UPDATE 2-US bank Fifth Third to buy regional lender Comerica in $10.9 billion deal

(Adds deal terms in paragraph 3, context in paragraphs 5-6, CEO comment in paragraph 8) Oct 6 (Reuters) – U.S. bank Fifth Third on Monday agreed to buy regional lender Comerica in an all-stock deal valued at $10.9 billion, aiming to expand its presence in key growth markets. The deal will create a lender with combined assets of about $288 billion, making it the ninth-largest U.S. bank. Comerica shareholders will receive 1.8663 Fifth Third shares for each Comerica share, valuing the deal at $82.88 per share based on Fifth Third's closing price on October 3. Comerica shares jumped 12% before the bell, while Fifth Third fell 2.6%. A wave of consolidation is sweeping through the banking industry as lenders diversify revenue streams and prepare for lighter regulation under the Trump administrat