The "flash crash" of May 6 largely was contained to the U.S., but as regulators struggle with causes of the market plunge, it is becoming obvious that changes are likely, according to Reuters. Those changes likely would affect the way trillions of dollars move through stock markets worldwide. Business models of exchanges, banks, brokers, funds and proprietary-trading firms also could be affected. The biggest changes, however, likely would concentrate on high-frequency trading.
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