InvestmentsTop Global NewsMarketsReal Estate Investor Ackman opposes United Technologies’ aerospace merger with Raytheon: source By financialnews_rlv83x - June 11, 2019 0 242 William Ackman’s activist hedge fund Pershing Square Capital Management LP is opposed to United Technologies Corp’s US$120 billion aerospace merger with defense contractor Raytheon Co, a person familiar with the matter said on Tuesday.