About Cornerstone Group
At Cornerstone Group, our mission is to provide clear, thoughtful financial guidance rooted in integrity, transparency, and genuine care. We partner with clients to understand what matters most, deliver comprehensive financial planning with an objective, guidancefirst approach to help them make confident, informed decisions that support the life they want to live—today and in the future.
Meet Our Team
Thrivent - Andover

Joe Stepanek
ChFC®, FIC
Joe is a Wealth Advisor working in our Andover office. Joe has more than 25 years of experience helping clients with their financial goals and became a member of the Thrivent Hall of Fame in 2016.
Hall of Fame represents long-term commitment to our organization with consistent, successful performance. Financial Professionals qualify for Hall of Fame by achieving at least 20 years of service and by meeting performance goals.
- Title
Wealth Advisor
- State(s) Licensed
- AZ , FL , IA , MI , MN , WI
- Location
Andover, MN
- Website
- https://connect.thrivent.com/joe-stepanek
- joe.stepanek@thrivent.com
- Phone
- 763-276-9373

Leif Erickson
RICP®, BFA™, CEPA
Leif is passionate about helping clients manage their finances through the different seasons of their lives. He focuses on retirement, estate and tax planning strategies for individuals, business owners, and their families.
His certifications as a Certified Exit Planning Advisor®, a Retirement Income Certified Professional® and a Behavioral Financial Advisor™ help him advise his clients on virtually any financial issue.
Leif is currently serving as an elected member of the Forest Lake City Council (2023 - present) and is among a select group, with only 13% of Twin Cities Wealth Advisors earning the esteemed Five Star Award, which he has received for five consecutive years. Professionals who receive this award must possess strong industry credentials and are evaluated based on the quality of their current practices. Criteria for the award include industry experience, the number of households serviced, client assets, client retention rates, education, and professional designation. Additional information can be found here.
Along with his wife, Chelsea, Leif enjoys traveling, motorcycling, and quiet evenings on Forest Lake with family or friends.
- Title
Financial Advisor
- State(s) Licensed
- AZ , CA Insurance Lic. #4282837 , CO , IA , MN , TN , WI
- Location
Forest Lake, MN
- Website
- https://connect.thrivent.com/leif-erickson
- leif.erickson@thrivent.com
- Phone
- 651-238-3030

Luke Turnquist
Luke is a Financial Producer with the Cornerstone Group of Thrivent. He specializes in comprehensive retirement planning that integrates investment strategies, tax efficiency, and insurance planning. He helps clients in making informed financial decisions by developing clear, personalized strategies aligned with their goals and priorities.
Since beginning his career in 2021, Luke has been known for simplifying complex financial concepts and clearly explaining how each recommendation fits into a client’s overall financial plan. He is Series 7, 63, and 65 licensed and holds Minnesota Life, Health, and Annuity Insurance licenses.
Outside of work, Luke enjoys spending time outdoors with his fiancée, family, friends, and their dog, whether on the lake, fishing, playing pickleball, or cheering on Minnesota sports teams.
- Title
Financial Producer I
- State(s) Licensed
- MN , WI
- Website
- https://connect.thrivent.com/luke-turnquist
- luke.turnquist@thrivent.com
- Phone
- 763-202-1688

Sophey Stepanek
Sophey is our Client Relationship Manager as well as being fully licensed. We're grateful to have her help us manage all the details!
She graduated from the University of Minnesota.
- Title
Licensed Office Professional
- Location
Andover & Forest Lake

Robert Jackson
FIC
- Title
Associate
- State(s) Licensed
- MN
- Website
- https://connect.thrivent.com/robert-jackson
- robert.jackson@thrivent.com
- Phone
- 763-259-8515