seasonal poverty in madagascar magnitude and solutions abstract seasonal reductions in food consumption pull about one million malagasy below the poverty line during the lean season there they join the nine million more who remain chronically undernourished throughout the year because the seasonality of food shortages coincides with the increased prevalence of diarrhea and other diseases during the rainy season the resulting lean season exacts a heavy toll in the form of increased rates of malnutrition and child mortality combining the results of recent field studies with a seasonal multi market model this paper measures the probable impacts of three common interventions aimed at combatting seasonal food insecurity we find the most promising interventions to be those that increase agricultural productivity of the secondary food crops such as cassava other roots and tubers and maize

interbank market liquidity and central bank intervention we develop a simple model of the interbank market where banks trade a long term safe asset when there is a lack of opportunities for banks to hedge idiosyncratic and aggregate liquidity shocks the interbank market is characterized by excessive price volatility in such a situation a central bank can implement the constrained efficient allocation by using open market operations to fix the short term interest rate it can be constrained efficient for banks to hoard liquidity and stop trading with each other if there is sufficient uncertainty about aggregate liquidity demand compared to idiosyncratic liquidity demand

sulfur dioxide control by electric utilities what are the gains from trade title iv of the 1990 clean air act amendments caaa established a market for transferable sulfur dioxide so2 emission allowances among electric utilities this market offers firms facing high marginal abatement costs the opportunity to purchase the right to emit so2 from firms with lower costs and this is expected to yield cost savings compared to a command and control approach to environmental regulation this paper uses econometrically estimated marginal abatement cost functions for power plants affected by title iv of the caaa to evaluate the performance of the so2 allowance market specifically we investigate whether the much heralded fall in the cost of abating so2 compared to original estimates can be attributed to allowance trading we demonstrate that for plants that use low sulfur coal to reduce so2 emissions technical change and the fall in prices of low sulfur coal have lowered marginal abatement cost curves by over 50 percent since 1985 the flexibility to take advantage of these chan

distressed debt restructuring in the presence of credit default swaps the availability of credit insurance via credit default swaps has been closely associated with the emergence of empty creditors we empirically investigate this issue by looking at the debt restructurings distressed exchanges and bankruptcy filings of rated nonfinancial u s companies over the period january 2007 june 2011 using different proxies for the existence of insured creditors we do not find evidence that the access to credit insurance favors bankruptcy over a debt workout however we document higher recovery prices following a distressed exchange in firms where empty creditors are more likely to emerge

credit default swaps has the gfc influenced perceptions of their utility for banks credit default swaps cdss are considered as one of the most versatile financial innovations of the 21st century since its inception the credit derivatives market has grown to a peak of 64 trillion in 2008 in terms of gross notional values cont 2010 however after the onset of the gfc this market has decreased to a large extent while there is evidence that promotes the risk reduction properties of cdss there is a growing body of research post gfc that identifies destabilising effects of these instruments in this paper i review the relevant scholarly literature and provide evidence of how the views on cdss have changed post gfc due a deeper investigation of issues such as systemic risk regulatory arbitrage information asymmetry and risk taking among others in the banking industry this paper provides a survey of the literature of views for and against the use of cdss during pre and post gfc periods and finally concludes that in comparison to the pre gfc period post gfc there is a significant increase in the literature that highlights the detrimental nature of cdss

option listing and stock returns abstract this article examines the effect of option introductions on the underlying stocks in addition to the price increase and volatility decrease that take place when new options are listed we obtain and explain the following new empirical results i an increase in the value of the market around the listing dates of new options ii an increase in the value of an industry index which excludes the optioned stocks iii the dissipation of the price and volatility effects in recent periods and iv the existence of an announcement effect in one subperiod of our sample and its dissipation in recent periods

the effect of derivative assets on information acquisition and price behavior in a rational expectations equilibrium this article shows that introducing derivative assets increases incentives to collect information about asset payoffs the increase in information collection makes the price of the underlying asset more informative and causes the expected price to increase extending the model to a dynamic setting with multiple risky assets we find the introducing derivative assets for one asset increases the expected prices of positively correlated assets and reduces price reaction to future earnings announcements these findings are consistent with the bulk of the empirical evidence on the relationship between the introduction of derivative assets and the behavior of asset prices article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

a note on the impact of options on stock return volatility abstract this paper measures the impact of option introductions on the return variance of underlying stocks past research generally finds a significant reduction in stock return variance following the listing of options through 1986 using a more extensive sample i compare changes in the return variance of optioned stocks to changes in the return variance of a control group since the average change in the control group is statistically indistinguishable from the average change in the optioned stocks i conclude that option introductions do not significantly affect stock return variance

sustaining growth in agriculture a quantitative review of agricultural research investments abstract growth in agriculture depends on many things but one of the most important is investment in agricultural research decision making in the agricultural research policy area can only be aided by access to better information this article overviews a recent endeavor to move policy dialogue beyond merely qualitative impressions towards a process that is underpinned with new and cogent data the data used have been assembled at isnar in a manner designed to make comparisons both over time and between countries more valid than has been the case in the past the comparisons thus possible reveal considerable diversity both between countries and between broad regional aggregations also illuminated here are issues related to the commodity orientation capital and labor intensity and size and scope of particular national programs

from cash in the market pricing to financial fragility we review some recent research that explores the relationship between asset price volatility and financial fragility when markets and contracts are incomplete jel e5 g2

on the stock control performance of intermittent demand estimators the purpose of this paper is to assess the empirical stock control performance of intermittent demand estimation procedures the forecasting methods considered are the simple moving average single exponential smoothing croston s method and a new method recently developed by the authors of this paper we first discuss the nature of the empirical demand data set 3000 stock keeping units and we specify the stock control model to be used for experimentation purposes performance measures are then selected to report customer service level and stock volume differences the out of sample empirical comparison results demonstrate the superior stock control performance of the new intermittent demand forecasting method and enable insights to be gained into the empirical utility of the other estimators

contagion and risk sharing on the inter bank market abstract increasing inter bank lending has an ambiguous impact on financial stability using a computational model with endogenous bank behavior and interest rates we identify the conditions under which inter bank lending promotes stability through risk sharing or provides a channel through which failures may spread in response to large economy wide shocks more inter bank lending relationships worsen systemic events for smaller shocks the opposite effect is observed as such no inter bank market structure maximizes stability under all conditions in contrast deposit insurance costs are always reduced under greater numbers of inter bank lending relationships a range of regulations are considered to increase system stability

on the contagion effect in the us banking sector by using the spatial econometrics methodology this paper investigates the contagion of the risk taking by banks in the us banking sector during 2001 to 2012 in addition the contagion signals up to the subprime crisis in 2008 are analyzed and different channels of contagion are studied in order to identify fragile groups of banks our analysis reveals that there is no significant contagion transmitted to the whole banking system however we observe that the bank contagion is significantly spread locally and for the group of banks that share similar characteristics related to size and bank regulations

how do market prices and cheap talk affect coordination in many scenarios such as banking and liquidity crises inefficiencies often arise because investors face uncertainties about economic fundamentals and the strategies of other investors how information affects fundamental uncertainty is well studied but how information affects strategic uncertainty is underexplored this paper examines how two communication mechanisms market and cheap talk affect investment decisions and efficiency in an experimental investment game with both fundamental and strategic uncertainty i find that the market does not improve coordination because the expectation that coordination failures will occur is self fulfilling while cheap talk improves coordination because the signals of willingness to invest alleviate strategic uncertainty

credit derivatives in banking useful tools for managing risk abstract we model the effects on banks of the introduction of a market for credit derivatives in particular credit default swaps a bank can use such swaps to temporarily transfer credit risks of their loans to others reducing the likelihood that defaulting loans trigger the bank s financial distress because credit derivatives are more flexible at transferring risks than are other more established tools such as loan sales without recourse these instruments make it easier for banks to circumvent the lemons problem caused by banks superior information about the credit quality of their loans however we find that the introduction of a credit derivatives market is not necessarily desirable because it can cause other markets for loan risk sharing to break down

credit default swaps and ceo compensation a long term perspective in this paper we examine whether the onset of credit default swaps cdss affects a firm s executive compensation the availability of cdss allows lenders to transfer credit risk but not control

has the cds market lowered the cost of corporate debt abstract many have claimed that credit default swaps cdss have lowered the cost of debt financing to firms by creating new hedging opportunities and information for investors this paper evaluates the impact that the onset of cds trading has on the spreads that underlying firms pay to raise funding in the corporate bond and syndicated loan markets employing a range of methodologies we fail to find evidence that the onset of cds trading lowers the cost of debt financing for the average borrower further we uncover economically significant adverse effects on risky and informationally opaque firms

securitization and bank performance theory suggests that securitization provides financial institutions with an opportunity to lower the cost of funding improve credit risk management and increase profitability in practice however it might lead to adverse consequences through a number of indirect channels therefore the net impact of securitization on bank performance is ambiguous this study aims to evaluate whether banks improve their performance through the use of the securitization market by applying a propensity score matching approach in other words we build a counterfactual group of banks to assess what would have happened to the securitizing banks had they not securitized using us commercial banking data from 2001 to 2008 we first test these hypotheses using univariate analysis and find that securitizing banks are on average more profitable institutions with higher credit risk exposure and higher cost of funding however the propensity score matching analysis does not provide evidence of significant causal effects of securitization on the performance of banks therefore securitization does not seem to outperform alternative funding risk management and profitability improvement techniques used by banks that have ex ante similar characteristics to those securitizing our evidence raises important questions about the motives for banks increasing securitization activities and consequent implications for the banking system

information reliability and a theory of financial intermediation this paper is an analysis of when it will be beneficial for agents engaged in the production of information to form coalitions the model is cast in a financial market framework thus leading to an identification of conditions sufficient for the existence of financial intermediaries intermediation is shown to improve welfare if informational asymmetries are present and the information generated to rectify these asymmetries is potentially unreliable the usual appeal to transactions costs to explain intermediation is not needed

synthetic or real the equilibrium effects of credit default swaps on bond markets we provide a model of nonredundant credit default swaps cdss building on the observation that cdss have lower trading costs than bonds cds introduction involves a trade off it crowds out existing demand for the bond but improves the bond allocation by allowing long term investors to become levered basis traders and absorb more of the bond supply we characterize conditions under which cds introduction raises bond prices the model predicts a negative cds bond basis as well as turnover and price impact patterns that are consistent with empirical evidence we also show that a ban on naked cdss can raise borrowing costs

endogenous trading volume and momentum in stock return volatility this article examines the ability of volume data to shed light on the source of persistence in stock return volatility a mixture model in which a latent common factor restricts the joint density of volume and returns is used to relax the assumption of exogenous volume used in previous studies we use a point in time signal extraction procedure to identify this latent process and a calibrated simulation to conduct analysis of the viability of the model to explain important properties of the data using daily returns and volume on individual stocks our procedure cannot accommodate serial dependence in squared returns

a model of a systemic bank run abstract this paper provides a model of the view that the 2008 financial crisis is reminiscent of a bank run focussing on six stylized key features in particular core financial institutions have invested their funds in asset backed securities rather than committed to long term projects in distress these can potentially be sold to a large pool of outside investors at steep discounts i consider two different motives for outside investors and their interaction with banks trading asset backed securities uncertainty aversion versus adverse selection i shall argue that the version with uncertainty averse investors is more consistent with the stylized facts than the adverse selection perspective in the former the crisis deepens the larger the market share of distressed core banks while a run becomes less likely instead as a result in the adverse selection version therefore the outright purchase of troubled assets by the government at prices above current market prices may both alleviate the financial crises as well as provide tax payers with returns above those for safe securities

the price effect of option introduction this paper examines the price effect of option introduction from 1974 to 1980 the introduction of individual options causes a permanent price increase in the underlying security beginning approximately three days before introduction the price effect appears to be associated with introduction and not announcement throughout the sample period excess returns volatility declines with option introduction systematic risk is unchanged there is a positive relation between the price increase and a measure of activity in the options market copyright 1989 by american finance association

risk and hedging do credit derivatives increase bank risk abstract the objective of this paper is to investigate whether financial innovation of credit derivatives makes banks more exposed to credit risk although credit derivatives are important for hedging and securitizing credit risk and thereby likely to enhance the sharing of such risk some commentators have raised concerns that they may destabilize the banking sector this paper investigates this issue in a simple model driven by costs of financial distress the analysis identifies two effects of credit derivatives innovation they enhance risk sharing as suggested by the hedging argument but they also make further acquisition of risk more attractive the latter effect if dominant can therefore destabilize the banking sector the critical factor is perhaps surprisingly the competitive nature of the existing underlying credit markets as these markets become more elastic the threat of destabilization increases the paper discusses issues related to bank regulation within the context of the model

are incentive contracts rigged by powerful ceos we argue that some powerful ceos induce boards to shift the weight on performance measures toward the better performing measures thereby rigging incentive pay a simple model formalizes this intuition and gives an explicit structural form on the rigged incentive portion of ceo wage function using u s data we find support for the model s predictions rigging accounts for at least 10 of the compensation to performance sensitivity and it increases with ceo human capital and firm volatility moreover a firm with rigged incentive pay that is one standard deviation above the mean faces a subsequent decrease of 4 8 in firm value and 7 5 in operating return on assets

underinvestment in a profitable technology the case of seasonal migration in bangladesh hunger during pre harvest lean seasons is widespread in the agrarian areas of asia and sub saharan africa we randomly assign an 8 50 incentive to households in rural bangladesh to temporarily out migrate during the lean season the incentive induces 22 of households to send a seasonal migrant their consumption at the origin increases significantly and treated households are 8 10 percentage points more likely to re migrate 1 and 3 years after the incentive is removed these facts can be explained qualitatively by a model in which migration is risky mitigating risk requires individual specific learning and some migrants are sufficiently close to subsistence that failed migration is very costly we document evidence consistent with this model using heterogeneity analysis and additional experimental variation but calibrations with forward looking households that can save up to migrate suggest that it is difficult for the model to quantitatively match the data we conclude with extensions to the model that could provide a better quantitative accounting of the behavior

forecasting and stock control a study in a wholesaling context wholesalers add value to the products they deal with by essentially bringing them closer to the end consumers in that respect the effective control of stock levels becomes an important measure of operational performance especially in the context of achieving high customer service levels in this paper we address issues pertinent to forecasting and inventory management in a wholesaling environment and discuss the recommendations proposed in such a context in a case study organization our findings demonstrate the considerable scope that exists for improving current practices and offers insights into possible managerial issues

banks and loan sales marketing nonmarketable assets theories of financial intermediation predict that bank loans should not be marketable because of moral hazard problems banks will not conduct credit risk analysis or monitor borrowers if they are not at risk for failing to perform these services throughout most of history bank loans have not in fact been marketable yet by the end of the 1980 s the amount of commercial and industrial loan sales outstanding had grown to over 250 billion from trivial amounts at the beginning of the decade to explain the opening of this loan sales market we present a model of incentive compatible loan sales that allows for implicit contractual features between loan sellers and loan buyers we then test for the presence of these features using a sample of over 800 recent loan sales

optimal financial crises empirical evidence suggests that banking panics are related to the business cycle and are not simply the result of sunspots panics occur when depositors perceive that the returns on bank assets are going to be unusually low we develop a simple model of this in this setting bank runs can be first best efficient they allow efficient risk sharing between early and late withdrawing depositors and they allow banks to hold efficient portfolios however if costly runs or markets for risky assets are introduced central bank intervention of the right kind can lead to a pareto improvement in welfare from the earliest times banks have been plagued by the problem of bank runs in which many or all of the bank s depositors attempt to withdraw their funds simultaneously because banks issue liquid liabilities in the form of deposit contracts but invest in illiquid assets in the form of loans they are vulnerable to runs that can lead to closure and liquidation a financial crisis or banking panic occurs when depositors at many or all of the banks in a region or a country attempt to withdraw their funds simultaneously prior to the twentieth century banking panics occurred frequently in europe and the united states panics were generally regarded as a bad thing and the development of central banks to eliminate panics and ensure financial stability has been an important feature of the history of financial systems it has been a long and involved process the first cerntral bank the bank of sweden was established more than 300 years ago the bank of england played an especially important role in the development of effective stabilization policies in the eighteenth and nineteenth centuries by the end of the nineteenth century banking panics had been eliminated in europe the last true panic in england was the overend gurney company crisis of 1866

welfare effects of financial innovation in incomplete markets economies with several consumption goods abstract we show that in almost every incomplete markets economy with more than one consumption good and with sufficiently many uninsured states of nature at any general equilibrium of this economy it is possible to arbitrarily perturb the equilibrium utilities merely by introducing the appropriate asset making for example all agents worse off this result demonstrates that the examples given by hart on the optimality of equilibrium when the market structure is incomplete j econ theory11 1975 418 443 and others are actually general phenomena and is in sharp contrast to the intuition that innovation since it expands financial opportunities should benefit all agents journal of economic literature classification numbers d52 d60 g10

money financial stability and efficiency most analyses of banking crises assume that banks use real contracts however in practice contracts are nominal and this is what is assumed here we consider a standard banking model with aggregate return risk aggregate liquidity risk and idiosyncratic liquidity shocks we show that with non contingent nominal deposit contracts the first best efficient allocation can be achieved in a decentralized banking system what is required is that the central bank accommodates the demands of the private sector for fiat money variations in the price level allow full sharing of aggregate risks an interbank market allows the sharing of idiosyncratic liquidity risk in contrast idiosyncratic bank specific return risks cannot be shared using monetary policy alone real transfers are needed

earnings announcements stock price adjustment and the existence of option markets this paper employs a new approach to study the effects of option trading on the behavior of underlying stock prices extant research compares distributional properties of the stock price at two points in time divided by an event in the option market that might affect price behavior as an alternative we examine the stock price adjustment to the release of quarterly earnings using samples of firms with and without listed options we find the two samples exhibit different adjustment processes with the nonoption firms requiring substantially more time to adjust since the advent of organized stock option trading the investment community

financial integration and liquidity crises this paper analyzes the effects of financial integration on the stability of the banking system financial integration allows banks in different regions to smooth local liquidity shocks by borrowing and lending on a world interbank market we show under which conditions financial integration induces banks to reduce their liquidity holdings and to shift their portfolios toward more profitable but less liquid investments integration helps reallocate liquidity when different banks are hit by uncorrelated shocks however when a correlated systemic shock hits the total liquid resources in the banking system are lower than in autarky therefore financial integration leads to more stable interbank interest rates in normal times but to larger interest rate spikes in crises these results hold in a setup in which financial integration is welfare improving from an ex ante point of view we also look at the model s implications for financial regulation and show that in a second best world financial integrati

intermittent demand linking forecasting to inventory obsolescence the standard method to forecast intermittent demand is that by croston this method is available in erp type solutions such as sap and specialised forecasting software packages e g forecast pro and often applied in practice it uses exponential smoothing to separately update the estimated demand size and demand interval whenever a positive demand occurs and their ratio provides the forecast of demand per period the croston method has two important disadvantages first and foremost not updating after many periods with zero demand renders the method unsuitable for dealing with obsolescence issues second the method is positively biased and this is true for all points in time i e considering the forecasts made at an arbitrary time period and issue points only i e considering the forecasts following a positive demand occurrence only the second issue has been addressed in the literature by the proposal of an estimator syntetos boylan approximation sba that is approximately unbiased in this paper we propose a new method that overcomes both these shortcomings while not adding complexity different from the croston method the new method is unbiased for all points in time and it updates the demand probability instead of the demand interval doing so in every period the comparative merits of the new estimator are assessed by means of an extensive simulation experiment the results indicate its superior performance and enable insights to be gained into the linkage between demand forecasting and obsolescence

winners and losers from financial derivatives use evidence from community banks this article provides empirical evidence on how profitability of small community banks was affected by derivatives use before and after the 2008 crisis we use an endogenous switching regressions m

loan sales as a response to market based capital constraints models of bank loan sales often appeal to regulatory constraints to motivate this off balance sheet activity here we present a market based model of bank asset sales in which information asymmetries create the incentive for unregulated banks to originate and sell loans to other banks rather than fund them with deposit liabilities banks have a comparative advantage in locating and screening projects within their locality however because of private information banks can fund projects in their portfolio only to the extent that their capital can adequately buffer potential losses on these investments a loan sales market allows a banker having adequate capital to acquire profitable projects originated by a banker whose own capital is insufficient to support the additional risk

forecasting the fragility of the banking and insurance sectors linkages between banks and insurance companies are important when forecasting the fragility of the banking and insurance sectors we propose a novel empirical framework that allows us to estimate unobserved linkages in panel data sets that contain observed regressors we find that taking unobserved common factors into account reduces the root mean square forecasts error of firm specific forecasts by up to 9 of system forecasts by up to 14 and by up to 39 for systemic forecasts of more distressed firms relative to a model based on observed variables only estimates of the factor loadings suggest that the correlation of financial institutions has been relatively stable over the forecast period

financial fragility liquidity and asset prices we define a financial system to be fragile if small shocks have disproportionately large effects in a model of financial intermediation we show that small shocks to the demand for liquidity cause either high asset price volatility or bank defaults or both furthermore as the liquidity shocks become vanishingly small the asset price volatility is bounded away from zero in the limit economy with no shocks there are many equilibria however the only equilibria that are robust to the introduction of small liquidity shocks are those with non trivial sunspot activity

adapting wright s modification of holt s method to forecasting intermittent demand abstract the challenge of accurately forecasting demand for spare parts is due to the intermittent nature of their demand this study compares a recent modification of croston s method and a method based on holt s double exponential smoothing taking the firm s competitive priorities into consideration wright s modification of holt s method is presented as a viable alternative when forecasting demand for spares especially when trend is present results indicate that firms focusing on minimizing inventory levels as a priority should consider forecasting using the modified croston s method if their priority is high customer service then the modified holt s method is superior

stock market quality in the presence of a traded option we use an economic experiment to examine the implications of asymmetric information for linkages between a stock and a traded option we find the presence of the option splits price discovery across markets and changes the process by which conditional expectations are updated the time series properties of the stock price depend directly on the intrinsic value of the option when the intrinsic value of the option is positive informational efficiency is higher in the market for the stock and volatility is lower we provide evidence that the introduction of an option improves market quality in the underlying asset

food marketing liberalization and trader entry evidence from madagascar abstract food marketing liberalization was expected to induce massive trader entry and competitive markets in africa despite evidence of trader entry enterprise expansion remains difficult and many claim market power persists though perhaps in different hands this paper confronts this puzzle of substantial market entry that might not foster competition data from madagascar reveal distinct groups within rural food marketing channels separated by intraindustry mobility barriers that limit entry to a few niches moreover individuals place within the rural marketing network is defined largely by a priori social identity so the experience of food marketing liberalization varies across socially distinct subpopulations

on the bias of intermittent demand estimates forecasting and inventory control for intermittent demand items has been a major problem in the manufacturing and supply environment croston operational research quarterly 23 1972 289 proposed a method according to which intermittent demand estimates can be built from constituent events croston s method has been reported to be a robust method but has shown more modest benefits in forecasting accuracy than expected in this research one of the causes of this unexpected performance has been identified as a first step towards improving croston s method certain limitations are identified in croston s approach and a correction in his derivation of the expected estimate of demand per time period is presented in addition a modification to his method that gives approximately unbiased demand per period estimates is introduced all the conclusions are confirmed by means of an extended simulation experiment where croston s and revised croston s methods are compared the forecasting accuracy comparison corresponds to a situation of an inventory control system employing a re order interval or product group review

credit risk transfer in u s commercial banks what changed during the 2007 2009 crisis abstract following the debate on the role of credit risk transfer crt in exacerbating the 2007 2009 crisis this paper investigates the usage and effects of loan sales securitization and credit derivatives in u s commercial banks over the last decade with special emphasis on the financial crisis we find that in times of severe funding constraints the need to raise financial resources becomes the principal incentive behind crt we document some beneficial effects of crt on the economy since the funds released through crt are subsequently invested by banks to sustain credit supply also in recession however we report higher overall riskiness in banks that engage intensively in loans sales and securitization which translates into higher default rates during the crisis interestingly the benefits and drawbacks of crt are much stronger for loan sales and securitization than for credit derivatives

how do exchanges select stocks for option listing we investigate the factors influencing the selection of stocks for option listing exchanges tend to list options on stocks with high trading volume volatility and market capitalization but the relative effect of these factors has changed over time as markets have evolved we observe a shift from volume toward volatility after the moratorium on new listings ended in 1980 using control sample methodology designed to correct for the endogeneity of option listing we find no evidence that volatility declines with option introduction in contrast to previous studies that do not use control samples beginning with a handful of options listed on the chicago board options exchange cboe in april 1973 the exchange traded option market has since matured into a thriving industry in the united states options trade on five exchanges with contracts on stock indices exchange traded funds currencies interest rates and over 3 000 stocks total equities options volume traded on u s exchanges has risen from 5 7 million contracts in 1974 to over 722 million contracts in 2001 options clearing corporation http www optionsclearing com option markets have also thrived in western europe and other economies with well developed capital markets in this paper we study the listing choices made by option exchanges in the united states in an effort to better understand what determines the success of financial innovation and how derivative markets develop understanding this process has important implications for the continuing development of new securities markets domestically and globally in the new century innovation

the accuracy of a modified croston procedure a modified croston procedure to forecast intermittent demand is reviewed the modified procedure published in this journal in 2004 consists of a new method for estimating the mean demand and a smoothing method for estimating the variance of the forecasted demand rate it is found that the smoothed variance estimate is based on an invalid measure of forecast accuracy moreover it is shown that the method of forecasting mean demand produces biased forecasts the accuracy of this method is assessed using simulated data and the mean square error measure and compared with croston s method and single exponential smoothing it is found that croston s method is generally more accurate than its modification particularly for strongly intermittent series

securitization risk transferring and financial instability the case of spain abstract the 2007 2010 financial crisis has hit a variety of countries asymmetrically the case of spain is particularly illustrative as it exemplifies in a vivid manner most of the core issues largely responsible for the crisis this country experienced a pronounced housing bubble partly funded via spectacular developments in its securitization markets leading to looser credit standards and subsequent financial stability problems we analyze the sequential deterioration of credit in spain considering rating changes in securitized deals using a sample of 20 286 observations on securities and rating changes from 2000q1 to 2010q1 we build a model in which loan growth on balance sheet credit quality and rating changes are estimated simultaneously our results suggest that loan growth significantly affects on balance sheet loan performance with a lag of at least two years additionally loan performance is found to explain rating changes with a lag of four quarters importantly bank characteristics in particular observed solvency cash flow generation and cost efficiency also affect ratings considerably additionally these other bank characteristics seem to a higher weight in the rating changes of securities issued by savings banks as compared with commercial banks

financial innovation the bright and the dark sides based on data from 32 countries over the period 1996 2010 this paper is the first to assess the relationship between financial innovation on the one hand and bank growth and fragility as well as economic growth on the other hand we find that different measures of financial innovation capturing both a broad concept and specific innovations are associated with faster bank growth but also higher bank fragility and worse bank performance during the recent crisis these effects are stronger in countries with larger securities markets and more restrictive regulatory frameworks in spite of these seemingly ambiguous findings our evidence points to a positive net effect of financial innovation on economic growth financial innovation is associated with higher growth in countries and industries with better growth opportunities

food price seasonality in africa measurement and extent everyone knows about seasonality but what exactly do we know this study systematically measures seasonal price gaps at 193 markets for 13 food commodities in seven african countries it shows that the commonly used dummy variable or moving average deviation methods to estimate the seasonal gap can yield substantial upward bias this can be partially circumvented using trigonometric and sawtooth models which are more parsimonious among staple crops seasonality is highest for maize 33 percent on average and lowest for rice 16 percent this is two and a half to three times larger than in the international reference markets seasonality varies substantially across market places but maize is the only crop in which there are important systematic country effects malawi where maize is the main staple emerges as exhibiting the most acute seasonal differences reaching the sustainable development goal of zero hunger requires renewed policy attention to seasonality in food prices and consumption

options short sale constraints and market efficiency a new perspective this paper undertakes a new investigation of the potential for options to mitigate short sale constraints i find that option introduction alleviates 79 of the price adjustment efficiency disparity between short sale constrained and unconstrained stocks in relation to negative news no significant improvement in adjustment efficiency is found in response to positive information these results are robust to controls for endogeneity biases associated with the option introduction selection process further i find evidence that post option improvement in efficiency is similar in relation to private and public information this suggests that short sale constraint effects stem at least in part from an irrational optimism bias or another behavioral source as suggested theoretically by miller 1977 collectively these results suggest that options act as an effective substitute to short sales significantly contributing to the informational efficiency of the market

stock return comovement around the dow jones islamic market world index revisions we examine patterns of comovement in stock returns around the dow jones islamic market world index djimwi quarterly revision events our analysis is based on a sample of 8250 companies from eighteen countries during the period may 1999 june 2012 we find that a stock s comovement with the djimwi increases when it joins and decreases when it leaves the index we also find that the comovement of newly added deleted stocks with the existing djimwi constituents increases declines during periods of high trading activity and during the month of ramadan further tests reveal that changes in the fundamentals have no impact on the comovements of added and deleted stocks overall our results indicate that stock returns respond to the emotional state of investors around information free events

managerial incentives and investment in r d in large multiproduct firms incentives for division managers in large firms affect their risk orientation and thus their decisions to invest in r d this paper reviews theory and hypothesizes that division managers incentive compensation that is based on financial performance is negatively related to risk taking as measured by r d intensity results of a study of 184 major u s firms suggest that incentives based on short term annual division financial performance are negatively related to total firm r d intensity after controlling for industry r d intensity firm diversification size and group structure furthermore the results suggest that an emphasis on long term financial incentives may mitigate the negative relationship between these incentives and r d intensity but does not promote risk taking the results suggest the importance of emphasizing strategic controls evaluating division managers based on operational understanding of strategies proposed strategic criteria as opposed to the use of financial controls evalua

shifting sands the changing case for monetizing project food aid in bangladesh abstract monetization involves local sale of food aid commodities and using the cash to finance other programs to explore the likely consequences of monetization this paper combines a stockpile of recent microeconomic evidence from food and cash for work projects in bangladesh together with a multimarket simulation model results suggest that a switch from food for work s ffw in kind deliveries of wheat to an identical wheat financed cash for work cfw program would unambiguously improve welfare of the poor

reassessing the impact of option introductions on market quality a less restrictive test for event date effects prior research concludes that option introductions improve the average liquidity of the underlying stocks we develop an improved generalizable test to assess whether market quality changes occur on or near an event date applying this method to option listing events we conclude that options do not systematically improve the market quality of the underlying security rather the market quality of the underlying security improves before the listing decision hazard model tests indicate that improving liquidity is a selection criterion in the option listing decision moreover these tests suggest that the size of a stock s bid ask spread is the single most important option listing determinant this study reexamines the impact of equity option introductions on stock market liquidity previous studies find an improvement in market quality charac teristics after option introductions and conclude that options improve the quality of the underlying market 1 in this paper we make several new contributions first we present and adopt a more flexible empirical tool for identifying regime shifts when event selection may be endogenously determined second using this method we reverse two major findings of the existing literature that option in troductions reduce spreads and increase volume finally we find that the bid ask spread is an important and perhaps the most important determinant of the option

credit default swaps and the empty creditor problem the empty creditor problem arises when a debtholder has obtained insurance against default but otherwise retains control rights in and outside bankruptcy we analyze this problem from an ex ante and ex post perspective in a formal model of debt with limited commitment by comparing contracting outcomes with and without insurance through credit default swaps cds we show that cds and the empty creditors they give rise to have important ex ante commitment benefits by strengthening creditors bargaining power they raise the debtor s pledgeable income and help reduce the incidence of strategic default however we also show that lenders will over insure in equilibrium giving rise to an inefficiently high incidence of costly bankruptcy we discuss a number of remedies that have been proposed to overcome the inefficiency resulting from excess insurance jel g30 g32 g33 one of the most significant changes in the debtor creditor relationship in the

forecasting sales of slow and fast moving inventories abstract traditional computerised inventory control systems usually rely on exponential smoothing to forecast the demand for fast moving inventories practices in relation to slow moving inventories are more varied but the croston method is often used it is an adaptation of exponential smoothing that 1 incorporates a bernoulli process to capture the sporadic nature of demand and 2 allows the average variability to change over time the croston approach is critically appraised in this paper corrections are made to underlying theory and modifications are proposed to overcome certain implementation difficulties a parametric bootstrap approach is outlined that integrates demand forecasting with inventory control the approach is illustrated on real demand data for car parts

short term safety or long term failure empirical evidence of the impact of securitization on bank risk based on a sample of u s commercial banks from 2002 to 2012 this paper shows that bank loan securitization has a significant and positive impact on both z scores and the likelihood of bank failure indicating a short term risk reduction and a long term risk increase effect we also find disparate impacts between mortgage and non mortgage securitization loan sale activities are found to have a similar impact to securitization

urban bias in price risk the geography of food price distributions in low income economies the geography of agricultural marketing has important implications for the stochastic distribution of agricultural commodity prices this article proposes that objective food price risk differs between rural and urban areas of infrastructure poor economies characterised by spatially concentrated patterns of foodgrains storage this difference implies an urban bias having adverse welfare effects for peasants who seasonally switch between net food seller and net food buyer positions empirical analysis of rice price data from madagascar suggests that price variability and skewness indeed differ between rural and urban areas in ways that adversely influence the relative welfare of rural peasants

seasonality of income and poverty in bangladesh abstract seasonal food deprivation in bangladesh locally known as monga sometimes rises to the level of famine during the pre harvest period of aman rice an analysis of household income and expenditure survey data shows that income and consumption are lower during monga than in other seasons and that seasonal income greatly influences seasonal consumption econometric estimates reject the hypothesis of perfect consumption smoothing in the northwestern region of greater rangpur rural households suffer disproportionately from monga seasonal differences in poverty across regions are due mainly to differences in household specific seasonality of income and consumption income diversification explains the lower incidence of income seasonality observed in non rangpur regions to contain seasonal hunger in greater rangpur public policies should promote rural income diversification together with seasonal migration a flexible microfinance scheme that provides both production and consumption loans on flexible repayment terms could help diversify income and reduce seasonality of income and poverty

counterparty risk in financial contracts should the insured worry about the insurer we analyze the efiect of counterparty risk on insurance contracts using the case of credit risk transfer in banking in addition to the familiar moral hazard problem caused by the insured s ability to in uence the probability of a claim this paper uncovers a new moral hazard problem on the other side of the market we show that the insurer s investment strategy may not be in the best interests of the insured the reason for this is that if the insurer believes it is unlikely that a claim will be made it is advantageous for them to invest in assets which earn higher returns but may not be readily available if needed this paper models both of these moral hazard problems in a unifled framework we flnd that instability in the insurer can create an incentive for the insured to reveal superior information about the risk of their investment in particular a unique separating equilibrium may exist even in the absence of any signalling device this provides one of the main contributions of the paper an example in which cheap talk can achieve separation in an insurance market

sources of food price volatility and child malnutrition in niger and malawi in recent times considerable attention has been paid to the nutritional impact of the sharp hikes in the international food prices which took place in 2007 8 and 2010 11 while understandable this growing focus has perhaps obscured the impact of other variables affecting malnutrition in sub saharan africa i e the long term impact of agricultural policies on food supply and prices large and persistent seasonal variations in food prices and the impact of famines which still affect parts of the continent this paper focuses on the relative impact of these factors on child malnutrition measured by the number of child admissions to feeding centres in malawi and niger two countries which closely represent the situation of other small landlocked subsistence agricultural economies facing severe food security problems our analysis shows that in these countries the drivers of changes in domestic staple prices and child malnutrition are related not only or not primarily to variations of international food prices but also to the impact of agricultural policies on food production and prices in a persistent food price seasonality and in recurrent and poorly managed famines these factors can exert a strong upward pressure on food prices and child malnutrition even during years of falling international prices

financial innovation and bank behavior evidence from credit markets this paper investigates whether and through which channel the active use of credit derivatives changes bank behavior in the credit market and how this channel was affected by the crisis of 2007 2009 our principal finding is that banks with larger gross positions in credit derivatives charge significantly lower corporate loan spreads while banks net positions are not consistently related to loan pricing we argue that this is consistent with banks passing on risk management benefits to corporate borrowers but not with alternative channels through which credit derivative use may affect loan pricing we also find that the magnitude of the risk management effect remained unchanged during the crisis period of 2007 2009 in addition banks with larger gross positions in credit derivatives cut their lending by less than other banks during the crisis and have consistently lower loan charge offs in sum our study is suggestive of significant risk management benefits from financial innovations that persist under adverse conditions that is when they matter most

effects of correlation on intermittent demand forecasting and stock control abstract this study investigates the effects of three different types of correlation on forecasting and stock control of intermittent demand items applying appropriate forecasting and stock control methods to theoretically generated compound poisson demand data we show that correlation in intermittent demand does play a role in forecast quality and stock control performance negative autocorrelation levels lead to higher service levels than positive values while cost does not significantly change our results also show that high intermittency levels intensify these changes in service level we also show that cross correlation produces results in the opposite direction of autocorrelation in size or intervals that is positive negative cross correlation leads to higher lower service levels

the benefits of lending relationships evidence from small business data this paper empirically examines how ties between a firm and its creditors affect the availability and cost of funds to the firm we analyze data collected in a survey of small firms by the small business administration the primary benefit of building close ties with an institutional creditor is that the availability of financing increases we find smaller effects on the price of credit attempts to widen the circle of relationships by borrowing from multiple lenders increases the price and reduces the availability of credit in sum relationships are valuable and appear to operate more through quantities rather than prices

credit risk transfer and contagion some have argued that recent increases in credit risk transfer are desirable because they improve the diversification of risk others have suggested that they may be undesirable if they increase the risk of financial crises using a model with banking and insurance sectors we show that credit risk transfer can be beneficial when banks face uniform demand for liquidity however when they face idiosyncratic liquidity risk and hedge this risk in an interbank market credit risk transfer can be detrimental to welfare it can lead to contagion between the two sectors and increase the risk of crises

investment risk cds insurance and firm financing abstract we develop a model in which investment risk drives the demand for cds insurance the model shows the efficiency of cds contracting over the state of the economy it shows that cds overinsurance insurance in excess of renegotiation surpluses is procyclical allowing for greater financing when the probability of default is lower our theory predicts that the incidence of so called empty creditors is largely constrained to firms that are safer face lower bankruptcy costs have more severe management creditor agency problems and whose assets are costlier to verify our analysis generates a number of empirical predictions and provides new insights into the regulation of cds markets

financial innovation macroeconomic stability and systemic crises we present a general equilibrium model of intermediation designed to capture some of the key features of the modernnancial system the model incorporatesnan cial constraints and state contingent contracts and contains a clearly dened pe cuniary externality associated with assetre sales during periods of stress if a sufciently severe shock occurs during a credit expansion this externality is capa ble of generating a systemicnancial crisis that may be self fullling our model suggests thatnancial innovation and greater macroeconomic stability may have madenancial crises in developed countries less likely than in the past but poten tially more severe

contagion across us and european financial markets evidence from the cds markets abstract this study investigates whether contagion occurred during the recent global financial crisis across european and us financial markets the methodologies used to test for contagion are based on changes in correlation coskewness cokurtosis and covolatility these tests are applied to a set of bank sector cds insurance sector cds sovereign bonds equity and volatility indices the findings indicate significant evidence of contagion especially through the channels of higher order moments

the liberalization of rice marketing in madagascar abstract madagascar s experience with rice marketing liberalization between 1985 and 1988 illustrates the many obstacles in the way of effective deregulation of agricultural markets the resistance of ambiguous regulation continuing limits on free entry attempts at cartelization and tenacious resistance of existing stakeholders and institutions at the same time the experience shows the ability of higher prices and freer markets to overcome much of this resistance and to stimulate production even in the presence of so called structural constraints such as poor roads weak extension services inadequate credit systems and input supply arrangements