Bid Ask Determination

Discussion in 'Trading' started by carltonp, Sep 17, 2011.

  1. Traders,

    I have a newbie question.

    Lets say we have the following for Mini-Dow(YM)

    Bid Ask. Bid Size Ask Size Last. Last Size
    10964 11075 1 2 11020 1

    Is it possible to determine if the last trade price of 11020 executed at bid or ask?


  2. rmorse

    rmorse Sponsor

    If your trying to determine if the bid came in first, then hit by the seller or the other way around, you would need a platform that offers last sale by the exchanges and the changes in BID/ASK spread to 1/100 of a second. I don't know any one that has that except the exchanges for internal use, and I'm not sure what you'd do with the information.
  3. rosy2


    if you're using FIX, the agressor tag will tell you :cool:
  4. Don't understand. Not familiar with FIX