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Ownership Structure and Firm Value: New Evidence from the Spanish Corporate Governance System 股权结构与公司价值:来自西班牙公司治理制度的新证据
Pub Date : 2003-06-08 DOI: 10.2139/ssrn.393464
A. D. de Miguel, Julio Pindado, Chabela de la Torre
In this paper we investigate the relationship between ownership structure and value in Spanish firms. We therefore provide new evidence on this relation, since the Spanish corporate governance system differs from the ones considered in previous theoretical and empirical research. According to financial literature on corporate ownership structure, we have focused on the concentration of ownership - in order to test the monitoring and expropriation hypotheses - and on insider ownership - looking for evidence in favour of the convergence-of-interest and entrenchment hypotheses. We have estimated our two empirical models using the same methodology so as to avoid several problems emphasized by previous literature. Specifically, we use the Generalized Method of Moments which allows us to eliminate unobservable heterogeneity - using panel data methodology - and to control for potential endogeneity - using instruments. Unlike previous studies, our empirical evidence supports a quadratic relationship between value and ownership concentration. This result confirms not only the monitoring but also the expropriation effect for the very highest concentration values in Spanish firms. The fact that Spanish majority shareholders manage to expropriate the wealth of minority shareholders, while in other countries - such as the UK, the US, Germany and Japan - this does not occur, confirms the idea that differences in corporate governance systems lead to different value-ownership relations. Additionally, the insider ownership model provides results that support a cubic specification for the value-insider ownership relation in Spanish firms. We interpret this evidence as consistent with both the convergence-of-interests and the entrenchment effects. Moreover, we find that Spanish insiders get entrenched at higher ownership levels than their UK and US counterparts. This result is also consistent with the argument that different value-ownership relations might be explained by differences in corporate governance systems across countries.
本文研究了西班牙公司股权结构与价值之间的关系。由于西班牙公司治理制度不同于以往的理论和实证研究,因此我们为这种关系提供了新的证据。根据有关公司所有权结构的金融文献,我们关注所有权集中度——以检验监督和征用假说——以及内部人所有权——寻找支持利益趋同假说和堑壕假说的证据。我们使用相同的方法来估计我们的两个经验模型,以避免以前文献强调的几个问题。具体来说,我们使用广义矩法,它允许我们消除不可观察的异质性-使用面板数据方法-并使用仪器控制潜在的内质性。与以往的研究不同,我们的实证证据支持价值与股权集中度之间的二次关系。这一结果不仅证实了监测,而且还证实了西班牙公司中最高集中值的征用效应。西班牙大股东设法剥夺了小股东的财富,而在英国、美国、德国和日本等其他国家却没有发生这种情况,这一事实证实了这样一种观点,即公司治理体系的差异导致了不同的价值-所有权关系。此外,内部人所有权模型提供的结果支持西班牙公司价值-内部人所有权关系的立方规范。我们将这一证据解释为与利益趋同效应和堑壕效应相一致。此外,我们发现,与英国和美国的同行相比,西班牙内部人士的持股比例更高。这一结果也与以下观点相一致:不同的价值-所有权关系可能由各国公司治理制度的差异来解释。
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引用次数: 41
Dynamic Hedging with Stochastic Differential Utility 随机微分效用的动态套期保值
Pub Date : 2003-06-08 DOI: 10.2139/ssrn.393463
Rodrigo De-Losso
In this paper we study the dynamic hedging problem using three different utility specifications: stochastic differential utility, terminal wealth utility, and we propose a particular utility transformation connecting both previous approaches. In all cases, we assume Markovian prices. Stochastic differential utility, SDU, impacts the pure hedging demand ambiguously, but decreases the pure speculative demand, because risk aversion increases. We also show that consumption decision is, in some sense, independent of hedging decision. With terminal wealth utility, we derive a general and compact hedging formula, which nests as special all cases studied in Duffie and Jackson (1990). We then show how to obtain their formulas. With the third approach we find a compact formula for hedging, which makes the second-type utility framework a particular case, and show that the pure hedging demand is not impacted by this specification. In addition, with CRRA- and CARA-type utilities, the risk aversion increases and, consequently the pure speculative demand decreases. If futures prices are martingales, then the transformation plays no role in determining the hedging allocation. We also derive the relevant Bellman equation for each case, using semigroup techniques.
本文采用三种不同的效用规范:随机微分效用、终端财富效用,研究了动态套期保值问题,并提出了一种连接这两种方法的特定效用转换。在所有情况下,我们都假设马尔可夫价格。随机微分效用(SDU)对纯套期保值需求的影响不明确,但对纯投机需求的影响较小,因为风险厌恶增加。我们还证明了,在某种意义上,消费决策独立于对冲决策。利用终端财富效用,我们推导出了一个通用而紧凑的套期保值公式,该公式将Duffie和Jackson(1990)研究的所有案例作为特例。然后我们展示如何得到它们的公式。通过第三种方法,我们找到了一个紧凑的套期保值公式,这使得第二类效用框架成为一个特殊的案例,并表明纯套期保值需求不受该规范的影响。此外,CRRA-和cara -类型的公用事业增加了风险规避,因此纯投机需求减少。如果期货价格是鞅,那么转换对确定套期保值配置没有作用。我们还利用半群技术推导了每种情况下的相关Bellman方程。
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引用次数: 0
An Event Study of Reverse Stock Splits in Hong Kong Market 香港市场股票反向拆分的事件研究
Pub Date : 2003-06-04 DOI: 10.2139/ssrn.393222
Lihua Jing
I use event date methodology to examine the market reaction to reverse stock splits in Hong Kong market from 1991 to 2001. I first investigate the prospectuses distributed by reverse-splitting firms. Four major reasons are provided in firms' prospectuses: 1. Reverse splits will reduce transaction costs for dealings in the consolidated shares; 2. Reverse splits will improve the flexibility in pricing new issue when needed; 3. Share consolidation should raise the profile of the company among institutional and international investors; 4. Directors believe there exists a favorable stock price range, and reverse splits are therefore be used to bring the market value of the shares into a range that the firms consider more appropriate. I find that the abnormal returns around the announcement date are negative and small firms have stronger negative reaction. This result is consistent with the event studies in the U.S. market [Lamoureux and Poon (1987), Peterson and Peterson (1992)]. However, this negative response is contrary to the results in Canada where market reacts positively with a cumulative abnormal return of 9.3 percent on the announcement date that is thereafter maintained [Masse et al. (1997)]. No significant market response to the ex-date is observed. The adjusted trading volume increases considerably after reverse splits. This result partially suggests that the reverse stock improve the liquidity of the stock. The majority of the reverse-splitting firms do not change their board lot size after splits, they therefore reduce transacting costs. The relative tick sizes, which also affect the transaction cost, decrease significantly after splitting. My analysis of the cross-sectional distribution of the split factor provides no support for the "optimal stock price range" hypothesis. Hence, the reverse stock splits can be viewed as a passive reaction to a decayed firm performance rather than an active means to achieve a specific objective.
我使用事件日期方法研究了1991年至2001年香港市场对股票反向拆分的反应。我首先调查了反向拆分公司分发的招股说明书。公司招股说明书提供了四个主要原因:1。反向拆分将降低合并股份交易的交易成本;2. 反向拆分将提高在需要时为新股定价的灵活性;3.股票整合应该会提高公司在机构和国际投资者中的形象;4. 董事们认为存在一个有利的股票价格区间,因此,反向拆分被用来将股票的市场价值带入公司认为更合适的范围。我发现公告日期前后的异常收益为负,小企业的负面反应更强。这一结果与美国市场的事件研究一致[Lamoureux and Poon (1987), Peterson and Peterson(1992)]。然而,这种负面反应与加拿大的结果相反,在加拿大,市场反应积极,公告日的累积异常回报率为9.3%,此后一直保持不变[Masse et al.(1997)]。没有观察到市场对该日期的重大反应。反向拆分后调整后的成交量大幅增加。这一结果部分说明反向股票提高了股票的流动性。大多数反向拆分公司在拆分后不改变他们的董事会规模,因此他们降低了交易成本。分割后,影响交易成本的相对tick大小显著减小。我对分割因子横截面分布的分析没有为“最优股价区间”假说提供支持。因此,反向股票分割可以被看作是对公司业绩下滑的被动反应,而不是实现特定目标的积极手段。
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引用次数: 10
Can Structural Models Explain Prices of Sovereign Bonds? 结构模型能解释主权债券价格吗?
Pub Date : 2003-06-01 DOI: 10.2139/ssrn.393468
R. Diana Diaz-Ledezma, G. Gemmill
We test the ability of an extended structural model, originally proposed by Cathcart and El-Jahel (2003), to capture the dynamics of prices for Mexican Brady bonds. In this framework, default is triggered either when a latent variable measuring financial distress falls below a specific threshold (as in structural models), or when a hazard rate causes an unexpected jump (as in reduced form models). Using market prices and a Kalman Filter methodology, we estimate the model and extract the implicit "distance-to-default" over a seven-year period. The model is slightly superior to one which assumes that distance-to-default follows a random walk. However, the hazard-rate feature of the model makes no contribution to explaining the dynamics of market prices. We find that three economic factors explain approximately 70% of the variation in the distance-to-default, namely: the level of the stock market, the exchange rate and the risk-free term structure. When the distance-to-default is approximated from these variables and substituted back into the models, the Cathcart and El-Jahel model still performs better than the naive model, not only in-sample but out-of-sample as well. The structural model is therefore supported over simpler alternatives, but only by a small margin.
我们测试了扩展结构模型的能力,该模型最初由Cathcart和El-Jahel(2003)提出,以捕捉墨西哥布雷迪债券的价格动态。在这个框架中,当衡量金融危机的潜在变量低于特定阈值时(如在结构模型中),或者当风险率导致意外跃升时(如在简化模型中),就会触发违约。使用市场价格和卡尔曼滤波方法,我们对模型进行了估计,并提取了七年期间隐含的“违约距离”。该模型略优于假设距离到违约遵循随机游走的模型。然而,该模型的风险率特征对解释市场价格的动态没有贡献。我们发现,三个经济因素解释了约70%的违约距离变化,即:股票市场水平、汇率和无风险期限结构。当从这些变量近似到默认的距离并代回模型时,Cathcart和El-Jahel模型仍然比朴素模型表现得更好,不仅在样本内,而且在样本外。因此,结构模型比更简单的替代方案更受支持,但差距很小。
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引用次数: 2
Stock Market Sensitivity to Interest Rates and Inflation 股票市场对利率和通货膨胀的敏感性
Pub Date : 2003-05-26 DOI: 10.2139/ssrn.392589
N. Tessaromatis
Knowledge of the interest rate sensitivity of stocks is important in many areas of investment and finance. This paper makes three contributions to the existing literature: (a) it provides estimates of stock sensitivity to changes in nominal and real interest rates and expected inflation (b) it provides estimates of the degree of indexation of future growth expectations to changes in nominal and real interest rates and expected inflation and (c) examines whether government regulation, cyclicality of future cash flows and growth versus value characteristics of stocks can explain the differences in interest rate sensitivities across stocks.
股票利率敏感性的知识在投资和金融的许多领域都很重要。本文对已有文献的贡献有三点:(a)它提供了股票对名义利率和实际利率以及预期通货膨胀变化的敏感性的估计(b)它提供了对未来增长预期对名义利率和实际利率以及预期通货膨胀变化的指标化程度的估计以及(c)检验政府监管、未来现金流的周期性以及股票的增长与价值特征是否可以解释不同股票的利率敏感性差异。
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引用次数: 25
The IPO Derby: Are There Consistent Losers and Winners on this Track? IPO德比:在这条赛道上是否有一贯的输家和赢家?
Pub Date : 2003-05-20 DOI: 10.2139/ssrn.392002
K. Chan, John W. Cooney, Joonghyuk Kim, A. Singh
Recent studies have documented that various factors such as discretionary accounting accruals, underwriter reputation, venture capital backing, and firm size will affect the long-run performance of IPOs. However, it is not clear whether the return predictability of these attributes are the manifestation of one phenomenon, or independent results. In this study, we use univariate and multivariate analyses on these factors to trace the sources of return predictability. We find that these previously identified effects are not the same phenomenon, though correlated to some extent. The results show that a confluence of these determinants is more important than any individual factor in explaining the IPO long-run performance. We also identify a subset of IPOs that outperform their benchmark and another subset that consistently underperforms.
最近的研究证明,各种因素,如可自由支配的会计应计利润、承销商声誉、风险资本支持和公司规模将影响ipo的长期表现。然而,目前尚不清楚这些属性的回报可预测性是一种现象的表现,还是独立的结果。在本研究中,我们使用单变量和多变量分析这些因素来追踪回报可预测性的来源。我们发现,虽然在某种程度上相关,但这些先前确定的影响并不是相同的现象。结果表明,在解释IPO长期表现时,这些决定因素的综合作用比任何单个因素都更重要。我们还确定了一些表现优于基准的ipo,以及另一些表现一直不佳的ipo。
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引用次数: 47
Option Exchange Design: Concentration of Trading and Open Interest at the Swedish Index Options Market 期权交易所设计:瑞典指数期权市场交易和未平仓合约的集中
Pub Date : 2003-05-19 DOI: 10.2139/ssrn.392583
Lars Norden
What is the optimal design of an options market? From investors' as well as the option exchange's point of view it ought to be a marketplace where demand and supply for different contracts balances, and where the choice between trading in different contracts ought to be discretionary considering liquidity and transactions costs. During 1997 and 1998, the Swedish options exchange (OM) launched some regulatory changes in the design of the OMX-index options market. One intention with the changes was to obtain a coarser strike price interval for the index options, aiming for a more balanced demand for the outstanding contracts. This study introduces the Hirschman - Herfindahl index as a measure of the degree of concentration in open interest among different option contracts. The contributions to previous research consist of using this index to measure concentration in open interest, analysing the time series characteristics of the index, as well as investigating whether the changes in exchange rules affect concentration. Some evidence in favour of the hypothesis that the altered strike price intervals have reduced concentration in option open interest is found. Controlling for other factors, which potentially might influence open interest concentration, the widening of the strike price intervals induces a significant decrease in the concentration of put open interest. However, a similar (significant) effect cannot be found with respect to the concentration of call open interest.
期权市场的最优设计是什么?从投资者和期权交易所的角度来看,它应该是一个不同合约的供需平衡的市场,在不同合约的交易之间的选择应该是酌情考虑流动性和交易成本的。在1997年和1998年期间,瑞典期权交易所(OM)对omx指数期权市场的设计进行了一些监管改革。这样做的一个目的是为指数期权获得一个更粗的执行价格区间,旨在使未偿合约的需求更加平衡。本研究引入赫希曼-赫芬达尔指数作为衡量不同期权合约间未平仓合约集中程度的指标。对以往研究的贡献包括使用该指数来衡量公开权益的浓度,分析该指数的时间序列特征,以及调查交换规则的变化是否影响浓度。一些证据支持假设,即改变的行权价格区间降低了期权持仓的集中程度。控制其他可能影响未平仓期权集中的因素后,行权价格区间的扩大导致未平仓期权集中的显著下降。然而,在看涨未平仓期权的集中方面,没有发现类似的(显著的)效应。
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引用次数: 2
When Will Controlling Shareholder Expropriate Investors? Cash Flows Right and Investment Opportunity Perspective 控股股东何时会侵占投资者?现金流量权与投资机会视角
Pub Date : 2003-05-11 DOI: 10.2139/ssrn.392003
K. Chan, Shing-yang Hu, Yanzhi Wang
In this paper, we examine the relationship among cash flow rights, investment opportunities and firm values. We find that the opportunities to invest positive NPV projects will eliminate the positive effect of cash flow rights on firm values. However, when cash flow rights are relatively low, investment opportunities will not affect the positive relationship between cash flow rights and firm values. On the other hand, when cash flow rights are relatively high, cash flow rights do not influence firm values given the investment opportunities. As a result, the impact of investment opportunities on the cash flow right effect depends on the level of cash flow rights. These results suggest a non-linear relationship between cash flow right of the controlling shareholder and firm valuation.
本文考察了现金流权、投资机会和企业价值三者之间的关系。我们发现,投资净现值为正的项目的机会将消除现金流权对企业价值的积极影响。然而,当现金流权相对较低时,投资机会不会影响现金流权与企业价值之间的正相关关系。另一方面,当现金流权相对较高时,考虑到投资机会,现金流权不影响企业价值。因此,投资机会对现金流权效应的影响取决于现金流权的水平。这些结果表明,控股股东现金流权与企业估值之间存在非线性关系。
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引用次数: 5
The Cost of Trade Execution Services in Futures Markets 期货市场交易执行服务的成本
Pub Date : 2003-04-26 DOI: 10.2139/ssrn.391689
L. Bortoli, A. Frino, Elvis Jarnecic
This paper provides new evidence on the magnitude and determinants of brokerage commissions in futures markets using a sample of brokerage fees charged to transactions on the Sydney Futures Exchange. Commission fees charged on futures trades average 0.002 percent of transaction value. This is up to 120 times smaller than the magnitude of brokerage fees charged in stock markets, and considerably lower than the magnitude of brokerage fees assumed for futures markets in previous research. Consistent with existing studies based on stock markets, commissions charged per contract decrease with order size reflecting economies of scale in the provision of brokerage services in futures markets. Commission rates are positively related to bid-ask spreads and price volatility, which proxy for the probability of execution error costs and execution difficulty, respectively. The identity of the broker is a significant determinant of commissions reflecting different pricing schedules across brokers. Finally, the sample period examined in this study covered the period of transition to electronic trading on the Sydney Futures Exchange. There is strong evidence that the introduction of electronic trading is associated with lower brokerage commissions relative to floor traded markets.
本文利用悉尼期货交易所收取的经纪费用样本,为期货市场经纪佣金的大小和决定因素提供了新的证据。期货交易的佣金平均为交易价值的0.002%。这比股票市场收取的经纪费用少120倍,比之前研究中假设的期货市场的经纪费用要低得多。与基于股票市场的现有研究一致,每份合约收取的佣金随着订单规模的减少而减少,反映了期货市场提供经纪服务的规模经济。佣金率与买卖价差和价格波动呈正相关,分别代表执行错误成本和执行难度的概率。经纪人的身份是佣金的重要决定因素,反映了经纪人之间不同的定价时间表。最后,本研究的样本期涵盖了悉尼期货交易所向电子交易过渡的时期。有强有力的证据表明,相对于场内交易市场,电子交易的引入与较低的经纪佣金有关。
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引用次数: 1
An Analysis of Relative Return Behavior: Reits vs Stocks 相对收益行为分析:房地产投资信托基金与股票
Pub Date : 2003-04-26 DOI: 10.2139/ssrn.391687
Jorg Bley, Dennis Olson
We have analyzed the return behavior of the equity REIT, mortgage REIT, and SP500 indices using monthly data for the period of 1972-2001. Following a large monthly gain, investors can benefit by adopting a momentum buying strategy for stocks or mortgage for REITs, but not for equity REITs. Investors can also profitably employ a mean reversion strategy for any of the three indices. They would wait for a large decline and then buy the index and hold it for six months. Significant calendar effects were found for both REIT and stock indices involving positive January, and negative August and October effects, although there are some differences in seasonal effects between REITs and stocks. The correlation coefficients between all three asset classes are similar, but the relationship between stocks and equity REITs has lessened over time. We also show that equity REITs dominate mortgage REITs on a risk-return basis and that REITs compare favorably with stocks. Our findings suggest that equity REITs can enhance the risk-return relationship of an investment portfolio and should be considered as a major asset class just like stocks or bonds.
我们利用1972-2001年期间的月度数据分析了股票型房地产投资信托基金、抵押型房地产投资信托基金和标准普尔500指数的回报行为。在月度大幅上涨后,投资者可以通过对房地产投资信托基金的股票或抵押贷款采取动量买入策略而受益,但对股票房地产投资信托基金则不适用。投资者还可以对这三个指数中的任何一个采用均值回归策略,从而获利。他们会等待股市大幅下跌,然后买入该指数,并持有6个月。REIT和股票指数均存在显著的日历效应,包括1月的正效应,8月和10月的负效应,尽管REIT和股票之间的季节性效应存在一些差异。这三种资产类别之间的相关系数是相似的,但股票和股票REITs之间的关系随着时间的推移而减弱。我们还表明,在风险回报的基础上,股权房地产投资信托基金主导抵押房地产投资信托基金,并且房地产投资信托基金与股票相比更具优势。我们的研究结果表明,股权REITs可以增强投资组合的风险收益关系,应该像股票或债券一样被视为主要的资产类别。
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引用次数: 13
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