Log In


We have a fundamental, bedrock view that our people are everything. It's not surprising that since our firm's inception we have had a purposeful philosophy about our hiring and culture.

Our Leadership

  • James Egan Head of Alternative Lending
    James Egan is the Head of Alternative Lending at Stone Ridge. Prior to joining Stone Ridge, James was the Vice President of Research and Strategy at Evolution Capital Management. He started his career at Bridgewater Associates in the Research Department. James received his BSE from Princeton University in Electrical Engineering.
  • Dan Fleder Head of Product Development
    Dan Fleder is the Head of Product Development at Stone Ridge. Prior to joining Stone Ridge, Dan was the Chief of Staff of Operations at KCG. Previously, he was the Head of Risk Management at GETCO. Dan received his PhD in Operations Research and MS in Statistics from the University of Pennsylvania (Wharton) and BSE in Engineering from the University of Pennsylvania (Engineering School).
  • Paul Germain President
    Paul Germain is the President of Stone Ridge Asset Management.  Prior to joining Stone Ridge, Paul served as the Global Head of Prime Services at Credit Suisse.  Paul was previously a Partner at Goldman Sachs and Co-Head of the US Client Franchise in Prime Brokerage. Paul earned an MBA from Harvard Business School and BSE in Management from University of Pennsylvania (Wharton).
  • Alexander Nyren Head of Reinsurance
    Alexander Nyren is the Head of Reinsurance at Stone Ridge and is a portfolio manager on its registered and private reinsurance funds. In this role, he supervises origination, due diligence, and risk management related to all of Stone Ridge’s reinsurance investments. Prior to joining Stone Ridge in 2013, Alex was a Principal in the insurance practice of Oliver Wyman, where he worked with reinsurers, insurers and regulators. Previously, he structured catastrophe bond and quota share securities at Barclays Capital/Lehman Brothers. Alex earned an MPhil in Economics from the University of Cambridge on a Gates Scholarship and a BA in Applied Mathematics summa cum laude from Harvard University. He is a named inventor on a US patent related to trading natural disaster risk.
  • Jim Rothwell CAO and Head of Legal
    Jim Rothwell is the Chief Administrative Officer and the Head of Legal at Stone Ridge. Prior to joining Stone Ridge, Jim was a partner in the Securities and Equity Derivatives Group at Davis Polk & Wardwell LLP. Jim holds a JD from Harvard Law School and a BS in Biochemistry and Molecular Biology from Harvard University.
  • Mike Sapnar Head of Longtail Re
    Mike is the Head of Longtail Re and the Global Head of Insurance Solutions at NYDIG. Prior to joining Stone Ridge, Mike served as the President and CEO of Transatlantic Reinsurance for nearly 10 years and held various positions domestically and internationally during his 26-year tenure. He started his career at Continental Insurance. Mike has served as Chairman of the RAA and BRMA and as a Director of Pillar Capital Holdings. He is currently a Trustee for The William & Mary Foundation. Mike holds a BA in Economics from the College of William & Mary and earned an MBA in Finance from New York University.
  • Tomer Seifan CFO and Head of Structured Investments
    Tomer Seifan is the Chief Financial Officer and Head of Structured Investments at Stone Ridge. Prior to joining Stone Ridge, Tomer was the Head of Structuring and Solutions for Global Markets in the Americas at BNP Paribas. Previously, Tomer led a variety of structuring and structured product groups at both BNP Paribas and Bank of America. Tomer started his career in the Financial Institutions Group at Davis Polk & Wardwell. Tomer received his JD from Georgetown University and his BA from Yale University.
  • Ross Stevens Founder and CEO
    Ross Stevens founded Stone Ridge in 2012, and serves as Chief Executive Officer.  Ross founded the New York Digital Investment Group (NYDIG) in 2017, and serves as its Executive Chairman.  Ross started his career at Goldman Sachs after receiving his PhD in Finance and Statistics from the University of Chicago (Booth) and his BSE in Finance from the University of Pennsylvania (Wharton).  Ross founded and serves as the Advisory Board Chairman of the Stevens Center for Innovation in Finance at the University of Pennsylvania (Wharton).

Please correct the following error(s):

I am interested in:


{{ errors }}