Michael Rubens Bloomberg (born February 14, 1942) is an American businessman, politician, philanthropist, and author. He is the majority owner and co-founder of Bloomberg L.P.. He was the mayor of New York City from 2002 to 2013, and was a candidate in the 2020 Democratic presidential primaries.
Bloomberg grew up in Medford, Massachusetts and graduated from Johns Hopkins University and Harvard Business School. He began his career at the securities brokerage Salomon Brothers before forming his own company in 1981. That company, Bloomberg L.P., is a financial information, software and media firm that is known for its Bloomberg Terminal. Bloomberg spent the next twenty years as its chairman and CEO. In 2019, Forbes ranked him as the ninth-richest person in the world, with an estimated net worth of $55.5 billion. Since signing The Giving Pledge, Bloomberg has given away $8.2 billion.
Bloomberg was elected the 108th mayor of New York City. First elected in 2001, he held office for three consecutive terms, winning re-election in 2005 and in 2009. Pursuing socially liberal and fiscally moderate policies, Bloomberg developed a technocratic managerial style. After a brief stint as a full-time philanthropist, he re-assumed the position of CEO at Bloomberg L.P. by the end of 2014.
As mayor of New York, Bloomberg established public charter schools, rebuilt urban infrastructure, and supported gun control, public health initiatives, and environmental protections. He also led a rezoning of large areas of New York City, which facilitated massive and widespread new commercial and residential construction after the September 11 attacks. Bloomberg is considered to have had far-reaching influence on the politics, business sector, and culture of New York City during his three terms as mayor. He has also faced significant criticism for his expansion of the city's stop and frisk program.
In November 2019, Bloomberg officially launched his campaign for the Democratic nomination for president of the United States in the 2020 election. He ended his campaign in March 2020, after having won only 61 delegates. Bloomberg self-funded $935 million on the primary campaign, setting the record for the most expensive U.S. presidential primary campaign.
He is also known as Michael Rubens Bloomberg, Michael R. Bloomberg, Bloomberg, Michael, Bloomberg, Mike and Mike Bloomberg.