Michael Saul Dell (born February 23, 1965) is an American business magnate, investor, philanthropist, and author. He is known as the founder and CEO of Dell Inc., one of the world’s leading sellers of personal computers (PCs). He was ranked the 41st richest person in the world on 2012 Forbes list of billionaires, with a net worth of US$15.9 billion as of March 2012.In 2011, his 243.35 million shares of Dell stock were worth $3.5 billion, giving him 12% ownership of the company. His remaining wealth of roughly $10 billion is invested in other companies and is managed by a firm whose name, MSD Capital, incorporates Dell's initials. On January 5, 2013 it was announced that Michael Dell had bid to take Dell Inc. private for $24.4 billion in the biggest leveraged buyout since the Great Recession.