 NEW YORK--BUSINESS WIRE--Ambac Financial Group, Inc. NYSE: AMBC Ambac, a financial services holding company, today reported Net Income attributable to common stockholders of 17 million or 0.081 per diluted share and Adjusted Earnings2 of 41 million or 0.59 per diluted share for the quarter ended March 31, 2021. This compares to a Net Loss attributable to common stockholders of 14 million or 0.31 per diluted share and Adjusted Earnings of 4 million or 0.08 per diluted share i 