Michael Rubens Bloomberg is an American businessman, politician, philanthropist, and author. He is the majority owner and co-founder of Bloomberg L.P., and was its CEO from 1981 to 2001 and again from 2014 to 2023. He served as the mayor of New York City for three terms from 2002 to 2013 and was a candidate for the 2020 Democratic nomination for president of the United States. In 2024, Bloomberg received the Presidential Medal of Freedom from President Joe Biden. He has served as chair of the Defense Innovation Board, an independent advisory board that provides recommendations on artificial intelligence, software, data and digital modernization to the United States Department of Defense, since June 2022.

Bloomberg L.P. is a privately held financial, software, data, and media company headquartered in Midtown Manhattan, New York City. It was co-founded by Michael Bloomberg in 1981, with Thomas Secunda, Duncan MacMillan, Charles Zegar, and a 12% ownership investment by Bank of America through their brokerage subsidiary Merrill Lynch.