Lawrence Ellison - $21.5 bil - Oracle - #1 in California, United States.

Brash software titan still at helm of Oracle Systems, database outfit he cofounded 30 years ago. Reshaping the industry with a massive shopping spree; spent $19 billion buying 21 software companies in past 3 years. Biggest acquisitions: PeopleSoft for $11 billion, Siebel Systems for $5.9 billion. Deals added $4.6 billion to company’s annual revenue, 18,000 to employee count. Combination makes Oracle, already strong in database management, a big player in business applications like accounting and personnel. Now stitching it all together into software suite Fusion for release by 2008. Predicts earnings will grow 20% a year for the rest of the decade. Chicago native studied physics at U of Chicago; didn’t graduate. Started Oracle in 1977. Took public in 1986, a day before Microsoft. Companies have been fiercely competitive ever since. Spends lots of time on distractions: tweaking his 40-acre Japanese-style estate, cruising on his 453-foot yacht, Rising Sun. Plans to sail in 2007 America’s Cup in Spain.

“Money is just a method of keeping score now.”