Rafael Zayas, CFA, is Senior Vice President, Head of Portfolio Management and Trading at Vident Investment Advisory, LLC since June 2020. Mr. Zayas became SVP, Head of Portfolio Management and Trading in June 2020. From 2017 to 2020, he was a Senior Portfolio Manager – International Equity at Vident and has over 15 years of experience that includes managing international equity portfolios, including in emerging and frontier markets. Prior to joining Vident, he was a Portfolio Manager – Direct Investments for seven years at Russell Investments, a global asset manager, where he co-managed more than $4 billion in quantitative strategies across global markets, including the Russell Strategic Call Overwriting Fund, a mutual fund. Mr. Zayas also helped Russell Investments launch its sponsored ETF initiative and advised on index methodologies. Prior to joining Russell Investments, Mr. Zayas was a Portfolio Manager – Equity Indexing at Mellon Capital Management, where he managed assets for internationally listed global equity ETFs. Mr. Zayas graduated with a B.S. in Electrical Engineering from Cornell University and obtained a Certificate in Computational Finance and Risk Management from the University of Washington. He also attained the Chartered Financial Analyst designation in 2010.

Ryan Dofflemeyer, Senior Portfolio Manager of Vident. Mr. Dofflemeyer has over 16 years of trading and portfolio management experience across various asset classes including both ETFs and mutual funds. He is Senior Portfolio Manager for Vident, specializing in managing and trading of global equity and multi-asset portfolios. Prior to joining Vident, he was a Senior Portfolio Manager at ProShares for over $3 billion in ETF assets across global equities, commodities and volatility strategies. Before that, he was a Research Analyst at the Investment Company Institute in Washington DC. Mr. Dofflemeyer holds a BA from the University of Virginia and an MBA from the University of Maryland.

Steven McClurg, Chief Investment Officer of Valkyrie. Steven McClurg has considerable finance and fintech experience. Most recently, Mr. McClurg founded Theseus Capital, a blockchain-powered asset management platform, followed by joining blockchain-focused merchant bank, Galaxy Digital, where he continued as Managing Director, building their asset management and public funds businesses. Most relevant, Mr. McClurg was a Managing Director at Guggenheim Partners, where he was a portfolio manager and responsible for portfolio construction and strategy for fixed income and private equity. He also has experience in leadership roles in technology companies such as Electronic Arts. Mr. McClurg holds an MS and an MBA from Pepperdine University, where he has served as an adjunct professor.