TransUnion's owners are pursuing a possible sale that could fetch roughly $2 billion for the credit information firm, sources familiar with the matter said.

TransUnion, which is owned by private equity firm Madison Dearborn Partners and Chicago's Pritzker family, said in July it planned to raise up to $325 million in an initial public offering.

But the Chicago-based company may instead be sold as the IPO market has effectively been shut amid geopolitical and economic uncertainty.

TransUnion is being advised by Deutsche Bank and Bank of America on the sale, the sources said.

Bidders for the business, which competes with firms like Experian and Equifax , include private equity firms, the sources said.

The auction is at an advanced stage, but the process has been hit by problems in the financing markets, which have seen the availability of debt available to private equity firms shrink and the interest rates go up, the sources said.

Private equity-backed deal volume in the third quarter was down nearly 30 percent to $53.1 billion from the same period of last year, according to Thomson Reuters data through September 22.

Dual-track processes, where both an IPO and an outright sale are explored, are often adopted by private equity firms trying to realize their investments in companies.

TransUnion and Bank of America were not immediately available for comment. Deutsche Bank and Madison Dearborn declined to comment.

(Reporting by Paritosh Bansal in New York, editing by Matthew Lewis)

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