Previously, he was CEO of DIFX (now called NASDAQ Dubai) and was a member of the DIFX board. Singer filled the position vacated by Per E. Larsson, who accepted another senior position in the region. Singer was appointed DIFX CEO effective July 1, 2008. 
Singer joined the DIFX from NASDAQ OMX where he was senior vice president and head of international, responsible for NASDAQ’s global business development with a primary role of managing international relationships with companies outside of the Americas.
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