1. Google

What It Does: Search. And everything.
IPO Date: August 18, 2004
Money raised: $1.67 Billion 

Back in 1998, before Google even added the "Inc." to its name, Andy Bechtolsheim, co-founder of Sun Microsystems, tossed Sergy and Larry $100,000 to keep the party going. Six years later, after turning down a $1 million buyout offer by Excite CEO George Bell, and a 1999 $25 million round of funding, Google decided to go public. First day of trading saw 19,605,052 shares being swapped for $85! The $1.67 billion Google raised gave the search company a market value of $23 billion, or roughly the same market value as General Motors at the time. The rest is history.