I don't think we're in disagreement. The market maker wins, the exchange wins an... | Hacker News

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Permit on Oct 9, 2012 | parent | context | favorite | on: Mysterious Algorithm Was 4% of Trading Activity La...

I don't think we're in disagreement. The market maker wins, the exchange wins and the bid-ask spread is made smaller.

cma on Oct 9, 2012 [–]

Not really; at the margins we are at, people are trading a fair coin toss of a nickle on each traded for a weighted (against them) toss of a penny.

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