中国新疆与周边区域矿业经济合作辩析

本文通过对新疆矿业经济与周边国家和地区进行国际合作的分析,将俄罗斯、中亚选为合作目标区,并提出了利用"两个资源"、"两个市场"的战略构想,探讨新疆矿业经济步入国际合作轨道的途径。     

我国开展融资融券业务的必要性及其对策

融资融券交易是世界股票市场广泛流行的交易方式之一,比较成熟的证券市场都允许股票信用交易,如美国、日本、韩国、西欧等国的证券交易法律都有信用交易的规定。融资融券交易之所以广泛流行,是因为这种交易对证券市场及其参与者都具有其积极的作用。尤其在中国更有其必要性。我国证券市场即将开展融资融券业务,在此情况下,研究和探讨开展融资融券业务的必要性及其对策极具现实意义。     

沪深300股指期货定价实证研究

股指期货是一种发展迅速的金融衍生产品,而合约定价问题是其重要研究方向之一。股指期货定价的基本方法是利用无套利定价原理得出的持有成本模型;而如果综合交易费用、融资成本、存贷款利差、保证金等市场因素,则可以得到股指期货的无套利定价区间。使用这两种模型对中国金融期货交易所的沪深300股指期货仿真交易合约进行实证分析,结果发现,实际交易价格和理论价格有较大偏差,市场中存在大量套利机会,定价效率有待提高。为此可以考虑的建议包括允许融资融券交易、推出沪深300指数ETF等。     

Strategic currency hedging and global portfolio investments upside down

The literature on the convenience of currency hedging of international portfolio investments has not reached a final verdict. There are arguments for (Perold and Schulman [Perold, A.F. and Schulman, E.C. (1988). The free lunch in currency hedging: implications for investment policy and performance standards, Financial Analysts Journal, May/June Vol. 44, No. 3: 45-52]) and against (Froot [Froot, K. (1993). Currency hedging over long horizons. NBER Working Paper 4355.] and Campbell et al. [Campbell, J.Y., Viceira, L.M. and White, J.S. (2003). Foreign currency for long-term investors. The Economic Journal, Volume 113, Number 486, (March), pp. C1-C25(1)]). This paper analyzes the perspective of global investors based in emerging markets, for which hedging should imply increasing expected returns. The question thus is whether currency hedging is a “free lunch” in this case. No free lunch exists, as it turns out. Hard currencies act as natural hedges against global (and local) portfolio losses, since they tend to appreciate with respect to emerging market currencies when the world portfolio return is negative. Therefore, in this case currency hedging increases volatility—although also increasing expected returns. This result is likely to hold generally for relatively open economies with flexible exchange rate regimes.     

我国上市公司股票回购研究

股票回购在发达国家早已是一种非常成熟的资本运作方式,而在我国却是一项金融创新的举措。我国资本市场股票回购,虽刚刚起步,但亦日益成为人们关注的焦点。股票回购对我国资本市场具有现实意义。目前,我国上市公司股票回购的实践中存在较大的障碍和急待解决的问题,为此,必须采取相应措施。     

Efficiency in IPO Issuance Processes?

Is the online auction an efficient mechanism for pricing initial public offerings (IPOs)? Its intent was to minimize first day price surges in IPOs, which represented “money left on the table” for issuers. Evidence from Google's IPO suggests that the online auction process may not have minimized the first day price surge, since 82 percent of the IPOs issued in 2004 using the traditional process experienced less of an increase. Furthermore, a comparison of auction IPOs with traditional IPOs issued in the same year and in the same threedigit SIC code suggests that 44 percent of the auction IPOs have greater first day price surges than their traditional counterparts. A broader comparison of the pricing behavior of auction IPOs with traditional IPOs presents a mixed picture and suggests that the size of underwriter may be an important factor. The mispricing that occurs in auctions may be due to an informational asymmetry on the part of small investors. This informational gap could arise because small investors lack access to the information sources that institutional investors have or because companies are not required to provide detailed information in the online process, inasmuch as they don't undergo the rigorous scrutiny of investment banks in the traditional bookbuilding process. This informational gap may be alleviated by the SEC reforms of the “quiet period” and by the issuer providing more detailed information on the uses of the funds.     

OPTIONS AND EFFICIENCY IN MULTIDATE SECURITY MARKETS

This paper extends the work of Ross (1976; Q. J. Econ. (90)1, 75–89) to multidate security markets. First, we show that if a primitive security separates states at the terminal date, then there exist multiperiod European options on that security generating dynamically complete markets. Second, we show that if a primitive security conditionally separates states at the terminal date, then there exist multiperiod European options on that security generating generically dynamically complete markets provided that certain conditions hold. Third, we show that there are economies for which the minimum number of multiperiod European options on a primitive security generating generically dynamically complete markets is relatively large. Finally, we show that in these economies, a relatively small number of multiperiod European options on possibly different portfolio strategies of primitive securities generates generically dynamically complete markets.     

关于股权流通对价会计处理问题的探讨

股权流通对价在现有的会计制度下很难找到合理的处理方法。目前对股权分置,改革非流通股股东支付的股权流通对价的会计处理,应坚持股权流通对价、不让上市公司的所有者权益受损并与股权流通对价会计核算相一致的原则,在“长期股权投资”科目下增设“股权流通对价”明细科目,用来专门核算股权分置改革支付的股权流通对价的增减变化。     

隐含波动率的信息含量及其在我国的应用

国内现有关于波动率的研究多集中于时间序列模型,忽略了另一类预测波动率的方法即隐含波动率法。文章在回顾、评述了国内关于波动率的研究后,对国外关于隐含波动率的研究进行了梳理,为在我国大陆地区发展股指期权市场、通过提高期权市场的效率,以运用隐含波动率法更好地预测波动率提供了理论基础和政策建议。     

STABILITY OF THE UTILITY MAXIMIZATION PROBLEM WITH RANDOM ENDOWMENT IN INCOMPLETE MARKETS

We perform a stability analysis for the utility maximization problem in a general semimartingale model where both liquid and illiquid assets (random endowments) are present. Small misspecifications of preferences (as modeled via expected utility), as well as views of the world or the market model (as modeled via subjective probabilities) are considered. Simple sufficient conditions are given for the problem to be well posed, in the sense that the optimal wealth and the marginal utility‐based prices are continuous functionals of preferences and probabilistic views.