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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Direct market access ： ウィキペディア英語版 Direct market access Direct market access (DMA) is a term used in financial markets to describe electronic trading facilities that give investors wishing to trade in financial instruments a way to interact with the order book of an exchange. Normally, trading on the order book is restricted to broker-dealers and market making firms that are members of the exchange. Using DMA, investment companies (also known as buy side firms) and other private traders utilize the information technology infrastructure of sell side firms such as investment banks and the market access that those firms have, but control the way a trading transaction is managed themselves rather than passing the order over to the broker's own in-house traders for execution. Today, DMA is often combined with algorithmic trading giving access to many different trading strategies. Certain forms of DMA, most notably "sponsored access," have raised substantial regulatory concerns because of the potential for a malfunction by an investor to cause widespread market disruption.〔Lemke and Lins, ''Soft Dollars and Other Trading Activities'', §1:22 (Thomson West, 2012-2013 ed.).〕 ==History== As financial markets moved on from traditional open outcry trading on exchange trading floors towards decentralised electronic, screen-based trading and information technology improved, the opportunity for investors and other buy side traders to trade for themselves rather than handing orders over to brokers for execution began to emerge. The implementation of the FIX protocol gave market participants the ability to route orders electronically to execution desks. Advances in the technology enabled more detailed instructions to be submitted electronically with the underlying order. The logical conclusion to this, enabling investors to work their own orders directly on the order book without recourse to market makers, was first facilitated by electronic communication networks such as Instinet. Recognising the threat to their own businesses, investment banks began acquiring these companies (e.g. the purchase of Instinet in 2007 by Nomura Holdings)〔http://www.efinancialnews.com/story/2006-11-02/nomura-to-buy-instinet〕 and developing their own DMA technologies. Most major sell-side brokers now provide DMA services to their clients alongside their traditional 'worked' orders and algorithmic trading solutions giving access to many different trading strategies. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Direct market access」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.