John Aylward - Founder, Chief Investment Officer

Jonathan Williamson

Partner, European High Yield

Jonathan Williamson is a Partner and Portfolio Manager on the European High Yield team at Sona Asset Management, with 12 years of experience across credit and investment markets.

Jonathan works alongside John Aylward managing Sona’s European High Yield portfolio, with direct responsibility for trade execution and portfolio risk. He joined Sona in September 2016 at the firm’s inception and was made Partner in January 2025.

Jonathan began his career at Highbridge Capital and holds a BA in History from the University of Sheffield.