CORRECTED-RPT-Ackman targets retail investors in ADP proxy contest
September 22, 2017 at 19:32 PM EDT
BOSTON, Sept 22 (Reuters) - Billionaire hedge fund manager William Ackman, whose firm has a 2 percent voting stake in Automatic Data Processing Inc, is turning up the heat in his proxy war for the human resources outsourcing company by targeting an often-ignored but influential group of people - retail investors.