ATLANTA & NEW YORK–(BUSINESS WIRE)–Intercontinental Exchange, Inc. (NYSE:ICE), a leading operator of global exchanges and clearing houses and provider of mortgage technology, data and listings services, today announced record volumes for fixed income portfolio trading during the fourth quarter of 2020. Over $1.9 billion in U.S.-based notional activity was executed in the fourth quarter of 2020, an increase of more than two times the volume of the previous quarter and the strongest period of a