MBNA Corp.'s debt ratings are coming under fire as a result of its expansion plans.

In the past week, Moody's Investors Service and Standard & Poor's placed the credit card specialist under review for possible downgrade because of the company's plans to purchase PNC Bank Corp. credit card operations, including roughly $2.9 billion in credit card receivables.

Subscribe Now

Access to authoritative analysis and perspective and our data-driven report series.

14-Day Free Trial

No credit card required. Complete access to articles, breaking news and industry data.