Dan Loeb is a mathematician, publisher and genealogist. He is the publisher and founder of the Philadelphia Jewish Voice. His genealogical website includes about 30,000 individuals with certain branches going back to biblical times. After completing his doctorate in mathematics at MIT, Loeb moved to France where he taught mathematics and computer science at the University of Bordeaux. In 1996, he returned to the United States where he works in statistical arbitrage for Susquehanna International Group.