General equilibrium pricing of nonredundant forward contracts

We derive the general equilibrium of a dynamic financial market in which the investors' opportunity set includes nonredundant forward contracts. We show that Breeden's (1979) consumption‐based CAPM equation for forward contracts contains an extra term relative to that for cash assets. We name this term a strategy risk premium. It compensates investors for the (systematic) risk that stems from their very portfolio strategies when the latter involve nonredundant forward contracts. We also show that Merton's (1973) multibeta intertemporal CAPM must be amended for forward contracts to exhibit adjusted risk premia for the market portfolio and all relevant state variables, as opposed to the usual risk premia for cash assets. Our results are shown not to depend on the usual cash‐and‐carry relationship, which, in general, does not hold. We, nevertheless, provide a well‐known special case where it does hold, albeit not grounded on the usual no‐arbitrage argument. © 2003 Wiley Periodicals, Inc. Jrl Fut Mark 23:817–840, 2003     

Understanding the Formation of Consumers' Stock Market Expectations

To understand consumers' investment decisions, national surveys such as the Health and Retirement Study elicit consumers' expectations about stock market movements. Analyses of stock market expectations show substantial heterogeneity between consumers. It is commonly speculated that this heterogeneity reflects variations in the beliefs underlying consumers' stock market expectations, that is, their “mental models.” In an online survey of American adults, we find that consumers think about different economic and political issues when generating stock market expectations for the next year. Regardless of the specific issues on which consumers focused, however, their assessments of the issues seemed to reflect a single underlying perception of changes in economic conditions. Regression analyses show that variation in stock market expectations is related to consumers' overall assessments of economic developments. We discuss the implications of these results for economic surveys and investment communications.     

MEAN VARIANCE PREFERENCES, EXPECTATIONS FORMATION, AND THE DYNAMICS OF RANDOM ASSET PRICES

This paper analyzes the dynamics of an explicit random process of prices and price expectations of finitely many assets in an economy with overlapping generations of heterogeneous consumers. They maximize expected utility with respect to subjective transition probabilities defined by Markov kernels which describe the forecasting behavior of agents. Given such forecasting rules (predictors) and an exogenous process of dividends, the evolution of equilibrium asset prices and expectations is described by a random dynamical system in the sense of Arnold (1998) . The paper investigates the long-run behavior (stationary solutions) by proving the existence and stability of random fixed points for mean-variance preferences under various predictors, including unbiased predictions, and adaptive, as well as OLS forecasting. An explicit characterization of rational expectations solutions is given, providing a full dynamic characterization of asset price processes for the classical CAPM in the case of stationary OLG economies. Numerical simulations are used to compare the performance of the different predictors under an AR(1) dividend process.     

An alternative perspective on the relationship between downside beta and CAPM beta

In this paper we derive relationships between the CAPM beta and three measures of downside risk discussed in the literature. The relationships are derived assuming data generating processes in the mean-variance and mean-semivariance frameworks. In a sample of emerging market index returns we highlight that the association between the CAPM beta and downside beta depends on the standard deviation, skewness and kurtosis of the market portfolio return distribution. Therefore choice of risk measure may depend on the market being investigated. We argue that the derived relationships may also help explain anomalous results in empirical investigations.     

产业政策扶持对企业金融资产配置——基于“五年规划”变更的自然实验

以产业政策“五年规划”的变更构建双重差分与中介效应检验，分析了政策扶持对企业“主观投资意愿”和“客观投资机会”的双重影响，以及在两种影响的共振作用下，如何进一步影响企业金融资产配置决策的微观逻辑。研究发现：产业政策扶持对企业金融资产配置具有显著促进作用。一方面，产业政策扶持不仅会通过融资约束缓解效应提升企业投资意愿，还会通过庇护效应提高企业风险容忍度、强化风险承担，从而进一步提升“主观投资意愿”。另一方面，政策扶持引发投资潮涌会恶化市场竞争、政策前瞻性及其社会价值性，又对企业短期经济价值产生抑制，从而导致企业“客观投资机会”下滑。最终，企业在客观投资不确定性加剧而主观投资意愿上升的共振作用下选择转向具有替代性的金融资产投资。异质性方面，主业投资机会、主业经营收益率和主业经营风险越高的企业增加金融资产投资的意愿更弱，说明企业进行金融资产配置更像是锦上添花，而非根本上的“脱实向虚”。     

证券投资者行为及投资策略研究

行为金融学注重研究证券投资者在投资决策时的心理特征,其对投资者的有限理性决策假设使其能更好地解释许多证券市场异常现象。本文从行为金融学视角对证券投资者心理与行为特征进行分析,我国证券投资者的投资行为有逆向投资策略,惯性投资策略,小盘股投资策略。     

封闭式基金投资价值的均值半标准差及其综合收益率分析

本文认为，在不允许卖空的证券市场中，证券收益率的向上波动是大多数投资者的行为偏好所致，以证券收益率的方差作为投资风险测度的马克维茨（Markowitz）模型并不适合这一市场类型。文章指出，依据统计学半标准差的方法可以区分投资过程的上方风险和下方风险；同时，如果考虑证券收益率的均值，则可以运用行为均值半标准差综合收益率方法，探索出一种新的封闭式基金投资价值的分析方法。本文的分析可视为对封闭式基金投资价值之评判的一种新的理解。     

我国开放式基金启发式偏差行为及其对市场影响分析

启发式偏差是指投资者往往依据"经验法则"来进行投资决策,是行为金融学所揭示的一种重要的投资者非理性行为,该行为最终会导致金融资产的错误定价和金融资源的不合理配置。我国的开放式基金在投资心理上具有锚定启发式偏差,并且此种投资心理会对当期市场走势产生显著的正向影响,而对未来市场走势产生显著的负向影响。开放式基金的这种非理性投资心理所引致的投资行为产生的短期影响大于其在中长期产生的影响。     

Does corporate governance risk at home affect investment choices abroad?

Disparity between control and ownership rights gives rise to the risk of tunneling by the controlling shareholder, and is prevalent in many emerging market economies and present in some developed countries. At the same time, international investors come from different countries whose home markets are characterized by varying degrees of control–ownership disparity. This paper studies whether this difference in investors' home countries affects their portfolio choice in an emerging market. It combines two unique data sets on ownership and control in business groups, and investor-stock level foreign investment in Korea. A key finding is that investors from low-disparity countries disfavor high-disparity stocks in Korea, but investors from high-disparity countries are indifferent. Moreover, investors from low-disparity countries became averse to disparity only after the Asian financial crisis. These results suggest that the nature of corporate governance in international investors' home countries affects their portfolio choice abroad, and therefore these investors should not be lumped together in the analyses of their portfolio choice.     

ARROW–DEBREU EQUILIBRIA FOR RANK‐DEPENDENT UTILITIES

We provide conditions on a one‐period‐two‐date pure exchange economy with rank‐dependent utility agents under which Arrow–Debreu equilibria exist. When such an equilibrium exists, we show that the state‐price density is a weighted marginal rate of intertemporal substitution of a representative agent, where the weight depends on the differential of the probability weighting function. Based on the result, we find that asset prices depend upon agents' subjective beliefs regarding overall consumption growth, and we offer a direction for possible resolution of the equity premium puzzle.     

Endogenous Random Asset Prices in Overlapping Generations Economies

This paper derives a general explicit sequential asset price process for an economy with overlapping generations of consumers. They maximize expected utility with respect to subjective transition probabilities given by Markov kernels. The process is determined primarily by the interaction of exogenous random dividends and the characteristics of consumers, given by arbitrary preferences and expectations, yielding an explicit random dynamical system with expectations feedback. The paper studies asset prices and equity premia for a parametrized class of examples with CARA utilities and exponential distributions. It provides a complete analysis of the role of risk aversion and of subjective as well as rational beliefs.     

When in peril, retrench: Testing the portfolio channel of contagion

The impact of past gains and losses on international investors' risk aversion is an important factor in the propagation of financial shocks across countries. We first present a stylized model illustrating how changes in investors' risk aversion affect portfolio decisions and stock prices. We then examine empirically the behavior of international mutual funds. When funds' returns are below average, they reduce their exposure to countries in which they were overweight and vice versa. An index of “financial interdependence” that reflects the extent to which countries share overexposed funds helps explain the pattern of stock market comovement across countries and the pattern of contagion during crises.     

The formation of forward freight agreement rates in dry bulk shipping: Spot rates,risk premia,and heterogeneous expectations

We examine the formation of forward rates in the dry bulk shipping industry. We illustrate that the bulk of basis volatility can be attributed to expectations about future physical market conditions rather than expectations about future risk premia. However, there exists significant predictability of risk premia by both price-based signals and economic variables. To explain this finding, we develop a dynamic asset pricing framework where, apart from having different objective functions, agents might also differ in the way they form expectations about future market conditions. Accordingly, we argue that the average investor should hold “near-rational” but slightly contrarian beliefs.     

机构投资者实地调研与投资-股价敏感性——基于管理层学习效应视角

文章利用2013-2018年深圳证券交易所上市公司的数据,实证检验了机构投资者实地调研对投资-股价敏感性的影响。研究发现机构投资者实地调研提高了公司投资-股价敏感性,在股价信息含量越高时,机构投资者实地调研对公司投资-股价敏感性的影响越显著,表明投资者实地调研通过信息反馈效应中的“挤入渠道”增强了管理层向市场的学习行为,机构投资者实地调研对投资-股价敏感性的影响在管理层持股的上市公司中更为显著。研究结果表明机构投资者实地调研可帮助上市公司管理层获取更多决策有用信息,提升资源配置效率,对于完善机构投资者调研制度、提升我国资本市场信息效率具有一定的实践价值。     

浅谈我国上市公司会计信息披露中存在的问题及对策

上市公司会计信息披露是资本市场运行的基础,如果会计信息披露不真实,就会扭曲股票的价值,扰乱资本市场秩序,损害投资者的利益,挫伤股民的投资积极性。因此,会计信息披露对资本市场非常重要。     

一个包含异质信念的GARCH模型

文章利用信息交易量得到投资者异质信念的代理变量,给出一个包含投资者异质信念的GARCH（1,1）模型。该模型的估计结果表明,上海证券市场与纽约证券市场上都存在明显的投资者异质信念现象,且异质信念显著放大了中、美证券市场上的投资风险。     

Short sales restrictions and the security market line

A reformulation of the CAPM is derived by taking account of short-sales restrictions on both risky and safe assets. The induced security market line is shown to be consistent with the empirical security market lines of various researchers.     

股票投资价值灰色马尔可夫预测

传统的资产估价理论,即“稳固基础理论”和“空中楼阁理论”使人们认识到,股票的内在价值与投资者的心理价值都对投资行为起着重要的作用,但对于一般投资者来说,如何在信息不完全的条件下得到股票的投资价值呢?灰色马尔可夫预测方法在股票价格预测中应用理论基础,运用修正方法,能为投资者的投资决策行为提供一定的指导。     

Noise Trader Model of Agricultural Product Prices： Evidence from the Chinese Garlic Market

This paper explores the determinants of the abnormal and volatile fluctuations of China＇s agricultural product prices in recent years by examining the trading behavior of traders, especially that of irrational noise traders. We present an overlapping generations model of the garlic market in which noise traders with erroneous beliefs influence prices. Noise traders＇ beliefs create a risk in the price of agricultural products that deters rational arbitrageurs from aggressively betting against them through changing supplies in a way that enables prices to diverge significantly from fundamental values even in the absence of fundamental risk. We also show that asymmetry of supply information, low price elasticity of demand, speculative capital inflows, restricted distribution channels, distorted wholesale markets from the perspective of market mechanisms and low risk aversion, biased self-attribution, and projection bias from the perspective of investor psychology, all influence expectations of investors and increase the volatility of agricultural product prices.     

Wage bargaining and multinational firms

We set up a general equilibrium model with heterogeneous firms to study the interaction between wage bargaining and foreign direct investment. Thereby, we highlight the incentives of firms to invest abroad in order to improve their bargaining position vis-á-vis local unions and we show how changes in the bargaining power of unions affect the share of multinational firms in an open economy. In addition, taking into account this relationship between wage bargaining and foreign direct investment, our analysis provides novel insights on how labor income and the unemployment rate adjust to economic integration and how changes in the bargaining power of unions affect these two labor market variables.