UBS has appointed Jeffrey Mayer as joint global head of the fixed income, currencies and commodities (FICC) business. Mayer will work with fellow joint global FICC head Carsten Kengeter, who is based in London. The pair are responsible for all fixed income products, including structured products. Mayer will be based in New York and Stamford and report to Jerker Johansson, chairman and chief executive of UBS’s investment bank. Mayer will also join the executive committee at the investment bank an