Well..
What they do is often pejoratively called &quot;front running&quot;.
A carefully crated google can serve as witness : <a href="https:&#x2F;&#x2F;www.google.com&#x2F;?gws_rd=ssl#q=medallion+front+running" rel="nofollow">https:&#x2F;&#x2F;www.google.com&#x2F;?gws_rd=ssl#q=medallion+front+running</a><p>I certainly meant it in that sense.
I&#x27;m not accusing the Medallion of illegal front running.<p>I think people like Brad Katsuyama and fixing the &quot;early information&quot; problem are the answer to this kind of behavior.  Katsuayama is working on a system to make the fight between high frequency traders and other investors more fair.  Good write up is here : <a href="http:&#x2F;&#x2F;www.nytimes.com&#x2F;2014&#x2F;04&#x2F;06&#x2F;magazine&#x2F;flash-boys-michael-lewis.html" rel="nofollow">http:&#x2F;&#x2F;www.nytimes.com&#x2F;2014&#x2F;04&#x2F;06&#x2F;magazine&#x2F;flash-boys-michae...</a> ...<p><i>&quot;Coil the fiber. Instead of running straight fiber between the two places, why not coil 38 miles of fiber and stick it in a compartment the size of a shoe box to simulate the effects of the distance. And that’s what they did.&quot;</i>