Do Dark Pools Harm Price Discovery?
Massachusetts Institute of Technology (MIT) - Sloan School of Management
November 20, 2012
Dark pools are equity trading systems that do not publicly display orders. Dark pools offer potential price improvements but do not guarantee execution. Informed traders tend to trade in the same direction, crowd on the heavy side of the market, and face a higher execution risk in the dark pool, relative to uninformed traders. Consequently, exchanges are more attractive to informed traders, and dark pools are more attractive to uninformed traders. Adding a dark pool alongside an exchange tends to concentrate price-relevant information into the exchange and improve price discovery. Improved price discovery coincides with reduced exchange liquidity.
Number of Pages in PDF File: 64
Keywords: dark pools, price discovery, liquidity, fragmentation, equity market structure
JEL Classification: G12, G14, G18working papers series
Date posted: December 16, 2010 ; Last revised: November 21, 2012
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