Janus Henderson has appointed two new equity bosses following the decision of current incumbent Graham Kitchen to leave the industry for the charity sector.
Maris, who was portfolio manager for the firm's global select, global alpha equity, overseas and European equity strategies, will now be responsible for US equity.
Crooke (pictured), head of global equity income at the company, will have responsibility over equities in the emerging and Asia Pacific regions.
Both are to join the Janus Henderson executive committee on a rotating basis every six months and will jointly report to Citywire A-rated Enrique Chang, global chief investment officer.
There will be no change to their portfolio management responsibilities and they will both remain lead portfolio managers on their respective funds.
Chang said: 'Promoting these two individuals from within the organisation is a testament to the firm’s strong investment talent and deep bench strength.
'Respectively, George and Alex bring more than 19 and 27 years of financial industry experience.
'We are highly confident that their long tenure and significant accomplishments will ensure a smooth transition and that they will have a positive impact on the broader Janus Henderson organisation in these expanded leadership roles.
'We want to thank Graham for his significant contributions to the firm, particularly for building such a strong equities team. We wish him much success in his future endeavours.'
Meanwhile, Julian McManus and Garth Yettick, U.S. research analysts and assistant portfolio managers, will be promoted to co-portfolio managers on the overseas and global select strategies.