In fact, the PowerShares Dynamic Networking (PXQ) exchange-traded fund (ETF) has surged 35% since the start of the year, versus CSCO's 15.8% decline for the same period, indicating that the networking sector is doing just fine without the blue chip's help.

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This dynamic boosts the chance the flash-order trader will complete the trade on the exchange and get the rebate.

WSJ: Ban on Flash Orders Is Considered by SEC