Fitch downgraded long-term issuer default ratings of Barclays, Credit Suisse, Deutsche Bank and BNP Paribas by one notch as week the economic growth and market turbulences as well as skeptics European regulators have not taken enough procedures to resolve debt dilemma have put more pressure on the region's large lenders, especially those with anemic revenue growth.

Barclays and Credit Suisse had their rate cut to A from AA- and BNP Paribas and Deutsche Bank were slashed to A+ from AA-.