US banks’ investment grew to 66% from 56% compared to previous fiscal and 60% in the third quarter of 2011, reported Businessweek citing Bloomberg.

Revenues of US banks, which include JPMorgan Chase & Company, Goldman Sachs Group, Morgan Stanley, Citigroup and Bank of America, rose from trading stocks, bonds and derivatives.

European investment banks are reducing risk-weighted assets and shutting units. Inline to this, Deutsche Bank AG has decreased its trading risk down to the lowest since 2003, while Zurich-based Credit Suisse Group AG took a charge of CHF469m ($512m) to cut assets and exit some fixed- income trading businesses.

European debt crisis has worried the investors about the safety of their funds, which took its toll by reducing the revenues of banks, such as Barclays Plc, Deutsche Bank, UBS AG and Credit Suisse, with 28% decline to $19.9bn in the fourth quarter of current fiscal compared to the same period a year ago.