RT Journal Article SR Electronic T1 Liquidity Begets Liquidity JF Trading FD Institutional Investor Journals SP 15 OP 20 VO 2009 IS 1 A1 Asani Sarkar A1 Robert A. Schwartz A1 Nick Klagge YR 2009 UL http://guides.pm-research.com/content/2009/1/15.abstract AB Dark liquidity pools have emerged and proliferated in recent years. Do they lower market quality or are the worries about them much ado about nothing? It is not possible to answer this question without understanding the dynamics of liquidity creation and the sidedness of markets (the extent to which buyers and sellers are both actively present in a market in roughly equal proportions). This article summarizes the authors' findings on sidedness, and discusses their implications for liquidity generation in general and for the development of dark pool liquidity in particular. The study has implications for algorithmic trading, transparency, and the effect of order flow fragmentation on liquidity creation.