We study the effects of alternative halt and reopening procedures on prices, transaction costs, and trading activity for a sample of news-related trading halts on Nasdaq. For intraday halts that reopen after only a five-minute quotation period, inside quoted spreads more than double following...

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...

On May 26 and 27, 1994, several national newspapers reported the findings of Christie and Schultz (1994) who cannot reject the hypothesis that market makers of active NASDAQ stocks implicitly colluded to maintain spreads of at least $.25 by avoiding odd-eighth quotes. On May 27, dealers in...

From 1997 to March 2000, as technology stocks rose more than five-fold, institutions bought more new technology supply than individuals. Among institutions, hedge funds were the most aggressive investors, but independent investment advisors and mutual funds (net of flows) actively invested the...