anchor.diff:  PXD,0
   PNC,0
   RL,0
  -PPG,4
  +PPG,3
   PPL,3
   PX,3
   PCLN,7
  
positive.code: NFLX,7
  NWL,0
  NFX,0
  NEM,6
  NWSA,0
  NWS,0
  NEE,0
  NLSN,6
  NKE,3
  NI,0
  NBL,0
  JWN,0
  
negative.code: DPS,1
  DTE,0
  DD,1
  DUK,0
  DXC,1
  ETFC,4
  EMN,5
  ETN,0
  EBAY,9
  ECL,0
  EIX,1
  EW,0
  