后股权分置时代的监管法律问题研究

在可观察的后股权分置时代,证券市场法律监管重心将是对上市公司股权分置改革方案执行的监管,以及对经由股权分置改革在中国证券市场上再次引入权证的发行和交易的监管。同时,股权分置改革完成后将催生一个特殊的并购市场,对这一特殊并购市场的法律监管也会是重点。     

GARCH模型下的美式期权模拟定价——来自中国权证市场的经验

分别运用GBM模型和GARCH模型对我国市场上的股票价格进行参数估计,并使用最小二乘蒙特卡罗模拟方法对我国具有百慕大性质的权证进行蒙特卡罗模拟定价,发现GARCH模型的定价效果明显优于GBM假设下的定价,虚值程度越高的权证,定价误差越大。定价误差的对数与上证综合指数的对数之间存在明显的协整关系,权证没有卖空机制,使得套利无法实现,投机气氛较浓,是我国权证的市场价格明显高估的重要原因。实证对GARCH条件下的定价误差更加具有解释力。     

我国内地与香港地区权证市场发展之比较

本文首先介绍了权证的定义和分类等相关概念,然后简单阐述权证在内地和香港地区的发展状况,最后对两个市场进行比较分析,为内地权证市场的进一步繁荣和规范发展提供借鉴。     

Optimal policies of call with notice period requirement

When an American warrant or a convertible bond is called by its issuer, the holder is usually given a notice period to decide whether to sell the derivative back to the issuer at the call price or to exercise the conversion right. Several earlier papers have shown that such notice period requirement may substantially affect the optimal call policy adopted by the issuer. In this paper, we perform theoretical studies on the impact of the notice period requirement on issuer’s optimal call policy for American warrants and convertible bonds. We also examine how the optimal call policy of the issuer interacts with holder’s optimal conversion policy.     

Call Warrant Listing and the Behavior of its Underlying Spot Market: Some Evidence from Bursa Malaysia

This study investigates the call warrant listing impact on its underlying stock based on Malaysian stock market. The study indicates that call warrant listing has no significant impact on the return, volatility, and bid-ask spread of its underlying stock. However, its trading volume tends to be higher in the post event period. The results suggest that (1) the diversion of trade from spot to warrant market is nonexistent, (2) call warrant does not expand the opportunity set for investors, (3) it is fair to use historical data in volatility estimation for the purpose of asset pricing based on Malaysian context.     

A Comparison of Measures of Earnings Per Share

Abstract

This paper explores alternative methods for computing earnings per share (EPS) for a company whose capital structure consists of ordinary shares and warrants. The methods for computing EPS identified by the FASB (1996) are critically evaluated and an alternative measure, the holding period approach,is developed within the framework of contingent claims analysis. Two types of errors are shown to characterize the accounting measures of EPS. One arises from failure of accounting measures to fully recognize the contingent nature of the warrant. The other arises from the practice of not recognizing instances of anti-dilution. A further factor is the treatment of any difference between the proceeds from the issue of the warrants and their fair value at that time. This is ignored in existing measures and yet may have a significant effect on the value of the claims of ordinary shareholders on the company’s earnings. Using a simulation method it is shown that the imputed earnings method of computing EPS is a very close approximation to the holding period method and is considerably more accurate than treasury stock measures favoured by accounting standards bodies.