Abstract: In a preferred embodiment, the invention comprises a computer-implemented system and method of managing market information across a network of data providers, comprising the steps of: (a) electronically receiving first data including confidential information regarding market participants in a first system that protects said first data behind a firewall; (b) electronically receiving second data including confidential information regarding market participants in a second system that protects said second data behind a firewall; (c) electronically receiving an order and targeting parameters from a first market participant; (d) electronically issuing an advertisement request message to said first system and said second system, said advertisement message comprising display attributes of said order and comprising said targeting parameters; (e) electronically prompting said first system and said second system via the advertisement request message to each send a coordination request message to a Coordination Hub, said

Abstract: A first market participant submits an order comprising an indication of a level of visibility which the first market participant wishes to accord to notifications associated with the order. The indication of the level of visibility is independent of identities of second market participants. The notifications associated with the order are displayed on the computer systems of the second market participants only in accordance with the indication of the level of visibility.

Abstract: In a preferred embodiment, the invention comprises a computer-implemented system and method of managing market information across a network of data providers, comprising the steps of: (a) electronically receiving first data including confidential information regarding market participants in a first system that protects said first data behind a firewall; (b) electronically receiving second data including confidential information regarding market participants in a second system that protects said second data behind a firewall; (c) electronically receiving an order and targeting parameters from a first market participant; (d) electronically issuing an advertisement request message to said first system and said second system, said advertisement message comprising display attributes of said order and comprising said targeting parameters; (e) electronically prompting said first system and said second system via the advertisement request message to each send a coordination request message to a Coordination Hub, said

Abstract: In a trading system for trading securities or the like, traders are given various methods for providing protection from poor executions caused by adverse movements in the market and/or other traders seeking to “game” the system.

Abstract: In a trading system for trading securities or the like, Contra Targeting is performed by enabling users to expose the liquidity within their order management system without divulging order management system information to a central trading server. Also, virtual orders can be placed and executed which give users price-time priority on an order without reserving the shares until the moment of execution.

Abstract: Preferred embodiments of the subject invention comprise: (a) electronically receiving securities order-related data regarding a set of securities market participants; (b) electronically storing the received order-related data regarding the set of securities market participants; (c) electronically receiving a securities order-related query (or order parameters) from a first securities market participant; (d) based on the order-related query (or order parameters) received from the first securities market participant and on the securities order-related data regarding the set of securities market participants, computing a dissemination list of securities market participants based on ranking likely contras by probability of execution; and (e) transmitting that dissemination list to an entity who has been granted the privilege of receiving such lists in exchange for being contractually bound to respect confidentiality of the dissemination list and to use the list only for the purpose of sending securities-related i

Abstract: Preferred embodiments of the subject invention comprise: (a) electronically receiving securities order-related data regarding a set of securities market participants; (b) electronically storing the received order-related data regarding the set of securities market participants; (c) electronically receiving a securities order-related query (or order parameters) from a first securities market participant; (d) based on the order-related query (or order parameters) received from the first securities market participant and on the securities order-related data regarding the set of securities market participants, computing a dissemination list of securities market participants based on ranking likely contras by probability of execution; and (e) transmitting that dissemination list to an entity who has been granted the privilege of receiving such lists in exchange for being contractually bound to respect confidentiality of the dissemination list and to use the list only for the purpose of sending securities-related i

Abstract: Preferred embodiments of the subject invention comprise: (a) electronically receiving securities order-related data regarding a set of securities market participants; (b) electronically storing the received order-related data regarding the set of securities market participants; (c) electronically receiving a securities order-related query (or order parameters) from a first securities market participant; (d) based on the order-related query (or order parameters) received from the first securities market participant and on the securities order-related data regarding the set of securities market participants, computing a dissemination list of securities market participants based on ranking likely contras by probability of execution; and (e) transmitting that dissemination list to an entity who has been granted the privilege of receiving such lists in exchange for being contractually bound to respect confidentiality of the dissemination list and to use the list only for the purpose of sending securities-related i

Abstract: Preferred embodiments of the subject invention comprise: (a) electronically receiving securities order-related data regarding a set of securities market participants; (b) electronically storing the received order-related data regarding the set of securities market participants; (c) electronically receiving a securities order-related query (or order parameters) from a first securities market participant; (d) based on the order-related query (or order parameters) received from the first securities market participant and on the securities order-related data regarding the set of securities market participants, computing a dissemination list of securities market participants based on ranking likely contras by probability of execution; and (e) transmitting that dissemination list to an entity who has been granted the privilege of receiving such lists in exchange for being contractually bound to respect confidentiality of the dissemination list and to use the list only for the purpose of sending securities-related i

Abstract: Preferred embodiments of the subject invention comprise: (a) electronically receiving securities order-related data regarding a set of securities market participants; (b) electronically storing the received order-related data regarding the set of securities market participants; (c) electronically receiving a securities order-related query (or order parameters) from a first securities market participant; (d) based on the order-related query (or order parameters) received from the first securities market participant and on the securities order-related data regarding the set of securities market participants, computing a dissemination list of securities market participants based on ranking likely contras by probability of execution; and (e) transmitting that dissemination list to an entity who has been granted the privilege of receiving such lists in exchange for being contractually bound to respect confidentiality of the dissemination list and to use the list only for the purpose of sending securities-related i

Abstract: Preferred embodiments of the subject invention comprise: (a) electronically receiving securities order-related data regarding a set of securities market participants; (b) electronically storing the received order-related data regarding the set of securities market participants; (c) electronically receiving a securities order-related query (or order parameters) from a first securities market participant; (d) based on the order-related query (or order parameters) received from the first securities market participant and on the securities order-related data regarding the set of securities market participants, computing a dissemination list of securities market participants based on ranking likely contras by probability of execution; and (e) transmitting that dissemination list to an entity who has been granted the privilege of receiving such lists in exchange for being contractually bound to respect confidentiality of the dissemination list and to use the list only for the purpose of sending securities-related i

Abstract: Preferred embodiments of the subject invention comprise: (a) electronically receiving securities order-related data regarding a set of securities market participants; (b) electronically storing the received order-related data regarding the set of securities market participants; (c) electronically receiving a securities order-related query (or order parameters) from a first securities market participant; (d) based on the order-related query (or order parameters) received from the first securities market participant and on the securities order-related data regarding the set of securities market participants, computing a dissemination list of securities market participants based on ranking likely contras by probability of execution; and (e) transmitting that dissemination list to an entity who has been granted the privilege of receiving such lists in exchange for being contractually bound to respect confidentiality of the dissemination list and to use the list only for the purpose of sending securities-related i

Abstract: Preferred embodiments of the subject invention comprise: (a) electronically receiving securities order-related data regarding a set of securities market participants; (b) electronically storing the received order-related data regarding the set of securities market participants; (c) electronically receiving a securities order-related query (or order parameters) from a first securities market participant; (d) based on the order-related query (or order parameters) received from the first securities market participant and on the securities order-related data regarding the set of securities market participants, computing a dissemination list of securities market participants based on ranking likely contras by probability of execution; and (e) transmitting that dissemination list to an entity who has been granted the privilege of receiving such lists in exchange for being contractually bound to respect confidentiality of the dissemination list and to use the list only for the purpose of sending securities-related i

Abstract: Preferred embodiments of the subject invention comprise: (a) electronically receiving securities order-related data regarding a set of securities market participants; (b) electronically storing the received order-related data regarding the set of securities market participants; (c) electronically receiving a securities order-related query (or order parameters) from a first securities market participant; (d) based on the order-related query (or order parameters) received from the first securities market participant and on the securities order-related data regarding the set of securities market participants, computing a dissemination list of securities market participants based on ranking likely contras by probability of execution; and (e) transmitting that dissemination list to an entity who has been granted the privilege of receiving such lists in exchange for being contractually bound to respect confidentiality of the dissemination list and to use the list only for the purpose of sending securities-related i

Abstract: Preferred embodiments of the subject invention comprise: (a) electronically receiving securities order-related data regarding a set of securities market participants; (b) electronically storing the received order-related data regarding the set of securities market participants; (c) electronically receiving a securities order-related query (or order parameters) from a first securities market participant; (d) based on the order-related query (or order parameters) received from the first securities market participant and on the securities order-related data regarding the set of securities market participants, computing a dissemination list of securities market participants based on ranking likely contras by probability of execution; and (e) transmitting that dissemination list to an entity who has been granted the privilege of receiving such lists in exchange for being contractually bound to respect confidentiality of the dissemination list and to use the list only for the purpose of sending securities-related i

Abstract: Preferred embodiments of the subject invention comprise the steps of: (a) electronically receiving first participant information, said first participant information including a first order having a first price and a first size; (b) electronically receiving a second order having a second price and a second size from a second participant; (c) executing said second order against said first order if said first price matches said second price and said first size matches said second size, and if said first participant information indicates that said first order is exposed to immediate matching against incoming orders; and (d) executing randomly-timed match check events wherein other orders are matched against the first order if said first price and said first size match prices and sizes of said other orders and if said first participant information indicates that said first order is to be exposed to randomly-timed match check events.

Abstract: Preferred embodiments of the subject invention overcome the limitations of known trading interest dissemination and execution systems by (1) enabling market participants to limit dissemination of trading interests to only those other market participants likely to have a significant contra-interest, (2) enabling market participants to ensure that other market participants' disseminated trading interests are legitimate, and (3) enabling auctions among trading interests targeted and validated in this manner. Software of a preferred embodiment identifies likely contra-interests by analyzing information from various sources regarding certified trading interests.

Abstract: The subject invention overcomes the limitations of known market data displays by producing a graphical market display that integrates analysis of both 1) intra-day trading activity by classes of market participant, and 2) projected market impact as a function of trade size give the present set of executable orders in an electronic securities trade execution network. In a preferred embodiment, the display is used as the graphic user interface (GUI) of an ECN. In alternate preferred embodiments, the display is offered by a market data analysis service that accesses information form one or more ECNs, exchanges, or stock market. In another alternate embodiment, the display is created by software on a user computer form liquidity information already on that user computer.

Abstract: The present invention comprises systems and methods for facilitation of electronic securities trading. A preferred system embodiment comprises a trade facilitation computer system comprising a facilitator module, a financial information exchange server, a transactional database, and an analytics server operative to calculate reference prices for securities. A preferred method embodiment comprises the steps of receiving market data for a security; calculating a reference price for the security; receiving a first order comprising a first price limit and a first quantity limit; receiving a second order contra to the first order and comprising a second price limit and a second quantity limit; and executing a trade comprising the first order and the second order at a price whose difference from the reference price is minimized, wherein the trade complies with the first and second price and first and second quantity limits.

Abstract: A method for facilitating trading of securities over a computer system comprises electronically receiving a buy or sell order for a security from a first user; determining that the order is reasonably priced; transmitting to a second user an electronic notification that a reasonably priced order for the security is present, but without notifying the second user of the side of the first user's order; receiving an order from the second user, wherein the second user's order is a contra to the first user's order and sufficiently aggressive in price to cross the first user's order; and executing a trade comprising the first user's order and the second user's order at the limit price of the first user's order. Also described is an electronic system for facilitating securities trading that comprises a facilitator module, a financial information exchange server, a transactional database, and an analytics server.