We examine execution costs and quote clustering on the New York Stock Exchange (NYSE) and NASDAQ using 517 matching pairs of stocks after decimalization. We find that the mean spread of NASDAQ stocks is greater than the mean spread of NYSE stocks when spreads are equally weighted across stocks,...

In this paper, we determine whether each bid (ask) quote reflects the trading interest of the specialist, limit order traders, or both for a sample of NYSE stocks in 1991. We then compare Nasdaq spreads with NYSE spreads that reflect the trading interest of the specialist. Our empirical results...

This paper examines liquidity and quote clustering on the NYSE and Nasdaq using data after the two market reforms-the 1997 order-handling rule and minimum tick size changes. We find that Nasdaq-listed stocks exhibit wider spreads and smaller depths than NYSE-listed stocks and stocks with higher...

This study compares the components of the bid-ask spread estimated from quotes that reflect the trading interest of specialists with those estimated from limit-order quotes and all available quotes for a sample of New York Stock Exchange (NYSE) stocks. The results show that the adverse selection...