For NYSE-listed IPOs, limit order submissions and depth relative to volume are unusually low on the first trading day. Initial buy-side liquidity is higher for IPOs with high-quality underwriters, large syndicates, low insider sales, and high premarket demand, while sell-side liquidity is higher...

In August 1999, U.S. exchanges began to compete directly for order flow in many options that had been exclusively listed on another exchange, shifting 37% of option volume to multiple-listing status by the end of September. Effective and quoted bid-ask spreads decrease significantly after...

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...