今天的开场白，必须首先Update大家：（1）高频率交易（High Frequency Trading）及（2）黑池交易（Black Pool Trading），能否为投行「保命，甚至在短时间之内复元。
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市场一直不稳定。我们相信市场会继续波动，直到美国证券交易委员会着手管理高频率交易团伙的活动。
Markets have been volatile and we believe that they will remain volatile until the U.S. Securities and Exchange Commission begins to rein in the activities of the high frequency trading community.
管理机构认为，价格开始急剧涨跌时，有些高频率交易员会关闭程序，害怕他们的交易因为跌幅过大而被取消。
Regulators think that some high-frequency traders switched off their programs when prices began to spiral, fearful that their trades would be cancelled because of the severity of the declines.
Andrew Haines说，在全部股票交易中，估计有70%的交易是电脑操作的高频率交易，股票或许只持有几秒钟。
Andrew Haines says an estimated seventy percent of all stock trades are high-frequency trades made with computers. Stocks may be held for only seconds.
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