Dr. Ruben Shiffman is a Canadian entrepreneur and founder of Greenland Resources Inc. Among others, he Co-Founded and was Executive Chairman of the Toronto Stock Exchange listed mining company Calvista Gold, a unique highly socially responsible mining project successfully sold, now owned by Mubadala. In Toronto, Canada, was Managing Director of emerging markets trading at Scotia Capital and VP of trading at TD Securities. Was a member of the CPSS at the BIS in Basle, Switzerland. Ruben holds a BBA, MBA and a PhD in Finance and conducted Doctoral studies at the University of Toronto, Rotman School of Management.