ECN id's on Nasdaq Level 2 Screen

Discussion in 'Order Execution' started by evogel, Jun 4, 2004.

  1. evogel


    Hi! Can anybody post a table with explanation of ECN id's ?I just got that Island is now *cin instead of ISLD, but what does *pac, *nsd, *nbb, *bos and so on mean now ?

    Thanks in advance.

  2. Let me test my knowledge...

    NBB just means National Best Bid, NBO = national best offer

    CIN Stands for exchange, were ISLD apparently routes some/all orders.

    PAC would be the Pacific Exchange:

    BOS the Boston Exchange, etc:

    There are a few regional electronic exchanges that orders are routed to. Some level 2 displays show it as CINN, or ISLD/INET

    ACRA ECN is their own exchange:

    Archipelago Exchange Approved by SEC

    SAN FRANCISCO AND CHICAGO, October 25, 2001 - The Pacific Exchange (PCX) today received approval from the Securities and Exchange Commission (SEC) to launch the Archipelago Exchange (ArcaEx), the first totally open, fully electronic stock market for New York Stock Exchange, American Stock Exchange, and Nasdaq securities in the United States. Archipelago, a leading U.S.-based electronic communications network (ECN), will convert its technologically advanced equity trading system into ArcaEx, a regulated facility of the Pacific, and a replacement for the PCX's current floor-based equities marketplace.
  3. alanm


    You must have been looking at a (NYSE/AMEX-) listed stock, and your software is showing you the CQS display of the different regional exchanges.

    For listed stocks:

    INET (fka Island) displays their quotes through the CSX, aka CINN, *CIN.

    ARCA displays their quotes as PACX, aka *PCX.

    Boston Stock Exchange is BOSX, aka *BOS, BSX.

    Philly Stock Exchange is PHLX, aka *PHX.

    Seems like BRUT used to display through the Nasdaq ITS as NASD, aka *NSD, but I can't prove it at the moment (it's too late in the day).