More recently, Jonk worked for Triodos Investment Management on an interim basis, focussing on developing sustainable investment strategies for listed companies.Jonk succeeds Mark Burbach, who started as chief investment officer at Bahrain-based Osool Asset Management on 1 April. Burbach had been the chief investment officer of Blue Sky Group for eight years. Jack Jonk has been appointed chief investment officer at the €20.5bn asset manager and pensions provider Blue Sky Group.Together with chief operations officer Jos Keijzers, Jonk will make up the executive team at Blue Sky Group’s asset management arm, which is responsible for fiduciary asset management and client advice.He took up his role on 15 May.Before joining Blue Sky Jonk worked at Delta Lloyd Asset Management. Between 2007 and 2015 he was a member of the management team and head of equities. At different stages during this period he also led the institutional clients, strategy and alternatives teams. Toine van der Stee, Blue Sky Group director, said: “Jonk has extensive management and investment experience. We are convinced that he will be able to provide the highest elvel of advice to our existing and new clients”.Blue Sky Group is the fiduciary manager for KLM’s pension funds. Other clients include corporate pension schemes such as those for SNS REAAL and Total Nederland.