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As a privately owned, fee-only financial advisor, we serve our clients as a fiduciary, always placing their interests first. We develop a deep and personal understanding of our clients, which allows us to be very proactive and responsive to their unique needs. We help our clients understand, organize, and manage their often complex financial situations. Our recommendations are independent, objective, and based solely on what is best for the client.

We demonstrate our fiduciary commitment to our clients by being a member in the National Association of Personal Financial Advisors (NAPFA), a national fee-only organization, and by adopting and endorsing the fiduciary practices recommended by the Institute for the Fiduciary Standard.

Our values

At Horizon Wealth Advisors, we truly believe that if your values are clear, your decisions are easier. Since we opened our doors in 1999, we have placed great importance on our core values, which follow:

We always do what’s right for our clients. We follow a fiduciary standard of care and service.


We give proper attention to detail and adhere to processes designed to provide the best possible advice and service.


We put our clients first. We try to do the big and small things well so that clients receive timely and responsive service.


We are committed to learning and staying current on all of the various areas that impact our clients and our advice.


We are advocates for our clients. By offering pro-active advice we help clients consider all options to ensure they meet their established goals.

Our Team

The principals of Horizon Wealth Advisors have many years of experience serving clients together. They have been assisting Houston’s high net worth with financial planning since 1985, through partner CPA firm Maddox, Thomson & Associates, P.C.

We work as a team at Horizon. Every person on our team plays a critical role in the execution and delivery of our unique wealth management process. We are experienced and committed to providing our clients with excellent advice and service.

Larry Maddox, CFP®, CPA

Partner, President

Larry’s professional career began at Peat Marwick Mitchell & Co. followed by Deloitte & Touche.  In 1981, Larry formed his own CPA firm and in 1985, Joe Thomson joined him to create Maddox Thomson & Associates, P.C., which continues to assist clients with  compliance and advice on personal and business income tax matters. 

Larry founded Horizon Wealth Advisors in Houston, Texas in 1999 with fellow business partner Joe Thomson.  Horizon was founded as a way to extend our advice and counsel beyond the tax business.  Since then, as Partner and President of Horizon Wealth Advisors, Larry has worked with clients in all aspects of wealth management.  His involvement includes helping clients develop effective strategies to achieve their personal goals and objectives. Along with the team at Horizon, he collaborates with clients as well as with external advisors to provide comprehensive wealth management services.

Larry attended the University of Texas (UT) at Austin where he received a Bachelor of Arts in Economics and an MBA with a concentration in finance and accounting. Larry is a CPA, a CERTIFIED FINANCIAL PLANNER™ (CFP®), and a registered member of the National Association of Personal Financial Planners (NAPFA). Larry is also a member of the Financial Planning Association (FPA) and a founding member of a national group of financial advisors who work together to share ideas about how best to serve their clients and manage their practices.

Outside of the office, Larry is involved with several foundations and through these is able to support multiple local charities, something he is very passionate about. In his free time, Larry enjoys traveling with his high-school sweetheart (to whom he has been married for over 40 years) and spending time with his daughter and first grandchild.  He also enjoys birdwatching, hitting the golf links, and cooking meals to complement his wine collection.

Joe Thomson, CPA

Partner, Vice President

Joe Thomson co-founded Horizon Wealth Advisors in 1999 in Houston, TX with his business partner, Larry Maddox. Joe’s primary focus at both Maddox, Thomson & Associates and Horizon Wealth Advisors is client relationships, consulting, and income and estate tax planning.

Joe Thomson joined Larry Maddox in 1985, and together they started the accounting firm of Maddox Thomson & Associates, P.C. Joe began his professional career in 1978 at Peat, Marwick, Mitchell & Co. where he provided tax compliance and consulting services for various individuals and corporations.

Joe Thomson attended the University of Mississippi (Ole Miss), graduating cum laude with a Bachelor of Business Administration with a major in Accountancy, and a Juris Doctor.  Joe is a CPA and an associate member of the National Association of Personal Financial Planners (NAPFA).

Owen Murray, CFA

Partner, Director of Investments

Owen Murray is principally involved in investment research and portfolio construction. Owen spends much of his time analyzing and managing Horizon Wealth Advisors’ clients’ investment portfolios. In addition, he is a watchful observer of market events and economic developments. As a core member of the wealth management team, Owen is often a participant in client meetings. Owen Murray joined Horizon Wealth Advisors in Houston, Texas in 2005.

Owen began his investment career with Beutel, Goodman Capital Management where he served as a Portfolio Analyst specializing in tax-sensitive portfolio management. He then joined Roxbury Capital Management as an Assistant Portfolio Manager where his principal duties included the management of individual client accounts and research support for the firm’s Core Equity Income portfolio.

Owen Murray attended the University of Southern California (USC), where he earned a Bachelor of Science in Business Administration with an emphasis in Finance and Marketing. He is a Chartered Financial Analyst (CFA) charterholder and is a member of the CFA Institute and the CFA Society of Houston.

Colin Lee, CFP®

Financial Planner

Colin Lee is a Certified Financial Planner ™. He joined Horizon in 2017 and is responsible for supporting the financial planning aspects of the wealth management process.  In this role, he works closely with clients and their external advisors to gather and summarize financial information and collaborates with Horizon colleagues to analyze and develop client recommendations and solutions.  Prior to joining Horizon, Colin was a financial advisor in San Antonio and the Texas Hill Country.  Colin graduated from Texas A&M University where he earned a BBA in Finance.

Jackie Thomas

Client Specialist

Jackie joined Horizon Wealth Advisors in 2018 and performs multiple operational functions while supporting members of the wealth management team.  In addition, Jackie maintains regular contact with Horizon Wealth Advisors’ clients to assist with administrative needs, such as deposits and disbursements from client accounts.

Jackie graduated from Texas A&M University with a Bachelor of Science in Business. Following graduation, she worked as an analyst for a payment processing company. Jackie was born and raised in Houston, Texas and enjoys traveling and spending time with family.

Cathy Haymes

Compliance Liaison

Cathy joined Horizon Wealth Advisors in 2002. For the first part of her career with Horizon Wealth Advisors, she served as the client service administrator, helping clients with the administration of their accounts at either Schwab or Fidelity.  She was also an integral part of the organization’s operations, portfolio management and other client service matters.  Cathy is currently responsible for ensuring and maintaining SEC compliance on behalf of the company.


At Horizon we put the needs of our clients first and build lasting, long-term relationships. As a boutique wealth management firm, our team members enjoy a collaborative approach on many issues while also maintaining autonomy over their own specific responsibilities.  Everyone on our team plays an important role and is expected to uphold the highest ethical and professional standards.

Horizon Wealth Advisors is always seeking talented financial professionals who have a keen interest in advocating for their clients. If you are interested in employment opportunities at Horizon Wealth Advisors, please submit your resume and any additional documents in one PDF file to

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Have a question but aren’t sure who or how to ask? Drop us a line and we’ll find the answers. Our recommendations are independent, objective, and based solely on what is best for you.

What it means to be a “fiduciary”

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