AdvisorCheck - Find and Connect with Top Financial Advisors on Your Terms
Advisor Search
Why Advisor Check

We're Here To Help

AdvisorCheck empowers you to find, evaluate, and monitor financial advisors with confidence and clarity.

Advisor Monitoring

Financial advisor's situations can change, sometimes without notice. AdvisorCheck's Monitoring tool helps you avoid surprises and stay on top of your financial health.

Firm Stability Insights

The stability of your financial advisor's firm has a significant impact in the security and quality of service you receive. Our tool provides historical data and key insights over time to help you make informed, confident decisions.

Pricing
For Advisors
MM

Marvin Markus

SIEBERT WILLIAMS SHANK & CO.
Highland Beach, FL
Some features on this profile are disabled
CRD#: 1018607
MM

Professional summary

Marvin Markus is a registered financial professional currently at SIEBERT WILLIAMS SHANK & CO., LLC located in Highland Beach, Florida.

Marvin is registered as a RR (Registered Representative) and started their career in finance in 1992. Marvin has worked at 4 firms and has passed the Series 63, Series 52TO, Series 79TO, SIE, Series 50, Series 7, Series 24 and Series 53 exams.

top-8-questions

Question & Answer

Are you a "fiduciary"?
No

Aliases

None

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.
The advisor shows no other business activity.

Blog Corner

CRS (Client Relationship Summary) - BD

Click below to view Marvin Markus'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

March 24, 2023 - Present

SIEBERT WILLIAMS SHANK & CO., LLC

Office #2: 701 South Olive Avenue Suite 103, West Palm Beach, FL 33401
BD
CRD#: 42568
Highland Beach, FL
Past

March 17, 1998 - March 29, 2023

GOLDMAN SACHS & CO. LLC

BD
CRD#: 361
NEW YORK, NY
Past

January 28, 1995 - March 4, 1998

UBS FINANCIAL SERVICES INC.

BD
CRD#: 8174
WEEHAWKEN, NJ
Past

April 9, 1992 - January 28, 1995

KIDDER, PEABODY & CO. INCORPORATED

BD
CRD#: 7613
NEW YORK, NY

State Registrations and Notice Filings

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

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

RR
Florida
(3/24/2023)
RR
New York
(3/24/2023)

Exams

State Security Law Exam
RR
Series 63
Date: 1/16/2002
Uniform Securities Agent State Law Examination
General Industry/Product Exam
RR
Series 52TO
Date: 1/2/2023
Municipal Securities Representative Examination
General Industry/Product Exam
RR
Series 79TO
Date: 1/2/2023
Investment Banking Registered Representative Examination
General Industry/Product Exam
RR
SIE
Date: 10/1/2018
Securities Industry Essentials Examination
General Industry/Product Exam
RR
Series 50
Date: 3/3/2017
Municipal Advisor Representative Qualification Exam
General Industry/Product Exam
RR
Series 7
Date: 4/7/1992
General Securities Representative Examination
Principal/Supervisory Exam
RR
Series 24
Date: 4/13/2009
General Securities Principal Examination
Principal/Supervisory Exam
RR
Series 53
Date: 8/13/1993
Municipal Securities Principal Examination
SRO Registrations
RR
FINRA

Current Firm

SW
SIEBERT WILLIAMS SHANK & CO., LLC
SIEBERT CISNEROS SHANK & CO., L.L.C. | SIEBERT, BRANDFORD, SHANK & CO., L.L.C. | SIEBERT WILLLIAMS SHANK | SIEBERT WILLIAMS SHANK & CO., LLC

CRD#: 42568 / SEC#: , 8-49877

BD
Broker-Dealer Firm Regulated by FINRA (New York district office)
Upgrade to AdvisorCheck Premium
Get A Biweekly Pulse, AutomaticallyReceive biweekly alerts automatically. Stay informed and proactive.
Catch Firm-Level Red Flags SoonerCatch leadership changes and disclosures early, before issues escalate.
See Trends. Not Just SnapshotsMonitor firm stability metrics like AUM and advisor ratios over time.

Contact information

Main Address
100 Wall Street 18th Floor, New York, NY 10005
Mailing Address
100 Wall Street 18th Floor, New York, NY 10005
Phone number
(646) 775-4850
Established
Delaware since 03/10/1997
Firm type
Limited Liability Company
Fiscal year end
December
Firm Size
Small
# of Employees

FINRA licenses (50 States and Territories)

Blank US states mapAlaskaHawaiiAlabamaArkansasArizonaCaliforniaColoradoConnecticutDelawareFloridaGeorgiaIowaIdahoIllinoisIndianaKansasKentuckyLouisianaMassachusettsMarylandMaineMichiganMinnesotaMissouriMississippiMontanaNorth CarolinaNorth DakotaNebraskaNew HampshireNew JerseyNew MexicoNevadaNew YorkOhioOklahomaOregonPennsylvaniaRhode IslandSouth CarolinaSouth DakotaTennesseeTexasUtahVirginiaVermontWisconsinWest VirginiaWyoming

Documents

Customer Relationship Summary (CRS / FINRA)

Direct owners and executive officers

NamePositionCRD#
SHANK WILLIAMS CISNEROS, LLCOWNER
CALABRISOTTO, DIANNE NMNAML OFFICER1273900
CALABRISOTTO, DIANNE NMNCHIEF COMPLIANCE OFFICER & COO1273900
CHANDA, ATEESH SINGHCHIEF LEGAL OFFICER6973151
DIAZ, DANIELFINANCIAL PRINCIPAL2214417
HALL, GARYCO-PRESIDENT4393662
SHANK-WERDLOW, SUZANNE FRANCESCEO, DIRECTOR OF PARENT1860931
THOMPSON, WILLIAM COLRIDGE JRCHIEF ADMINISTRATIVE OFFICER2316101
WARNER, SOBANI MULENGACO-PRESIDENT1732009

Disclosures

Regulatory Event4

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

SIEBERT WILLIAMS SHANK & CO., LLC

CRD#: 42568Highland Beach, FL

TRUST BUT VERIFY

Monitor Marvin Markus

Get automatic monthly alerts on:
Job or Firm Moves
Licensing Changes
Client Complaints
New Red Flags
Contact Information Updates

Similar Advisors

Stephen Albert Zahka
Stephen ZahkaAdvisorCheck Check Mark
EDWARD JONES
IAR
RR
Marlborough, MA
Frank Horace Moore III
Frank MooreAdvisorCheck Check Mark
UBS FINANCIAL SERVICES INC.
IAR
RR
Greenwich, CT
Marshall Lee Rosen
Marshall RosenAdvisorCheck Check Mark
OSAIC WEALTH, INC.
IAR
RR
Fort Lauderdale, FL
footer-logo
How We Help
Advisor Search
Find Advisors by State
Blog
Glossary
For Advisors
About Us
Help Center
Terms Of UsePrivacy PolicySubscription Policy
Help Center
AdvisorCheck does not offer investment advice and should not replace discussions with professional accounting, tax, legal or financial advisors.© 2025 AdvisorCheck, an AIMR Analytics company. All rights reserved.