Multiracial billionaires with significant black ancestry have been identified over the years. Saudi Arabian billionaire Mohammed Al Amoudi, of Hadhrami Yemeni and Ethiopian descent, has been on the Forbes billionaire list since 2002 and in 2012 had a net worth of $12.5 billion.[7] Michael Lee-Chin of Canada, who is Jamaican of Chinese and Black ancestry, was on the list from 2001 to 2010 but dropped off in 2011.[8] Isabel Dos Santos is of both Angolan and Russian ancestry. Alexander Karp, Co-Founder and CEO of Palantir Technologies has an African-American mother.[9]