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

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
SO

Stephen M. Oshaughnessy

MARKETAXESS
New York, NY 10001
Some features on this profile are disabled
CRD#: 1371973
SO

Professional summary

Stephen Michael Oshaughnessy, who also goes by Stephen Michael O'shaughnessy, Stephen Michael Oshhaughnessy, is a registered financial professional currently at MARKETAXESS CORPORATION located in New York, New York.

Stephen is registered as a RR (Registered Representative) and started their career in finance in 2000. Stephen has worked at 4 firms and has passed the Series 63, SIE, Series 7 and Series 24 exams.

Question & Answer

Are you a "fiduciary"?
No

Aliases

Stephen Michael O'shaughnessy | Stephen Michael Oshhaughnessy

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 Stephen Michael Oshaughnessy'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

December 16, 2025 - Present

MARKETAXESS CORPORATION

Office #1: 55 Hudson Yards 15th Floor, New York, NY 10001
BD
CRD#: 44542
New York, NY
Past

April 13, 2015 - December 16, 2025

PRAGMA LLC

BD
CRD#: 136453
NEW YORK, NY
Past

October 5, 2010 - August 14, 2014

ENCLAVE CAPITAL LLC

BD
CRD#: 22732
NEW YORK, NY
Past

April 1, 2000 - May 27, 2010

THE GRISWOLD COMPANY, INCORPORATED

BD
CRD#: 32944
NEW YORK, NY

State Registrations and Notice Filings

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

Visual representation of state registrations

This advisor is not registered in any state.

Exams

State Security Law Exam
RR
Series 63
Date: 4/21/1986
Uniform Securities Agent State Law Examination
General Industry/Product Exam
RR
SIE
Date: 10/1/2018
Securities Industry Essentials Examination
General Industry/Product Exam
RR
Series 7
Date: 10/1/2000
General Securities Representative Examination
Principal/Supervisory Exam
RR
Series 24
Date: 5/18/2009
General Securities Principal Examination
SRO Registrations
RR
FINRA
SRO Registrations
RR
Investors' Exchange LLC

Current Firm

MC
MARKETAXESS CORPORATION
MARKETAXESS CORPORATION | TRADING EDGE, INC. | RFQ-HUB | PRAGMA

CRD#: 44542 / SEC#: , 8-50727

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
55 Hudson Yards 15th Floor, New York, NY 10001
Mailing Address
55 Hudson Yards 15th Floor, New York, NY 10001
Phone number
(212) 813-6000
Established
Delaware since 09/12/1997
Firm type
Corporation
Fiscal year end
December
Firm Size
Medium
# of Employees

FINRA licenses (50 States and Territories)

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

Documents

Direct owners and executive officers

NamePositionCRD#
MARKETAXESS HOLDINGS INC.SHAREHOLDER
CIANCIULLI, MICHAEL ROBERTPRINCIPAL FINANCIAL OFFICER6980135
CONCANNON, CHRISTOPHER RCHIEF EXECUTIVE OFFICER2169224
PINTOFF, SCOTT ERICGENERAL COUNSEL & CHIEF LEGAL OFFICER6281715
STEINFELD, RON EDWARDCHIEF COMPLIANCE OFFICER5747522

Disclosures

Regulatory Event1

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

MARKETAXESS CORPORATION

CRD#: 44542New York, NY 10001

TRUST BUT VERIFY

Monitor Stephen Oshaughnessy

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

Similar Advisors

Peter Faulkner Kettle
Peter KettleAdvisorCheck Check Mark
AMERIPRISE FINANCIAL SERVICES, LLC
PR
MINNEAPOLIS, MN
Richard Gaspare Dragotta
Richard DragottaAdvisorCheck Check Mark
LPL FINANCIAL LLC
IAR
RR
Paramus, NJ
Diane E Finnerty
Diane FinnertyAdvisorCheck Check Mark
MORGAN STANLEY
IAR
RR
New York, NY
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.© 2026 AdvisorCheck, an AIMR Analytics company. All rights reserved.