上交所与银行间国债市场的新券效应及比较

新券效应与国债品种特征、投资者行为和市场微观结构均有密切关系。上交所和银行间国债市场的新券效应不仅存在共同点，也存在明显差异。在交易额占比最大的基准国债品种上，两个市场均表现出显著的新券效应。但由于投资者行为存在差异，上交所国债市场的新券效应更倾向于中长期国债品种，而银行间国债市场的新券效应更倾向于短期国债品种。而且，上交所国债市场的指令驱动交易方式便于连续交易和信息披露，方便考察新券效应，而银行间国债市场仅能在较短时间内考察新券效应。在上交所国债市场上，中长期国债与国债回购的利差更大，有利于现券回购套利投资，中长期新券吸引套利投资者积极参与，也促进了新券效应。     

Value Creation and Governance Structure in Reit Mergers

The Umbrella Partnership REIT (UPREIT) structure has become the dominant form of organization for U.S. REITs. We examine the utility of this corporate structure from a new perspective, finding evidence that convertible securities issued by UPREITs in payment for properties acquired from private sellers often function as instruments of corporate control, aligning the interests of new executives acquired in the transaction with those of the purchasing REIT’s shareholders. We also find evidence that these financial arrangements are used to signal information regarding the firm’s future prospects. We use a sample of 53 public–private mergers 1995–2001, in which the acquirer is a publicly traded REIT. We find that wealth effects from central managerial changes are positively related to the degree to which payment takes the form of convertible equity units of UPREIT subsidiaries, and to the minimum lock-up period for those units prior to conversion. The positive effects of longer lock-ups are evidence that financing structure can be used to reduce agency and information costs related to managerial restructuring in public–private mergers.     

A jump to default extended CEV model: an application of Bessel processes

We develop a flexible and analytically tractable framework which unifies the valuation of corporate liabilities, credit derivatives, and equity derivatives. We assume that the stock price follows a diffusion, punctuated by a possible jump to zero (default). To capture the positive link between default and equity volatility, we assume that the hazard rate of default is an increasing affine function of the instantaneous variance of returns on the underlying stock. To capture the negative link between volatility and stock price, we assume a constant elasticity of variance (CEV) specification for the instantaneous stock volatility prior to default. We show that deterministic changes of time and scale reduce our stock price process to a standard Bessel process with killing. This reduction permits the development of completely explicit closed form solutions for risk-neutral survival probabilities, CDS spreads, corporate bond values, and European-style equity options. Furthermore, our valuation model is sufficiently flexible so that it can be calibrated to exactly match arbitrarily given term structures of CDS spreads, interest rates, dividend yields, and at-the-money implied volatilities.     

Calm Consideration of Prosperous Growth of Convertible Bond

As a re-financing instrument for listed companies, convertible bond has been greatly promoting the prosperity of China capital market. However, due to the institutional defect of stock ownership is severe, convertible bond has also inevitably caused the negative effect on the situation that the non-negotiable shareholders are frantically depriving the negotiable shareholders of equity when enriching the financial products and releasing the financial risk. Taking ShanYing convertible bond as an example, the article researches the reasonableness in the market pricing by using the Single-Index Model and further analyze reasonable activities of the present listed companies＇ tending to issuing convertible bond.     

基于集对论的可转换债券定价模型

可转债是一种既含债券性质又含期权性质的金融衍生产品,利用常规的定价模型常常低估市场价格,使定价方法的可信度大大降低。基于集对分析方法,选取单因素B-S期权定价模型与单因素交换期权模型,对定价模型进行测度和修正,通过实证检验,可以了解到,修正后的定价模型更具适用性。     

The shortage of safe assets in the US investment portfolio: Some international evidence

This paper develops a Bayesian Global VAR (GVAR) model to track the international transmission dynamics of two stylized shocks, namely a supply and demand shock to US-based safe assets. Our main findings can be summarized as follows. First, we find that (positive) supply-sided shocks lead to pronounced increases in economic activity which spills over to foreign countries. The impact of supply-sided shocks can also be seen for other quantities of interest, most notably equity prices and exchange rates in Europe. Second, a demand-sided shock leads to an appreciation of the US dollar and generally lower yields on US securities, forcing investors to shift their portfolios towards foreign fixed income securities. This yields sizable positive effects on US output, equity prices and a general decrease in financial market volatility.     

Cross‐Listed Bonds,Information Asymmetry,and Conservatism in Credit Ratings

We propose information asymmetry as an additional explanation for rating conservatism. Because information asymmetry is likely higher for cross‐listed bonds than for U.S. bonds, we expect and find that cross‐listed bonds are rated more conservatively than U.S. domestic bonds at issuance. Further, cross‐listed bonds receive less frequent upgrades and take longer to be upgraded after issuance. Because lower ratings might also reflect higher default risk based on agencies’ private information, we conduct additional tests to discriminate between the rating conservatism and private information explanations. The results are consistent with ratings conservatism and inconsistent with the private information explanation.     

可转债上市公司调整转股价格的行为及影响分析

摘要：可转债是兼有股票期权和债券性质的复合型金融衍生品。为促使投资者尽快将可转债转换为股票,上市公司的常见做法是向下调整转股价格。因此,研究上市公司调整转股价格的行为及其影响十分必要。本文首先分析了现有可转债上市公司近五年调整转股价格的行为及其原因,并将其行为分为自然调整和主动向下修正两类;然后着重研究上市公司主动向下修正转股价格的行为对转股比例、股票价格、可转债价格j者的影响,最后得出相应结论。     

The Riskiness of Corporate Bonds

We use an index of riskiness recently proposed by Aumann and Serrano ( 2008 ) to analyze how the riskiness of diversified portfolios of corporate bonds changes across rating classes and through time and how it compares to the riskiness of other financial instruments. We find that differences in riskiness among portfolios of bonds belonging to different rating classes are seldom statistically significant. We instead find significant time variation in riskiness, driven mainly by return volatility, inflation, and average bond yields. In particular, we find that increases in average bond yields have historically tended to reduce the riskiness of portfolios of corporate bonds by increasing their expected return and by lowering the probability of portfolio losses.