General Investing >> Money Manager Interviews >> October 19, 2026
Nick Tannura is the Chief Investment Officer and lead Portfolio Manager of GSI Capital Advisors, where he is responsible for leading the research and investment efforts of the firm. He serves as a Portfolio Manager of the ALPS Active REIT ETF (REIT). Previously, Mr. Tannura was the Founder and Portfolio Manager of Silverpath Capital Management, a long/short equity hedge fund focused on real asset securities. His experience also includes the ownership, growth and management of a $7 billion investment management business that was acquired by Brookfield in 2007. Mr. Tannura was responsible for the equities investment business of Brookfield Investment Management until his departure at the end of 2011. He received his MBA in international finance from the University of Chicago and his Bachelor of Business Administration from Loyola University. Profile

Karl Zeller is the Senior Investment Specialist at SS&C ALPS Advisors, responsible for developing and communicating the investment approach, insights and positioning of solutions across the firm to clients and prospects. Mr. Zeller collaborates with the research, portfolio management and distribution teams in the creation and implementation of the firm’s strategy, messaging and content. He has more than two decades of investment management experience. Throughout his career, he has established, enhanced and supported relationships with financial intermediaries, institutional investors and distribution partners across a variety of investment strategies, including alternative investments, real assets and long-only. Mr. Zeller joined SS&C ALPS Advisors in 2021 from Wilmington Trust, where he was the Senior Business Development Officer leading distribution of investment management capabilities to financial intermediaries. Prior to that, he held roles at CenterSquare Investment Management, Turner Investments, Nuveen Rittenhouse Financial, and Legg Mason. He earned a B.A. in History from the University of Virginia. Profile
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TWST: If you would, briefly introduce both of your firms. What would be helpful for readers to know about your capabilities and general approach or