Sir David Winton Harding (born August 1961) is a British billionaire businessman, and the founder and CEO of Winton Group. He had previously co-founded Man AHL (formerly Adam, Harding & Lueck). His approach favours quantitative investment strategies, using scientific research as the basis of trading decisions. With respect to scientific research, he has established a research programme into the physics of sustainability at Cambridge University's Cavendish Laboratory. Politically, Harding has served as the joint-treasurer of Britain Stronger in Europe and chairman of the BSIE finance committee.