The Influence of Different Investment Horizons on Risk Behavior

For longer investment periods, investment consultants usually recommend a larger proportion of risky assets for investor portfolios. We examine the effect of different investment horizons on investors' risk behavior. We are interested both in participants' risk perceptions and in their asset allocation behavior. We find significant underestimations of long-term risks, which lead to a higher proportion of risky assets in the long-term portfolios. Our data show that the belief in mean reversion is a potential explanation for this behavior.     

Portfolio Theory and Foreign Investment ? The Role of Non-Marketed Assets

Far from thinking the extent of foreign investment in Australia is large, economists ought perhaps be surprised that the extent is not greater. Certainly, portfolio diversification theory would seem to predict Australians would own a small share of their marketable wealth in Australian marketed assets. We show that when domestic residents in a small open economy possess non-marketable wealth (so that securities markets are not complete), domestic marketed assets may be disproportionately demanded by residents to hedge their non-marketed risks.     

Search and endogenous concentration of liquidity in asset markets

We develop a search-based model of asset trading, in which investors of different horizons can invest in two assets with identical payoffs. The asset markets are partially segmented: buyers can search for only one asset, but can decide which one. We show the existence of a “clientele’’ equilibrium where all short-horizon investors search for the same asset. This asset has more buyers and sellers, lower search times, and trades at a higher price relative to its identical-payoff counterpart. The clientele equilibrium dominates the one where all investor types split equally across assets, implying that the concentration of liquidity is socially desirable.     

Collateral fluctuations in a monetary economy

This paper studies economy-wide fluctuations that occur endogenously in the presence of monetary and real assets. Using a standard monetary search model, we consider an economy in which agents can increase consumption, over and above what their liquid monetary asset holdings would allow, pledging real assets as collateral for monetary loans. It is shown that, if the liquidation value of real assets is below full market value, a stable cyclical equilibrium can emerge in consumption and capital around the unstable steady state. We also provide conditions for the existence of cycles of higher order, chaos and sunspot equilibria.     

Fire sales by euro area banks and funds: What is their asset price impact?

The assets under management of investment funds have soared in recent years, triggering a debate on their possible implications for financial stability. We contribute to this debate assessing the asset price impact of fire sales in a novel partial equilibrium model of euro area funds and banks calibrated over the period between 2008 and 2017. An initial shock to yields causes funds to sell assets to address investor redemptions, while both banks and funds sell assets to keep their leverage constant. These fire sales generate second-round price effects. We find that the potential losses due to the price impact of fire sales have decreased over time for the system. The contribution of funds to this impact is lower than that of banks. However, funds’ relative contribution has risen due to their increased assets under management and banks’ lower leverage and rebalancing towards loans. Should this trend continue, funds will become an increasingly important source of systemic risk.     

基于投资者异质性信念的证券定价模型——对我国股票市场价格的实证检验

投资者异质性信念的相互作用影响着证券价格,证券市场上的各种证券需求与供给关系,往往表现为投资者各种不同信念的对抗和交融。本文以悲观信念（看多）和乐观信念（看空）之间的相互作用为例,研究了异质性信念对资产均衡定价的影响,并以我国股票市场的机构投资者信念为对象进行了实证检验,得出我国股票市场投资者信念与证券价格相互作用的结论。本文的建议是在投资过程中,准确分析市场中投资者的异质性信念结构,尤其是资金雄厚的机构投资者的信念结构至关重要。     

Real assets, financial assets, liquidity and the lemon problem

Return obtained by diversification is based on average quality. Similarly, under asymmetric information, the price at which an asset can be sold reflects the average quality of assets. Therefore, 4under some conditions, sale of an asset under asymmetric information is a useful alternative to diversification. This idea is developed with a model that incorporates a liquidity shock. One key result is that investment in real assets is higher under asymmetric information than under symmetric information. The model can explain why the ratio of real assets to financial assets is higher in emerging economies than in developed countries.     

Should we write prenuptial contracts?

A successful marriage requires for both parties to make investments in their relationship and marital assets. How such assets would be divided if and when the parties divorce is an important factor determining each party's ex ante investment incentives. Using the incomplete contracting approach, we characterize the optimal asset division rule, one that provides the parties with the best investment incentives. We then discuss the circumstances under which the spouses would agree, in equilibrium, to contract out state-imposed rules governing the allocation of marital assets upon divorce. We conclude by exploring the implications of our results in the context of various asset division rules currently discussed by policy-makers.     

Equilibrium interest rate and liquidity premium with transaction costs

Summary. In this article we study the effects of transaction costs on asset prices. We assume an overlapping generations economy with two riskless assets. The first asset is liquid while the second asset carries proportional transaction costs. We show that agents buy the liquid asset for short-term investment and the illiquid asset for long-term investment. When transaction costs increase, the price of the liquid asset increases. The price of the illiquid asset decreases if the asset is in small supply, but may increase if the supply is large. These results have implications for the effects of transaction taxes and commission deregulation. Received: December 5, 1997; revised version: March 19, 1998     

The impact of financial crises and tolerance for uncertainty

Financial crises can have severe negative effects on investment. One reason for this is that financial crises increase uncertainty, increasing the real option value of delaying investment. In this paper, we show that the negative effect of crises on investment differs significantly across countries: in countries with low tolerance for uncertainty, the negative effect is strong. The negative effect is absent in countries that are more tolerant of uncertainty. These findings are similar across different types of financial crisis; they vary as predicted across type of investor, asset and industry; and they are not driven by uncertainty-averse countries adopting more rigid institutions.     

房屋拆迁与家庭金融风险资产投资

文章基于心理账户和资源保存理论,利用2011年中国家庭金融调查数据,考察了房屋拆迁对家庭金融风险资产投资的影响及其机制.研究结果表明,房屋拆迁显著增强了家庭投资金融风险资产的意愿,提高了家庭在金融风险资产上的投资比重.财富损失预期在房屋拆迁影响家庭金融风险资产投资中起了显著的中介作用,而这一中介效应受到社会保险的正向调节.文章从经济学、管理学和心理学相融合的视角进行分析,为人类经济行为和结果提供了新见解;同时,研究结论对拓宽居民家庭投资渠道、深化金融体制改革和促进经济增长具有重要的参考价值和指导意义.     

OPTIMAL INTERNATIONAL ASSET ALLOCATION WITH TIME-VARYING RISK

This paper examines the optimal allocation each period of an internationally diversified portfolio from the different points of view of a UK and a US investor. We find that investor location affects optimal asset allocation. The presence of exchange rate risk causes the markets to appear not fully integrated and creates a preference for home assets. Domestic equity is the dominant asset in the optimal portfolio for both investors, but the US investor bears less risk than the UK investor, and holds less foreign equity – 20% compared with 25%. Survey evidence indicates actual shares are 6% and 18%, respectively, making the home‐bias puzzle more acute for US than UK investors. There would seem to be more potential gains from increased international diversification for the US than the UK investor.     

Security Innovation on Several Assets Under Asymmetric Information

The paper examines the optimal innovation of securities by an issuer who is endowed with several risky assets and private information on one of the assets. Assuming that the degree of asymmetric information between the issuer and the outside investor is large, we show that the issuer restricts the number of securities that he creates. We also show that the payoff of the security created by the issuer is not closely correlated, and is sometimes completely uncorrelated, with the payoff of the asset that is subject to the asymmetric information, depending on the hedging needs and the accuracy of information.
JEL Classification Numbers: D52, D82, G20.     

考虑基准资产的动态投资组合选取

职业基金经理的目标经常是希望自己的投资组合以稳定的表现能够超越所某一基准资产或组合。因此本文给出一个考虑基准资产的动态均值——方差投资组合选取模型。假设状态之间的转移遵循马氏过程,给定状态转移矩阵,可以得到对风险资产最优投入的解析表达式。此表达式表明对风险资产的投入由三项构成,前两项是不考虑基准资产时对风险资产的投入,最后一项与基准资产有关;在基准资产上的权重由基准资产收益的大小来决定,与积极投资组合管理者的风险厌恶程度无关;随着风险厌恶程度的增加,管理者会减少在风险资产上的投入。数值分析显示考虑基准资产的投资组合是一个积极的投资组合。     

不完全市场、惩罚函数及一般均衡

不完全市场一般均衡分析框架使我们更加了解现实金融市场中资产价格的形成机制,使用带有惩罚函数的同伦跟踪算法计算不完全市场经济一般均衡模型均衡(GEI),有效地克服了由于市场不完全引起的消费者资产组合无限扩张和需求函数不连续等传统GEI模型计算所固有的困难.     

Multi-period portfolio optimization under possibility measures

A single-period portfolio selection theory provides optimal tradeoff between the mean and the variance of the portfolio return for a future period. However, in a real investment process, the investment horizon is usually multi-period and the investor needs to rebalance his position from time to time. Hence it is natural to extend the single-period fuzzy portfolio selection to the multi-period case based on the possibility theory. In this paper, we propose the possibilistic expected value and variance for the terminal wealth with fuzzy forms after T periods by using the central value operator. Classes of multi-period possibilistic mean-variance models are formulated originally under the assumption that the proceeds of risky assets are fuzzy variables. Besides, we apply a particle swarm optimization algorithm to solve the proposed multi-period fuzzy portfolio selection models. A numerical example is given to illustrate the performance of the proposed models and algorithm.     

Capital gains taxation in an economy with an ‘Austrian sector’

This paper examines the effects of a proportional capital gains in an economy with an Austrian sector (with wine and trees) and an ordinary sector. We analyze the effect of capital gains taxation (on both an accrual and a realization basis) on the efficiency with which resources are used within the Austrian sector. Since time is the only input which can be varied in the Austrian sector, this amounts to looking at the effect of capital gains taxation on the harvesting time or selling time of assets. Accrual taxation decreases the selling time of Austrian assets. Realization taxation decreases the selling time of some Austrian assets and leaves it unchanged for others. Inflation further reduces the selling time of assets taxed on an accrual basis; often, but not always, inflation increases the selling time of Austrian assets taxed on a realization basis. We also examine the effect of the special tax treatment of capital gains at death and find that the current U.S. tax system, under which capital gains taxes are waived at death, encourages investors to hold assets longer.In contrast to these results — which suggest that the capital gains tax can reduce the holding period of an asset — we show that there is a sense in which such taxes (at least when levied on a realization basis) discourage transactions and increase holding periods. It is never profitable to change the ownership of an Austrian asset between the time of the original constraint and the ultimate harvesting of the asset for final use.Capital gains taxation diverts resources from the Austrian sector to the ordinary sector. The effects on the efficiency of the allocation of investment between sectors are complicated and not easy to summarize.     

Globally evolutionarily stable portfolio rules

The paper examines a dynamic model of a financial market with endogenous asset prices determined by short-run equilibrium of supply and demand. Assets pay dividends that are partially consumed and partially reinvested. The traders use fixed-mix investment strategies (portfolio rules), distributing their wealth between assets in fixed proportions. Our main goal is to identify globally evolutionarily stable strategies, allowing an investor to “survive,” i.e., to accumulate in the long run a positive share of market wealth, regardless of the initial state of the market. It is shown that there is a unique portfolio rule with this property—an analogue of the famous Kelly rule of “betting your beliefs.” A game theoretic interpretation of this result is given.     

Winning or losing in investor‐to‐state dispute resolution: The role of arbitrator bias and experience

When an investor sues a state for alleged breaches of its obligations under an investment treaty or a trade agreement with investment provisions, all that should matter for who wins the case are the merits of the claim itself. Alas, investor‐to‐state dispute settlement (ISDS) does not take place in a vacuum. Such cases are decided by a tribunal typically consisting of three arbitrators, one each nominated by the two parties while the president is mutually agreed upon. We demonstrate that the kind of involvement of these arbitrators in previous ISDS cases matters for the case under dispute. Specifically, we show that what we label the presidents' pro‐investor appointment bias—the number of times they have previously been nominated by an investor minus the number of times they have represented respondent states—raises the likelihood that an investor wins an ISDS case. The same holds for the pro‐investor appointment bias of state‐appointed arbitrators. Given the president's crucial role, the main implication of our findings is that presidents should be drawn from among those who have not systematically represented more one side than the other in previous cases.     

市场势力、资产专用性与企业研发投入:来自卖方与买方双维度考量的实证研究

在纵向关联市场中,市场势力和资产专用性是企业创新研发投入的重要影响因素。基于2012-2016年我国121家医药制造业上市公司微观数据,从买方与卖方双重视角探究市场势力、资产专用性与企业创新研发投入的关系。结果表明：买方势力、卖方势力与企业研发投入之间均呈现“倒U型”关系,即当买卖双方市场势力较小时,市场势力对企业研发投入的正向“激励效应”占主导地位;在市场势力超过一定水平后,市场势力对企业研发投入的负向“挤出效应”占主导地位,且相比于专用性资产投资强度较低的医药企业而言,卖方势力与买方势力对具有高资产专用性强度的医药企业研发投入所产生的“倒U型”影响更为显著。