There are multiple brokers that route trades through NITE, they're one of the largest MM in the OTCBB arena. The head of Scottrade sits on the board of directors at Knight Equity Markets. But there is a common misconception of what the true definition of an MM is. An MM is there to provide liquidity (aka ensuring there's always a bid/ask, even if it's a bad price at least it exists). Nothing says profit can't be made, but that it's not the only purpose.
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