VIX option pricing

Substantial progress has been made in developing more realistic option pricing models for S&P 500 index (SPX) options. Empirically, however, it is not known whether and by how much each generalization of SPX price dynamics improves VIX option pricing. This article fills this gap by first deriving a VIX option model that reconciles the most general price processes of the SPX in the literature. The relative empirical performance of several models of distinct interest is examined. Our results show that state‐dependent price jumps and volatility jumps are important for pricing VIX options. © 2009 Wiley Periodicals, Inc. Jrl Fut Mark 29:523–543, 2009     

Effectiveness of promotional premiums: The moderating role of affective state in different contexts

This research explores the influence of affective state on ad and product judgments for advertising that features promotional offers of high and low price value. Consistent with expectations, Study 1 found that for happy participants, high‐price value premiums generated higher ad believability ratings, which in turn enhanced ad and brand attitudes. For sad participants, however, the positive effects of high‐price value premiums were attenuated due to message believability discounting. It is proposed that the moderating influence of affective state on responses to ads featuring premiums should be more likely to emerge when attention to premiums is high, as in situations where ads feature less important product attributes or when consumers plan to purchase a product. Study 2 found that the interaction between affective state and premium value was significant when ads featured less important product attributes, but not when they featured important product attributes. Study 3 found that the interaction was significant for participants who intended to purchase the product in the near future, but not for those who did not have purchase intentions. © 2009 Wiley Periodicals, Inc.     

Detecting log-periodicity in a regime-switching model of stock returns

Log-periodic precursors have been identified before most and perhaps all financial crashes of the Twentieth Century, but efforts to statistically validate the leading model of log-periodicity, the Johansen–Ledoit–Sornette (JLS) model, have generally failed. The main feature of this model is that log-harmonic fluctuations in financial prices are driven by similar fluctuations in expected daily returns. Here we search more broadly for evidence of any log-periodic variation in expected daily returns by estimating a regime-switching model of stock returns in which the mean return fluctuates between a high and a low value. We find such evidence prior to the two largest drawdowns in the S&P 500 since 1950. However, if we estimate a log-harmonic specification for the stock index for the same time periods, fixing the frequency and critical time according to the results of the regime-switching model, the parameters do not satisfy restrictions imposed by the JLS model.     

Translating corporate social performance into financial performance: exploring the moderating role of high-performance work practices

The purpose of this study is to examine the role of high-performance work practices (HPWPs) in helping to translate corporate social performance (CSP) into corporate financial performance (CFP). We employ arguments from the behavioral view of human resource management to highlight the vertical connection between a firm's proclivity for CSP and the management practices it adopts. Furthermore, we examine the moderating influence of HPWPs on the CSP–CFP linkage. Results suggest that HPWPs moderate the relationship between CSP and financial outcomes, and suggest that human resource practices may play an important role in enhancing a positive CSP–CFP relationship by helping to vertically align the behaviors of employees with the values and orientation of the organization.     

Taxation, growth, and the spirit of capitalism

This paper uses a general two-sector model of endogenous growth to examine how the spirit of capitalism affects the relation between public finance and growth. The spirit of capitalism is defined as acquisitive personal objectives. We find that if the spirit of capitalism is present, an increase in the share of government spending in output reduces the long-run growth rate. The negative relationship between fiscal spending and growth is consistent with empirical evidence.     

The relationship between stock returns and volatility in international stock markets

This study examines the relationship between expected stock returns and volatility in the 12 largest international stock markets during January 1980 to December 2001. Consistent with most previous studies, we find a positive but insignificant relationship during the sample period for the majority of the markets based on parametric EGARCH-M models. However, using a flexible semiparametric specification of conditional variance, we find evidence of a significant negative relationship between expected returns and volatility in 6 out of the 12 markets. The results lend some support to the recent claim [Bekaert, G., Wu, G., 2000. Asymmetric volatility and risk in equity markets. Review of Financial Studies 13, 1–42; Whitelaw, R., 2000. Stock market risk and return: an empirical equilibrium approach. Review of Financial Studies 13, 521–547] that stock market returns are negatively correlated with stock market volatility.     

基于自适应控制的区域生态经济协调发展构想

借鉴自适应控制理论的基本思想,建立了包括区域生态经济系统、协调发展评价系统、决策机构及调节系统4大基本要素组成的区域生态经济协调发展总体框架,它具有反馈作用,能根据区域生态经济系统的实际情况自动调节和控制其协调状况,并就此提出了区域生态经济管理的新理念,最后给出相应的建议。     

从对冲套利看可转债资产替换

在缺乏卖空机制的环境下，可转债相对价值的实现将主要来源于转债与股票之间的资产替换。尤其是在杠杆放大的资产替代策略下，可转债投资的盈利模式将出现根本性变化，股票价格的波动成为影响策略应用效果的最重要因素。本从对冲套利的角度，通过对等额和杠杆放大资产替换策略的模拟与分析，就资产替换策略的应用环境、杠杆选择与实证效果等问题进行了较为详尽的研究。     

Are nontariff measures and tariffs substitutes? Some panel data evidence

Using new estimates of ad valorem equivalent of nontariff measures (NTMs) over time, this paper examines NTMs and tariffs’ relationship for a sample of 70 economies for 4,949 products at the 6‐digit harmonized system level over the period 2003–2015. A panel data methodology models the lagged adjustment of NTMs to tariffs, consistent with a causal relationship. Trade policy substitution is found when the models are estimated in both levels and changes; with this holding for both OECD and non‐OECD countries, but not for the agriculture sector in OECD countries. Overall, there is a fairly complete substitution between policy instruments in absolute terms.