Dynamic portfolio trading system is used to allocate one’s capital to a number of securities through time in a way to maximize the portfolio return and to minimize the portfolio risk. Genetic programming (GP) as an artificial intelligence technique has been used successfully in the financial field, especially for the forecasting tasks in the financial markets. In this paper, GP is used to devel...

This paper investigates trading volume before scheduled and unscheduled corporate announcements to explore how traders respond to private information. I show that cumulative trading volume decreases by more than 15% prior to scheduled announcements. The decline in trading volume is largest when information asymmetry is high, while the opposite relation holds for volume after the announcement. I...

We propose a new measure capturing three dimensions of trading restriction tightness: trading quantity, speed, and cost. By using this new measure, we document a positive effect of restriction tightness on illiquidity discounts of restricted shares relative to their liquid counterparts, inferred from Division Reform, a market-level process of releasing trading restrictions in China Stock Market...

We investigate the effects of a class of trading protocols on the architecture and efficiency properties of endogenously formed trading networks. In our model, the opportunity to sell valuable objects occurs randomly to different individuals. A sale can only be realized if two individuals are connected, directly or indirectly, but forming and maintaining a trading relation is a costly investmen...

Standard models of algorithmic trading neglect the presence of a daily cycle. We construct a model in which the trader uses information from observations of price evolution during the day to continuously update his estimate of other traders’ target sizes and directions. He uses this information to determine an optimal trade schedule to minimize total expected cost of trading, subject to sign co...

The fixed income (FI) market is a financial market where debt securities are traded commonly in the form of bonds. Unlike equity securities which are traded on exchanges, the debt securities are primarily traded in over-the-counter (OTC) markets. While the use of electronic trading systems in the fixed income market is growing, the majority of the FI market is still driven by broker-dealer rela...

We examine the role of information-based stock trading in affecting the risk-incentive relation. By incorporating an endogenous informed trading into an optimal incentive contracting model, we analytically show that, apart from reducing incentives, a greater risk increases the level of information-based trading which consequently enhances executive incentives and offsets the negative risk-incen...

This study examines the relationships between the herding of various investor groups and trading noise in the Taiwan stock market to determine whether any of the investor groups tend to herd rationally. The study uses a unique and comprehensive data set on intraday transactions and limit order books of the Taiwan Stock Exchange (TWSE). We calculate the high-frequency herding measures and tradin...

this paper investigates the informational content of abnormal volume trading of shares listed at tehran stock exchange (tse) using an event study methodology. the results for a sample of 48 iranian firms during 1385-1388 show that there are abnormal returns before and after the abnormal trading volume dates. regression analysis also shows that there is a significant relationship between trading...