The federal government went to great efforts to revive the banking sector in the United States since the credit crisis began, but a significant drop in the shares of U.S.

banks on Monday, suggests some U.S. banks did not put the mortgage bust that stands behind them.KBW Bank Index was down by 10.7% on Monday, the largest selling off much of the fall of 6.6% experienced by the broader S & P 500 stocks. As with other financial assets, however, there was a clear flight to quality even within the banking sector.

Shares of Bank of America rose 20% in trading Monday. And then drop down from AIG that it will sue the biggest bank in the country for more than 10 billion dollars of losses suffered as a result of mortgage securities and units of the Bank. Became Mike May, an analyst at another bank downgraded shares of U.S. securities. And decreased the stock of Citigroup, the nation’s third-largest bank, increased by 16.4%.

The regions of Finance, based in Birmingham,

Ala., and the stock tumbling by 13.5 percent on Monday, which undermine the steady progress of the CEO of a relatively new Grayson Hall has been achieved in turning around the bank’s troubled portfolio of commercial real estate. The just mentioned areas is stronger than expected profits in the second quarter in July, when he referred also to the measures of credit quality is improving. Announced in June it was exploring the possible sale of parts of Morgan Keegan sub that can potentially free up more than 1 billion dollars of physical capital and make the direct sale of the bank more possible.

Has rocked the debasement of the Standard & Poor’s credit rating of the United States in the long term clearly some in the banking sector in the United States. Morgan Stanley said on Monday that the lower credit rating of the United States could have a “material adverse effect” in the bank. But not all of the major banks so badly banged up on Monday.

Less risky banks looking, such as Well Fargo & Co.

saw, and reduced its share by 9% or so on Monday. Shares of JP Morgan Chase & Co., the nation’s second largest bank, which is one of the big banks is sound, also declined about 9%. That terrible day, in accordance with normal standards, but on Monday it’s like to show great strength.

Is still the banking sector is on the defensive. According to Bloomberg News that international banks are now ready to cut 101,000 jobs. A prominent investors who have bet a bouquet of striking down bank shares, the billionaire hedge fund manager David Tepper, reportedly sold only outside positions at Bank of America and Wells Fargo and dramatically reduced its stake in Citigroup.