作 者: ;
机构地区: 汕头大学商学院
出 处: 《中国经济评论(1536-9056)》 2007年第11期13-21,共9页
摘 要: 本文以Jarrow的囤积逼空模型为基础,推导出在不存在做空机制的中国股票市场中囤积逼空策略是不可行的,但投机者仍然可以通过收购股票至一定的持股率,并将股价推至某一高位後突然抛出来获取操纵利润,操纵利润与股票交易成本负相关。因此,证券市场的监管者可以通过提高交易成本来遏制操纵股市的行为。另外,投机者可以通过发布虚假信息或者重大事件公告(如收购、重组等)来降低操纵风险。增加操纵收益。本文研究表明,价格对所披露的信息越是敏感,投机者操纵股价的难度越小;市场申的噪音交易者越多,股价被操纵的可能性也就越大。提高信息披露的透明度和信息质量是管制股市操纵行为的最有效手段。 This paper based on Jarrow's model of comer and short squeeze, implies that under Chinese stock market where short hedge is forbidden, cornering and short squeeze strategy is unfeasible, but speculators can obtain abnormal manipulative return through buying some kinds of stocks at a suitable holding rate and pushing their price to an altitude and then unloading them. Speculators also can safely increase their manipulative return via publishing false information. We find that stock market monitors can contain manipulative behavior through raising exchange cost or enhancing transparency of information.