Three of Australia's big four banks have had their prized AA credit ratings downgraded by one notch because of their partial reliance on wholesale funding markets.
							24/02/2012 - 15:33
						
					CBA, Westpac, NAB downgraded by Fitch
								24/02/2012 - 15:33
							
						
 
             
										 
             
             
            