Renaissance Technologies, which employs dozens of math and physics doctorate-
According to Forbes, Robert Mercer earned, US$ 125 million in 2016, US$ 150 million in 2015, US$ 115 million in 2013, US$ 90 million in 2012 and US$ 125 million in 2011. He is one of the highest earning hedge fund managers. Mercer’s career started at IBM were he was working on a speech recognition program. In 1993 he joined Renaissance Technologies. When James Simons retired, Mercer took over as CEO.
Mercer Mercer was "the biggest single donor" in the 2016 U.S. presidential race, donating US$ 14 million to the 2016 presidential campaign of Ted Cruz. In total Mercer has donated more than US$ 35 million to political campaigns.
Robert Mercer has a net worth of more than US$ 500 million. In this article on Bloomberg his net worth is estimated to be near US$ 1 billion.
He is an active philanthropist, donating US$ 13.5 million in 2013 through his Mercer Family Foundation, which is run by his daughter Rebekah Mercer. The foundation has US$ 37 million in assets. The foundation has been giving donations to the National Youth Science Fund, the World Science Festival, the Oregon Institute of Science and Medicine (OISM), the Museum of Natural History in Manhattan, and the Home Depot Foundation.
Rebekah Mercer directs the Mercer Family Foundation and served on the Executive Committee of the transition team of United States President-
Robert and his wife Diana Mercer own a large house in Head of the Harbour, Long Island, New York. The house is named Owl’s Nest, and has an estimated value of more than US$ 18 million.