An Electronic Communications Network (" ECN ") is not considered a market maker for the purpose of these rules.

电子通信系统(“ECN”)不被认为是这些规则所认定的造市者。

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During a stint at SunGuard Data Systems in the late 1990s he helped develop Brut, an early electronic communications network, or ECN, that allowed traders to bypass established exchanges and match their buy and sell orders online.

FORBES: About Robert Greifeld