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

Sean D. Siri

GTS SECURITIES LLC
NEW YORK, NY 10011
Some features on this profile are disabled
CRD#: 1479182
SS

Professional summary


Sean D Siri, who also goes by Sean Denis Siri, is a registered financial professional currently at GTS SECURITIES LLC located in New York, New York.

Sean is registered as a RR (Registered Representative) and started their career in finance in 2000. Sean has worked at 10 firms and has passed the Series 63, Series 99TO, Series 57TO, SIE, Series 55, Series 7, Series 21 and Series 25 exams.

top-8-questions

Question & Answer


Are you a "fiduciary"?
No

Aliases


Sean Denis Siri

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 Sean D Siri's 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

May 20, 2019 - Present

GTS SECURITIES LLC

Office #1: 625 Avenue Of The Americas 3rd Floor, New York, NY 10011
BD
CRD#: 149224
NEW YORK, NY
Past

October 16, 2013 - May 20, 2019

CANTOR FITZGERALD & CO.

BD
CRD#: 134
NEW YORK, NY
Past

December 22, 2009 - September 20, 2013

VIRTU AMERICAS LLC

BD
CRD#: 149823
JERSEY CITY, NJ
Past

June 5, 2009 - November 8, 2012

KNIGHT CAPITAL AMERICAS, L.P.

BD
CRD#: 38599
JERSEY CITY, NJ
Past

January 28, 2009 - May 5, 2009

SAL EQUITY TRADING, GP

BD
CRD#: 29337
BALA CYNWYD, PA
Past

November 5, 2008 - May 5, 2009

SUSQUEHANNA SECURITIES, LLC

BD
CRD#: 35874
BALA CYNWYD, PA
Past

May 29, 2007 - May 5, 2009

SIG INDEX SPECIALISTS, LLC

BD
CRD#: 120014
NEW YORK, NY
Past

June 20, 2005 - June 1, 2007

SIG SPECIALISTS, INC.

BD
CRD#: 21831
NEW YORK, NY
Past

March 16, 2001 - June 17, 2005

LABRANCHE & CO. LLC

BD
CRD#: 32661
NEW YORK, NY
Past

October 1, 2000 - March 16, 2001

ROBB PECK MCCOOEY SPECIALIST CORPORATION

BD
CRD#: 32660
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
New York
(5/20/2019)

Exams


State Security Law Exam
RR
Series 63
Date: 9/17/2018
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
Series 57TO
Date: 1/2/2023
Securities Trader Exam
General Industry/Product Exam
General Industry/Product Exam
RR
Series 55
Date: 2/23/2009
Limited Representative-Equity Trader Exam
General Industry/Product Exam
General Industry/Product Exam
RR
Series 21
Date: 4/11/2000
NYSE Front Line Specialist Clerk
General Industry/Product Exam
RR
Series 25
Date: 9/30/1999
NYSE Trading Assistant Examination
SRO Registrations
RR
Cboe BYX Exchange, Inc.
SRO Registrations
RR
Cboe BZX Exchange, Inc.
SRO Registrations
RR
Cboe EDGA Exchange, Inc.
SRO Registrations
RR
Cboe EDGX Exchange, Inc.
SRO Registrations
RR
FINRA
SRO Registrations
RR
Investors' Exchange LLC
SRO Registrations
RR
MEMX LLC
SRO Registrations
RR
MIAX PEARL, LLC
SRO Registrations
RR
NYSE American LLC
SRO Registrations
RR
NYSE Arca, Inc.
SRO Registrations
RR
NYSE National, Inc.
SRO Registrations
RR
NYSE Texas, Inc.
SRO Registrations
RR
Nasdaq BX, Inc.
SRO Registrations
RR
Nasdaq PHLX LLC
SRO Registrations
RR
Nasdaq Stock Market
SRO Registrations
RR
New York Stock Exchange

Current Firm


GS
GTS SECURITIES LLC
GLOBAL TRADING SYSTEMS | GTS SECURITIES LLC | GTS MISCHLER

CRD#: 149224 / SEC#: , 8-68126

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
625 Avenue Of Americas 3rd Floor, New York, NY 10011
Mailing Address
625 Avenue Of Americas 3rd Floor, New York, NY 10011
Phone number
(212) 715-2830
Established
Delaware since 12/03/2008
Firm type
Limited Liability Company
Fiscal year end
December
Firm Size
Small
# of Employees

FINRA licenses (2 States and Territories)


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

Documents


Direct owners and executive officers


NamePositionCRD#
GTS FINANCIAL LLCHOLDING COMPANY/CLASS A MEMBER
GILLETTE, CHARLES PTRADING AND MARKETS CHIEF COMPLIANCE OFFICER3174027
NAZEM, DARIUSHCHIEF OPERATING OFFICER4930821
ROMANELLO, PATRICK JOSEPHCORE BROKER DEALER CHIEF COMPLIANCE OFFICER5378090
RUBENSTEIN, ARI MCO-FOUNDER AND CHIEF EXECUTIVE OFFICER4134798
TIRIOLO, CHRISTIAN JOHNFINOP, CHIEF FINANCIAL OFFICER, CHIEF OPERATIONS OFFICER3063877

Disclosures


Regulatory Event38

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


GTS SECURITIES LLC

CRD#: 149224New York, NY 10011

TRUST BUT VERIFY

Monitor Sean Siri

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

Similar Advisors


Richard Gaspare Dragotta
Richard DragottaAdvisorCheck Check Mark
LPL FINANCIAL LLC
IAR
RR
Paramus, NJ
Peter Faulkner Kettle
Peter KettleAdvisorCheck Check Mark
AMERIPRISE FINANCIAL SERVICES, LLC
IAR
RR
Brooklyn, NY
Diane E Finnerty
Diane FinnertyAdvisorCheck Check Mark
MORGAN STANLEY
IAR
RR
New York, NY
footer-logo

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.
Powered ByAIRM Analytics