In June 1997, the Nasdaq stock market and the New York Stock Exchange (NYSE) each lowered its minimum price increment on most stocks from eighths to sixteenths. Like other researchers investigating similar events, we find that quoted spreads and effective spreads decline on both markets with the...

We compare institutional execution costs across the major U.S. exchanges using a sample of institutional equity orders in firms that switch exchanges. Execution costs including commissions are essentially indistinguishable across these exchanges. We also find the fraction of trading volume from...

We compare the price impact of trades across market structures by examining firms that switch exchanges. When firms are listed on Nasdaq, quoted prices adjust quite slowly to the information contained in order flow. On average, it takes about 5 minutes (or about 6 transactions) for half of the...