Radix Market Research is comprised of a dedicated team of skilled individuals who strive to provide our clients with the best marketing research services available. To speak to a member of our team, call 416-924-7273 or 1-800-276-4161.


President and CEO
Fergus Gamble Ext. 225  
A career marketing researcher, Fergus Gamble has been in the business for over 30 years. After a decade of client-based experience at Colgate Palmolive and General Foods, in 1989 Fergus co-founded Vantage Research Group. In 1994, he joined Vantage with Dadson Research to form DVResearch. Then, in 2006 Fergus merged DVR with LLS Market Research to form Radix.

Particular among his strengths is providing a strategic perspective and insight for the development of his clients’ business. A second generation marketing researcher (his father was MR Manager at P&G). Fergus became fascinated by the business as a teenager, and determined to make it his career. It remains his professional passion. As if to drive home the point, he married another marketing researcher (eventually his business partner) over 35 years ago. He has never been disappointed by either decision!

Fergus sees his CEO title as meaning Chief Enabling Officer with the primary responsibility of supporting the amazing talents of the Radix team and matching them to the needs of our clients.

Outside of his professional life Fergus has recently concluded 10 years service on the Board of Directors of the Toronto Philharmonia Orchestra to support his love of classical music and is a life-long cottager.





Director of Quantitative Techniques
John Trumpener Ext. 221  
John has been developing and practicing robust tools and technologies in market research for over 20 years. The hallmarks of his work are to bring clarity to his clients’ issues and problems, bringing fresh approaches to time-tested research methodologies to provide more insightful analysis and recommendations.

John is an expert in the application of multivariate statistical analysis to market research. He believes that these techniques are the best way to understand the complexities of consumer behaviour, and to clearly communicate the essential learning to clients without losing the nuances or getting bogged down in details. Working with the Radix team, John has developed many innovative research techniques, such as the wildly successful Brandscape Market Structure Study, and the TurfMAX Portfolio Optimization Tool. He is also a “consultant’s consultant,” to whom other market researchers often turn for advice on difficult problems.

When not working, John enjoys racing sailboats, cooking diverse cuisines, and playing classical piano.





Senior Research Consultant
Cathy Ollerhead Ext. 229  
An elementary and high school teacher in her previous work life, Cathy joined the Radix team in 1997 after completing her MBA at the Schulich School of Business at York University. In her role as Senior Research Consultant, Cathy is a key member of the client service team, with experience in a wide range of B2B and consumer packaged goods markets. Recently she has been focusing on food service research, in both the restaurant and supplier sides of the market.

A busy mom to two young boys, Cathy also actively participates in a variety of sports including soccer, hockey and skiing. When she can find the time, she also enjoys scrapbooking and cottage life.





Senior Research Consultant
Heidi Wilson Ext. 222  
With over 15 years of experience, Heidi focuses on finding actionable business solutions for clients. Her unique blend of marketing and research experience is rooted in robust research and analysis methods. Heidi is a tenacious and dedicated professional with a history of meeting client expectations. She has conducted projects in a wide range of areas, including customer satisfaction, product innovation, branding, and corporate image programs. Heidi has been called upon to provide strategic and brand direction for clients across Canada and the United States.

Prior to working as a supply-side market researcher, Heidi was a Director at Bell Sympatico where she received the Bell Ovation Award for business achievements. She has a Ph.D. in Social Sciences from the State University of New York.

When not in the office, Heidi can be found experimenting with new kitchen recipes and spending time with her young family in Collingwood.





Senior Technical Consultant
Sara Simmons Ext. 224  
A sharply skilled analyst, Sara has worked as part of the Radix team since 1992. She is instrumental in developing new tools for the Radix team, and has been a key player in creating the data structures for Brandscape and our TURF and conjoint simulators. Sara has a keen analytical sense and the mental rigor to deliver new insights for the projects she works on.

Prior to working in marketing research, Sara spent four years developing databases and exploring the world of retail geography at the Centre for the Study of Commercial Activity at Ryerson. She holds a B.Sc. in Computer Science and Physics from the University of Toronto.

Outside of the office Sara spends her time sailing, reading and writing.





Technical Specialist
Chris Lau Ext. 226  
Chris joined our team in 1997. He manages all creative aspects of client projects, from product photography and digital imaging to creating product mock-ups. Over the years, Chris has generated many innovative ways in which to execute traditional research methodology, thereby revitalizing and improving time-tested market research techniques. This not only results in more engaged respondents, leading to more reliable data, but the creativity he brings to the table both delights and satisfies our clients. Chris is also skilled at supporting data programming and analysis and reviewing surveys in multiple languages.

When he is not in the office, you can find Chris on the golf course or building scale models.





Technical Consultant
Nick Passakas Ext. 234  
The newest addition to the Radix team, Nick, comes fresh from university with a drive to push the limits of market research and bring new ideas to the company. An honours graduate from the University of Toronto majoring in physics, Nick's mathematical and analytical skills are second to none. Although he is new to the field, Nick is rapidly gaining familiarity with the essential marketing research analysis toolset, working to master SPSS by delivering cross-tabs, segmentation, data-reduction techniques, and TurfMAX analysis among others.

Nick is a skilled musician and has learned five instruments. He also enjoys spending time outdoors travelling, skiing, snowboarding, biking and golfing.