profit margin for convenience stores Yu 'ebao, the world's largest money fund, took only four years to achieve the equivalent of 10 years of development, with a maximum annual yield approaching 7%. But in its rapid development, there have also been a big wave of backwater, the most severe, from March 2015 to September 2016, the yield was down from 4.4 percent to about 2.4 percent. In general, the banking sector is healthier. While some banks are struggling, a lot of lenders have witnessed improvements in operations. The following outstanding banks are chosen as determined by eight measures on financial health including net interest margin, return on average equity, nonperforming loans, and reserves being a number of NPLs.