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Yen Bloc or Koala Bloc? Evidence of the Relevance of Australia to East Asian Economies 日元集团还是考拉集团?澳大利亚与东亚经济相关性的证据
Pub Date : 2003-04-26 DOI: 10.2139/ssrn.391691
Chakriya Bowman
As the strength of the Japanese economy grew during the 1980s, many studies examined the integration between currencies in the region. Several studies found evidence for a "yen bloc", a significant and strengthening relationship between the Japanese yen and other regional currencies due to trade, direct and indirect investment by Japan in the region. However, few studies compared the role of Japan with another influential regional economy, Australia. On closer investigation it appears that the Australian dollar has a similar role in the East Asian region, and the linkages between the dollar and the Asian currencies show as much support for a "koala bloc" as a "yen bloc". In fact, as the 20th Century drew to a close, the Australian dollar appears to be a regional currency of at least equal importance to the yen. With the ever-increasing economic participation of Australia in Asia, and considering the economic difficulties facing Japan, it is a trend that can be expected to continue.
随着日本经济实力在20世纪80年代的增长,许多研究都考察了该地区货币之间的一体化。几项研究发现了“日元集团”存在的证据,即由于日本在该地区的贸易、直接和间接投资,日元与其他地区货币之间存在一种重要且不断加强的关系。然而,很少有研究将日本的作用与另一个有影响力的区域经济体澳大利亚进行比较。经过更仔细的调查,澳元似乎在东亚地区扮演着类似的角色,美元与亚洲货币之间的联系显示出对“考拉集团”和“日元集团”同样多的支持。事实上,随着20世纪接近尾声,澳元似乎是一种至少与日元同等重要的地区性货币。随着澳大利亚在亚洲的经济参与度不断提高,考虑到日本面临的经济困难,这是一个可以预期的趋势。
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引用次数: 0
Direct Evidence on the Market-Driven Acquisitions Theory 市场驱动收购理论的直接证据
Pub Date : 2003-03-01 DOI: 10.2139/ssrn.391569
James S. Ang, Yingmei Cheng
We provide direct empirical evidence that share overvaluation is an important motive for firms to make stock acquisitions. We find that more overvalued firms are more likely to acquire with stock, and acquirers are more overvalued in successful stock mergers than in withdrawn mergers. Acquirers' overvaluation, on average, exceeds the targets' premium-adjusted overvaluation. Shareholders of stock acquirers, whose overvaluation is greater than their targets' premium-adjusted overvaluation, realize sustained wealth gains from one day before the merger announcement up to three years after the merger completion, as compared with a matching sample of similarly overvalued but nonacquiring firms.
我们提供了直接的经验证据,证明股票估值过高是企业进行股票收购的重要动机。我们发现更多被高估的公司更有可能用股票进行收购,并且在成功的股票并购中收购者比在失败的并购中收购者更被高估。收购者的高估,平均来说,超过了被收购者溢价调整后的高估。与估值同样过高但未进行收购的公司的匹配样本相比,估值高于被收购公司溢价调整后的估值的股票收购方的股东,从并购公告的前一天到并购完成后的三年,实现了持续的财富增长。
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引用次数: 288
An Accurate and Efficient Method for Pricing Asian Options 一种准确有效的亚洲期权定价方法
Pub Date : 2003-01-14 DOI: 10.2139/ssrn.392020
Chuang-Chang Chang, Chueh-Yung Tsao
In this paper we provide an accurate and efficient method for valuing Asian options that works well for the low and medium volatility as well as longer average time window. Numerical results show that our method significantly outperforms the other analytic approximation methods in the literature. The pricing errors in terms of mean square errors for calculating a bundle of Asian options are less than one percent. Our method is fast and efficient compared to the Monte Carlo benchmark method adopted as well.
本文提出了一种适用于中、低波动率和较长平均时间窗的亚洲期权估值方法。数值结果表明,该方法明显优于文献中其他解析近似方法。以均方误差来计算一捆亚洲期权的定价误差小于1%。与蒙特卡罗基准法相比,该方法具有快速、高效的特点。
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引用次数: 4
Price Discovery in Hybrid Markets: Further Evidence from the London Stock Exchange 混合市场中的价格发现:来自伦敦证券交易所的进一步证据
Pub Date : 2003-01-12 DOI: 10.2139/ssrn.410180
Hung-Neng Lai
Liquid stocks on the London Stock Exchange are essentially traded in a hybrid market where an order book and dealers co-exist. While early studies reveal that dealers play an important role in providing liquidity to the market, this paper provides evidence that the price discovery process is largely driven by the trades from the order book.
伦敦证券交易所的流动性股票基本上是在一个订单簿和交易商共存的混合市场上交易的。虽然早期的研究表明,交易商在向市场提供流动性方面发挥着重要作用,但本文提供的证据表明,价格发现过程在很大程度上是由订单簿中的交易驱动的。
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引用次数: 2
Endogenous Illiquidity Trading Costs from Risk Sharing 风险分担中的内生非流动性交易成本
Pub Date : 2002-12-01 DOI: 10.2139/ssrn.364861
S. Galy
In general, index and commodity futures markets are considered to be highly liquid. Yet these markets can quickly become illiquid in periods of high uncertainty. So far, there exists no theoretical explanation as to why liquid futures markets can become illiquid in these periods of high uncertainty. This paper shows how illiquidity creates theoretically an endogenous transaction cost increasing with the variance of the spot price and the volume of trades in the futures market generated by hedging pressures. High uncertainty represented by high volatility in the spot market drives out liquidity in the futures market the larger the trades. This transaction cost comes from the trader's inability to share risk freely with the rest of the futures market. Even in its absence, futures markets will be illiquid if its mechanism allows for multiple prices. This suggests that a single price mechanism increases liquidity in the futures markets by forcing the sharing of risks, abstracting from traditional trading costs that would create effectively a bid-ask spread.
一般来说,指数和商品期货市场被认为是高流动性的。然而,在高度不确定性时期,这些市场可能很快变得缺乏流动性。到目前为止,还没有理论解释为什么流动性好的期货市场在这些高度不确定性的时期会变得缺乏流动性。本文从理论上说明了流动性不足是如何产生内生交易成本的,这一内生交易成本随着现货价格的变化和期货市场上对冲压力所产生的交易量的变化而增加。以现货市场的高波动性为代表的高不确定性,使得交易规模越大的期货市场流动性越差。这种交易成本来自于交易者无法与期货市场的其他参与者自由分担风险。即使没有它,如果其机制允许多种价格,期货市场也将缺乏流动性。这表明,单一的价格机制通过迫使风险分担来增加期货市场的流动性,从而从传统的交易成本中抽象化,而传统的交易成本实际上会产生买卖价差。
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引用次数: 1
Measuring Financial and Economic Integration with Equity Prices in Emerging Markets 用新兴市场的股票价格衡量金融和经济一体化
Pub Date : 2002-11-01 DOI: 10.2139/ssrn.314833
F. Ravazzolo, Kate Phylaktis
Abstract This paper examines real and financial links simultaneously at the regional and global level for a group of Pacific-Basin countries by analysing the covariance of excess returns on national stock markets over the period 1980–1998. We find overwhelming evidence at the regional and global level and for all sub-periods that financial integration is accompanied by economic integration. This seems to suggest that economic integration provides a channel for financial integration, which explains, at least partly, the high degree of financial integration found in this study and in other studies for this region even in the presence of foreign exchange controls. This result has important implications for the use of restrictions to isolate capital markets from world influences.
本文通过分析1980-1998年期间国家股票市场超额收益的协方差,在区域和全球层面同时考察了太平洋盆地国家集团的实际和金融联系。我们发现,在区域和全球层面以及所有子阶段,有大量证据表明,金融一体化伴随着经济一体化。这似乎表明,经济一体化为金融一体化提供了一个渠道,这至少在一定程度上解释了本研究和该地区其他研究中发现的高度金融一体化,即使存在外汇管制。这一结果对利用限制措施使资本市场不受世界影响具有重要意义。
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引用次数: 208
Does Time Variation in Systematic Risk Affect the Profitability of Contrarian Investment Strategies? 系统风险的时间变化是否影响反向投资策略的盈利能力?
Pub Date : 2002-06-20 DOI: 10.2139/ssrn.314876
Antonios Antoniou, E. Galariotis, S. Spyrou
Recent empirical studies seem to suggest that contrarian strategies make substantial profits that may be inconsistent with informationaly efficient markets. This paper examines whether the detection of contrarian profits is sensitive to the definition of abnormal returns and the duration of the formation and testing periods and investigates the effect of well-known monthly seasonals on the empirical results. Furthermore, in view of recent evidence that beta risk is not constant, the paper employs a procedure that allows for time-variation in systematic risk, and also examines whether abnormal returns of contrarian strategies are normal compensation for changes in risk between portfolio formation and portfolio testing period. No empirical evidence on contrarian profits exist so far for the Athens Stock Exchange, an emerging market for which one would expect more return predictability. To anticipate the results, we find that longer horizon contrarian strategies are more profitable than shorter horizon strategies. However, contrarian profits are very sensitive to the specification of abnormal returns, i.e. when we allow beta risk to vary over time most of the profits from contrarian strategies disappear. Furthermore, even for the case where we do detect arbitrage profits the results indicate that they may be due to changes in market risk.
最近的实证研究似乎表明,逆向策略可以获得可观的利润,这可能与信息有效的市场不一致。本文考察了逆向利润的检测是否对异常收益的定义以及形成期和测试期的持续时间敏感,并考察了众所周知的月度季节性因素对实证结果的影响。此外,鉴于最近的证据表明β风险不是恒定的,本文采用了一种允许系统风险随时间变化的程序,并检验了反向策略的异常收益是否是对投资组合形成和投资组合测试期间风险变化的正常补偿。到目前为止,还没有实证证据表明雅典证券交易所(Athens Stock Exchange)存在逆向利润,而人们对这个新兴市场的回报预期会更高。为了预测结果,我们发现长线逆向投资策略比短线策略更有利可图。然而,逆向利润对异常回报的规格非常敏感,也就是说,当我们允许贝塔风险随时间变化时,大部分逆向策略的利润就会消失。此外,即使我们确实检测到套利利润的情况下,结果表明它们可能是由于市场风险的变化。
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引用次数: 0
The Supply of Trade Credits: Evidence from the UK 贸易信贷的供给:来自英国的证据
Pub Date : 2002-06-20 DOI: 10.2139/ssrn.314874
K. Soufani, P. Poutziouris
The extension of trade credit is considered to be a form of short term financing that many firms use from both the supply and demand sides. This paper focuses on testing the theoretical determinants on trade credit and examines whether 1) creditworthy firms that have access to both external and internal financing, 2) they experience growth in profits and sales, and 3) price discrimination can actually motivated the extension of trade credit. The paper uses a large sample of data from the UK. We identify whether the decision to offer trade credit as measured by the level of account receivables depends, on firm's size. We draw a distinction between small, medium and large firms, and find evidence that the decision to extend trade credit and the relationship to the firm's ability to access finance, intermediate, or price discriminate can to a large extent be determined by the size of the firm.
贸易信贷的延长被认为是许多公司从供需双方都使用的一种短期融资形式。本文的重点是检验贸易信贷的理论决定因素,并检验是否1)信誉良好的公司,有机会获得外部和内部融资,2)他们经历利润和销售的增长,以及3)价格歧视实际上可以激励贸易信贷的延伸。这篇论文使用了来自英国的大量数据样本。我们确定是否决定提供贸易信贷作为衡量应收账款的水平取决于公司的规模。我们对小型、中型和大型企业进行了区分,并发现证据表明,扩大贸易信贷的决定以及与企业获得融资、中间产品或价格歧视的能力之间的关系,在很大程度上取决于企业的规模。
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引用次数: 2
Assessment and Analysis of Credit Risk with Using of Logical and Probabilistic Model 基于逻辑与概率模型的信用风险评估与分析
Pub Date : 2002-06-19 DOI: 10.2139/ssrn.314380
V. Karassev, Andrey Roukine, E. Solojentsev
The present paper contains description of logic and probabilistic (LP) model of the credit risk and evidences of its high accuracy and stability based on using of groups of incompatible events (Bayes' formula) and the logically well organised probabilistic polynomial of risk. However the present paper pays basic attention to the following applied aspects of using credit risk LP-models, connected with acquisition of income: Evaluation of accuracy and stability of credit risk model, numerical evaluation of credit risk and set the price for the risk, choice of relation of incorrectly classified good and bad credits, risk analysis of a separate credit, bank credit activity analysis, choice of optimum variety of signs for credit description, choice of the grade number for each sign and intervals of values for grades. We state also an approach for development of dynamic risk LP-model and describe developed Software for evaluation and analysis of credit risk.
本文描述了信用风险的逻辑与概率(LP)模型,并利用不相容事件群(贝叶斯公式)和逻辑组织良好的风险概率多项式证明了其准确性和稳定性。然而,本文基本关注了信用风险lp模型与收入获取相关的以下应用方面:信用风险模型的准确性和稳定性评价、信用风险的数值评价和风险价格的设定、错误分类的好坏信用关系的选择、单独信用的风险分析、银行信用活动分析、信用描述的最优标志品种的选择、每个标志的等级号和等级值区间的选择。本文还阐述了动态风险lp模型的开发方法,并描述了开发的用于信用风险评估和分析的软件。
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引用次数: 0
The Stochastic Properties of Systematic Risk for U.S. Mutual Funds 美国共同基金系统风险的随机特性
Pub Date : 2002-06-18 DOI: 10.2139/ssrn.314365
J. Hillier
This paper investigates three possible processes by which mutual fund betas may develop over time. The paper proposes the idea that the underlying structure of fund returns can be interpreted as an indicator of management style. Due to the pressures placed on fund managers to remain within certain risk guidelines, laid out in the funds prospectus, over time the beta of an actively managed fund should exhibit mean reversion. We impose three different time-varying models on mutual fund betas using the Kalman filter algorithm. The three processes are: Firstly a random coefficient with constant mean model where any disturbance or shock to the funds systematic risk in one period has no effect on future beta values, possibly indicating an immediate re-alignment of the funds risk profile by the manager. Secondly an AR(1) model where shocks would have some persistence, and finally a random walk process where shocks will persist indefinitely. Our findings, over all funds in the sample, show an equal split between the random coefficient model and the random walk model. Furthermore, when we split the sample into fund classifications we find that the random walk model dominates the small company funds, suggesting these funds have adopted a more passive management style, possibly due to the reduced liquidity of the underlying stocks. The random coefficient model on the other hand dominates growth funds and speciality funds, indicating a more active management style is being used to counteract any shocks to the underlying systematic risk of the fund.
本文研究了共同基金贝塔系数随时间发展的三种可能过程。本文提出基金收益的基础结构可以被解释为管理风格的一个指标。由于基金经理承受着保持在基金招股说明书中列出的某些风险指导方针之内的压力,随着时间的推移,积极管理基金的贝塔系数应该呈现均值回归。我们使用卡尔曼滤波算法对共同基金的贝塔系数施加三种不同的时变模型。这三个过程是:首先是一个随机系数的常均值模型,其中一个时期内对基金系统风险的任何干扰或冲击都不会对未来的贝塔值产生影响,这可能表明基金经理立即重新调整了基金的风险概况。其次是AR(1)模型,其中冲击具有一定的持久性,最后是随机游走过程,其中冲击将无限期地持续下去。我们的研究发现,在样本中的所有基金中,随机系数模型和随机游走模型之间的比例相等。此外,当我们将样本分成基金分类时,我们发现随机漫步模型在小公司基金中占主导地位,这表明这些基金采用了更被动的管理风格,可能是由于标的股票的流动性降低。另一方面,随机系数模型在成长型基金和特种基金中占主导地位,表明一种更为积极的管理风格正被用来抵消基金潜在系统性风险的任何冲击。
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引用次数: 1
期刊
European Financial Management Association Meetings (EFMA) (Archive)
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