In this week's people roundup, we look at moves from Barclays, Premialab and Sirius Capital, as well as Nomura and Société Générale.

Barclays has announced the appointment of Alexander Altmann (pictured) as managing director and global head of equities tactical strategies, a newly created role. Altmann is based in New York, and reports to Ronnie Wexler , global head of equities distribution. In his new global role, Altmann will be responsible for capturing new opportunities by delivering thematic idea generation, which will drive and monetise actionable market content across the equities and broader global markets client b