At HSBC, he held a number of senior positions within the emerging markets group, including chief business strategist, global head of emerging markets debt and portfolio manager. Prior to its acquisition by HSBC in 2005, Marber was founding partner, senior portfolio manager and chief investment strategist for The Atlantic Advisors. He was also president of the emerging markets subsidiaries at Dresdner Kleinwort. 

Loomis Sayles manages some $12 billion of emerging markets assets as at 30 June 2013 and continues to grow its business in these areas. In the past months, the company added four key EM resources, including Bianca Taylor as EM senior sovereign analyst, Celeste Tay as Asia sovereign analyst, Li Ping Yeo as Asia senior credit analyst and Nada Oulidi as emerging markets senior bank analyst.

The term "emerging markets" refers to developing countries, of which many are from Asia, like China and India.