Ambac continues to soar; regional banks fall By: MarketWatch April 13, 2010 at 10:18 AM EDT Shares of Ambac Financial Group Inc. continued their rally into a third day, leading financial stocks Tuesday. Read More >> Related Stocks: Bank of America Commerce Bancshares FINANCIAL SEL Huntington Bancshares KeyCorp Legg Mason Regions Financial Standard & Poors 500 TCF Financial Corp