GAIN Capital to Participate in the Sandler O'Neill 2019 Global Exchange and Brokerage Conference PR Newswire BEDMINSTER, N.J., May 29, 2019 BEDMINSTER, N.J. , May 29, 2019 /PRNewswire/ -- GAIN Capital Holdings, Inc. ("the Company") (NYSE: GCAP), a leading global provider of online trading services, today announced that Glenn Stevens , CEO, is scheduled to speak at the Sandler O'Neill Global Exchange and Brokerage Conference at the Parker New York Hotel in New York City on Wednesday, June 5, 2019...