Corey Mack is a seasoned entrepreneur, investor, and educator who has built and grown multiple successful businesses. As President & CEO of Corymack LTD in Alton, Illinois, he oversees a diversified portfolio including auto sport, luxury goods, and environmental services companies. With a dual background in economics and corporate finance, Corey has spent more than two decades studying capital markets, simulating corporate operations, and developing systematic investment strategies.

His deep understanding of how businesses create-and sometimes destroy-value underpins his practical, step-by-step approach to teaching the stock market. In Stock Market Fundamentals: A Beginner's Guide, Corey distills complex concepts into clear, actionable lessons, empowering new investors to navigate volatility, analyze companies, and build portfolios with confidence. He lives in the St. Louis metro area with his family and speaks frequently at industry conferences and investor workshops.