CreditAccess Grameen reported a four-fold surge in second quarter net profit at Rs 502 crore as compared with Rs 126 crore, backed by rise in earnings and a drop in expenses including credit cost.The country's largest non-banking financial company-microfinance institution (NBFC-MFI) revised its return on assets guidance upwards to 5.2-5.8% from an earlier projection of 4.0-4.8% and return on equity guidance to 21–24% from 16-20%.Its total income jumped 26% at Rs 1905 crore for the quarter from Rs 1509 crore in the year-ago period.