Ackman’s Pershing Square loses ADP proxy battle November 6, 2017 by quixnet Ackman’s Pershing Square loses ADP proxy battleReuters Bill Ackman Loses Another Boardroom BattleBloomberg Ackman Overwhelmingly Loses ADP Battle in Latest Blow to the Activist InvestorTheStreet.com Activist William Ackman Loses Bid for ADP Board Seats–4th UpdateFox Business Full coverage