Fifth Third-Comerica deal wins more support amid lawsuit

Key insight: The recommendation is another signal in favor of Fifth Third closing its massive acquisition of Comerica.What's at stake: The combined company would be one of the largest banks in the country by assets, though the deal is one of the fastest to come together in 15 years.Supporting data: Both Fifth Third's and Comerica's stock prices have gone up since the deal was announced, a sign that investors are in favor of the transaction.Update: This story has been updated with additional information abou ...