We study odd-lot trading and determine if an odd-lot trade results from odd-lot orders or if odd-lots are a result of orders broken into multiple trades. We confirm that odd-lot transactions contribute to price discovery. Our finding that odd-lot transactions contain substantial information is...

In this study we examine intense episodic spikes in quoting activity (frequently referred to as quote stuffing) on market conditions. We find that quote stuffing is pervasive and that over 74% of U.S. exchange-listed securities experienced at least one episode during 2010. We also find that...

On September 8, 2008, a false-news event precipitates a sharp decline in United Airline's stock price, rapidly leading to an exchange-mandated trading halt. This event allows for the empirical investigation of the effects of a false-news trading halt in an attempt to determine its effect on...

This paper examines the Financial Management Association (FMA) Annual Meeting programs from 1996 through 2012. During this 17 year time period, 2,107 institutions are represented on the FMA program. Georgia State University has the most authors on the FMA program during this time period. There...

This study examines relations between high frequency trading, order flow toxicity, stock price volatility during normal and high order flow toxicity periods, and predictability of changes in high frequency traders' liquidity supply and demand. By employing Volume-synchronized probability of...

1-share trades are the most common odd lot trade size, accounting for 9.62% of all odd lot transactions and 3.65% of all trades on NASDAQ in 2012. While 50.41% of 1-share trades result from broken orders, 34.89% of 1-share trades are intentional. We provide evidence that traders use 1-share...

This paper investigates the effects of an increase in tick size on order and trading flow across market fee venues. Using the pilot firms in the SEC's Tick Size Pilot Program, we document trade and order volume declines significantly on maker-taker fee venues after the tick size implementation....

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...

Island is the largest electronic communications network in the US. On March 18th 2002, it began reporting trades to the Cincinnati Stock Exchange (CSE) to reduce costs. We use the information generated following this trade reporting change to analyze differences in trading characteristics and...

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...