variations in trading volume return volatility and trading costs evidence on recent price formation models patterns in stock market trading volume trading costs and return volatility are examined using new york stock exchange data from 1988 intraday test results indicate that for actively traded firms trading volume adverse selection costs and return volatility are higher in the first half hour of the day this evidence is inconsistent with the admati and pfleiderer 1988 model which predicts that trading costs are low when volume and return volatility are high interday test results show that for actively traded firms trading volume is low and adverse selection costs are high on monday which is consistent with the predictions of the foster and viswanathan 1990 model academics investors and regulators alike are now intensively focused upon understanding the volatility of asset returns and its relation to trading volume this interest was undoubtedly piqued by the market break of october 1987 a time during which volatility and trading volume reached unprecedented levels but even beforehand researchers observed regular differences in the return process for various hours of the day and days of the week research concerning temporal patterns in stock market volatility and volume falls in two groups studies that document observed patterns and studies that develop models to predict patterns among the studies in the first group are oldfield and rogalski 1980 french and roll 1986 stoll and whaley 1990 harris 1986 and wood mcinish and ord 1985 who report evidence on seasonalities in daily and weekly return variances among the regularities that have been documented using interday data is that volatility is higher when the market is open than when it is closed oldfield and rogalski 1980 french and roll 1986 and stoll and whaley 1990 for example point out significant differences in return volatility between trading

the value of tax shields is equal to the present value of tax shields abstract fernandez 2004b the value of tax shields is not equal to the present value of tax shields journal of financial economics 73 145 165 argues that the present value effect of the tax saving on debt cannot be calculated as simply the present value of the tax shields associated with interest this contradicts standard results in the literature it implies that even though the capital market is complete value additivity is violated as a consequence adjusted present value formulae of a standard sort cannot be used also fernandez s argument implies that the value of the tax saving differs from conventional estimates by a considerable amount we reconcile fernandez s results with standard valuation formulae for the tax saving from debt we show that as one would expect the value of the debt tax saving is the present value of the tax savings from interest the apparent violation of value additivity in the fernandez paper comes from mixing the miles and ezzell and miller and modigliani leverage policies

the value of tax shields is not equal to the present value of tax shields abstract the value of tax shields is the difference between the present values of two different cash flows each with their own risk the present value of taxes for the unlevered company and the present value of taxes for the levered company for constant growth companies the value of tax shields in a world with no leverage cost is the present value of the debt times the tax rate times the unlevered cost of equity discounted at the unlevered cost of equity this result arises as the difference of two present values and does not mean that the appropriate discount for tax shields is the unlevered cost of equity

limit order submission strategies under asymmetric information abstract this paper provides evidence that informed traders dominate the response of limit order submissions to shocks in a pure limit order market in the market we study informed traders are highly sensitive to spreads volatility momentum and depth by contrast uninformed traders are relatively insensitive to all these market conditions the dominance of the informed over limit order submissions is magnified by contrasts between them and the uninformed in the use of aggressively priced limit orders

nonlinear dynamics in deviations from the law of one price a broad based empirical study abstract in this paper we test empirically the validity of the law of one price using data for five major bilateral us dollar exchange rates and nine goods sectors during the recent floating exchange rate regime since the early 1970s using threshold autoregressive models we find strong evidence of nonlinear mean reversion in deviations from the law of one price with plausible convergence speeds consistent with theoretical arguments on international goods markets arbitrage under transactions costs and with an emerging strand of empirical literature these results contribute towards forming a consensus view in favor of discrete regime switching in deviations from the law of one price and the presence of differing nonzero transactions costs across a broad range of goods and countries

weather and intraday patterns in stock returns and trading activity abstract we examine the relation between weather in new york city and intraday returns and trading patterns of nyse stocks while stock returns are found to be generally lower on cloudier days cloud cover has a significant influence on stock returns only at the market open there are significantly more seller initiated trades when there is more cloud cover at the market open which is consistent with the return results cloudy skies are associated with higher volatility and less market depth over the entire trading day finally cloud cover is not significantly correlated with spread measures and turnover ratios the findings overall suggest that weather has a significant influence on investors intraday trading behavior

evaluation of a hybrid seed contract between smallholders and a multinational company in east java indonesia this article evaluates a hybrid seed contract between indonesian smallholders and pioneer hybrid international a transaction cost approach was used to analyse contract participation total farm gross margins and labour and chemical use the empirical results suggest a the contract favours farmers with more irrigated land b the contract improved returns to farm capital and was welfare improving c the contract increased the demand for non family labour particularly female labour and d the contract increased the intensity of chemical use the success of the contract was attributed to the nature of the contracting process which was between pioneer and grower groups and not individual smallholders

estimating households vulnerability to idiosyncratic and covariate shocks a novel method applied in madagascar households in developing countries are frequently hit by severe idiosyncratic and covariate shocks leading to high consumption volatility a household s currently observed poverty status might therefore not be a good indicator of the household s general vulnerability to poverty in the recent years there has been an emerging literature on the concept and empirical analysis of vulnerability but because of strong data requirements for vulnerability analysis and limited availability of panel and shock data for developing countries static poverty analysis still dominates empirical vulnerability studies in this paper we propose a simple method to empirically assess the impact of idiosyncratic and covariate shocks on households vulnerability which can be applied in a wide context as it relies on more commonly available cross sectional or short panel data we empirically illustrate our approach for madagascar we show that covariate shocks have a relatively higher impact on rural households whereas idiosyncratic shocks have a relatively higher impact on urban households vulnerability

a theory of trading volume a theory of trading volume is developed based on assumptions that market agents frequently revise their demand prices and randomly encounter potential trading partners the model describes two distinct ways informational events affect trading volume one is consistent with conjectures made by empirical researchers that investor disagreement leads to increased trading but the observation of abnormal trading volume does not necessarily imply disagreement and volume can increase even if investors interpret the information identically if they also have had divergent prior expectations simulation tests support the model and are used to contrast the random pairing environment with costless market clearing volume is lower in the costly market and volume increases caused by an informational event persist after the event period this is consistent with existing empirical evidence and suggests that markets do not immediately clear all orders or that investors have demands to recontract

using maimonides rule to estimate the effect of class size on scholastic achievement the twelfth century rabbinic scholar maimonides proposed a maximum class size of 40 this same maximum induces a nonlinear and nonmonotonic relationship between grade enrollment and class size in israeli public schools today maimonides rule of 40 is used here to construct instrumental variables estimates of effects of class size on test scores the resulting identiecation strategy can be viewed as an application of donald campbell s regression discontinuity design to the class size question the estimates show that reducing class size induces a signiecant and substantial increase in test scores for fourth and efth graders although not for third graders when asked about their views on class size in surveys parents and teachers generally report that they prefer smaller classes this may be because those involved with teaching believe that smaller classes promote student learning or simply because smaller classes offer a more pleasant environment for the pupils and teachers who are in them mueller chase and walden 1988 social scientists and school administrators also have a longstanding interest in the class size question class size is often thought to be easier to manipulate than other school inputs and it is a variable at the heart of policy debates on school quality and the allocation of school resources in many countries see e g robinson 1990 for the united states ofsted 1995 for the united kingdom and moshel ravid 1995 for israel this broad interest in the consequences of changing class size

the behaviour of the real exchange rate evidence from regression quantiles abstract we test for mean reversion in real exchange rates using a recently developed unit root test for non normal processes based on quantile autoregression inference in semi parametric and non parametric settings the quantile regression approach allows us to directly capture the impact of different magnitudes of shocks that hit the real exchange rate conditional on its past history and can detect asymmetric dynamic adjustment of the real exchange rate towards its long run equilibrium it therefore provides a detailed mapping of the real exchange rate behaviour while being a robust alternative to previous unit root tests the latter is confirmed by a simulation analysis comparing the power of the alternative tests as concerns the real exchange rate our results suggest that large shocks tend to induce strong mean reverting tendencies in the exchange rate with half lives less than one year in the extreme quantiles mean reversion is faster when large shocks originate at points of large real exchange rate deviations from the long run equilibrium however in the absence of shocks no mean reversion is observed finally we report asymmetries in the dynamic adjustment of the rer

common persistence in conditional variances since the introduction of the autoregressive conditional heteroskedastic arch model in engle 1982 numerous applications of this modeling strategy have already appeared a common finding in many of these studies with high frequency financial or monetary data concerns the presence of an approximate unit root in the autoregressive polynomial in the univariate time series representation for the conditional second order moments of the process as in the so called integrated generalized arch igarch class of models proposed in engle and bollerslev 1986 in the igarch models shocks to the conditional variance are persistent in the sense that they remain important for forecasts of all horizons this idea is readily extended to a multivariate framework even though many time series may exhibit persistence in variance it is likely that several different variables share the same common long run component in that situation the variables are naturally defined to be co persistent in variance and the co persistent linear combination is interpretable as a long run relationship conditions for co persistence to occur in the multivariate linear garch model are presented these conditions parallel the conditions for linear co integration in the mean as developed by engle and granger 1987 the presence of co persistence has important implications for asset pricing relationships and in optimal portfolio allocation decisions an empirical example relating to the time series properties of nominal u s dollar exchange rates for the deutschemark and the british pound provides a simple illustration of the ideas

price volatility trading volume and market depth evidence from futures markets the relations between volume volatility and market depth in eight physical and financial futures markets are examined evidence suggests that linking volatility to total volume does not extract all information when volume is partitioned into expected and unexpected components the paper finds that unexpected volume shocks have a larger effect on volatility further the relation is asymmetric the impact of positive unexpected volume shocks on volatility is larger than the impact of negative shocks finally consistent with theories of market depth the study shows large open interest mitigates volatility

the economics of poverty traps and persistent poverty an asset based approach abstract longitudinal data on household living standards open the way to a deeper analysis of the nature and extent of poverty while a number of studies have exploited this type of data to distinguish transitory from more chronic forms of income or expenditure poverty this paper develops an asset based approach to poverty analysis that makes it possible to distinguish deep rooted persistent structural poverty from poverty that passes naturally with time due to systemic growth processes drawing on the economic theory of poverty traps and bifurcated accumulation strategies this paper briefly discusses some feasible estimation strategies for empirically identifying poverty traps and long term persistent structural poverty as well as relevant extensions of the popular foster greer thorbecke class of poverty measures the paper closes with reflections on how asset based poverty can be used to underwrite the design of persistent poverty reduction strategies

the stock market effect of air pollution evidence from china abstractin financial studies environmental stimuli such as sunshine temperature and daylight are often used as proxies for people s collective mood swings to test their effects on the stock market china has experienced serious air pollution problems in recent years and chinese public awareness of air pollution has soared in this paper we use china as a natural experiment to investigate the effect on stock returns of depressed moods induced by air pollution daily air pollution data from 2005 to 2014 are analysed and the results obtained from the empirical research show that a contemporaneous negative and a two day lagged positive relationship exists between air pollution levels and stock returns over this time period the relationship is mediated by the influence of air pollution on investment decisions the results also indicate that the effect is weakened for companies that protect air quality but no stronger effect is detected for polluting companies the findings imply that air pollution is a

large market shocks and abnormal closed end fund price behaviour abstract this paper investigates the short term price behaviour of closed end funds following eight large market wide shocks the findings from a sample of 63 funds continuously traded on the london stock exchange indicate that prices overreact relative to equilibrium given by net asset values the speed of reversion in discounts following market wide shocks is slower than that following fund specific shocks of a similar magnitude the post shock persistence in discounts is related more to the ease of arbitrage rather than to liquidity as proxied by fund size or to the speed of recovery in the broader market the discount decays more slowly for those funds that are difficult to arbitrage

potential pitfalls for the purchasing power parity puzzle sampling and specification biases in mean reversion tests of the law of one price the ppp puzzle is based on empirical evidence that international price differences for individual goods loop or baskets of goods ppp appear highly persistent or even nonstationary the present consensus is these price differences have a half life that is of the order of five years at best and infinity at worst this seems unreasonable in a world where transportation and transaction costs appear so low as to encourage arbitrage and the convergence of price gaps over much shorter horizons typically days or weeks however current empirics rely on a particular choice of methodology involving i relatively low frequency monthly quarterly or annual data and ii a linear model specification in fact these methodological choices are not innocent and they can be shown to bias analysis towards findings of slow convergence and a random walk intuitively if we suspect that the actual adjustment horizon is of the order of days then monthly and annual data cannot be expected to reveal it if we suspect arbitrage costs are high enough to produce a substantial band of inaction then a linear model will fail to support convergence if the process spends considerable time random walking in that band thus when testing for ppp or loop model specification and data sampling should not proceed without consideration of the actual institutional context and logistical framework of markets

stock market returns a note on temperature anomaly this study investigates whether stock market returns are related to temperature research in psychology has shown that temperature significantly affects mood and mood changes in turn cause behavioral changes evidence suggests that lower temperature can lead to aggression while higher temperature can lead to both apathy and aggression aggression could result in more risk taking while apathy could impede risk taking we therefore expect lower temperature to be related to higher stock returns and higher temperature to be related to higher or lower stock returns depending on the trade off between the two competing effects we examine many stock markets world wide and find a statistically significant negative correlation between temperature and returns across the whole range of temperature apathy dominates aggression when temperature is high the observed negative correlation is robust to alternative tests and retains its statistical significance after controlling for various known anomalies

vulnerability and poverty dynamics in vietnam drawing upon the vietnam household living standards survey vhlss data that cover the whole of vietnam in 2002 and 2004 ex ante measures of vulnerability are constructed these are then compared with static indicators of poverty i e the headcount ratio in a particular year detailed analyses of the panel data show that i in general vulnerability in 2002 translates into poverty in 2004 ii vulnerability of the poor tends to perpetuate their poverty and iii sections of the nonpoor but vulnerable slip into poverty durable reduction in poverty is conditional on i accurate identification of the vulnerable ii their sources of vulnerability and iii design of social safety nets that would enable the vulnerable to reduce risks and cope better with rapid integration of markets with the larger global economy

an analysis of contract farming in east java bali and lombok indonesia this article examines the emergence and benefits of contract farming in east java bali and lombok indonesia after a general review of contract farming in these regions three contracts for seed corn in east java seed rice in bali and broilers in lombok are described and analyzed using key informant interviews and household survey data a review of the contracts suggest that there is a wide array of contract types and this is related to the technical requirements of production and the associated costs probit analysis is used to identify factors contributing to smallholder participation in farm contracts and a two stage estimation process used to measure the effects of farm contracts on gross margins and labor use results indicate participation in contracts is influenced by farm size and other factors such as smallholder s age education and participation in farm groups contracts increased returns to capital for the seed corn and broiler contracts but not for the seed rice contract all three contracts influenced the types of labor used however none of them influenced total farm employment

terrorist attacks analyst sentiment and earnings forecasts we examine whether exogenous and extremely negative events such as terrorist attacks and mass shootings influence the sentiment and forecasts of sell side equity analysts we find that analysts w

is it the weather response abstract kamstra kramer and levi kkl in their comment seem to miss the main point of our paper many things are correlated with the seasons so it is difficult to distinguish between them when we try to explain the well known summer winter pattern in stock returns finding an isolated seasonal affective disorder sad effect without proper control variables does not disprove our point but strengthens it to sidestep all of the issues they raise and take our point to the extreme we show using plain vanilla regressions that the seasonal stock market pattern they attribute to sad can also be explained by variables like ice cream consumption or airline travel the new variations of sad variables onset and incidence kkl propose in their recent work for north america are even more problematic than the original sad variables we find that these new sad proxies are not significant in countries where according to kkl they should be canada and the united states

the political economy of expenditures by the peruvian social fund foncodes 1991 95 the peruvian social fund foncodes was created by president alberto fujimori in 1991 with the stated objectives of generating employment alleviating poverty and improving access to social services this article uses province level data on monthly expenditures socioeconomic indicators and electoral outcomes to analyze political influences on the timing and geographic distribution of foncodes expenditures between 1991 and 1995 i reach three main conclusions first these expenditures increased significantly before national elections second foncodes projects were directed at provinces in which the marginal political effect of expenditures was likely to be largest third these projects favored the poorest provinces which suggests that the program also had a redistributive function the results are robust to a large number of specifications and controls the peruvian data support predictions made in the literature on political business cycles as well as the literature on political influences on the allocation of discretionary funds

contract farming and smallholder outgrower schemes in less developed countries abstract some studies of outgrower schemes involving smallholders and public or private corporations in less developed countries suggest the potential value of such arrangements in facilitating transfer of technology access to markets and other benefits for growers a diverse literature is surveyed to see what economic and political questions have been raised which have a bearing on the issue of grower welfare in some cases existing literature or the author s own research provides adequate answers to the questions raised in others the need for further research is indicated some possible directions and methodologies for systematic comparative studies are suggested

anomalies weekend holiday turn of the month and intraday effects abstract this feature will report successful searches for disconfirming evidence economic anomalies as suggested by thomas kuhn an economic anomaly is a result inconsistent with the economics pa

value and capacity of tax shields an analysis of the slicing approach abstract correctly valuing tax shields has been a challenge in corporate valuation a recent study by liu 2009 introduces the slicing approach to separating the tax shield into the earned and unearned parts liu also shows that the mm results are wrong and claims that the slicing approach has finally resolved the issue of pricing tax shields thereby bringing closure to the topic however through careful analysis we refute liu s main claims and restore the mm results there are still open questions and the topic is not completely resolved as claimed in liu 2009

impact of contract farming on income linking small farmers packers and supermarkets in china summary this study compares contract and non contract growers of apples and green onions in shandong province china in order to explore the constraints on participation and the impact of contract farming on income we find little evidence that firms prefer to work with larger farms though all farms in the area are quite small using a heckman selection correction model we find that contract farming raises income even after controlling for observable and unobservable household characteristics these results suggest that contract farming can help raise small farm income though questions remain regarding the number of farmers that can be brought into such schemes 2009 elsevier ltd all rights reserved

a further investigation of the weekend effect in stock returns this study uses a longer time period and additional stocks to further investigate the weekend effect we find consistently negative monday returns 1 for the s p composite as early as 1928 2 for exchange traded stocks of firms of all sizes and 3 for actively traded over the counter otc stocks the otc results are based on bid prices and therefore appear to reject specialist related explanations for the 30 individual stocks of the dow jones industrial index the average correlation between friday and monday returns is positive and the highest of all pairs of successive days the latter finding is inconsistent with fairly general measurement error explanations some of the most puzzling empirical findings reported in recent years indicate that the distribution of common stock returns varies by day of the week most notably the average return for monday close friday to close monday is significantly negative cross 3 and french 6 find negative monday returns using the standard and poor s composite index and gibbons and hess 7 find negative monday returns for the 30 individual stocks of the dow jones industrial index 1 this negative monday return or weekend effect has yet to be explained this study undertakes a further investigation of the weekend effect in stock returns we examine additional time periods extending the total period covered to 55 years we examine additional stocks such as those of small low capitalization firms and those traded over the counter in all cases the data exhibit a weekend effect that is at least as strong as that reported in previous studies the study also readdresses potential explanations for the effect such as measurement error but concludes that none of these explanations is satisfactory the first section presents a history of the weekend effect from 1928 through 1982 based on the standard and poor s composite index we essentially double the length of the period beginning in 1953 examined by french 6 the results indicate consistently negative monday returns throughout the 55 year period during much of the 25 year period from 1928 through 1952 the new york stock exchange was open on saturdays so monday s return is then computed from saturday s close to monday s close 2 these returns for one day weekends are consistently negative and not significantly different from the two day weekend

income smoothing and consumption smoothing one way that risk averse households protect consumption levels is to borrow and use insurance mechanisms another way common in low income economies is to diversify economic activities and make conservative production and employment choices households thus tend toward limiting exposure only to shocks that can be handled with available credit and insurance typically both types of mechanisms are studied independently but much more can be learned by studying them together first we obtain a more complete picture of risks costs and insurance possibilities second it opens the way to considering biases in standard tests of credit and insurance

do stock markets react to soccer games a meta regression analysis this study applies meta regression analysis to aggregate a sample of 1126 empirical estimates of the stock market reaction to soccer matches collected from 37 primary studies our results indicate

oil palm boom contract farming and rural economic development village level evidence from indonesia summary contracts between companies and local communities have been used in indonesia for over 20 years to involve smallholder farmers in the emerging palm oil industry impacts of these contracts have not been analyzed systematically here data from a village survey spanning a time period from 1992 to 2012 are used to evaluate effects on rural economic development panel regression models with village fixed effects show that contracts have significantly contributed to wealth accumulation contracts signed before 1999 were more beneficial than contracts signed afterward which is due to more public sector support and infrastructure investments during the earlier period contracts have contributed to decreasing inter village inequality not only because poorer villages were more likely to adopt a contract but also because they benefited more from contract adoption than richer ones the results suggest that well designed contracts can be important for smallholder farmers to benefit from the oil palm boom the village level approach has clear advantages to evaluate direct and indirect economic effects but it also has drawbacks in terms of analyzing environmental effects and issues of intra village inequality more research with various approaches is needed to better understand the multifaceted implications of oil palm contracts for sustainable rural development

day of the week and intraday effects in stock returns abstract this study examines day of the week effects using hourly values of the dow jones industrial average we find that over the 1963 1983 period the weekend effect has sifted from characterizing active trading on monday to characterizing the non trading weekend over the early part of our sample period negative returns characterize each hour of trading on monday while the return from friday close to monday open is positive in the most recent subperiod monday average hourly returns after noon are all positive and the weekend effect is due to negative average returns from friday close to monday open

covered interest arbitrage profits the role of liquidity and credit risk we study the profitability of covered interest parity cip arbitrage violations and their relationship with market liquidity and credit risk using a novel and unique dataset of tick by tick firm quotes for all financial instruments involved in the arbitrage strategy the empirical analysis shows that positive cip arbitrage deviations include a compensation for liquidity and credit risk once these risk premia are taken into account small arbitrage profits only accrue to traders who are able to negotiate low trading costs the results are robust to stale pricing and the nonsynchronous trading occurring in the markets involved in the arbitrage strategy

good day sunshine stock returns and the weather psychological evidence and casual intuition predict that sunny weather is associated with upbeat mood this paper examines the relationship between morning sunshine in the city of a country s leading stock exchange and daily market index returns across 26 countries from 1982 to 1997 sunshine is strongly significantly correlated with stock returns after controlling for sunshine rain and snow are unrelated to returns substantial use of weather based strategies was optimal for a trader with very low transactions costs however because these strategies involve frequent trades fairly modest costs eliminate the gains these findings are difficult to reconcile with fully rational price setting

limit orders depth and volatility evidence from the stock exchange of hong kong we investigate the role of limit orders in the liquidity provision in a pure orderdriven market results show that market depth rises subsequent to an increase in transitory volatility and transitory volatility declines subsequent to an increase in market depth we also examine how transitory volatility affects the mix between limit orders and market orders when transitory volatility arises from the ask bid side investors will submit more limit sell buy orders than market sell buy orders this result is consistent with the existence of limit order traders who enter the market and place orders when liquidity is needed

contract farming smallholders and rural development in latin america the organization of agroprocessing firms and the scale of outgrower production abstract this paper demonstrates how contract farming functions as an economic institution and explores the causes of the observed variation in the scale of outgrower production in latin america we outline how market imperfections and transaction costs influence the decision of agroprocessing firms to contract out vertically integrate or use spot markets to obtain raw product the paper demonstrates how market conditions are likely to be associated with particular outgrower characteristics under contract farming an analysis of the mexican frozen vegetable industry illustrates determinants of successful and unsuccessful small scale contracting and suggests alternative policies to promote contract farming with smallholders

stock market structure and volatility the procedure for opening stocks on the nyse appears to affect price volatility an analytical framework for assessing the magnitude of the structurally induced volatility is presented the ratio of variance of open to open returns to closeto close returns is shown to be consistently greater than one for nyse common stocks during the period 1982 through 1986 tbe greater volatility at the open is not attributable to the way in which public information is released since both the opento open return and the close to close return span the same period of time instead the greater volatility appears to be attributable to private information revealed in trading and to temporaryprice deviations induced by specialist and other traders the implied cost of immediacy at the open is significantly higher than at the close other empirical evidence in this article documents the volume of trading at the open the time delays between the exchange opening and the first transaction in a stock the difference in daytime volatility versus overnight volatility and the extent to which volatility is related to trading volume

vulnerability to multi dimensional poverty an empirical comparison of alternative measurement approaches this paper investigates whether different measures of ex post poverty and ex ante vulnerability to poverty provide consistent estimates of poverty and vulnerability to poverty across households mo

is it the weather we show that results in the recent strand of the literature which tries to explain stock returns by weather induced mood shifts of investors might be data driven inference more specifically we consider two recent studies kamstra mark j kramer lisa a levi maurice d 2003a winter blues a sad stock market cycle american economic review 93 1 324 343 cao melanie wei jason 2005 stock market returns a note on temperature anomaly journal of banking and finance 29 6 1559 1573 that claim that a seasonal anomaly in stock returns is caused by mood changes of investors due to lack of daylight and temperature variations respectively while we confirm earlier results in the literature that there is indeed a strong seasonal effect in stock returns in many countries stock market returns tend to be significantly lower during summer and fall months than during winter and spring months as documented by bouman and jacobsen bouman sven jacobsen ben 2002 the halloween indicator sell in may and go away another puzzle american economic review 92 5 1618 1635 there is little evidence in favor of a sad or temperature explanation in fact we find that a simple winter summer dummy best describes this seasonality our results suggest that without any further evidence the correlation between weather related variables and stock returns might be spurious and the conclusion that weather affects stock returns through mood changes of investors is premature

experimental estimates of education production functions this paper analyzes data on 11 600 students and their teachers who were randomly assigned to different size classes from kindergarten through third grade statistical methods are used to adjust for nonrandom attrition and transitions between classes the main conclusions are 1 on average performance on standardized tests increases by four percentile points the first year students attend small classes 2 the test score advantage of students in small classes expands by about one percentile point per year in subsequent years 3 teacher aides and measured teacher characteristics have little effect 4 class size has a larger effect for minority students and those on free lunch 5 hawthorne effects were unlikely

an investigation of transactions data for nyse stocks using transactions data the behavior of returns and characteristics of trades at the micro level is examined a minute by minute market return series is formed and tested for normality and autocorrelation evidence of differences in return distributions is found among overnight trades trades during the first 30 minutes following the market opening trades at the close and trades during the remainder of the day the latter distribution is found to be normal unusually high returns and standard deviations of returns are found at the beginning and the end of the trading day when the beginningand end of the day effects are omitted autocorrelation in the market return series is reduced substantially a number of patterns in trading are reported this paper empirically investigates the nature of the return generating process and the characteristics of trade size price changes trading frequency and trading interval at the level of individual trades for a large sample of nyse stocks previous studies of market indices have used daily weekly or monthly

losing sleep at the market the daylight saving anomaly reply motivated by the recent flurry of activity in sleep research this paper explores the connection between sleep disruptions following spring and fall clock shifts associated with daylight savings time and equity returns it is shown that the weekend effect in the form of the lower than expected friday to monday returns is particularly pronounced for the two weekends involving daylight savings clock changes this abstract was borrowed from another version of this item

do weather induced moods affect the processing of earnings news we investigate whether unpleasant environmental conditions affect stock market participants responses to information events we draw from psychology research to develop a new prediction that weather induced negative moods reduce market participants activity levels exploiting geographic variation in equity analysts locations we find compelling evidence that analysts experiencing unpleasant weather are slower or less likely to respond to an earnings announcement relative to analysts responding to the same announcement but experiencing pleasant weather price association tests find evidence consistent with reduced activity due to weather induced moods delaying equilibrium price adjustments following earnings announcements we also use our analyst based research design to re examine an existing prediction that unpleasant weather induces investor pessimism and find evidence of both analyst pessimism and reduced activity in the presence of unpleasant weather together our study provides new evidence that both extends and reaffirms findings of a relation between unpleasant weather and market activities and contributes to the broader psychology and economics literature on the impact of weather induced mood on labor productivity this article is protected by copyright all rights reserved

poverty risk aversion and path dependence in low income countries experimental evidence from ethiopia in most low income countries rural households depend on mixed rain fed agriculture livestock production which is very risky due to numerous market failures there are few ways to shift risks to third parties the literature has focused on what determines the responses of households in such environments of special concern are path dependencies in which households experiencing failure are prone to further failure and potential poverty traps this paper estimates levels and determinants of risk aversion in the highlands of ethiopia we find high risk aversion and evidence that constraints have important impacts on risk averting behavior with perhaps significant implications for long term poverty the results also suggest the possibility of path dependence and offer insights into links between risk aversion and poverty traps copyright 2009 oxford university press

school inputs and educational outcomes in south africa we examine the relationship between educational inputs primarily pupilteacher ratios and school outcomes in south africa immediately before the end of apartheid government black households were severely limited in their residential choice under apartheid and attended schools for which funding decisions were made centrally by white controlled entities over which they had no control the allocations resulted in marked disparities in average class sizes controlling for household background variables we find strong and significant effects of pupilteacher ratios on enrollment on educational achievement and on test scores for numeracy

winter blues a sad stock market cycle and god said let there be light and there was light and god saw that the light was good genesis 1 3 depression has been linked with seasonal affective disorder sad a condition that affects many people during the seasons of relatively fewer hours of daylight experimental research in psychology has documented a clear link between depression and lowered risktaking behavior in a wide range of settings including those of a financial nature through the links between sad and depression and between depression and risk aversion seasonal variation in length of day can translate into seasonal variation in equity returns based on supportive evidence from psychology which suggests sad is linked closely with hours of daylight we consider stock market index data from countries at various latitudes and on both sides of the equator we model differences in the seasonal variation of daylight across coun

one way arbitrage foreign exchange and securities markets a note theorem in the case of traders with exogenous needs to acquire foreign currency recently deardorff 3 coitned the phrase one way arbitrage to describe the behavior of those traders and showed that it probably precludes round trip covered interest arbitrage from breaking even deardorff s analysis focuses on the conditions under which in the presence of transaction costs there would be both spot and forward transactions on the foreign exchange markets at equilibrium in this paper we extend the analysis to derive the conditions under which transactions would exist in both the home and foreign securities markets and we generalize the results to the case of transactions in all markets

the slicing approach to valuing tax shields abstract the literature develops the theoretical rationale for the value of tax shields vts on the following misguided basis it uses required rate of return on assets or wacc as the discount rate for capitalization it uses expected rate of return on assets roa or roi as a proxy for wacc and it is not aware of 1 the influence of the difference between expected rate of return on equity and required rate of return on equity rroe on vts 2 the fact that rroe is equity normal profit which is not measurable 3 the economic content of the weight attached to the vts capacity and 4 the co definition of tax shield and leverage return this paper takes tax shields and leverage return as a system and provides a knife interest rate roi cost price to slice the vts capacity into earned vts and unearned vts earned vts is vts unearned vts is the value of leverage return because leverage return is tax payable

the pricing of temperature futures at the chicago mercantile exchange abstract this paper analyzes observed prices of us temperature futures at the chicago mercantile exchange cme results show that an index modeling approach without detrending captures the prices exceptionally well moreover weather forecasts significantly influence prices up to 11 days ahead it is shown that valuations of temperature futures relying on a model without detrending yield biased valuations by overpricing winter contracts and underpricing summer contracts several trading strategies are devised to exploit the mispricing observed at the cme and to demonstrate that speculating on temperature futures can not only generate high overall returns but also perform well on a risk adjusted basis

the dependence between hourly prices and trading volume this study provides evidence on joint characteristics of hourly common stock trading vol ume and returns on the new york stock exchange average volume traded shows signifi cant differences across trading hours of the day and across days of the week average returns differ across hours ofthe day and to some extent across days ofthe week there is a strong contemporaneous relation between trading volume and returns and also a rela tion between trading volume and returns lagged up to four hours furthermore the trading volume returns relation is steeper for positive returns than for nonpositive returns

decentralized targeting of an antipoverty program abstract developing country governments often delegate authority over the targeting of antipoverty programs to community organizations while retaining control over how much goes to each community we offer a theoretical characterization of the information structure in such programs and the interconnected behavior of the various players our model motivates an econometric specification for explaining distributional outcomes results for bangladesh s food for education ffe program indicate that within village targeting improved with program size lower land inequality less remoteness fewer shocks and less private redistribution there is no sign that the center took account of village attributes conducive to reaching the poor

the allocation and impact of social funds between 1992 and 1998 the peruvian social fund foncodes spent about us 570 million funding microprojects throughout the country many of these projects involved constructing and renovating school

when and how us dollar shortages evolved into the full crisis evidence from the cross currency swap market abstract this paper investigates when and how the us dollar shortages evolved into the full crisis in the cross currency swap market between major european currencies and the us dollar during the turmoil of 2007 2009 using the dynamic factor model with regime switching coefficients of each swap price with respect to the latent common factor the 1 year market entered the high crisis regime soon after the onset of the subprime problem in august 2007 the 10 year market entered that regime following the collapse of bear sterns in mid march 2008 financial credit spreads have significant predictive power for switches between high and low regimes

is it the weather comment this comment discusses some errors in a recent paper by jacobsen and marquering jacobsen b marquering w 2008 is it the weather journal of banking and finance 32 4 526 540 in which the authors challenge our previous finding that stock market returns exhibit seasonal patterns consistent with the influence of seasonal affective disorder on investor risk aversion we find that we cannot replicate the authors findings even after corresponding with them furthermore we document several problems with their methodology including misspecification of their economic model misspecification of their econometric model and use of inappropriate data while we agree that seasonal affective disorder is not an explanation for all variation in equity markets we do maintain that careful analysis leads to economically and statistically significant evidence of the effect we originally documented

deviations from purchasing power parity under different exchange rate regimes do they revert and if so how abstract we propose an empirical model for deviations from long run purchasing power parity ppp that simultaneously accounts for three key features i adjustment toward ppp may occur via nominal exchange rates and relative prices at different speeds ii different exchange rate regimes may generate regime shifts in the structural dynamics of ppp deviations iii nonlinear reversion toward ppp in response to shocks this empirical framework encompasses and synthesizes much previous empirical research using over a century of data for the g5 countries we provide evidence that long run ppp holds the relative importance of nominal exchange rates and prices in restoring ppp varies over time and across different exchange rate regimes and reversion to ppp occurs nonlinearly at a speed that is fairly consistent with the nominal rigidities suggested by conventional open economy models

flexible inflation targeting and financial stability is it enough to stabilize inflation and output abstract we investigate empirically whether a central bank can promote financial stability by stabilizing inflation and output and whether additional stabilization of asset prices and credit growth would enhance financial stability in particular we employ an econometric model of the norwegian economy to investigate the performance of simple interest rate rules that allow a response to asset prices and credit growth in addition to inflation and output we find that output stabilization tends to improve financial stability additional stabilization of house prices equity prices and or credit growth enhances stability in both inflation and output but has mixed effects on financial stability in general financial stability as measured by e g asset price volatility improves while financial stability measured by indicators that depend directly on interest rates deteriorates mainly because of higher interest rate volatility owing to a more active monetary policy

does the law of one price hold in international financial markets evidence from tick data abstract this paper investigates the validity of the law of one price lop in international financial markets by examining the frequency size and duration of inter market price differentials for borrowing and lending services one way arbitrage using a unique data set for three major capital and foreign exchange markets that covers a period of more than seven months at tick frequency we find that the lop holds on average but numerous economically significant violations of the lop arise the duration of these violations is high enough to make it worthwhile searching for one way arbitrage opportunities in order to minimize borrowing costs and or maximize earnings on given funds we also document that such opportunities decline with the pace of the market and increase with market volatility

the social performance and distributional consequences of contract farming an equilibrium analysis of the arachide de bouche program in senegal abstract this paper is an empirical analysis of the impact of a contract farming program in senegal we examine the access of poorer community members to contracts and the effect of the program on the income of participants the program performs very well on both counts participants and nonparticipants are indistinguishable by wealth measures and farmers increase their income substantially by participating in the program we attribute the former to the program s mobilization of local information through its use of village intermediaries permitting the substitution of social collateral for physical collateral and making the program more accessible to the poor

sentiment and stock returns the sad anomaly revisited notice this is the author s version of a work that was accepted for publication in journal of banking finance changes resulting from the publishing process such as peer review editing corrections structural formatting and other quality control mechanisms may not be reflected in this document changes may have been made to this work since it was submitted for publication a definitive version was subsequently published in journal of banking finance vol 34 issue 6 june 2010 doi 10 1016 j jbankfin 2009 11 027

smoothing consumption by smoothing income hours of work responses to idiosyncratic agricultural shocks in rural india while research has demonstrated that farm households in developing economies are able to protect consumption from idiosyncratic crop shocks little evidence shows how this is achieved this paper examines the extent to which labor markets allow households to shift labor from farm to off farm employment and the extent to which such a shift explains the observed lack of correlation between consumption and idiosyncratic crop shocks the empirical analysis uses a novel measure of the idiosyncratic crop income shock which utilizes information on start of season cropping choices to more accurately estimate household expectations of weather

order imbalance liquidity and market returns traditionally volume has provided the link between trading activity and returns we focus on a hitherto unexplored but intuitive measure of trading activity the aggregate daily order imbalance on the new york stock exchange signed order imbalances increase decrease following market declines rises which reveals that investors are contrarians on aggregate order imbalances in either direction either excess buy or sell orders reduce liquidity market wide returns are strongly affected by contemporaneous and lagged order imbalances market wide returns reverse themselves after high negative imbalance large negative return days the magnitude of this reversal is partially predictable from the level of the imbalance and return even after controlling for aggregate market volume and liquidity market returns are affected by order imbalance

divergence of sentiment and stock market trading this paper introduces the concept of divergence of sentiment to the behavioral finance literature we measure the distance between people with positive and negative sentiment on a daily basis for 20 countries by using data from status updates on facebook the prediction is that a higher divergence of sentiment leads to more diverging views on prospects and risks and thus to more diverging views on the value of a stock in line with this prediction divergence of sentiment is positively related to trading volume we further predict and find a positive relation between divergence of sentiment and stock price volatility the observed relations are stronger when individual investors are more likely to trade we compare the effect of our country specific measures to a global measure of divergence of sentiment we find that the separate effects of country specific and global divergence measures depend on a country s level of market integration

smallholder participation in contract farming comparative evidence from five countries summary supermarkets specialized wholesalers processors and agro exporters are transforming the marketing channels into which smallholder farmers sell produce in low income economies we develop a conceptual framework with which to study contracting between smallholders and a commodity processing firm we then synthesize results from empirical studies of contract farming arrangements in five countries ghana india madagascar mozambique and nicaragua the resulting meta narrative documents patterns of participation the welfare gains associated with participation reasons for nonparticipation the significant extent of contract noncompliance and the considerable dynamism of these value chains as farmers and firms enter and exit frequently

trading activity dealer concentration and foreign exchange market quality abstract we study the relation between foreign exchange market quality and both trading activity and dealer concentration by considering two currency pairs with significant differences along both dimensions the euro us dollar and canadian dollar us dollar a variance ratio test reveals over reaction in currency prices but that this is smallest when trading activity is high and dealer concentration at its peak a garch model shows that over reaction declines as trading activity and dealer concentration increase with the results being stronger for the euro our results confirm that trading activity is an important determinant of market quality but also point to a significant role for dealer concentration

mood fluctuations projection bias and volatility of equity prices this paper focuses on the potential e2ects of small uctuations in investors subjective preferences speci5cally their discount factors and attitudes towards risk on the volatility of equity prices we brie y summarize some of the arguments and evidence regarding the uctuations in subjective preferences our analysis indicates that such uctuations may have signi5cant implications for understanding the volatility of the prices of 5nancial assets we derive a closed form expression for equilibrium equity prices and use this expression to map the uctuations in investors subjective preferences to the uctuations in equity prices our analysis suggests that small uctuations in the discount factor have potentially large e2ects on the latter for example if the standard deviation of the uctuations in the discount factor is of the order of 1 10th of one percent then this by itself can induce a 3 4 standard deviation in the uctuations in equity prices the uctuations in the attitude towards risk have a smaller but nevertheless non negligible e2ect we present the intuition underlying our conclusions c 2002 published by elsevier science b v

schooling and labor market consequences of school construction in indonesia evidence from an unusual policy experiment between 1973 and 1978 the indonesian government engaged in one of the largest school construction programs on record combining differences across regions in the number of schools constructed with differences across cohorts induced by the timing of the program suggests that each primary school constructed per 1 000 children led to an average increase of 0 12 to 0 19 years of education as well as a 1 5 to 2 7 percent increase in wages this implies estimates of economic returns to education ranging from 6 8 to 10 6 percent

a transaction data study of weekly and intradaily patterns in stock returns abstract weekly and intradaily patterns in common stock prices are examined using transaction data for large firms negative monday close to close returns accrue between the friday close and the monday open for smaller firms they accrue primarily during the monday trading day for all firms significant weekday differences in intraday returns accrue during the first 45 minutes after the market opens on monday mornings prices drop while on the other weekday mornings they rise otherwise the pattern of intraday returns is similar on all weekdays most notable is an increase in prices on the last trade of the day

contract farming and vulnerability to poverty among oil palm smallholders in indonesia abstractthis article addresses smallholder oil palm farming in indonesia and the risk of falling into poverty by comparing contract and non contract smallholders we use an asset based approach to define vulnerability and apply propensity score matching analysis to assess the impact of contract farming data were collected from a cross sectional survey conducted in 2010 of 245 oil palm smallholder households 126 of which were contract smallholders the study finds that approximately 40 per cent of oil palm smallholders can be classified as stochastic transient poor we also show that while contract participation reduces the negative impact of oil palm price shocks this is not the case for production shocks the study concludes that despite positive income effects contract smallholders also remain vulnerable to poverty

volume volatility and the dispersion of beliefs i examine a two period noisy rational expectations model of a futures market and show that the dispersion of expectations about a weighted average of future prices measures both the additional volatility and the additional expected volume of trade associated with noisy information the role played by dispersion helps clarify several stylized facts concerning volume and price behavior specifically dispersion can be a factor contributing to the positive correlation between volume and absolute price changes and the positive correlation between consecutive absolute price changes article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

losing sleep at the market comment in a recent provocative paper in this journal mark j kamstra et al 2000 test and reject the hypothesis that the mean weekend return following changes in daylight saving time equals the mean weekend return throughout the rest of the year the authors report that the average friday to monday return on daylight saving weekends is 200 500 percent larger than the average negative return for the other weekends of the year the nding appears to hold not only in the united states and canada where daylightsaving date patterns are similar but also in the united kingdom whose patterns ostensibly differ from those in north america the results also appear robust to alternative statistical methods based on time varying conditional heteroscedasticity and or bootstrapping this paper provides further robustness tests of the results reported by kamstra et al i show that the difference between mean weekend returns for daylight saving and non daylightsaving weekends is signi cant only for fall changes in daylight saving time and that the fall difference is driven by two outliers associated with international stock market crises two separate adjustments for the heteroscedasticity these outliers induce cause the signi cance of the fall difference to vanish the total sample spring plus fall difference remains marginally signi cant for some indexes after heteroscedasticity adjustments with classical xed level hypothesis tests however bayesian sample size adjustments produce posterior odds ratios that consistently favor the null hypothesis of no daylight saving anomaly over the alternative that the anomaly exists i also fail to reject the hypothesis that daylight saving and nondaylight saving weekend returns have equal distributions for these reasons i question the robustness of the ndings reported by kamstra et al 2000 section i presents more details of my tests and section ii summarizes my ndings and discusses their interpretation

covered interest parity a high frequency high quality data study profitable deviations from covered interest parity cip represent riskless arbitrage opportunities and so indicate market ineffic iency previous empirical work on cip uses noncontemporaneously sampl ed data and reports mixed results this paper uses high frequency te n minute high quality data gathered personally by the author in th e london foreign exchange market to test the cip condition the resu lts overwhelmingly support the market efficiency hypothesis copyright 1987 by the review of economic studies limited

price reversals bid ask spreads and market efficiency we examine the behavior of common stock prices after a large change in price occurs during a single trading day and find evidence that the stock market appears to have overreacted especially in the case of price declines however the magnitude of the overreaction is small compared to the bid ask spreads observed for the individual stocks in the sample we interpret this finding as being consistent with a market that is efficient after transactions costs are considered