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Discretionary order in an electronic guaranteed entitlement environment

  • US 8,600,862 B2
  • Filed: 09/02/2010
  • Issued: 12/03/2013
  • Est. Priority Date: 07/28/2006
  • Status: Active Grant
First Claim
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1. A method for trading discretionary orders in an electronic options trading environment with market maker participation, comprising:

  • providing a market center which lists a plurality of options series, wherein the market center has at least one order book for each option series and at least one quote book for each option series, wherein the order book has a displayed interest component which is processed in a display order process and a nondisplayed interest component which is processed in a working order process, and wherein at least a portion of plurality of the option series have a lead market maker;

    posting a discretionary order having a total size, a display price for display, and a discretionary price that is not for display;

    receiving an incoming contra side order having a second total size, a second display price for display, and a second discretionary price that is not for display, wherein the incoming contra side order is on the side of the order book opposite to the discretionary order;

    determining whether the incoming contra side order is for an option series that has a second lead market maker;

    responsive to determining that the incoming contra side order is for the option series that has the second lead market maker;

    determining whether the second lead market maker has a quote at the NBBO;

    responsive to determining that the second lead market maker has the quote at the NBBO;

    computing an allocation percentage for the second lead market maker;

    matching the incoming contra side order up to the lesser of the second total size of the incoming contra side order or the computed allocation percentage amount for the second lead market maker; and

    after matching the incoming contra side order with the second lead market maker quote, matching at least a portion of the remainder of the incoming contra side order with the discretionary order using the second display price.

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