Great Rivers Investments, LLC is a team of highly skilled professionals that work for you to cover all aspects of your financial portfolio, and insurance, to maximize profitability and minimize tax consequences. Also, it is our fiduciary duty to act in the best interest of our clients at all times.


Marvin Thomson, CFP® - President/CEO

Certified Financial Planner™

Marvin has over 27 years of experience, showcasing a wide variety of responsibilities and knowledge. After graduating from Western Illinois University in 1994, he went to work for Horace Mann Insurance company as a multi-line insurance agent and registered representative in the Chicago western suburbs. After five years of working as an agent, he was promoted to manager of the Northern Illinois Agency, and was responsible for the sales goals, development, and mentoring of agents in the designated territory.

Marvin moved back to his hometown of Burlington, Iowa and joined Krantz Investments, in February of 2002. Krantz was later acquired by Two Rivers Financial Group. He worked as a registered representative, and the brokerage department manager for Two Rivers Bank & Trust until 2020. 

In 2021, Marvin started Great Rivers Investments, LLC. 

Marvin graduated with an associates degree from Southeastern Community College in 1992, and graduated from Western Illinois University with a Bachelor of Business degree. He has earned the following securities licenses: 

  • Series 6 (Investment Company and Variable Contracts Representative)
  • Series 7 (General Securities Representative)
  • Series 24 (General Securities Principal)
  • Series 51 (Municipal Fund Securities Limited Principal)
  • Series 65 (Uniform Registered Investment Advisor Law)
  • Insurance Sales (multiple states)

Marvin earned his Certified Financial Planner (CFP®) designation in February, 2010. The CFP® designation is the recognized standard of excellence for competent and ethical personal financial planning. 

When Marvin is not developing financial and investment solutions for his clients, he is farming on his family farm, where he raises row crops and cattle. He is an avid Chicago Cubs and Bears fan, enjoys golfing, deer hunting and fishing. 

Marvin serves on the Burlington High School Booster Club Board as the parent representative. In the past he worked with local boy scout troops, helping the scouts earn merit badges, served six years on the Notre Dame Foundation Board, coached youth football teams through both the local YMCA and YSF programs, coached t-ball teams, and was a member of the local Rotary Club. 

Legal Disclosure

Securities and Investment Advisory Services offered through Brokers International Financial Services, LLC. Member SIPC. Brokers International Financial Services, LLC is not an affiliated company. Great River Investments, LLC does not offer legal or tax advice. Please consult the appropriate professional regarding your individual circumstance. This site is published for residents of the United States only. Representatives may only conduct business with residents of the states and jurisdictions in which they are properly registered. Therefore, a response to a request for information may be delayed until appropriate registration is obtained or exemption from registration is determined. Not all services referenced on this site are available in every state and through every advisor listed. For additional information, please contact Marvin Thomson at 319-576-2264 and mthomson@brokersifs.com

Check the background of this investment professional on FINRA's Brokercheck

2723 Mt. Pleasant Street, Suite B
Burlington, Iowa  52601

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