers. Atlas members see all of it.
- Assets, accounts, clients and staff, ten years of filings
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- Growth over one, three and five years
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- Rank against 45 peers of its type and size
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- Owners and executives, with titles and stakes
- 7 namedLocked
- Main office, fax and compliance officer
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- Filing changes this year, with alerts
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Free while Atlas launches: create a free account and confirm your email. Every figure comes from SEC filings.
Similar-size RIAs in Kansas
All of Kansas →| Firm | Regulatory AUM | Clients |
|---|---|---|
| Creative PlanningOverland Park | $296B | 87,051 |
| Mariner Advisor NetworkOverland Park | $9.6B | 16,100 |
| Mariner IndependentOverland Park | $7.3B | 4,261 |
| Creativeone Wealth, LLCOverland Park | $6.3B | 22,064 |
| Cetera Planning PartnersLeawood | $4.2B | 4,748 |
| FAS Wealth Partners, Inc.Leawood | $3.8B | 1,524 |
Compare Mariner with
- Mariner vs Creative Planning $296B · Overland Park, KS
- Mariner vs Corient $165B · Miami, FL
- Mariner vs Cerity Partners LLC $162B · New York, NY
- Mariner vs Wealth Enhancement Advisory Services, LLC $122B · Plymouth, MN
- Mariner vs Pathstone $110B · Englewood, NJ
Background
Questions
How much does Mariner manage?
Mariner reports $125B in regulatory assets under management across 186,791 accounts, 98% of it on a discretionary basis, on its Form ADV filed August 5, 2026.
How many clients does Mariner have?
It reports 54,583 individual clients: 22,322 high-net-worth individuals and 32,261 other individuals. Individuals account for about 92% of its regulatory assets.
Where is Mariner headquartered?
Its main office is in Overland Park, Kansas. It reports 131 offices in total and 1,889 employees, 933 of whom perform investment advisory functions.
How does Mariner charge clients?
On Form ADV it lists these forms of compensation: a percentage of assets under management; hourly charges; fixed fees. Fees and minimums are set out in its Form ADV Part 2A brochure, available on the SEC’s adviser search.
What custodian does Mariner use?
It reports 2 custodians for its clients’ separately managed accounts: Charles Schwab and Fidelity. On Schedule D of its Form ADV filed August 5, 2026, it reports these amounts held: Charles Schwab ($64B); Fidelity ($49B). Form ADV lists only custodians holding 10% or more of separately managed account assets.
Is Mariner a hybrid RIA with a broker-dealer?
Mariner is a hybrid RIA: 108 of its employees are also registered representatives of a broker-dealer. It names affiliated broker-dealers: Msec, LLC and W G Securities, LLC. Msec, LLC clears through National Financial Services (Fidelity), according to its annual report filed with the SEC. Those representatives can also earn commissions on brokerage business through the broker-dealer, where different rules apply than for advisory accounts.
Is Mariner a fiduciary?
As an SEC-registered investment adviser, Mariner owes its advisory clients a fiduciary duty under the Investment Advisers Act of 1940, which includes duties of care and loyalty. 108 of its employees are also registered representatives of a broker-dealer, where different rules apply to brokerage recommendations.
Where these numbers come from
Every figure is Mariner’s own answer on its latest Form ADV, from the SEC’s registered-adviser list as of October 1, 2026: regulatory assets and accounts (Item 5.F), clients by type (5.D), employees (5.A and 5.B), compensation (5.E) and services (5.G). Custodians come from Schedule D 5.K(3) of its latest filing (2026-08-05), which lists those holding 10% or more of separately managed account assets and the amount at each. “Hybrid” means some employees are also registered representatives of a broker-dealer (Item 5.B(2)); affiliated broker-dealers are the related persons it lists in Item 7.A and Schedule D. Firm type comes from its own answers: broker-dealer firms are registered broker-dealers themselves (Item 6.A); private fund advisers manage mostly private funds (Item 7.B, 5.D); wealth managers manage at least half their assets for individuals (5.D). Its national rank compares it with every US-based independent wealth management RIA, the same field as The Largest RIAs. Figures are as of the firm’s last annual update, so they can lag recent deals and market moves. Regulatory AUM counts assets the firm continuously supervises and can differ from what a firm markets.
Not an endorsement or a recommendation. Before hiring any adviser, read its Form ADV Part 2A brochure and check its record on the SEC’s adviser search. How to check a financial advisor →