Fortune 500 rank: 269
2010 profit: $1.8 billion
Despite a dip in net income this year, eBay still earns a spot as one of the most profitable tech companies around. EBay's acquisition of PayPal back in 2002 continues to pay off. Payment volume was up 28% year over year to 94 million active accounts, and the company expects PayPal growth to continually outpace eBay Marketplace expansion through 2013.
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Last updated May 05 2011: 2:53 PM ET