IB Bid/Ask prices

Discussion in 'Retail Brokers' started by echo33029, Oct 3, 2001.

  1. I've recently started using IB and I've noticed that the bid/ask prices quoted in the pre-open market are different to what I get from other quote services (both L1 and L2).

    Can someone confirm where IB's prices are coming from in the pre open market.

    Thanks
    Echo
     
  2. left field:) All kidding aside, I pretty much ignore IB's quotes.
     
  3. Htrader

    Htrader Guest

    IB premarket quotes do not show market maker bids and offers, so this might be the difference.
     
  4. Fohat

    Fohat

    IB pre-open market bid/ask prices show quotes directly from the ECNs, which can be executed against, instantly.

    Frequently IB ECN direct quotes are ahead of LevelII quotes by half a second, which have to be aggregated first and than rebroadcasted.

    Fohat