The term “illegal price manipulation” is difficult to define. Current U.S. law does not explicitly define it. The finance and economics literature uses the term “manipulation” in an imprecise manner. This paper proposes that a trading strategy not be classified as “illegal price manipulation” unless the violator’s intent is to pursue a scheme that undermines economic efficiency both by making p...

the purpose of this research is to detect manipulation of stock prices in tehran stock exchange that it has been done through hybrid genetic algorithm-artificial neural network (ann-ga) model and the simplified quadratic discriminant function (sqdf) model. in this study, the variables of price, trading volume and free float stock to match the results of the model and the actual data of price ma...

Before the introduction of a call auction at the close, the last minute of trading at the Paris Bourse was the most active of the whole day. Even though the bid–ask spread increased substantially, the probability of large and aggressive orders increased, as did price volatility. In addition, both the one-minute returns and the proportion of partially hidden orders increased. In this paper, we d...

Previous studies have examined the manipulation of executive stock option awards and exercises, focusing on information timing by managers. In this paper, we investigate potential managerial manipulation of stock-price performance motivated by executive stock options. To distinguish performance manipulation from information timing, we examine stock-price performance surrounding the departure of...

phenomenon of price manipulation is one of the factors which have caused mistrust of the investors to the stock market and inhibits its growth and prosperity. entering the shareholders into the stock market, on one hand leads to increase in the general level of revenues and on the other hand causes inexpensive financing for companies. in this research, at first by using duration dependence test...

Use of trading strategies to mislead other market participants, commonly termed market manipulation, has been identified as a major problem faced by present day stock markets. Although some mathematical models of market manipulation have been previously developed, this work presents a framework for manipulation in the context of a realistic computational model of a limit-order market. In this w...

oil seeds and crude vegetable oil are the raw materials used in vegetable oil producing industry. vegetable oil producing plants in iran are dependent on importing the material in a way that more than 90 percent of these materials are to be imported. soybean oil seed is the main oil seed utilized in the oil producing plants which is procured through importation from other countries. in the worl...