What is this in the SPY?

Discussion in 'Trading' started by BobbiDigital, Dec 20, 2011.

  1. Just a glitch in IB's software or what? I haven't been in the market when I have seen these substantial blips happen.
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  2. rmorse

    rmorse Sponsor

    These prints are either bad prints or prints against SPY options that are printed late. Check the volume at that time. If it was large, it was most likely vs options.