frontrunning

noun

stock exchange the practice by market makers of using advance information provided by their own investment analysts before it has been given to clients

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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Contemporary Examples of frontrunning