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
GO

Gregory W. Oconnor

Some features on this profile are disabled
CRD#: 4470058
GO

Professional summary

Being a previously registered professional could mean that this person is no longer operating under the supervision of the SEC or FINRA.

That means that the Securities and Exchange Commission may not be able to oversee the services that this specific professional is providing.

Gregory William Oconnor, who also goes by Gregory William O'connor, Gregory William VIskovich, was a registered financial professional .

Gregory is a previously registered financial professional and started their career in finance in 2001. Gregory had worked at 8 firms and has passed the Series 63, Series 56, Series 55, Series 7, Series 6, Series 4, Series 14 and Series 9 exams.

top-8-questions

Question & Answer

Are you a "fiduciary"?
No

Aliases

Gregory William O'connor | Gregory William Viskovich

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)

The CRS(Customer Relationship Summary) document is not provided.

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

Past

April 20, 2012 - June 27, 2013

ALLSTON TRADING LLC

BD
CRD#: 125499
CHICAGO, IL
Past

November 24, 2008 - April 11, 2012

WOLVERINE CAPITAL MARKETS LLC

BD
CRD#: 115376
CHICAGO, IL
Past

March 12, 2008 - April 11, 2012

WOLVERINE TRADING, LLC

BD
CRD#: 36848
CHICAGO, IL
Past

March 12, 2008 - April 11, 2012

WOLVERINE EXECUTION SERVICES, LLC

BD
CRD#: 120719
CHICAGO, IL
Past

April 18, 2006 - March 6, 2008

ARCHIPELAGO TRADING SERVICES, INC.

BD
CRD#: 15853
CHICAGO, IL
Past

May 18, 2005 - March 6, 2008

ARCHIPELAGO SECURITIES L.L.C.

BD
CRD#: 102500
CHICAGO, IL
Past

April 8, 2003 - April 21, 2005

WELLS FARGO CLEARING SERVICES, LLC

BD
CRD#: 19616
ST. LOUIS, MO
Past

November 28, 2001 - January 30, 2003

WADDELL & REED

BD
CRD#: 866
OVERLAND PARK, KS

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: 12/7/2001
Uniform Securities Agent State Law Examination
General Industry/Product Exam
RR
Series 56
Date: 7/13/2011
Proprietary Trader Qualification Examination
General Industry/Product Exam
RR
Series 55
Date: 8/27/2010
Limited Representative-Equity Trader Exam
General Industry/Product Exam
RR
Series 7
Date: 5/2/2003
General Securities Representative Examination
General Industry/Product Exam
RR
Series 6
Date: 11/27/2001
Investment Company Products/Variable Contracts Representative Examination
Principal/Supervisory Exam
RR
Series 4
Date: 10/9/2009
Registered Options Principal Examination
Principal/Supervisory Exam
RR
Series 14
Date: 9/25/2006
Compliance Officer Examination
Principal/Supervisory Exam
RR
Series 9
Date: 2/4/2005
General Securities Sales Supervisor - Options Module Examination

Current Firm

AT
ALLSTON TRADING LLC
ALLSTON TRADING LLC | ALLSTON TRADING, LLC

CRD#: 125499 / SEC#: , 8-65807

BD
Terminated by SEC on 12/30/2014
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
Mailing Address
Phone number
Established
Illinois since 12/31/2002
Firm type
Limited Liability Company
Fiscal year end
December
# of Employees

Documents

Direct owners and executive officers

NamePositionCRD#
ALLSTON HOLDINGS LLCPARENT/MEMBER
BIONDO, JAY ARTHURCHIEF COMPLIANCE OFFICER5995044
DEVLIN, KEVIN WILLIAMCHIEF FINANCIAL OFFICER/FINOP
JONES, CARLTON ROOSEVELTPRESIDENT4645926
LAZZO, STEPHEN KEITHCHIEF TECHNOLOGY OFFICER4457081
MAHAJAN, RAJ AMITCHIEF EXECUTIVE OFFICER2782381

Disclosures

Regulatory Event5

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

ALLSTON TRADING LLC

CRD#: 125499

TRUST BUT VERIFY

Monitor Gregory Oconnor

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
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