Management Team

Osprey Funds is run by experts who have invested in crypto since 2013 and launched over 100 exchange-traded products. Members of the management team built their experience at firms including Barclays, Credit Suisse, Citi, Global X Funds, J.P. Morgan, PIMCO, and more.

Bill Birmingham, CFA

Chief Investment Officer

Bill is the Chief Investment Officer and Head of Research for Osprey Funds.  Bill has 20 years of investment experience performing fundamental research, risk management, and portfolio building at a number of hedge funds, notably Carlson Capital, Impala Asset Management, and Xylem Global Partners.

Bill is a CFA charterholder and has a B.A., cum laude, in Politics, Ethics, and Economics from the University Professors Program at Boston University.

He holds a J.D. and LL.M in Taxation from Boston University School of Law.

Jack Drogin

General Counsel, Chief Compliance Officer

Jack is General Counsel and Chief Compliance Officer, after serving as outside regulatory and trust counsel since 2018. His experience in over a decade at the SEC and two decades in private practice includes significant work in the structuring and listing of exchange-traded products, and the regulation of securities markets, broker-dealers and investment managers.

Jack has extensive experience advising clients on digital currency and blockchain legal and regulatory matters including, in particular, the application of the federal  securities laws and FINRA rules to initial coin offerings, trading of digital assets, and related clearing and custody issues.

Jack began his career in the Banking Department of Milbank Tweed Hadley & McCloy in 1989.  From 1991-2001, he served in the SEC’s Division of Market Regulation (now Trading & Markets), rising to the position of Assistant Director, Market Supervision.  From July 2001 until joining Osprey, he was in private practice at Washington, DC law firms, including Morgan Lewis, Schiff Hardin, and Murphy & McGonigle.

Jack received his JD from Harvard Law School in 1989 and his BA from the University of Pennsylvania in 1985.

Greg King, CFA

Founder and CEO

Greg founded Osprey Funds in 2018, combining his transformative financial product experience and interest in crypto. Greg is also the Founder & CEO of REX Shares (since 2015). Previously, he Co-founded VelocityShares (2009), which was acquired by Janus in 2014. Greg is an innovator in the field, launching over 100 ETPs including the first ETPs tracking VIX, broad-based commodities, and FANG stocks.

Greg has held key positions at Barclays, Credit Suisse, and Global X Funds. He earned an MBA from University of California, Davis and is a CFA charterholder. He has been a bitcoin investor since 2013 and enjoys spending time on his hobby farm in Redding, CT.

Robert Rokose

Chief Financial Officer

Bob joined Osprey in 2020, bringing 28 years of accounting and financial reporting experience to the company.

Previously, he served as CFO and Managing Director at PIMCO/Allianz Funds, CFO of U.S. Funds at JP Morgan Asset Management, and Assistant Comptroller of Lexington Global.

Bob earned an M.B.A. from University of Connecticut and is a CPA Charterholder. He is an avid skier and lives in Ramsey, New Jersey with his wife and two kids.

Advisory Board

Brian Estes

Brian is the Managing Partner & Chief Investment Officer at Off the Chain Capital, a firm focused on Graham/Dodd value investing in blockchain and digital assets.

Josh Brown

Joshua Brown is the CEO of Ritholtz Wealth Management, a New York City-based investment advisory firm. Josh is the author of the book Backstage Wall Street. Josh is also the founder of the popular blog The Reformed Broker.

Michael Komaransky

Michael is the founder of Grapefruit Trading, a crypto market maker firm. Prior, Michael served as Head of Trading at Cumberland, DRW’s digital-currency unit where he played a key role in building of the world’s leading liquidity providers in cryptoassets.

J. Parsons

J. Parsons has been a leader in the exchange traded product industry for over 20 years. Most recently, J. served as Global Head of Sales in the iShares business of Barclays Global Investors (BGI), where he played a key role in accelerating ETF distribution to financial advisors.