Michael Bloomberg - World's Most Powerful Billionaires 2010

Michael Rubens Bloomberg (born February 14, 1942) is the recent Mayor of New York City, and the 10th richest person in the United States, having net worth of US$18 billion in 2010. He is the founder and 88% owner of Bloomberg L.P., a financial news and information services media business. A lifelong Democrat before seeking elective office, Bloomberg switches his registration in 2001 and ran for