Valuation and incentive effects of hurdle rate executive stock options

Traditional executive stock options are often criticized for inherently weak links between pay and performance. Hurdle rate executive stock options represent a viable improvement. However, valuing these options presents extraordinary analytic difficulties. With a constant dividend yield the strike price becomes a path-dependent function of the stock price and exact analytic valuation is intractable. To solve this problem, we apply the Monte Carlo valuation approach developed by Longstaff and Schwartz (Rev Financ Stud 4:113–147, 2001) to estimate the value of path-dependent American options. We also extend the methodology to incorporate the theoretical framework by Ingersoll (J Bus 79:453–487, 2006) to permit subjective valuation influenced by an executive’s risk aversion.

基于信息不对称的信贷配给均衡模型研究

本文建立了竞争和信息不对称条件下,信贷市场的信贷配给均衡模型,模型表明在为不同的借款人提供由贷款利率和贷款额度组成的相同贷款合同的情况下,信贷市场存在稳定的单合同均衡,信贷市场的均衡在信贷配给点达到,因而从信息不对称和均衡的角度解释了信贷配给现象。     

股票增值权激励有效吗

股票增值权是上市公司对管理层实施激励的重要做法,在我国大型国有控股境外上市公司中普遍采用。本文以中国石化为研究对象,对实施股票增值权计划后的公司财务绩效、治理机制与管理层代理成本、股票市场反应等作了实证检验。本文认为,股票增值权计划对公司财务绩效提升、治理机制改善具有一定的积极正面效应;股票增值权在等待期结束后的开始行权年度激励效果最大;股票市场对股票增值权的行权存在着过度反应。最后本文提出了改进股票增值权激励的政策建议。     

Is the Abnormal Post-IPO Underperformance Really Abnormal? The Evidence from CEE Emerging Markets

Using sorting procedures and cross-sectional tests, we investigate the long-run post-IPO performance and its sources in the Central and Eastern European (CEE) markets. We examine over 1100 stocks from 11 CEE countries for the period 2002–2014. We find that “old stocks” perform significantly better than “young stocks”, but only when the market beta is the sole risk factor considered. After accounting for the size and value effects, the IPO firms perform neither better nor worse than non-issuing companies. The sources of the initial low B/M ratios of debuting companies may lie in time-varying financial quality. The market newcomers are financially healthier than their older counterparts. However, over 2–5 years the fundamentals deteriorate and the financial standing regresses to the mean.     

Do stock prices influence corporate decisions? Evidence from the technology bubble

We study the capital investment, stock issuance, and cash savings behavior of non-tech manufacturers (old economy firms) during the 1990s technology bubble. Our empirical results show that high stock prices affect corporate policies because they relax financing constraints. During the tech bubble, constrained non-tech firms' investment responded strongly to “high stock prices” (specifically, the component of price that is not captured by fundamentals). They also issued stock in response to that overvaluation effect, saving part of the proceeds in their cash accounts. We find no such patterns for unconstrained non-tech firms, nor for tech firms. Our findings are not consistent with the notion that managers systematically issue overvalued stocks and invest in ways that transfer wealth from new to old shareholders. More broadly, they suggest that what appears to be overvaluation in one sector of the economy may have positive externalities for other sectors.     

股票价格具有货币政策指示器功能吗——来自中国1997～2006年的经验证据

本文运用VAR模型考察了以股票价格为代表的金融资产价格对我国通货膨胀的影响。实证分析表明,我国股票价格的变动对产出缺口存在一定的正向影响,但是这种影响不太稳定,说明我国股票价格通过总需求渠道对未来通货膨胀产生的影响比较微弱。同时,我国股票价格的变动能引起未来CPI和WPI的同向变化,尤其与CPI的关系非常稳定,说明股票价格在一定程度上包含了我国未来通货膨胀的信息。因此,我国股票价格可以作为一个帮助判断未来经济走势和通货膨胀变动趋势的货币政策指示器。