 NEW YORK--BUSINESS WIRE--Ambac Financial Group, Inc. NYSE: AMBC, a financial services holding company, today announced that it will release second quarter 2021 results on August 5, 2021 following the close of the market. Conference Call On August 5, 2021 at 8:30am ET, Claude LeBlanc, President and Chief Executive Officer, and David Trick, Executive Vice President and Chief Financial Officer, will discuss second quarter 2021 results during a live conference call. A live audio webcast of th 