Bank bonds weaken after S&P downgrades By: MarketWatch June 17, 2009 at 13:27 PM EDT Banks had to pay higher yields on their debt after Standard & Poor's Ratings Services it lowered its ratings and revised its outlooks on 22 U.S. banks. Read More >> Related Stocks: BB&T Corp Bank of America Capital One Financial KeyCorp U.S. Bancorp Wells Fargo