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Sean T. Marrin

CETERA INVESTMENT ADVISERS
DENVER, CO
Some features on this profile are disabled
CRD#: 2184102
SM
Sean Thomas MarrinCETERA INVESTMENT ADVISERS

Professional summary

Sean Thomas Marrin, who also goes by Sean T Marrin, is a registered financial advisor currently at CETERA INVESTMENT ADVISERS LLC located in Denver, Colorado and CETERA INVESTMENT SERVICES LLC located in El Segundo, California.

Sean is registered as an IAR (Investment Advisor Representative) and RR (Registered Representative) and started their career in finance in 1991. Sean has worked at 12 firms and has passed the Series 65, Series 63, Series 99TO, SIE, Series 7, Series 10, Series 9 and Series 8 exams.

Aliases

Sean T Marrin

Other business activities

Outside business activity is any business or activity undertaken by an advisor that is outside the scope of their relationship with their firm (e.g., consulting services, real estate, freelance work, teaching, etc.). Investors should stay informed about these activities to ensure no conflicts of interest.
1. NAME OF OTHER BUSINESS: REAL ESTATE INVESTMENT RELATED: NO NATURE OF BUSINESS: RENTAL PROPERTY START DATE: 06/2023 POSITION/TITLE/RELATIONSHIP: OWNER APX NUMBER OF HOURS PER WEEK: 1-2 APX NUMBER OF HOURS DURING TRADING HOURS: 1-2 BRIEF DESCRIPTION OF DUTIES: CONDO RENTAL UNIT COLLECT MONTHLY RENT, 1-2 HOURS A MONTH ON MAINTENANCE

Blog Corner

CRS (Client Relationship Summary) - RIA

Click below to view Sean Thomas Marrin's CRS (Customer Relationship Summary).
CRS (Customer Relationship Summary)

Certified licenses

Advisors may have various certifications and credentials from different organizations. AdvisorCheck highlights these seven certifications - AIF®, CFP®, ChFC®, CFA, CLU®, CIMA®, CPWA®
None

Experience

Current

August 3, 2026 - Present

CETERA INVESTMENT ADVISERS LLC

Office #2: 2301 Rosecrans Ave #5100, El Segundo, CA 90245
RIA
CRD#: 105644
DENVER, CO
Current

August 7, 2026 - Present

CETERA INVESTMENT SERVICES LLC

Office #1: 2301 Rosecrans Ave #5100, El Segundo, CA 90245
BD
CRD#: 15340
EL SEGUNDO, CA
Current

August 7, 2026 - Present

CETERA WEALTH SERVICES, LLC

Office #1: 2301 Rosecrans Ave #5100, El Segundo, CA 90245
BD
CRD#: 13572
EL SEGUNDO, CA
Current

August 7, 2026 - Present

CETERA FINANCIAL SPECIALISTS LLC

Office #1: 2301 Rosecrans Ave #5100, El Segundo, CA 90245
BD
CRD#: 10358
EL SEGUNDO, CA
Current

August 7, 2026 - Present

CETERA ADVISORS LLC

Office #1: 2301 Rosecrans Ave #5100, El Segundo, CA 90245
BD
CRD#: 10299
EL SEGUNDO, CA
Past

January 28, 2020 - July 3, 2025

RAYMOND JAMES & ASSOCIATES, INC.

RIA
CRD#: 705
DENVER, CO
Past

January 28, 2020 - July 3, 2025

RAYMOND JAMES & ASSOCIATES, INC.

BD
CRD#: 705
ST. PETERSBURG, FL
Past

July 9, 2013 - July 3, 2025

RAYMOND JAMES FINANCIAL SERVICES ADVISORS, INC

RIA
CRD#: 149018
DENVER, CO
Past

June 10, 2013 - July 3, 2025

RAYMOND JAMES FINANCIAL SERVICES, INC.

BD
CRD#: 6694
ST. PETERSBURG, FL
Past

November 3, 2011 - May 15, 2013

LPL FINANCIAL LLC

RIA
CRD#: 6413
SAN DIEGO, CA
Past

November 2, 2011 - May 15, 2013

LPL FINANCIAL LLC

BD
CRD#: 6413
SAN DIEGO, CA
Past

January 1, 1999 - October 10, 2011

CHARLES SCHWAB & CO., INC.

RIA
CRD#: 5393
ENGLEWOOD, CO
Past

December 22, 1993 - October 10, 2011

CHARLES SCHWAB & CO., INC.

BD
CRD#: 5393
ENGLEWOOD, CO
Past

March 18, 1993 - March 28, 1994

OPPENHEIMERFUNDS DISTRIBUTOR, INC.

BD
CRD#: 7834
NEW YORK, NY
Past

October 31, 1991 - May 8, 1992

CHATFIELD DEAN & CO., INC.

BD
CRD#: 14714
GREENWOOD VILLAGE, CO

Primary Firm SEC Registration

This SEC-registered firm can serve clients nationwide. Some states may require the firm to submit a notice filing if the firm has more than 5 clients or a physical office there. You can view these state-level filings under the section titled "State Registrations and Notice Filings".
CI
CETERA INVESTMENT ADVISERS LLC
CETERA ADVISOR NETWORKS | TERRA FINANCIAL PLANNING GROUP LTD | GENWORTH FINANCIAL ADVISERS CORPORATION | FIRST ALLIED ADVISORY SERVICES | CETERA INVESTMENT ADVISERS LLC | CETERA ADVISORS

CRD#: 105644 / SEC#: 801-20406

RIA
Registered Investment Advisory firm - (1/13/1984 Approved)

State Registrations and Notice Filings

Listed states reflect where the advisor is authorized to serve clients under state regulations.

IAR
means the advisor is registered as an Investment Advisor Representative in this state and is authorized to provide investment advice to clients there.
RR
indicates the advisor is registered as a Registered Representative in this state, allowing them to offer securities such as stocks, bonds, and mutual funds through a broker-dealer.

Visual representation of state registrations

IAR
Colorado
(8/3/2026)
RR
Colorado
(8/7/2026)

Exams

State Security Law Exam
IAR
Series 65
Date: 6/16/1997
Uniform Investment Adviser Law Examination
State Security Law Exam
RR
Series 63
Date: 11/7/1991
Uniform Securities Agent State Law Examination
General Industry/Product Exam
RR
Series 99TO
Date: 1/2/2023
Operations Professional Examination
General Industry/Product Exam
RR
SIE
Date: 10/1/2018
Securities Industry Essentials Examination
General Industry/Product Exam
RR
Series 7
Date: 10/30/1991
General Securities Representative Examination
Principal/Supervisory Exam
RR
Series 10
Date: 1/2/2023
General Securities Sales Supervisor - General Module Examination
Principal/Supervisory Exam
RR
Series 9
Date: 1/2/2023
General Securities Sales Supervisor - Options Module Examination
Principal/Supervisory Exam
RR
Series 8
Date: 2/9/1996
General Securities Sales Supervisor Examination (Options Module & General Module)
SRO Registrations
RR
FINRA

Current Firm

CI
CETERA INVESTMENT ADVISERS LLC
CETERA ADVISOR NETWORKS | TERRA FINANCIAL PLANNING GROUP LTD | GENWORTH FINANCIAL ADVISERS CORPORATION | FIRST ALLIED ADVISORY SERVICES | CETERA INVESTMENT ADVISERS LLC | CETERA ADVISORS

CRD#: 105644 / SEC#: 801-20406

RIA
Registered Investment Advisory firm - (1/13/1984 Approved)
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Contact information

Main Address
1450 American Lane 6th Floor, Suite 650, Schaumburg, IL 60173-2096
Mailing Address
Phone number
(310) 257-7880
Established
Firm type
Fiscal year end
# of Employees
7,705

SEC notice filing (53 States and Territories)

Documents

Customer Relationship Summary (CRS / SEC)Latest Form ADV

Regulatory assets under management

Total Number of Accounts584,487
AUM (Assets Under Management)$ 163,792,814,520

Accountant surprise examination report

Filing DateForm ADV-E CoverForm ADV-E Report
10/27/2025
Cover Page
Report
12/13/2024
Cover Page
Report
09/26/2023
Cover Page
Report

Red Flags

Disclosures can be potential red flags, including customer disputes, regulatory fines, employer terminations, bankruptcies, judgments, liens, or certain criminal activities.

Check for any disclosures as part of your thorough research when choosing an advisor.

Company Information

CETERA INVESTMENT ADVISERS LLC

CRD#: 105644Denver, CO

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