Live feed18:36:00·1467dPRReleasevia Quantisnow+1Novanta Set to Join S&P MidCap 400; Six Flags Entertainment to Join S&P SmallCap 600ByQuantisnow·Wall Street's wire, on your screen.NOVT· Novanta Inc.NTUS· Natus Medical IncorporatedSIX· Six Flags Entertainment Corporation NewSPGI· S&P Global Inc.MiscellaneousHealth CareConsumer Discretionary