Duff & Phelps Credit Rating Co. upgraded the short-term credit ratings of Cullen/Frost Bankers' lead bank.

The rating of Frost National Bank of San Antonio is upgraded to Duff 1-minus from Duff 2, an indication of a company with strong liquidity and minor risk.

Limited Time Offer

Save $400 off your subscription. Special offer ends April 30, 2017.

14-Day Free Trial

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