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A comment on Algorithms take control of Wall Street. Parent comment
The market makers (and shadow market makers) on the ECNs get paid for providing liquidity, rather than having to pay.
This kind of stuff isn't supposed to happen on the NYSE, as all the trading goes through a single specialist.
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The market makers (and shadow market makers) on the ECNs get paid for providing liquidity, rather than having to pay.
This kind of stuff isn't supposed to happen on the NYSE, as all the trading goes through a single specialist.