SAN ANTONIO Standard & Poor?s has raised its long-term rating on Frost Bank to A+, making the Texas-based financial institution one of the highest-rated banks in the country.

S&P cited Frost?s "strong capital, excellent liquidity, consistent profitability, and solid credit performance relative to peers?" reinforced by the company?s "conservative strategy and solid market position in Texas."

The A+ rating is the highest ever received by Frost Bank and places it in an elite group of financial institutions with an A+ rating. S&P also raised its long-term issuer credit on Cullen/Frost Bankers, Inc. (NYSE: CFR), the holding company of Frost Bank, to "A" and affirmed its "A-1" short-term rating on Frost Bank with a stable outlook on both the holding company and the bank.

S&P attributed Frost?s "track record of stable, consistent earnings through the economic cycles" to "the company?s relationship-oriented strategy, which focuses on long-time customers in local markets."

Cullen/Frost Bankers, Inc. (NYSE: CFR) is a financial holding company, headquartered in San Antonio, with $19.5 billion in assets at September 30, 2011 and more than 115 financial centers throughout Texas. One of 24 U.S. banks included in the KBW Bank Index, Frost provides a wide range of banking, investments and insurance services to businesses and individuals in the Austin, Corpus Christi, Dallas, Fort Worth, Houston, Rio Grande Valley and San Antonio regions.