We study the effects of changes in bid-ask spreads on the prices and trading volumes of stocks that move from Nasdaq to the NYSE or Amex, and stocks move from Amex to Nasdaq. When stocks move from Nasdaq to an exchange, their spreads typically decrease, but the reduction in spreads is much...

We study the effects of changes in bid-ask spreads on the prices and trading volumes of stocks that move from Nasdaq to the NYSE or Amex, and stocks that move from Amex to Nasdaq. When stocks move from Nasdaq to an exchange, their spreads typically decrease, but the reduction in spreads is...

On January 20, 1997, the Securities and Exchange Commission began requiring Nasdaq market makers to execute or display customer limit orders. In addition, Nasdaq began displaying quotes placed by market makers to execute or display customer limit orders. In addition, Nasdaq began displaying...

The relative merits of dealer versus auction markets have been a subject of significant and sometimes contentious debate. On January 20, 1997, the Securities and Exchange Commission began implementing reforms that would permit the public to compete directly with Nasdaq dealers by submitting...