Online banking pioneer Axos Financial (NYSE: AX) did better than expected in its most recent quarter and says credit quality remains strong. Axos, which was founded in 1999 as Bank of Internet and was one of the first online banks, earned $1.38 per share in its fiscal second quarter, well ahead of the $1.22 per share analysts had expected. Net interest margin, the difference between the rate that Axos is paying out to depositors and charging borrowers, was 4.49% for the quarter, up from 4.1% a year ago.