tail dependence and diversification benefits in emerging market stocks an extreme value theory approach this article examines tail dependence the benefits of diversification and the relation between the two for emerging stock markets we find most emerging equity markets are independent in limiting joint extremes however the dependence in finite levels of extremes is still much stronger than the dependence implied by multivariate normality therefore simple correlation analysis can lead to gross underestimation of the chances of joint crashes in multiple markets assuming risk averse investors guarding against extreme losses diversification benefits are measured for each two country optimal portfolio by the reduction in quantile risk measures such as value at risk and expected shortfall relative to an undiversified portfolio it is shown that tail dependence measures developed from multivariate extreme value theory are negatively related to diversification benefits and more importantly can explain diversification benefits better than the correlation coefficient at the most extreme quantiles

debt bargaining and credibility in firm supplier relationships abstract we examine optimal leverage for a downstream firm relying on implicit self enforcing contracts with a supplier performing a leveraged recapitalization prior to bargaining increases the firm s share of total surplus however the resulting debt overhang limits the range of credible bonuses resulting in low input quality optimal financial structure trades off bargaining benefits of debt with inefficiency resulting from overhang consistent with empirical evidence the model predicts that leverage increases with supplier bargaining power e g unionization rates and decreases with utilization of non verifiable inputs e g human capital

dynamic incentives and retirement abstract this paper examines multi period compensation contracts when retirement is anticipated short term contracts in long term employment relationships are equivalent to a long term renegotiation proof contract the dynamic of incentive rates is determined by i how and in which periods managerial effort affects the contractible performance measures and by ii the time series correlation of error terms in performance reports the model explains why long term investments can decrease while incentive rates increase as managers approach retirement earnings persistence is negatively associated to earnings based incentive rates but towards retirement high earnings persistence implies increasing earnings based incentive rates

outsiders at the bank of england s mpc the monetary policy committee mpc of the bank of england which was established in may 1997 consists of five internal and four external members we study the voting record and show that insiders dissent rarely and typically for higher rather than lower rates whereas outsiders dissent more often prefer lower rates and disagree with the majority when economic growth slows moreover their dissents forecast future interest rate changes we show that a model in which outsiders dislike output below potential more than output above replicates the observed voting pattern well

international stock market linkages evidence from the pre and post october 1987 period abstract this paper uses recent developments in the theory of cointegration to provide new methods of testing the linkage and dynamic interactions among stock market movements our findings are in sharp contrast with previous research which discovered strong interdependence among national stock markets prior to october 1987 for the post october 1987 period however our results show that the degree of international co movements among stock price indices has increased substantially with the nikkei index the only exception furthermore the us stock market is found to have a considerable impact on the french german and uk markets in the post crash period we also find the response of the french german and uk markets to us stock market innovations to be consistent with the view of cross border informationally efficient stock markets finally we find the japanese equity market performance to have no links with both the us stock market and the stock markets in france germany and uk during the pre and post october crash period

a wavelet analysis of capital markets integration in latin america the continuous wavelet transform analysis may provide a rich and flexible framework for the analysis of time series which exhibit less stable statistical properties such as the ones describing the dynamic trajectory of capital markets in contrast to the fourier analysis wavelet transform preserves information on both time and frequency we provide a summary of the most important features of this framework by involving the concept of coherence as well as its partial and multiple forms we analyse the connections between santiago stock exchange mexican stock exchange and bm fbovespa sao paulo stock exchange for a time span which covers the 23 september 2003 12 march 2014 period we highlight the existence of several significant forces of regional integration and of a short to medium run synchronization process between these markets we conclude that deeper structural and institutional reforms are required in order to enhance the sustainable development and more profound integration of these markets

common stochastic trends in international stock markets abstract this paper presents evidence concerning the number of common stochastic trends in the equity markets of the u s japan england germany and canada monthly and quarterly data from january 1974 through august 1990 on morgan stanley s capital international indices are used to compute johansen 1990 tests for common trends the results indicate the presence of a single common trend driving these countries stock markets estimates of the factor loadings suggest that this trend is most important in the japanese market and least important in the canadian market to interpret this evidence the paper demonstrates that under weak conditions the unit root and cointegration structure of stock prices should mirror the unit root and cointegration structure of their dividend payments the paper tests this prediction by constructing national dividend series from capital international s dividend yield data as well as by using gnp data as with stock prices the evidence points to a single common trend although the stochastic properties and relative importance of this trend differs somewhat from the trend in stock prices

cointegration and market efficiency abstract recently many economists have asserted that asset prices determined in efficient asset markets cannot be cointegrated we show that there is no general equivalence between the existence of arbitrage opportunities and cointegration or for that matter a lack of cointegration whether asset prices are cointegrated is a function of the relevant model we first show a convenient way to calculate the cointegrating vector based on necessary and sufficient conditions for cointegration we then examine particular cases including exchange rates interest rates and spot and forward exchange rates and asset prices with incoem flows reinvested and not reinvested jel f31

default correlation at the sovereign level evidence from some latin american markets using the eruption of argentina debt crisis in 2001 as a natural experiment we investigated the correlated default at the sovereign level for some latin american countries daily closing market quotes for sovereign credit default swaps cds of argentina brazil mexico and venezuela were obtained from credittrade database using copula approach we observed increased dependences among sovereign cds markets during the crisis period their dependence structures were found to be asymmetric moreover the degree of credit contagion was related to the creditworthiness of the country this study also discussed the implications of these findings for policymakers

subjective performance indicators and discretionary bonus pools key indicators of managerial performance are frequently subjective that is they are difficult to specify and or verify for contracting purposes when a principal must rely on subjective information to create incentives for a group of agents discretionary bonus pools are shown to be optimal mechanisms despite their optimality however discretionary bonus pools entail an additional agency cost relative to the benchmark of optimal contracts based on objective and verifiable information our analysis identifies circumstances under which this additional agency cost is small for example the subjective information signals are precise or the number of agents participating in the bonus pool increases when incentive schemes can be based on both objective and subjective performance indicators the relative weights to be placed on alternative signals are shown to differ from the ones predicted by models with objective signals only we also demonstrate that correlation in measurement errors has a different impact on the structure of optimal incentive schemes when the performance indicators are merely subjective

is global diversification rational evidence from emerging equity markets through mixed copula approach in this article we aim to model the level and structure of the dependence between the world s leading stock markets and those of the emerging market groups europe latin america and far east to this end we use a mixture model of gaussian gumbel and gumbel survival copulas our results indicate that none of the pairs of stock markets exhibit a right tail dependence structure all valid models exhibit a mixture of gaussian and left tail dependence structure our findings imply that gaussian dependence structure is dominant in most of the models the emerging equity markets in the european region exhibit the most significant dependence structure with the world leaders furthermore most of the emerging equity markets have a significant dependence structure with the us stock market we further compare our findings with the results of the conventional correlation coefficients and conclude the importance of using copula models in analysing the portfolio diversification opportunities our findings overall i

international diversification an extreme value approach abstract international diversification has costs and benefits depending on the degree of asset dependence we study international diversification with two dependence measures correlations and extreme dependence we discover that dependence has typically increased over time and document mixed evidence on heavy tails in individual countries moreover we uncover three additional findings related to dependence first the timing of downside risk differs depending on the region surprisingly recent latin american returns exhibit little downside risk second latin america exhibits a great deal of correlation complexity third according to the empirical results correlation does not vary with returns but extreme dependence does vary monotonically with regional returns our results are consistent with a tradeoff between international diversification and systemic risk they also suggest international limits to diversification and that international investors demand some compensation for joint downside risk during extreme events

an empirical study of the asymmetric cointegration relationships among the chinese stock markets the enders and siklos asymmetric cointegration test is employed to examine the long run asymmetric equilibrium relationships between the chinese shanghai and shenzhen stock markets three samples are adopted which are the whole sample october 1992 to september 2002 the first subsample before b shares were opened up to the chinese public october 1992 to february 2001 and the second subsample after b shares were opened up february 2001 to september 2002 the estimated results are as follows first when the conventional engle granger symmetric cointegration test is used only the a shares in shanghai and shenghen stock exchange market are cointegrated when using the whole sample and the first subsample however with the enders siklos m tar asymmetric cointegration test shenzhen a and b shares stock prices have an asymmetric cointegration relationship after b shares were open suggesting that openness increases the market efficiency furthermore the two a shares in shanghai and shenzhen stock exc

incentives between firms and within this paper reviews the significant progress in agency theory i e the economic theory of incentives during the 1990s with an eye toward applications to supply transactions i emphasize six recent models in three pairs 1 new foundations for the theory of incentive contracts 2 new directions in incentive theory and 3 new applications to supply transactions by reviewing these six models i hope to establish three things first the theory of incentive contracts needed and received new foundations second new directions in incentive theory teach us that incentive contracts are not the only source of incentives finally and especially relevant to supply transactions the integration decision is an instrument in the incentive problem

central bank communication and monetary policy a survey of theory and evidence over the last two decades communication has become an increasingly important aspect of monetary policy these real world developments have spawned a huge new scholarly literature on central bank communication mostly empirical and almost all of it written in this decade we survey this ever growing literature the evidence suggests that communication can be an important and powerful part of the central bank s toolkit since it has the ability to move financial markets to enhance the predictability of monetary policy decisions and potentially to help achieve central banks macroeconomic objectives however the large variation in communication strategies across central banks suggests that a consensus has yet to emerge on what constitutes an optimal communication strategy

communication by central bank committee members different strategies same effectiveness the paper assesses the communication strategies of the federal reserve the bank of england and the european central bank and their effectiveness we find that the effectiveness of communication is not independent from the decision making process the paper shows that the federal reserve has been pursuing a highly individualistic communication strategy amid a collegial approach to decision making while the bank of england is using a collegial communication strategy and highly individualistic decision making the european central bank ecb has chosen a collegial approach both in its communication and in its decision making assessing these strategies we find that predictability of policy decisions and the responsiveness of financial markets to communication are equally good for the federal reserve and the ecb this suggests that there may not be a single best approach to designing a central bank communication strategy

is the mpc s voting record informative about future uk monetary policy it is shown that the voting record of the monetary policy committee of the bank of england helps predict future policy rate changes this result is robust to the inclusion of market participants expectations as measured by the slope of the term structure of money market rates and interest rate futures moreover expectations seem to adjust to the information contained in the voting record which suggests that publishing the minutes of mpc meetings increases the transparency of monetary policy

the provision of incentives in firms i ncentives are the essence of economics despite many wide ranging claims about their supposed importance there has been little empirical assessment of incentive provision for workers the purpose of this paper is to critically overview existing work on the provision of incentives since the interests of workers and their employers are not always aligned a large theoretical literature has emphasized how firms design compensation contracts to induce employees to operate in the firm s interest this literature has reached into many areas of compensation and has pointed to a multitude of different mechanisms that can be used to induce workers to act in the interests of their employers these include piece rates options discretionary bonuses promotions profit sharing efficiency wages deferred compensation and so on my objective here is to evaluate this literature in the light of a growing empirical literature on compensation where possible i will address the literature from two perspectives first an underlying assumption of this literature is that individuals respond to contracts that reward performance accordingly i consider whether agents behave in this way and whether these responses are always in the firm s interest second i address whether firms write contracts with these responses in mind in other words do contracts look like the predictions of the theory incentives are provided to workers

modelling the linkages between us and latin american stock markets this paper examines the linkages between us and latin american stock markets during the 1995 2002 period using recently developed cointegration techniques that allow for structural shifts in the long run relationship results suggest that when conventional cointegration tests are applied a long run relationship is found only in the cases of brazil and mexico for the dow jones dj index and in the case of brazil for the standard and poor s 500 sp500 index in contrast if the possibility of structural breaks is introduced strong evidence is found in favour of such a relationship between the argentine chilean and venezuelan indices and the dj index after the 1998 financial turmoil and between the brazilian and mexican indices and the dj index before such turbulence while some marginal cointegration is detected between the mexican and dj indices from february 1998 additionally evidence is found of a cointegrating relationship between the argentine chilean and mexican indices and the sp500 index f

subjective evaluations with performance feedback this paper models two key roles of subjective performance evaluations their incentive role and their feedback role the paper shows that the feedback role makes subjective pay feasible even without repeated interaction as long as there exists some veri able measure of performance it also shows that while subjective pay is helpful it cannot achieve full e ciency however fully e cient incentives are achievable if the rm can commit to a forced distribution of evaluations and employs a continuum of workers with a small number of workers a forced distribution is valuable only if the veri able measure is poor

evolution in dynamic linkages across daily national stock indexes abstract this article investigates how dynamic linkages among the daily rates of return of eight national stock indexes have evolved since 1972 a dynamic simultaneous equations model is estimated to describe the contemporaneous and lead lag relationships across national equity markets over three different years 1972 1980 and 1987 results reveal growing market interdependence within the same geographical region over time while there are many significant intermarket relationships within the same 24 hour period there are few significant lagged responses across markets beyond 24 hours this suggests a high degree of international market efficiency furthermore japan s market influence has been growing to rival that of the usa

identifying and testing models of managerial compensation this article analyses the identification and empirical content of the pure moral hazard pmh and the hybrid moral hazard hmh principal agent models the pmh model has hidden actions while the hmh model has hidden information in addition to hidden actions in both models agents are risk averse and principals are risk neutral the article derives the equilibrium restrictions from the optimal contract and uses the restrictions to show that the models have empirical content for any given risk aversion parameter the models other parameters are non parametrically point identified the risk aversion parameter and hence the model are however only partially identified management s ability to manipulate accounting reports arises endogenously within hmh models but not in all versions of pmh models we use our framework to investigate whether shareholders contract with management recognizing that accounting reports are susceptible to manipulation and therefore endogenous to the incentives offered to management the data reject all models in which accounting reports are verifiable furthermore the version of the pmh in which accounting reports can be manipulated is rejected if expected compensation is restricted to be positive

dynamic relationships between crude oil prices and socially responsible investing in brazil evidence for linear and non linear causality abstractrecent years have witnessed an increasing interest in socially responsible investing sri reflecting investors growing awareness of social environmental ethical and corporate governance issues at the same time the effect of oil price shocks on stock price returns has become a prominent issue due to surges in energy prices using the brazilian corporate sustainability index ise as a benchmark for socially responsible investments in the brazilian stock market the present study extends the understandings on the impact of oil prices on stock price behaviour focusing on a new class of assets those from socially responsible firms to this end apart from conventional linear causality approaches we apply a nonparametric test by diks and panchenko dp on daily data spanning from january 2008 to december 2015 to test for non linear causality before and after controlling for conditional heteroscedasticity our findings show that in spite of their efforts to become more socially responsible

cointegration and predictability of asset prices abstract this article argues that whatever concerns one might have about the identification of a cointegrating relationship with market inefficiency cointegration tests can still be usefully employed to investigate the predictability of asset prices we examine the case of n dimensional systems and show that the standard assumption made in the literature that cointegration implies predictability of all n asset prices is not valid in the presence of r cointegrating vectors only r prices are predictable and standard wald or lm tests carried out within johansen s maximum likelihood ml framework can be used to establish for which prices unpredictability does not hold similarly one can distinguish between joint unpredictability in the short and long run when asset prices are driven by fundamentals

an extreme value approach to estimating volatility and value at risk this article determines the type of asymptotic distribution for the extreme changes in u s treasury yields the thin tailed gumbel and exponential distributions are strongly rejected against the fat tailed frechet and pareto distributions the empirical results indicate that the volatility of maximal and minimal changes in interest rates declines as time to maturity rises yielding a downward sloping volatility curve for the extremes the article proposes an extreme value approach to estimating value at risk and shows that the statistical theory of extremes provides a more accurate approach for risk management and value at risk var calculations than the standard models

the market for news we investigate the market for news under two assumptions that readers hold beliefs which they like to see confirmed and that newspapers can slant stories toward these beliefs we show that on the topics where readers share common beliefs one should not expect accuracy even from competitive media competition results in lower prices but common slanting toward reader biases on topics where reader beliefs diverge such as politically divisive issues however newspapers segment the market and slant toward extreme positions yet in the aggregate a reader with access to all news sources could get an unbiased perspective generally speaking reader heterogeneity is more important for accuracy in media than competition per se

linkages in international stock markets evidence from a classification procedure in this article we propose a new approach to evaluate the predictable components in stock indices using a boosting based classification technique and we use this method to examine causality among the three main stock market indices in the world during periods of large positive and negative price changes the empirical evidence seems to indicate that the standard poors 500 index contains incremental information that is not present in either the ftse 100 index financial times stock exchange index or the nikkei 225 index and that could be used to enhance the predictability of the large positive and negative returns in the three main stock market indices in the world this in turn would suggest a causality relationship running from the standard poors 500 index to both the ftse 100 and the nikkei 225 indices

implicit contracts and the explanatory power of top executive compensation for future performance recent research suggests that implicit incentive contracts may be based on performance measures that are observable only to the contracting parties we derive and test implications of this insight for the relationship between executive compensation and firm performance if corporate boards optimally use both observable and unobservable to outsiders measures of executive performance and the unobservable measures are correlated with future firm performance then unexplained variation in current compensation should predict future variation in firm performance further compensation should be more positively associated with future performance when observable measures are less useful for contracting our results are consistent with these hypotheses

federal reserve communications and newswire coverage in this article we explore the determinants of newswire coverage of federal reserve fed communications our sample covers all 344 forward looking communications made in the period may 1999 to may 2004 we find first that there is a higher likelihood of newswire coverage for monetary policy reports and speeches by chairman greenspan than for testimony and speeches by other fed members furthermore communications with an explicit monetary policy inclination or tone different from the current interest rate path are particularly likely to be covered however the release of important macroeconomic news reduces the likelihood of newswire coverage second speeches by regional fed presidents are relatively less likely to be reported than speeches by board members nevertheless newswire coverage of fed president speeches is more likely if central bank communication is stale finally our results indicate that ben bernanke played a distinguished role even before his chairmanship

monetary policy in the media just like private companies depend crucially on their ability to reach customers policymakers must communicate with private agents to be successful and much of this communication is channeled through the media this is especially true for central banks which need to build credibility among the general public this paper analyses how favorably the print media report about the european central bank s ecb monetary policy decisions favorableness is inter alia influenced by the amount of information communicated by the ecb there are however also indications of a critical monitoring role of the media which reports more negatively when inflation exceeds the inflation target

purdah on the rationale for central bank silence around policy meetings many central banks share the practice of purdah a guideline of abstaining from communication around policy meetings although seemingly contradicting the virtue of transparency by withholding information precisely when it is sought after intensely it has been justified on grounds that such communication may create excessive market volatility this paper assesses the purdah for the federal reserve and confirms that financial markets are substantially more sensitive to central bank communication around policy meetings short term interest rates react three to four times more strongly in the purdah before federal open market committee meetings than otherwise and volatility increases compared to a reduction otherwise

additional evidence on bonus plans and income management abstract we extend healy 1985 by examining the relation between discretionary accruals and bonus plan bounds for a sample of 102 firms for the 1980 1990 period contrary to healy we find that when earnings before discretionary accruals fall below the lower bound managers select income increasing discretionary accruals and vice versa we believe that our results are more consistent with the income smoothing hypothesis than with healy s bonus hypothesis however mechanical selection bias in portfolio formation cannot be entirely ruled out as an alternative explanation for our results

why do markets move together an investigation of u s japan stock return comovements this article explores the fundamental factors that affect cross country stock return correlations using transactions data from 1988 to 1992 we construct overnight and intraday returns for a portfolio of japanese stocks using their nyse traded american depository receipts adrs and a matched sample portfolio of u s stocks we find that u s macroeconomic announcements shocks to the yen dollar foreign exchange rate and treasury bill returns and industry effects have no measurable influence on u s and japanese return correlations however large shocks to broadbased market indices nikkei stock average and standard and poor s 500 stock index positively impact both the magnitude and persistence of the return correlations stock return cross country covariances play a key role in international finance changes in these covariances affect the volatility of portfolios and asset prices as these covariances increase one expects that a fewer domestic risks are internationally diversifiable so portfolio volatility increases b the risk premium on the world market portfolio increases 1 c the cost of capital increases for individual firms and d the domestic version of the capm becomes increasingly inadequate 2 despite the important economic consequences of changes in cross country covariances the determinants of the levels and dynamics of these covariances have been little studied from an academic

implications of rational inattention abstract a constraint that actions can depend on observations only through a communication channel with finite shannon capacity is shown to be able to play a role very similar to that of a signal extraction problem or an adjustment cost in standard control problems the resulting theory looks enough like familiar dynamic rational expectations theories to suggest that it might be useful and practical while the implications for policy are different enough to be interesting

volatility states and international diversification of international stock markets this study uses a markov switching technique to identify the volatility state of international stock markets further we consider four possible state combinations of the individual and world stock markets to examine an interesting issue regarding the relationship between international diversification and market volatility last we adopt a framework based on the state varying correlation to establish a more efficient international investment strategy our empirical results are consistent with the two following notions first the situation of both the individual and world stock markets during high volatility states will be associated with the minimum benefit of risk reduction from international diversification and a maximum cross market correlation second by incorporating the character of state varying correlation into the establishment of an international portfolio we can create a more efficient investment strategy with less risk or greater return for a given risk