Fortune 500 rank: 236
2010 loss: $1.0 billion
This Sandy Springs, Ga.-based credit card processor faced huge losses as it struggled to pay off debt from its 2007 leveraged buyout.
The deal with Kohlberg Kravis Roberts left the company plagued with $24 billion in debt. First Data has attributed its losses partly to high interest payments, which totaled $1.8 billion in 2010 and exceeded the company's operating profit of $516.7 million.
First Data has restructured a portion of its debt in an effort to bring down costs, but it's still a long way from paying off loans that financed its buyout.
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Last updated May 05 2011: 3:06 PM ET