As noted in a letter last week to Mary Schapiro, chairman of the Securities and Exchange Commission, Nasdaq OMX has been examining questions related to the increasing prevalence of “flash” order types in the cash equities market, as well as a related trend in US markets towards “darkness” – activity or orders not transparent to the full market.
我們在上週致美國證券交易委員會(SEC)主席瑪麗•夏皮羅(Mary Schapiro)的信中表明，那斯達克OMX(Nasdaq OMX)一直在研究與以下現象相關的問題：「閃電指令」(flash order)在現貨證券交易市場日益流行，及美國市場向着「黑箱操作」(darkness)發展的相關趨勢。所謂黑箱操作，是指不對整個市場公開的活動或指令。
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