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Liquidity flags

A letter or liquidity flag is used to obtain execution information.

It indicates how an ECN executed a trade and it helps in determining how the trader is billed for this trade at the end of the day/month:

  Flag   Value
  A   Added
  R   Removed
  Y   Added for EDGX Tape A / C, EDGA
  B   Added for EDGX Tape B
  N   Removed for EDGX Tape A / B / C, free for EDGA
  Z   Removed for EDGX & EDGA ($0.001 charged)
  Routed to an IOI destination (Tape A / B / C, ROUZ
  ExecBroker only)
  Q   Added (for some BATS executions)
  C   Conditionally added (for some BATS executions)
  X   Routed to External Venue (Tape A / B / C)
  D   Listed Route removing liquidity from NYSE DOT
  (Tape A)
  R   Listed Route Rerouting via NYSE DOT (Tape A)
  F   Listed Route adding liquidity to NYSE DOT (Tape A)
  E   Internal Match (Tape A / B / C, Add and Remove
  MMIDs are the same)
  O   Open Cross (billable) (Tape C)
  M   Open Cross (non-billable)
  C   Closing Cross (billable)
  L   Closing Cross (non-billable)
  H   Halt / IPO Cross (billable)
  For EDGA, execution added liquidity from Hidden
  order (Tape A / B / C)
  K   Halt / IPO Cross (non-billable)
  I   Route to ARCA, AMEX, or Regionals (Tape A / B),
  removed for EDGX
  
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