Steven Anthony "Steve" Ballmer (born March 24, 1956) has been the chief executive officer of Microsoft Corporation since January 2000. As of 2011, his personal wealth is estimated at US$14.5 billion, ranking number 46 on the Forbes list of billionaires.
Ballmer was born in Detroit, Michigan to a Swiss-American father and a Jewish American mother. He grew up in Farmington Hills, Michigan. In 1973, he graduated from Detroit Country Day School, a private college preparatory school in Beverly Hills, Michigan, and now sits on its board of directors. In 1977, he graduated magna cum laude from Harvard University with a B.A. in mathematics and economics.