Both broker-dealer-owned and independent dark pools are getting tough on "gaming," or the use of trade information by another party for financial gain. The potential problem intensifies as more liquidity flows into the dark pools. Tabb Group estimated that at least 10% of daily volume is running through dark pools. A Tabb report from last year found that 60% of buy-side participants surveyed said the gaming threat affected their decision on whether to interact with the pools.

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