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
DO

Diana S. Owusu

GT SECURITIES
Los Angeles, CA 90094
Some features on this profile are disabled
CRD#: 4957581
DO

Professional summary

Diana Stanley Owusu, who also goes by Diana Stanley Owusu, Diana Ama Owusu-acheampong, Diana Stanley Owusu-acheampong, Diana Ama Stanley Owusu, Diana Stanley Owusu, Diana Stanley-owusu, is a registered financial professional currently at GT SECURITIES, INC. located in Los Angeles, California.

Diana is registered as a RR (Registered Representative) and started their career in finance in 2005. Diana has worked at 17 firms and has passed the Series 66, Series 63, Series 7TO, Series 6TO, SIE, Series 7, Series 6 and Series 24 exams.

Question & Answer

Are you a "fiduciary"?
No

Aliases

Diana Stanley Owusu | Diana Ama Owusu-Acheampong | Diana Stanley Owusu-Acheampong | Diana Ama Stanley Owusu | Diana Stanley Owusu | Diana Stanley-Owusu

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 Diana Stanley Owusu'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

November 21, 2025 - Present

GT SECURITIES, INC.

Office #1: 12130 Millennium Dr Suite 300, Los Angeles, CA 90094
BD
CRD#: 116012
Los Angeles, CA
Past

June 8, 2023 - December 5, 2023

NORTHWESTERN MUTUAL INVESTMENT SERVICES, LLC

RIA
CRD#: 2881
RIVERVIEW, FL
Past

June 8, 2023 - December 5, 2023

NORTHWESTERN MUTUAL INVESTMENT SERVICES, LLC

BD
CRD#: 2881
MILWAUKEE, WI
Past

October 14, 2021 - November 23, 2022

CETERA INVESTMENT SERVICES LLC

BD
CRD#: 15340
OLYMPIA, WA
Past

October 7, 2021 - November 23, 2022

CETERA INVESTMENT ADVISERS LLC

RIA
CRD#: 105644
OLYMPIA, WA
Past

June 5, 2019 - May 15, 2020

B. RILEY WEALTH ADVISORS, INC.

RIA
CRD#: 115927
BOCA RATON, FL
Past

April 1, 2019 - May 15, 2020

NATIONAL SECURITIES CORPORATION

BD
CRD#: 7569
BOCA RATON, FL
Past

February 27, 2019 - March 28, 2019

CHARLES SCHWAB & CO., INC.

BD
CRD#: 5393
Orlando, FL
Past

June 26, 2015 - February 7, 2017

MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED

RIA
CRD#: 7691
JACKSONVILLE, FL
Past

May 13, 2015 - February 7, 2017

MERRILL LYNCH, PIERCE, FENNER & SMITH INCORPORATED

BD
CRD#: 7691
JACKSONVILLE, FL
Past

August 8, 2012 - April 22, 2015

NATIONAL FINANCIAL SERVICES LLC

BD
CRD#: 13041
SMITHFIELD, RI
Past

May 1, 2010 - December 15, 2010

COLUMBIA MANAGEMENT INVESTMENT ADVISERS, LLC

RIA
CRD#: 108257
MINNEAPOLIS, MN
Past

May 1, 2010 - December 15, 2010

COLUMBIA MANAGEMENT INVESTMENT DISTRIBUTORS, INC.

BD
CRD#: 840
BOSTON, MA
Past

December 10, 2009 - May 1, 2010

BOFA ADVISORS, LLC

RIA
CRD#: 107900
BOSTON, MA
Past

December 10, 2009 - May 1, 2010

BOFA DISTRIBUTORS, INC.

BD
CRD#: 30683
BOSTON, MA
Past

March 6, 2009 - November 20, 2009

SECURIAN FINANCIAL SERVICES, INC.

BD
CRD#: 15296
WARWICK, RI
Past

February 26, 2008 - June 2, 2008

BANC OF AMERICA INVESTMENT SERVICES, INC.

BD
CRD#: 16361
LINCOLN, RI
Past

March 23, 2007 - December 20, 2007

CITIGROUP GLOBAL MARKETS INC.

BD
CRD#: 7059
PROVIDENCE, RI
Past

May 16, 2005 - March 28, 2007

CITICORP INVESTMENT SERVICES

BD
CRD#: 23988
PARK RIDGE, IL

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
California
(11/24/2025)
RR
Florida
(11/24/2025)

Exams

State Security Law Exam
RR
IAR
Series 66
Date: 5/18/2019
Uniform Combined State Law Examination
State Security Law Exam
RR
Series 63
Date: 3/11/2019
Uniform Securities Agent State Law Examination
General Industry/Product Exam
RR
Series 7TO
Date: 11/21/2025
General Securities Representative Examination
General Industry/Product Exam
RR
Series 6TO
Date: 11/21/2025
Investment Company Products/Variable Contracts Representative Examination
General Industry/Product Exam
RR
SIE
Date: 2/7/2017
Securities Industry Essentials Examination
General Industry/Product Exam
RR
Series 7
Date: 11/6/2007
General Securities Representative Examination
General Industry/Product Exam
RR
Series 6
Date: 5/14/2005
Investment Company Products/Variable Contracts Representative Examination
Principal/Supervisory Exam
RR
Series 24
Date: 11/21/2025
General Securities Principal Examination
SRO Registrations
RR
FINRA

Current Firm

GS
GT SECURITIES, INC.
GROWTHINK SECURITIES, INC. | GT SECURITIES, INC. | GROWTHINK, INC.

CRD#: 116012 / SEC#: , 8-53527

BD
Broker-Dealer Firm Regulated by FINRA (Los Angeles district office)
PREMIUM
Stay ahead of every change that matters. Proactive intelligence on your advisors, before issues escalate.
Biweekly Pulse, AutomaticallyScheduled alerts keep you informed without lifting a finger.
Catch Firm Red Flags SoonerCatch leadership changes and disclosures early, before issues escalate.
Trends, Not Just SnapshotsMonitor firm stability metrics like AUM and advisor ratios over time.

Contact information

Main Address
12130 Millennium Dr Suite 300, Los Angeles, CA 90094
Mailing Address
12130 Millennium Dr, Los Angeles, CA 90094
Phone number
(310) 846-5004
Established
California since 12/06/2001
Firm type
Corporation
Fiscal year end
December
Firm Size
Medium
# of Employees

FINRA licenses (51 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#
GROWTHINK, INC.PARENT CORPORATION
LAVINSKY, DAVID KENNETHMANAGING DIRECTOR4455040
TURO, JAMES STEVENMANAGING DIRECTOR & CHIEF COMPLIANCE OFFICER2083402

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

GT SECURITIES, INC.

CRD#: 116012Los Angeles, CA 90094

TRUST BUT VERIFY

Monitor Diana Owusu

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

Similar Advisors

Jon Derek Neuhaus
Jon NeuhausAdvisorCheck Check Mark
MORGAN STANLEY
IAR
RR
El Segundo, CA
Danielle Purcell Barrios
Danielle BarriosAdvisorCheck Check Mark
MORGAN STANLEY
IAR
RR
Beverly Hills, CA
Kenneth Hickman
Kenneth HickmanAdvisorCheck Check Mark
AMERIPRISE FINANCIAL SERVICES, LLC
IAR
RR
Brea, CA
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.