“偿二代”监管体系下寿险公司风险管理研究

随着经济发展进入新常态,已有的监管体系"偿一代"已无法适应当前以及未来寿险业风险管理的要求.2016年,以全面风险管理为导向的"偿二代"正式实施,给我国寿险公司的风险管理带来了深刻影响.为此,本文从负债端、资产端和公司风险管理三个方面分析"偿二代"对寿险公司风险管理的作用路径及影响.研究发现:在"偿二代"下寿险公司在负债端的风险管理重点应在于着力优化并调整产品结构,使得长期期缴业务成为核心;在资产端的风险管理重点应在于提升权益投资和另类投资比例;在公司的风险管理上应逐步加强完善风险管理框架,不断提高全面风险管理能力.     

Corporate fraud and investment distortions in efficient capital markets

Inefficient investment allocation induced by corporate fraud, where informed insiders strategically manipulate outside investors' beliefs, has been endemic historically and has recently attracted much attention. We reconcile corporate fraud and investment distortions with efficient capital markets, building on shareholder‐manager agency conflicts and investment renegotiation in active takeover markets. Because investments that are ex post inefficient are not renegotiation proof, the optimal renegotiation‐proof contract induces overstatements by managers, accompanied by overinvestment in low return states and underinvestment in high return states by rational investors. Our framework also helps explain why easy access to external capital appears to facilitate corporate fraud.     

基础设施投资、教育支出与经济增长——基础设施投资“挤出效应”的实证分析

把基础设施投资和教育支出放入到理论模型中进行分析,得出基础设施投资和教育支出影响经济增长的理论假定,来判断我国基础设施投资是否存在对人力资本积累的"挤出效应",以及这个"挤出效应"是否阻碍经济持续有效增长;利用1980～2010年的数据通过误差修正模型进行验证,实证结果显示:基础设施投资已经对人力资本积累产生了"挤出效应";人力资本投资显示出比基础设施投资更强的对经济增长的推动力;基础设施投资对经济的影响存在明显的地区差异性。     

投资项目风险、外部性与投资资本内部定价

从业绩评价角度,以委托代理理论作为分析工具,研究投资项目风险、外部性对投资资本内部定价的影响。研究结论表明:投资资本的最优内部"价格"与用于决策的企业资本成本一般不同,投资项目风险、外部性对其有重要影响;当平均投资收益率等于边际投资收益率时,只有投资项目风险对投资资本内部定价有影响;投资失败的赔偿制相比有限责任制,会减弱投资项目风险和外部性对投资资本"定价"的影响。这一研究为正确地制定投资资本的内部价格和合理地评价投资业绩提供了理论基础。     

Life Annuity Insurance Versus Self-Annuitization: An Analysis From the Perspective of the Family

When comparing investment in an immediate life annuity with a payout-equivalent investment fund decumulation plan (self-annuitization), previous research focused on shortfall probabilities of self-annuitization. Chances of self-annuitization (i.e., bequests) typically have not been addressed. We argue that heirs might be willing to bear the shortfall risk of the retiree's self-annuitization since they might benefit from a bequest. Our article proposes a "family strategy" in which heirs receive the remaining investment fund on the retiree's death, but are obliged to finance the retiree if the fund becomes exhausted. We estimate the chance and risk profile of this "family strategy" from the heirs' perspective using German capital and annuity market data. We show that in many cases, our "family strategy" offers enormous chance potential with low shortfall risk. Finally, we discuss some limitations of the proposed "family strategy" when putting the concept into practice.     

Are overconfident CEOs better leaders? Evidence from stakeholder commitments

We find evidence that the leadership of overconfident chief executive officers (CEOs) induces stakeholders to take actions that contribute to the leader's vision. By being intentionally overexposed to the idiosyncratic risk of their firms, overconfident CEOs exhibit a strong belief in their firms’ prospects. This belief attracts suppliers beyond the firm's observable expansionary corporate activities. Overconfident CEOs induce more supplier commitments including greater relationship-specific investment and longer relationship duration. Overconfident CEOs also induce stronger labor commitments as employees exhibit lower turnover rates and greater ownership of company stock in benefit plans.     

股权结构对财险公司风险承担行为影响的实证研究

本文从理论层面上剖析了公司股权结构对风险承担的影响及具体作用机理,然后基于2002~2018年我国77家财险公司的非平衡面板数据构建联立方程模型,利用三阶段最小二乘法(3SLS)进行参数估计。研究发现,股权结构对我国财险公司的风险承担行为存在显著影响。具体而言,股权集中度对承保风险存在显著正向影响,表现出"侵占效应";股权制衡度对承保风险存在显著负向影响,对投资风险存在显著正向影响;外资参股对承保风险和投资风险分别存在显著正向和负向影响,外资股东的进入有利于降低财产保险公司的投资风险,但在一定程度上会提高其承保风险。基于此,本文提出强化股权的穿透式监管、推进形成"相对集中、多股制衡"的股权结构以及适当引入外资丰富财险公司股权结构等建议。     

Contagious synchronization and endogenous network formation in financial networks

When banks choose similar investment strategies the financial system becomes vulnerable to common shocks. We model a simple financial system in which banks decide about their investment strategy based on a private belief about the state of the world and a social belief formed from observing the actions of peers. Observing a larger group of peers conveys more information and thus leads to a stronger social belief. Extending the standard model of Bayesian updating in social networks, we show that the probability that banks synchronize their investment strategy on a state non-matching action critically depends on the weighting between private and social belief. This effect is alleviated when banks choose their peers endogenously in a network formation process, internalizing the externalities arising from social learning.     

Interest Rates as Options

Since people can hold currency at a zero nominal interest rate, the nominal short rate cannot be negative. The real interest rate can be and has been negative, since low risk real investment opportunities like filling in the Mississippi delta do not guarantee positive returns. The inflation rate can be and has been negative, most recently (in the United States) during the Great Depression. The nominal short rate is the “shadow real interest rate” (as defined by the investment opportunity set) plus the inflation rate, or zero, whichever is greater. Thus the nominal short rate is an option. Longer term interest rates are always positive, since the future short rate may be positive even when the current short rate is zero. We can easily build this option element into our interest rate trees for backward induction or Monte Carlo simulation: just create a distribution that allows negative nominal rates, and then replace each negative rate with zero.     

社会信用、刚兑信仰与地方政府隐性债务

防范化解地方政府隐性债务风险是当前我国亟待解决的重要问题。本文基于2007年至2019年293个地级市面板数据,研究社会信用对地方政府隐性债务的影响。我们发现:(1)社会信用下滑会导致地方政府隐性债务规模提高和融资成本上升。(2)社会信用通过影响市场金融资源供给和政府债务需求进而影响隐性债务规模与融资成本,但上述机制在有无“刚兑信仰”情境下存在差异。(3)对比新《预算法》和“43号文”出台前后社会信用对隐性债务影响的异质性发现,债务管制显著提高了融资平台的市场化程度。虽然政策前期金融市场更多呈现出一种观望态度,但违约事件打破了金融市场对地方政府隐性债务的“刚兑信仰”,隐性债务发行受到的市场约束力度显著增强。本文对更好地认识地方政府隐性债务风险、理解当前债务治理措施的有效性以及未来如何通过完善社会信用体系建设化解地方政府隐性债务风险具有启示意义。     

Was there too little entry during the Dot Com Era?

We present four stylized facts about the Dot Com Era: (1) there was a widespread belief in a Get Big Fast business strategy, (2) the increase and decrease in public and private equity investment was most prominent in the Internet and information technology sectors, (3) the survival rate of dot com firms is on par with or higher than other emerging industries, and (4) firm survival is independent of private equity funding. To connect these findings we offer a herding model that accommodates a divergence between the information and incentives of venture capitalists and their investors. A Get Big Fast belief cascade could have led to overly focused investment in too few Internet startups and, as a result, too little entry.     

A NEW APPROACH TO CAPITAL BUDGETING FOR FINANCIAL INSTITUTIONS

The classic approach to capital budgeting based on the standard Capital Asset Pricing Model (CAPM) says that the hurdle rate (or cost of capital) for any new project or investment should depend only on the riskiness of that investment. Thus, the hurdle rate, and hence the expected value of the investment, should not be affected by the financial policy of the company evaluating the project. Nor should the hurdle rate be influenced by the company's risk management policy, or by the kind of assets it already has on the balance sheet. This article argues that such a “singlefactor” model may be inappropriate for banks and other financial institutions for two main reasons:

• ? it is especially costly for banks to raise new external funds on short notice;
• ? it is costly for banks to hold a buffer stock of equity capital on the balance sheet, even if this equity is accumulated over time through retained earnings.

The single-factor CAPM ignores such costs and, in so doing, understates the true economic costs of “illiquid” bank investments. Illiquid investments require special treatment because they impose risks that, although “diversifiable” by shareholders, cannot be readily hedged by the bank and therefore require it to hold more equity capital. The authors accordingly propose a “two-factor” model for capital budgeting— one in which banks' investment decisions are linked to their capital structure and risk management decisions. One of the key implications of the two-factor model is that a bank should evaluate new investments according to both their correlation with the market portfolio and their correlation with the bank's existing portfolio of unhedgeable risks. The authors describe several potential applications of their model, including the evaluation of proprietary trading operations and the pricing of unhedgeable derivatives positions. They also compare their approach to the RAROC methodology that has been adopted by a number of banks.     

Asymptotic optimal investment under interest rate for a class of subexponential distributions

We consider a classical risk model with the possibility of investment and positive interest rate for the riskless bond. The stock price movement is modelled as a geometric Brownian motion, the claim sizes are assumed to have a distribution belonging to a certain subclass of subexponential distributions. In this setting, we study the asymptotic behaviour of the optimal investment strategy under the ruin probability as a risk measure. This problem has been already considered before, but no results were obtained, for instance, for Weibull and Benktander-type-II distributions with certain parameters. We introduce a method which closes this gap.     

Pension risk and corporate investment distortion

Failure to correct for pension risk leads to upward-biased discount rate estimates in firms with pension risk exposure. The result is a negative and economically significant relation between pension risk and corporate investment. The effect is confined to investment decisions that require discount rate estimates. Moreover, it is stronger if project value is more sensitive to such estimates. Because of this bias, firms miss valuable investment opportunities. The results survive robustness tests that address endogeneity concerns and alternative interpretations of the evidence. The general implication is that non-operating risks can distort, if ignored, corporate investment decisions.     

Share values, inflation, and escalating tax rates

The interaction of inflation with a progressive tax system has been known to cause tax rates, and thus tax liabilities, to escalate with nominal income. Often blamed for having undesirable effects on investment and wealth, this feature of modern tax systems has not received formal treatment in the literature. The present study examines the impact of this inflation-related phenomenon upon the value of corporate equity within the framework of partial equilibrium. It is shown that the combination of moderate inflation and a mildly progressive rate structure may have a substantial adverse effect on share values, an effect sharply increasing with the firm's real growth rate. These results provide a partial explanation for the apparent conflict between the Fisherian hypothesis and the commonly observed inverse relationship between the rate of inflation and the deflated value of stock price indices. To the extent that occasional adjustment of tax schedules does not prevent taxpayers from being pushed toward higher tax brackets, these results suggest a sizable potential benefit from full indexation of tax rates in an economy suffering from chronic inflation. They also confirm the belief that failure to do so is expecially harmful to economic growth.     

Generating currency trading rules from the term structure of forward foreign exchange premia

The quality of an exchange rate forecasting model has typically been judged relative to a random-walk in terms of out-of-sample forecast errors. The difficulty of outperforming this benchmark is well documented, although Clarida and Taylor have demonstrated how the random walk can be beaten in this metric by exploiting information embedded within the term structure of forward exchange rate premia. But this achievement does not guarantee success within an investment context. We therefore assess whether the Clarida-Taylor framework can be used to generate significant trading profits in combination with an acceptable degree of risk in a realistic investment portfolio context.     

Tax Rate Uncertainty, Investment Decisions, and Tax Neutrality

This article deals with the effects of tax rate uncertainty (TRU) on individual investment behavior. We show that under risk neutrality as well as under risk aversion, increased TRU has an ambiguous impact on investment, depending on the investment project's structure of cash flows and depreciation deductions. Although the investment effects are small the popular view that tax policy uncertainty depresses real investment is rejected. Further, tax neutrality in the light of tax policy uncertainty is defined more precisely. Neutrality results for the Johansson-Samuelson tax and the cash flow tax that are known from certainty are confirmed under TRU.     

Effects of market returns and market volatility on investor risk tolerance

The 2008 credit market debacle and subsequent “Great Recession” accompanied by the stock market crash of 2008 has caused many investors and their advisors to reevaluate their risk tolerance and investment asset allocation choices. Additionally, marketers for many financial institutions and investment advisors are rethinking the strategies and tactics they use for both individual and corporate clients about the level of risk that is appropriate to meet their investment objectives. This research shows that an investor’s risk tolerance is not as stable as it has been portrayed previously in the literature and can be affected by both the direction of movement and the volatility in the market. In addition, this research provides some suggestions on how to frame investment decisions for individual investors to better assess their actual risk tolerance in the face of a volatile market.     

中国税收与经济增长关系的实证检验

经验证据表明:我国GDP对税收有显著的正向影响;税收与国内生产总值的关系不会明显偏离均衡状态,税收与经济税源之间保持着合理的关系。从经济增长率最大角度,我国最优宏观税率应该是20%左右。税收应该随着经济增长而增长,宏观税率的提高要与经济增长适度,说明了“拉弗”曲线在我国的重要现实意义。     

中国境外投资风险及其防范研究

实施“走出去”战略既是企业的微观投资行为也是政府的宏观管理问题,境外投资比国内投资面临的风险更大。因此,要防范境外投资风险更需要政府的支持,一方面通过建立境外投资协调机制对境外投资予以监管和保护;另一方面通过构建境外投资风险预警系统,加强境外投资风险的识别和预控。