We investigate how and why relative tick sizes influence traders' order strategies, and how this affects liquidity provision in the market. Using unique NYSE data, we find that a larger relative tick size benefits HFT market makers: they leave orders in the book longer, trade more aggressively,...

In this paper, I evaluate how a centralized market impacts the opacity of an over-the-counter (OTC) market. I show that a competitive centralized market provides an incentive for dealers in the OTC market to reduce opacity, whereas a noncompetitive centralized market does not. Competition...