CIT Group's filing for bankruptcy protection is the fifth-largest in US history.
Here are the top 10 US bankruptcy filings, based on the companies' most recent annual report before filing for bankruptcy protection, according to BankruptcyData.com.

Lehman Brothers Holdings Inc

Company: Lehman Brothers Holdings Inc
Bankruptcy Date: September 15, 2008
Assets: $691.06 billion

Washington Mutual Inc

Company: Washington Mutual Inc
Bankruptcy Date: September 26, 2008
Assets: $327.91 billion

WorldCom Inc

Company: WorldCom Inc
Bankruptcy Date: July 21, 2002
Assets: $103.91 billion

General Motors Corporation

Company: General Motors Corporation
Bankruptcy Date: June 1, 2009
Assets: $91.05 billion-x
x denotes, GM listed $91.05 billion in assets in its annual report as of Dec. 31, 2008, but listed $82.29 billion in assets as of March 31, 2009, in its bankruptcy petition.

CIT

Company: CIT Group Inc
Bankruptcy Date: November 1, 2009
Assets: $71 billion

Enron Corporation

Company: Enron Corporation
Bankruptcy Date: December 2, 2001
Assets: $65.50 billion

Conseco Inc

Company: Conseco Inc
Bankruptcy Date: December 17, 2002
Assets: $61.39 billion

Chrysler LLC

Company: Chrysler LLC
Bankruptcy Date: April 30, 2009
Assets: $39.30 billion

Thornburg Mortgage Inc

Company: Thornburg Mortgage Inc
Bankruptcy Date: May 1, 2009
Assets: $36.52 billion

Pacific Gas and Electric Co

Company: Pacific Gas and Electric Co
Bankruptcy Date: April 6, 2001
Assets: $36.15 billion