After Hours Gainers / Losers Top gainers, as of 5:15 p.m.: CNQ +19.4%. CHS +10.1%. BXE +9.5%. ELMD +7.6%. KEG +7.4%. Top losers, as of 5:15 p.m.: PIR -30.5%. GNW -16.8%. SSNI -15.0%. NOG -9.7%. IPHI -7.9%.