Altair Asset Management (Altair) has apppointed Tim Riordan - and colleague Alvin Chan - as co-head of research for the investment firm. Riordan will continue to be co-portfolio manager of Altair's funds, the Altair Advantage Fund and the Altair Income Fund. He will also continue to serve on Altair's investment committee along with Alvin Chan, Gerard Minack, Stephen Roberts and executive chair, Philip Parker. Prior to joining Altair, Tim was a performance analyst at State Street Global Advisors.