"Using short-sale transactions data, we examine the relation between short selling and the weekend effect. We do not find that short selling is more abundant on Monday than on Friday, even for stocks that have higher Friday returns. We find that short sellers execute more short-sale volume...

We examine the impact of market maker concentration on adverse-selection costs for NASDAQ stocks and find that more market makers results in lower costs. Furthermore, this reduction in adverse selection exceeds the overall reduction in spreads that is attributable to market maker competition. We...

Nasdaq spreads decline from 1993 to 2002, largely independently of tick-size reductions. Trade size declines, consistent with greater retail investor activity. Using the method of Chordia, Roll, and Subrahmanyam (2001), we find that concurrent market returns strongly affect liquidity and trading...

We document trade price clustering in the futures markets. We find clustering at prices of x.00 and x.50 for S&P 500 futures contracts. While trade price clustering is evident throughout time to maturity of these contracts, there is a dramatic change when the S&P 500 futures contract is...

We examine clustering of transaction prices in a sample that contains high-frequency trading firms’ transactions. We separate our sample into four categories: transactions with a high-frequency trading firm on both sides of the transaction, on only one side of the transaction (either liquidity...

Affleck-Graves, Hegde and Miller (1994) find that the adverse selection component of the bid-ask spread is higher for NYSE and Amex stocks than for Nasdaq stocks. Using the model of Huang and Stoll (1997), we revisit their study and find the opposite to be true - the adverse selection component...

Do related markets reflect new information simultaneously? For high-yield bonds, a large abnormal price decline in a corporation's most liquid bond over a month is followed by an average abnormal stock price decline of −1.42%. This effect is larger for stocks that have increased in value and...