time and sales in IB

Discussion in 'Options' started by TITANIMUM, Aug 14, 2012.

  1. I trade futures and options with IB, whenever I trade I check the time and sales off the legs if a combo is traded. Why is it often the case the time and sales don't match the trade prices shown at the time? for the individual legs, and much more often the whole combo time and sales. fortunately most of the time I am the beneficiary by a significant margin. eg other day by up to 40%!
    but why is there this mismatch?
  2. Bob111


  3. what other posts have been on this anomaly? could it be because of internal trading? hell,they can do all the internal trading they want, so long as l am the overall beneficiary! if l was getting fills which were worse overall, l change broker.
  4. RPEX


    sorry for bumping

    But does anyone know of a 3rd party vendor which can show time and sales for all options on a given underlying. In fact "time & sales" as we know it is overkill, i just want the largest trades, it doesn't even have to be real time delayed would do.

    I understand many people have been looking for this. Livevol is too expensive just for this, and the block trades site on the cme is rubbish, and TWS t&s has always been dodgy anyway - half the time even the prints on the charts are dodgy.

  5. Maybe they just assign the legs arbitrarily when a spread order is executed?

    Only the net value needs to be a market value.