 ACMAT OTCMKTS:ACMTA and NMI NASDAQ:NMIH are both small-cap finance companies, but which is the better business? We will compare the two businesses based on the strength of their dividends, earnings, analyst recommendations, institutional ownership, valuation, risk and profitability. Profitability This table compares ACMAT and NMIs net margins, return on equity and return on assets. Net ... 