att - alpha, rembrandt etc(or anyone who knows any

  1. 4,302 Posts.
    If somebody has a sell order of 20000 shares(disclosed), and I buy say 15000 of them, shouldn't I see the market depth of their order change when mine is accepted? I ask this because I have been watching a share and I have recently bought a couple of chunks of it. Interestingly there appears to be one seller who will sell at the range I want, but as soon as my order is filled, the sellers quantity is back to the original figure. This would cost a fortune in brokerage if they kept replacing the order would it not? Who would do such a thing? Brokers perhaps? TIA
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