LIMA — S&P Global Market Intelligence recently released its ranking of 2017’s 50 best-performing credit unions.

Superior Credit Union, based in Lima, was named the No. 4 Best-Performing Credit Union in the U.S. No other credit unions in the top 10 had assets of less than $1 billion, and only one other Ohio credit union was ranked in the top 50. Superior’s asset size grew from $663 million to $820 million in 2017.

S&P Global Market Intelligence ranked the nation’s credit unions using five core financial performance metrics: member growth, market growth, operating expense as a percentage of operating revenue, net charge-off as a percentage of average loans and delinquent loans as a percentage of total loans. To be eligible for the ranking, a credit union had to report more than $500 million in total assets and a net worth ratio of at least 7.0 percent as of December 31, 2017. Based on these criteria, 538 credit unions qualified for the ranking.