West Bancorporation Inc. moved to the No. 13 spot on American Banker’s ranking of the top publicly traded banks and thrifts with average assets of less than $2 billion. The evaluation was based on 2015 performance and was based on a variety of factors, including return on average equity over a three-year period. The average return on equity over three  years for the West Des Moines-based parent of West Bank was 14.43 percent. Burlington-based Two Rivers Financial Group, parent of Two Rivers Bank & Trust, ranked No. 79 with average return on equity of 10.98 percent, and Ames National Corp. was No. 133 with average return on equity of 9.76 percent. American Banker evaluated 684 banks to find the top 200. West Bancorporation was ranked No. 19 last year, based on its performance in 2014.