中国股票市场在推进规范化、市场化的过程中仍旧存在着种种问题，这需要我们从股市投资者结构、政策市特征、投资者行为及其差异、全流通问题及QFII的影响等多方面入手，来正确寻找中国股市问题的症结所在，从而才能对新时期我国股票市场的运行状况有一个清醒及彻底的认识，并为市场的规范化道路扫清认识上的障碍。

Using daily data from May 2000 to January 2004, this study examines the risk, return, security selection and market timing performance of China’s security investment funds, in comparison with the performance of SIFs in the U.S. Our results indicate that China investment funds show superior marketing timing performance while U.S. fund managers display stronger security selection ability. These results imply that the potential synergy for Sino-U.S. joint venture investment funds could be tremendous. Additional analysis of the trading volume of closed-end funds in China illustrates that investors’ interests in SIFs are strongly and positively related to fund performance. Results also indicate that Chinese investors favor professionally managed funds more than direct investment in stocks during negative market conditions.

本文通过对沪深上市公司的经验研究发现，公司股权结构对公司绩效有显著影响，当国有（法人）股权增加或减少时，公司绩效的变化与法人（国有）股权的水平有关。因此，在国有资产管理当局选择最优国有股权水平时，应该同时考虑法人股权水平大小对公司绩效的影响。

我国上海和深圳股票市场普遍存在重消息、轻业绩的现象，来自各个层面的消息往往会导致股票价格指数大幅度波动。本文对上证综合指数和深证成份指数历年数据做统计检测，以描述指数本身波动所具有的特征。在此基础上，本文构建GARCH系列模型判断并检验市场利好和利空信息对股指波动程度的影响，从实证角度得出股指波动对利好和利空信息冲击具有非对称性的特征。

This study examines the role of information uncertainty (IU) in predicting cross-sectional stock returns. We define IU in terms of "value ambiguity", or the precision with which firm value can be estimated by knowledgeable investors at reasonable cost. Using several different proxies for IU, we show that: (1) On average, High IU firms earn lower future resturns (the "mean" effect), and (2) Price and earnings momentum effects are much stronger among high IU firms (the "interaction" effect). These findings are consistent with theoretical models that feature investor overconfidence (Daniel et al. (1998)) and information cascades (Bikhchandani et al. (1992)). Specifically, our evidence indicates that high IU exacerbates investor overconfidence and limits rational arbitrage.

This paper generalizes the Myers and Majluf (1984) model by introducing an agency cost structure based on private benefits of control. This new model predicts that many corporate finance variables each have opposing effects on under- and overinvestment. Private benefits exacerbate overinvestment but, interestingly, a small amount of private benefits can enhance firm value by alleviating underinvestment. Likewise, an increase in insider ownership alleviates overinvestment but aggravates underinvestment. When private benefits are small, the adverse effect of insider ownership on underinvestment tends to dominate. When there are considerable private benefits, the incentive-alignment effect of insider ownership is pronounced. Additionally, this model reconciles existing equity financing theories on announcement effects. It helps resolve the puzzle that small-growth firms do not seem to have an asymmetric information disadvantage when they issue new equity.

本文通过比较价格操纵行为和价格竞争行为的特点，判断非投机价格时间序列应该具有收益率序列相关、时变条件方差不稳定的特点，并通过经验研究证实了这个判断。

We analyze the possible effect of price limit to informed traders’ behavior and propose three hypotheses caused by price limit. Then comprehensively using the event study method and comparative grouping method, we empirically exams the performance of price limit in China’s stock market. Our finding is that price limit policy will bring significant effect to the trading behavior of insiders, which means price limit policy will impede the fulfillment of insiders’ trading activities and delay equilibrium price discovery.

本文以迅猛发展的全球金融市场为背景，深入分析了证券价格指数体系的多层次、多角度细化发展与不断延伸和拓展中的指数功能，探讨了全球围绕着证券价格指数的种种金融产品创新及其方向，这对我国国内证券价格指数体系的发展和指数产品化创新有着重要的借鉴意义。

Abstract: In this paper, we assume the R&D research for new products and new business models of an entrepreneur will get some cash-flow in the future. And because of the patent protection, the entrepreneur will become a monopolist in that defined market. The successful R&D research represents the growth value for the entrepreneur. We assume that the value of growth is the value of the entrepreneur. The total market value of entrepreneur can be understood as a real growth option plus a discounted real exchange option. The first time in the theory, this paper gets the formula of the real compound option under three stochastic parameters. 关键词：创业企业，增长价值，定价，复合实物期权 Keywords: entrepreneur, growth value, pricing, compound real option