Oil price and reserve location—Effects on oil and gas sector returns

We provide market evidence of the effects of reserve location on oil and gas (O&G) company returns. Prior studies have shown that commodity sector stock returns are affected by commodity prices. In a new contribution to natural resource valuation literature, returns for 51 O&G companies are shown to be directly and negatively affected by exposures to (location specific) progressive fiscal terms. We add a reserve location proxy—‘R’—to the Fama–French framework; differentiating between companies' performances based on the proportion of oilfield assets subject to progressive tax terms. Companies with oilfield assets owned under progressive production sharing fiscal terms are unable to capture the benefits of oil price increases—and as result significantly under-perform companies with concession asset holdings.     

Target firms’ characteristics and the effects of sovereign wealth funds’ investments: Does cultural context of SWFs matter?

This paper investigates whether the determinants and effects of sovereign wealth fund (SWF) investments vary across SWFs' countries of origin. We classify SWFs based on the national culture of their home countries. On the side of investment motives, our findings show different nuances across SWFs classified by cultural origins. Furthermore, the post-investment approach varies among SWFs distinguished on the basis of the cultural traits of their home country. As a whole, these findings confirm that the heterogeneity of the cultural origin of SWFs matters in terms of selection criteria and effects.     

Difference in interim performance and risk taking with short-sale constraints

Absent much theory, empirical works often rely on the following informal reasoning when looking for evidence of a mutual fund tournament: If there is a tournament, interim winners have incentives to decrease their portfolio volatility as they attempt to protect their lead, while interim losers are expected to increase their volatility so as to catch up with winners. We consider a rational model of a mutual fund tournament in the presence of short-sale constraints and find the opposite: Interim winners choose more volatile portfolios in equilibrium than interim losers. Several empirical works present evidence consistent with our model. However, based on the above informal argument, they appear to conclude against the tournament behavior. We argue that this conclusion is unwarranted. We also demonstrate that tournament incentives lead to differences in interim performance for otherwise identical managers and that mid-year trading volume is inversely related to mid-year stock return.     

On the nature of mean-variance spanning

Asset spanning tests are very useful tools for the determination of which asset classes belong to an investor's portfolio. There are numerous applications of such tools in the finance literature. What is not so obvious is the proper decision an investor should make if the extra asset classes are spanned by some existing assets. Should the investor make a conscious decision not to invest in them as they add no value? Should the investor invest in them anyway as they do no harm? This study provides an analytical solution to the puzzle and also offers an economic rationale.     

基于城乡消费差异的农民工市民化动态分析

运用VAR脉冲响应函数和方差分解方法,实证考量1978～2010年间消费对农民工市民化的动态影响效应。结果表明:消费对农民工市民化进程具有较大影响力;农民工与城市居民消费差距的缩小对市民化率的增长具有促进作用,正向冲击效应持续时间长且强度大。农民工与城市居民收入差距的变化对农民工市民化率有正负双向冲击,短期对农民工市民化有负向冲击效应,但随着时间的推移,正向效应逐渐显著。鉴于此,关注农民工与城市居民消费差异,扩大农民工消费对中国经济建设和城镇化进程具有重要意义。     

The effect of regulation on optimal corporate pension risk

We study firms' pension prefunding and portfolio allocation choices in a model in which firms trade off the need to compensate workers for the financial risk in their pension benefit against the cost advantage that may be gained by exploiting underpriced pension insurance. In the absence of pension insurance, the firm minimizes costs by rendering promised benefits free of risk to workers, who are assumed to be unable to hedge firm-specific risk. Various forms of government intervention, such as benefit guarantees, can alter this outcome dramatically by providing the firm with an incentive to shift risk to other parties. In this case, we find that the firm's decisions depend on, among other influences, the degree of insurance mispricing, the amount of guaranteed benefits, the stringency of minimum funding requirements, and the costs of financial distress.     

Do venture capitalists imitate portfolio size?

Venture capitalists face the challenge of determining how many entrepreneurial ventures they should invest in. Kanniainen and Keuschnigg (J Corp Finance 9:521–534, 2003) develop a theoretical model based on economic factors that shows how a venture capital fund should set its portfolio size in order to achieve optimal returns. Determining the required economic inputs to this model is difficult in practice however, given the informational asymmetries, uncertainties and ambiguities present in the decision-making environment of venture capitalists. Hence, we contend that general partners of venture capital funds also use their prior venture capital fund management experience, which we refer to as social capital, to overcome the difficulties they face in solving the above optimization problem. Our results support our hypotheses that portfolio size is explained by the interplay of economic and social factors.      

A Bayesian analysis of a variance decomposition for stock returns

We apply Bayesian methods to study a common vector autoregression (VAR)-based approach for decomposing the variance of excess stock returns into components reflecting news about future excess stock returns, future real interest rates, and future dividends. We develop a new prior elicitation strategy, which involves expressing beliefs about the components of the variance decomposition. Previous Bayesian work elicited priors from the difficult-to-interpret parameters of the VAR. With a commonly used data set, we find that the posterior standard deviations for the variance decomposition based on these previously used priors, including “non-informative” limiting cases, are much larger than classical standard errors based on asymptotic approximations. Therefore, the non-informative researcher remains relatively uninformed about the variance decomposition after observing the data. We show the large posterior standard deviations arise because the “non-informative” prior is implicitly very informative in a highly undesirable way. However, reasonably informative priors using our elicitation method allow for much more precise inference about components of the variance decomposition.     

The linkage between the US and Korean stock markets: the case of NASDAQ, KOSDAQ, and the semiconductor stocks

This paper examines the interrelationship between stock prices in the US and Korea by applying the vector autoregression (VAR) model to the daily stock prices at three different level of aggregation – the national aggregate index level, the high-tech industry level and the semiconductor firm level – for the period of July 1996 through February 2001. The major findings of this study are as follows. First, the US stock market plays a leading role over the Korean market at every level of aggregation. The reverse direction of influence, from Korea to the US, was found to be minimal. Second, the evidence also suggests that the speed of transmission of innovation from the US to Korea is swift and finished for the most part within a 24-h period, although it takes three or four days to complete the whole process. Third, the influence of the US stock prices on Korean stock prices, which is measured by the innovation transmission using the impulse–response function (IRF) analysis, seems to be somewhat stronger in the composite national stock price indices and the tech-laden indices than high-tech firms. Fourth, at the firm level, the influence of Micron Technology on the leading semiconductor manufacturers in Korea is shown to be strong and persistent by passing about 34 percent of its innovations to the Korean firms within the three-day period. The impact of IBM and Intel on the Korean chip makers seems to be relatively smaller. Finally, stock prices in Korea, national stock price indices and individual high-tech stocks alike, have become much more responsive to innovations in the US stock prices after the 1997 financial crisis. The implications of the main findings in this paper are also discussed.