What ECN is?
From Wikipedia, the free encyclopedia
An electronic communication network (ECN) is a financial term for a type of computer system that facilitates trading of financial products outside of stock exchanges. The primary products that are traded on ECNs are stocks and currencies. The first ECN, Instinet, was created in 1969. ECNs increase competition among trading firms by lowering transaction costs, giving clients full access to their order books, and offering order matching outside of traditional exchange hours.[citation needed] ECNs are sometimes also referred to as Alternative Trading Systems or Alternative Trading Networks.
Contents
Function
To trade with an ECN, one must be a subscriber or have an account with a broker that provides direct access trading. ECN subscribers can enter orders into the ECN via a custom computer terminal or network protocols. The ECN will then match contra-side orders (i.e. a sell-order is 'contra-side' to a buy-order with the same price and share count) for execution. The ECN will post unmatched orders on the system for other subscribers to view. Generally, the buyer and seller are anonymous, with the trade execution reports listing the ECN as the party.
Some ECN brokers may offer additional features to subscribers such as negotiation, reserve size, and pegging, and may have access to the entire ECN book (as opposed to the 'top of the book') that real-time market data regarding depth of trading interest.
ECNs are generally facilitated by electronic negotiation, a type of communication between agents that allows cooperative and competitive sharing of information to determine a proper price.
Negotiation types
The most common paradigm is the electronic auction type. As of 2005, most e-business negotiation systems can only support price negotiations. Traditional negotiations typically include discussion of other attributes of a deal, such as delivery terms or payment conditions. This one-dimensional approach is one of the reasons why electronic markets struggle for acceptance. Multiattributive and combinatorial auction mechanisms are emerging to allow further types of negotiation.
Support for complex multi-attribute negotiations is a critical success factor for the next generation of electronic markets and, more generally, for all types of electronic exchanges. This is what the second type of Electronic negotiation, namely Negotiation Support, addresses. While auctions are essentially mechanisms, bargaining is often the only choice in complex cases or those cases where no choice of partners is given. Bargaining is a hard, error-prone, ambiguous task often performed under time pressure. Information technology has some potential to facilitate negotiation processes which is analyzed in research projects/prototypes such as INSPIRE, Negoisst or WebNS.
The third type of negotiation is automated argumentation, where agents exchange not only values, but also arguments for their offers/counter-offers. This requires agents to be able to reason about the mental states of other market participants.
Technologies
One research area that has paid particular attention to modeling automated negotiations is that of autonomous agents. If negotiations occur frequently, possibly on a minute per minute basis in order to schedule network capacity, or negotiation topics can be clearly defined it may be desirable to automate this coordination effort.
Automated negotiation is a key form of interaction in complex systems composed of autonomous agents. Negotiation is a process of making offers and counteroffers, with the aim of finding an acceptable agreement. During negotiation, each offer is based on its own utility and expectation of what other . This means that a multi criteria decision making is need to be taken for each offer.
An electronic communication network (ECN) is an electronic system that attempts to facilitate (for market makers) or eliminate (for individual investors) third party orders entered by a client's brokerage to be executed in whole or in part. ECNs network major brokerages and traders so that they can trade between themselves without having to go through a middleman. The advantage of an ECN is that it displays orders in real time.
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