Mary Koury David Vaughan Investments

Mary E. Koury Administrative Client Services/Front Office Associate

Peoria, IL


Prior to joining DVI in 2020, I worked in a variety of fields from marketing and communications to government and military sales and logistics. As a student, I was a member of the Activities Council of Bradley University and a member of the Alpha Phi Omega Service Fraternity. I had the opportunity to do two study abroad trips, one being a Media Exploration trip to New York City and the other taking a marketing course in London, England.


Notary Public


Bachelor of Science in Communications with a minor in Social Media Marketing from Bradley University.

What are the values that drive you in your professional and personal life?

I have always been a team player and a people pleaser. The work I enjoy most and find most fulfilling is helping others. DVI is a very forward-thinking company – always working with our clients' best interests in mind. I have a personal background with DVI, so I know that oftentimes they are helping people during the toughest times of their lives, making things a little less hard on individuals who may have lost a family member or whatever the case may be.

What is your favorite thing about DVI?

Beyond the scope of my work and my wonderful coworkers, I love working right off the path from the hiking trails of Forest Park Nature Center. When the weather is nice, I will often take a walk during my lunch hour or bring a change of clothes so I can meet my husband for a hike after work. A unique benefit of working at DVI is the constant flow of turkey and deer that take over the back lawn. It's serene; I always enjoy coming to work.

Tell us one thing about you that might be surprising:

I married the same person twice but never divorced...COVID!

There’s a Team Behind Every DVI Team Member

DVI is not one person. Our clients come to understand that although they may interact with particular team members more than others, there is a multi-disciplinary team of professionals hard at work for them, collaborating each and every day on their behalf.

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Fiduciary from the Start

Our founder, David Vaughan, created DVI over 45 years ago with an instinctive fiduciary mindset. He wanted to help his neighbors and community members grow and protect the financial success they had achieved in their lives. By building trust, he built a business that has grown in size and services. Today, we carry David's legacy forward with more comprehensive offerings to serve the ever-changing needs of our clients in Central IL and Central FL.

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