Shares of Comerica of Dallas have now returned 13% this year, following a 20% return during 2012. The shares trade for just above tangible book value, according to Thomson Reuters Bank Insight, and for 12.3 times the consensus 2014 earnings estimate of $2.79 a share, among analysts polled by Thomson Reuters. The consensus 2013 EPS estimate is $2.76. Based on a quarterly payout of 17 cents, the shares have a dividend yield of 1.98%. A major concern for Comerica's investors coming out of fourth-quarter earnings season was the narrowing of the company's net interest margin (NIM), which is the spread between the average yield on loans and investments and the average cost for deposits and borrowings. The company's fourth-quarter NIM was 2.87%, declining from 2.96% the previous quarter, and 3.19% a year earlier. Loan growth was insufficient to offset the narrowing margin, as fourth-quarter net interest income declined to $424 million from $427 million in the third quarter and $444 million in the fourth quarter of 2011.