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Diverse options order types in an electronic guaranteed entitlement environment

  • US 8,566,225 B2
  • Filed: 10/24/2012
  • Issued: 10/22/2013
  • Est. Priority Date: 07/28/2006
  • Status: Active Grant
First Claim
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1. A method for trading NOW orders in an electronic options trading environment with market maker participation, comprising:

  • (a) listing by a computing system having at least one processor and at least one memory a plurality of options series on a market center, wherein the market center has an order book for each option series and a quote book for each option series, and wherein a plurality of the option series have an appointed lead market maker;

    (b) receiving by a computing system an NOW order;

    (c) retrieving by a computing system the side of the NBBO opposite the NOW order;

    (d) determining by a computing system whether the NOW order price is equal to or overlaps with the retrieved side of the NBBO;

    (e) responsive to determining that the NOW order price is equal to or overlaps with the retrieved side of the NBBO, determining by a computing system whether the NOW order is for an option series that has a lead market maker, and determining if the lead market maker has a quote at the NBBO; and

    (f) responsive to determining that the NOW order is for an option series that has a lead market maker and the lead market maker has a quote at the NBBO, computing by a computing system an allocation percentage for the lead market maker and matching by a computing system the NOW order up to the lesser of the total size of the NOW order or the computed allocation percentage amount for the lead market maker.

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