weird block sizes?

Discussion in 'Trading' started by prc117f, Jun 2, 2008.

  1. prc117f

    prc117f

    I am looking at the tape and I notice sometimes you will see things like

    30.82 5000
    30.82 5000
    30.82 5000
    30.83 5000

    why not just 1 trade at 20000?

    and whats with the weird trades that have odd counts, like

    30.72 10147

    etc..
     
    #1     Jun 2, 2008
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  2. itcanbedone

    itcanbedone

    i can't say for sure, but could be bots doing arbs and also basket purchases.
     
    #2     Jun 2, 2008
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  3. prc117f

    prc117f

    I read that now there is some kind of darknet where some of the bigger firms trade with each other on a different type of network so that the transactions do not show up on the regular tape. I am not sure if that is true or not..

    So bots are those quantitive trading programs right?
     
    #3     Jun 2, 2008
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