north american money surprises and financial market reactions an empirical note abstract in the late 1970s u s and canadian weekly money supply announcements occurred almost simultaneously the unanticipated components of these announcements are shown to be correlated and the importance of this factor for findings in the money surprise market response literature is explored

does shari ah screening cause abnormal returns empirical evidence from islamic equity indices islamic equity funds are subject to the screening criteria for stock selection imposed by the principles of islamic jurisprudence shari ah equities must pass three basic screens revenue source business activity and financial factors to be included in an islamic fund however screening criteria are not universal especially for the financial factors one can use financial ratios based on either the book value of total assets or the market value of equity for screening of stocks this may not only result in a different portfolio composition but also entail diverse rebalancing and monitoring costs the performance of 29 islamic equity indices ieis versus conventional indices from four major international index providers using different shari ah screening criteria are analyzed in a single as well as in a multi equation framework the use of a multi equation framework has the added advantage of utilizing the information content of different screening criteria adopted by different index providers the empirical findings suggest that the difference in screening criteria does not significantly affect the performance of ieis returns deviation if any stems from the relative riskiness of the iei as compared with the relevant benchmark work needs to done to streamline the quantitative screening criteria to avoid confusion among the investing public

bank lending channel in a dual banking system why are islamic banks so responsive we examine the interest rate sensitivity of both deposits and credits at islamic and conventional banks in turkey we find that the bank lending channel is especially operative for islamic banks impulse responses for conventional and islamic banks reveal that islamic bank depositors sensitivity to policy rate changes is substantially larger than that of conventional bank depositors next to heavily dependence on deposit funding we consider that inertia in islamic bank deposit rates impedes these banks to keep those depositors who consider the opportunity cost of monetary policy rates is unbearable on the lending side we obtain similar results implying that tight monetary policy leads to a larger contraction in islamic bank credits this finding is a reflection of the favourable attitude of islamic banks towards small and medium sized enterprise sme financing when similar relationships are analysed for currency and inflation shocks we again find larger responses for islamic banks showing the cyclical nature of sme credits

on the comparative performance of socially responsible and islamic mutual funds this is the first study to provide comprehensive analyses of the relative performance of both socially responsible investment sri and islamic mutual funds the analysis proceeds in two stages in the first the performance of the two categories of funds is measured using partial frontier methods in the second stage we use quantile regression techniques by combining two variants of the free disposal hull fdh methods order m and order in the first stage of analysis and quantile regression in the second stage we provide detailed analyses of the impact of different covariates across methods and across different quantiles in spite of the differences in the screening criteria and portfolio management of both types of funds variation in the performance is only found for some of the quantiles of the conditional distribution of mutual fund performance we established that for the most inefficient funds the superior performance of sri funds is significant in contrast for the best mutual funds this evidence vanished and even islamic funds perform better than sri these results show the benefits of performing the analysis using quantile regression

platform pricing in mixed two sided markets when a consumer can appear on both sides of a two sided market such as a user who both buys and sells on ebay the platform may want to bundle the services it provides to two sides i develop a general model for such mixed two sided markets and show that a monopolist platform s incentive to bundle and its optimal pricing strategy are determined by simple formulas using familiar price elasticities of demand which embody the bundling effect and price cost margins adjusted for network externalities which incorporate two sidedness the optimal pricing rule in such markets generalizes the familiar lerner formula

monetary policy regimes expected inflation and the response of interest rates to money announcements this paper examines the response of the term structure of interest rates to weekly money announcements estimated responses for both the pre and post october 1979 periods are first presented then two competing hypotheses involving the policy anticipations and expected inflation effects are formally specified and compared with the estimated responses both hypotheses are found to be consistent with the responses but they have sharply different implications about the federal reserve s short run monetary policy by exploiting these different implications additional empirical results focusing directly on the money stock process support the policy anticipations hypothesis

money supply announcements and interest rates another view in this paper i use a new approach to analyze the impact of money supply announcements on the bond market before 1980 the only available work on this subject consisted of a few unpublished papers by conrad 1978 sivesind 1978 and urich 1979 1 more recently published papers by grossman 1981 and urich and wachtel 1981 have appeared roley 1982 extends the grossman study to incorporate data after the federal reserve policy statement of october 6 1979 both grossman and urich and wachtel are primarily concerned with the question of money market efficiency using survey data made available by money market services of san francisco and data on treasury bill yields each finds that the market responds quickly to unanticipated changes in the money supply but that anticipated changes have no effect on interest rates in addition grossman finds that when he adds other variables such as past changes in the money

portfolio optimization with stochastic dominance constraints abstract we consider the problem of constructing a portfolio of finitely many assets whose return rates are described by a discrete joint distribution we propose a new portfolio optimization model involving stochastic dominance constraints on the portfolio return rate we develop optimality and duality theory for these models we construct equivalent optimization models with utility functions numerical illustration is provided

new strategies and a new paradigm for shariah compliant portfolio optimization in this paper we analyze the effects of different strategies to construct shariah compatible financial portfolios the difference between conventional and current shariah portfolio management is the application of sector screens and financial screens by which the asset universe is reduced yet here different schools of scholars define different screening rules leading to significant differences with respect to compliance but also with respect to performance after analyzing this discrepancy we propose several new strategies to apply the inconsistent rule systems and a new paradigm for defining shariah compliance under this new paradigm compliance is attributed to the portfolio and not to the individual assets of the universe we report results of an empirical study analyzing the potentials of these strategies and of the paradigm we can show that under the proposed concepts shariah compliant portfolios can be realized which have return and risk profiles comparable to the conventional non constrained portfolios

why interest rates react to money announcements an explanation from the foreign exchange market abstract when the fed announces a money supply greater than had been expected interest rates rise why one explanation is that the market raises its estimate of the future rates of money growth and inflation and bids up nominal interest rates we offer contrary evidence on such days the dollar appreciates not depreciates an alternative explanation is that the market perceives the change in the money stock as a transitory fluctuation that the fed will reverse in the future the anticipated future tightening raises today s real interest rate causes a capital inflow and appreciates the dollar the result in fact observed

counterfactual decomposition of changes in wage distributions using quantile regression we propose a method to decompose the changes in the wage distribution over a period of time in several factors contributing to those changes the method is based on the estimation of marginal wage distributions consistent with a conditional distribution estimated by quantile regression as well as with any hypothesized distribution for the covariates comparing the marginal distributions implied by different distributions for the covariates one is then able to perform counterfactual exercises the proposed methodology enables the identification of the sources of the increased wage inequality observed in most countries specifically it decomposes the changes in the wage distribution over a period of time into several factors contributing to those changes namely by discriminating between changes in the characteristics of the working population and changes in the returns to these characteristics we apply this methodology to portuguese data for the period 1986 1995 and find that the observed increase in educational levels contributed decisively towards greater wage inequality copyright 2005 john wiley sons ltd

islamic banking and finance recent empirical literature and directions for future research this paper examines the recent empirical literature in islamic banking and finance highlights the main findings and provides a guide for future research early studies focus on the efficiency production technology and general performance features of islamic versus conventional banks whereas more recent work looks at profit and loss sharing pls behaviour competition risks as well as other dimensions such as small business lending and financial inclusion apart from key exceptions the empirical literature suggests no major differences between islamic and conventional banks in terms of their efficiency competition and risk features although small islamic banks are found to be less risky than their conventional counterparts there is some evidence that islamic finance aids inclusion and financial sector development results from the empirical finance literature dominated by studies that focus on the risk return features of mutual funds finds that islamic funds perform as well if not better than conventional funds there is little evidence that they perform worse than standard industry benchmarks some recent evidence however suggests that islamic bond sukuk issuance destroys value for shareholders

tying in two sided markets with multi homing this paper analyzes the effects of tying on market competition and social welfare in two sided markets when economic agents can engage in multi homing by participating in multiple platforms to reap maximal network benefits the model shows that tying induces more consumers to multi home and makes platform specific exclusive content available to more consumers which is beneficial to content providers as a result tying can be welfare enhancing if multi homing is allowed even in cases where its welfare impacts are negative in the absence of multi homing the analysis thus can have important implications for recent antitrust cases in industries where multi homing is prevalent

platform competition in two sided markets many if not most markets with network externalities are two sided to succeed platforms in industries such as software portals and media payment systems and the internet must get both sides of the market on board accordingly platforms devote much attention to their business model that is to how they court each side while making money overall this paper builds a model of platform competition with two sided markets it unveils the determinants of price allocation and end user surplus for different governance structures profit maximizing platforms and not for profit joint undertakings and compares the outcomes with those under an integrated monopolist and a ramsey planner jel l5 l82 l86 l96

the effect of unanticipated money on the money and foreign exchange markets abstract a number of studies have attempted to determine why unanticipated increases in the money supply are positively correlated with money market interest rates by examining the response of the foreign exchange market to unanticipated changes in the money stock they have found a significant positive relationship between unanticipated increases in the money supply and the foreign exchange value of the dollar and have interpreted this as evidence for the anticipated liquidity effect hypothesis however these results support this hypothesis only if both markets respond simultaneously to unanticipated changes in money this paper examines the cross market consistency of the response using six bilateral exchange rates and the treasury bill rate all measured over a narrow time interval the results show that in general these markets do not respond simultaneously to money announcements

tail dependence risk exposure and diversification potential of islamic and conventional banks this paper undertakes a rolling window comparative analysis of risks for portfolios consisting of gcc islamic and conventional bank indices we draw our empirical results by employing canonical dr

cross sided liquidity externalities we study the empirical relevance of the participation externality between liquidity suppliers makers and demanders takers i e whether liquidity demand attracts or reduces liquidity supply and vice versa we use exogenous shocks to exchange fees and technology as experiments to identify cross sided complementarities between liquidity suppliers and demanders in the u s equity market we find that the externality is large and positive on average however the externality is negative in periods of high adverse selection we quantify the economic significance of the externality by evaluating an exchange s revenue after a fee change the internet appendix is available at https doi org 10 1287 mnsc 2016 2658 this paper was accepted by lauren cohen finance

bundling as an entry barrier in this paper we look at the case for bundling in an oligopolistic environment we show that bundling is a particularly effective entry deterrent strategy a company that has market power in two goods a and b can by bundling them together make it harder for a rival with only one of these goods to enter the market bundling allows an incumbent to credibly defend both products without having to price low in each the traditional explanation for bundling that economists have given is that it serves as an effective tool of price discrimination by a monopolist although price discrimination provides a reason to bundle the gains are small compared with the gains from the entry deterrent effect i introduction in this paper we look at the case for bundling in an oligopolistic environment we show that bundling is a particularly effective entry deterrent strategy a company that has market power in two goods a and b can by bundling them together make it harder for a rival with only one of these goods to enter the market bundling allows an incumbent to defend both products without having to price low in each while it is still possible to compete by offering a rival bundle a monopolist can significantly lower the potential profits of a one product entrant without having to engage in limit pricing prior to entry we also show that bundling continues to be an effective pricing tool even if entry deterrence fails or if there is already an existing one product rival a company with a monopoly in product a and a duopoly in product b makes higher profits by selling an a b bundle than by selling a and b independently leveraging market power from a into b and accepting some one product competition against the bundle is better than using the monopoly power in good a all by itself since bundling mitigates the impact of competition on the incumbent an entrant can expect the bundling strategy to persist even without any commitment the traditional explanation for bundling that economists have given is that it serves as an effective tool of price discrimination by a monopolist see stigler 1968 adams and yellen

business to business bargaining in two sided markets abstract bargaining regularly takes place on the business to business side of two sided markets however little is known about the consequences of these negotiations in this paper we allow the platform or a policy maker to choose between a standard design offering posted prices to both sides or a design with bargaining offering a posted price to consumers and negotiating with at least some firms we find that the platform pursues negotiations when it has a strong bargaining position and does so by targeting firms with the largest network effects while this behavior may appear exploitive we show that profits and welfare often align across platform designs this alignment stems from how bargaining incentivizes the platform greater platform bargaining power allows the platform to extract more of the network surpluses since it can convert more of the firm surplus into profits and this incentivizes the platform to draw in greater participation generating greater welfare these results suggest that platform and policy maker preferences often align in this setting

the response of short term interest rates to weekly money announcements each friday at 4 10 p m est the federal reserve announces its estimate of the narrowly defined money stock for the statement week ending nine days previously these money announcements have become one of the main events in financial markcts if for no other reason than the fact that significant movements in interest rates have been associated with large unanticipated changes in the money stock moreover since the late 1970s interest rate fluctuations in response to money stock announcements have dramatically increased over the 1l 2 hour intervals spanning the weekly announcements for example the variance of the change in the threemonth treasury bill yield in the three years since october 1979 is more than thirty times larger than that of the previous two year period l two factors may account for a large portion of the increased volatility of shortterm interest rates first on october 6 1979 the federal reserve adopted a reserve aggregate approach to monetary control replacing a procedure that emphasized stability of short term yields second despite the greater emphasis placed on monetary control the variance of weekly announced changes in the money stock has risen by about 70 percent since late 1979 in turn if greater volatility of announced changes makes future changes more difficult to predict the volatility of unanticipated weekly changes in money would have also increased 2 thus if financial markets are efficient and if weekly money announcements contain relevant information larger unanticipated changes in money may have caused larger fluctuations in interest rates

does the shariah screening process matter evidence from shariah compliant portfolios abstract this study compares the performance of market weighted shariah compliant portfolios scps with conventional benchmark portfolios cbps from the usa canada europe the gcc and japan portfolios are constructed from constituent level monthly price data using the shariah screening criteria as proposed by msci ftse dow jones s p and aaoifi the unique scp construction approach used in this study removes any concerns of performance deviation due to the portfolio construction methodology rebalancing timing and management skills for security selection or market timing empirical results indicate that scps are generally less risky than cbps we also find that shariah screening standards are insignificant in their effect on return performance scps using the bvta approach usually report a little better nominal and risk adjusted returns than scps using the mve approach for financial screening the negligible difference in risk adjusted performance and rebalancing based on different criteria indicate a need for greater consistency in applying shariah screening standards

efficiency of mutual funds and portfolio performance measurement a non parametric approach abstract in finance portfolio performance assessment is an important area of research the two popular indices of performance are the jensen s alpha and the sharpe index however there are a number of shortcomings of the above measures that have been highlighted in the literature we propose a new measure of performance that seeks to address the limitations of the earlier indices the new index is calculated by employing a well known method in operations research called data envelopment analysis we show the benefits of the proposed approach and assess the performance of mutual funds we compare the results with traditional indices of performance an interesting result we obtain is that the mutual funds are all approximately mean variance efficient

on the determinants of local government performance a two stage nonparametric approach abstract this article analyzes the efficiency of local governments in the comunitat valenciana spain and their main explanatory variables the analysis is performed in two stages firstly efficiency is measured via nonparametric activity analysis techniques specifically we consider both data envelopment analysis dea and free disposable hull fdh techniques the second stage identifies some critical determinants of efficiency focusing on both political and fiscal policy variables in contrast to previous two stage research studies our approach performs the latter attempt via nonparametric smoothing techniques rather than econometric methods such as ols or tobit related techniques results show that efficiency scores especially under the nonconvexity assumption fdh are higher for large municipalities thus there is empirical evidence to suggest that resources may be better allocated by large municipalities however the inefficiency found is not entirely attributable to poor management as second stage analysis reveals both fiscal and political variables to be explicably related to municipality performance moreover the explanatory variables impact on efficiency is robust to the chosen technique either convex dea or nonconvex fdh

the logic of financial westernization in the middle east abstract in the 19th century financial reforms in the middle east included the legalization of interest the establishment of secular courts and banking regulations all based on western models exploring why foreign institutions were transplanted this article shows that islamic law blocked evolutionary paths that might have generated financial modernization through indigenous means sources of rigidity included 1 the islamic law of commercial partnerships which limited enterprise continuity 2 the islamic inheritance system which restrained capital accumulation 3 the waqf system which inhibited resource pooling and 4 islam s traditional aversion to the concept of legal personhood which hampered private organizations

time varying competition normative models typically suggest that prices rise in periods of high demand and cost however in many markets prices fall when demand or costs rise this inconsistency occurs because the normative models assume that competitive intensity does not change with demand and cost conditions over time we therefore introduce the notion of time varying competition by suggesting that it is important not only to account for the direct effect of demand and cost on prices e g higher demand means higher prices but also the indirect effect of demand and cost changes on competition e g higher demand could cause more competition and hence lower prices we develop a general unified framework to empirically model the direct and indirect effects of demand and cost shifts on pricing in differentiated product markets our approach allows us to measure the indirect effect of multiple demand and cost drivers on competitive intensity and test predictions from alternative theories of repeated games the empirical application is to the u s photographic film industry where there are two main players kodak and fuji we find that the indirect effects are highly significant and comparable in magnitude to the direct effects competitive intensity is greater in periods of high demand and lower cost and is moderated by whether demand or costs are expected to grow or decline interestingly we find asymmetries in the competitive responses of kodak and fuji while kodak is sensitive to demand factors fuji is sensitive to costs our results suggest that market characteristics such as observability of competitor prices can be an important determinant of how competitive intensity is affected by demand and cost conditions

tying and freebies in two sided markets abstract in two sided markets where platforms are constrained to set non negative prices tying can be deployed by platforms as a tool to introduce implicit subsidies for a monopoly this raises participation and benefits consumers on both sides in a duopoly tying on one side makes a platform more or less competitive on the other side depending on externalities tying may not be ex ante optimal while the competing platform may benefit from it the impact on consumers surplus depends on whether competition is softened or intensified on the profitable side moreover tying increases total welfare if network effects are strong

chicken and egg competition among intermediation service providers we analyze a model of imperfect price competition between intermediation service providers we insist on features that are relevant for informational intermediation via the internet the presence of indirect network externalities the possibility of using the nonexclusive services of several intermediaries and the widespread practice of price discrimination based on users identity and on usage efficient market structures emerge in equilibrium as well as some specific form of inefficient structures intermediaries have incentives to propose non exclusive services as this moderates competition and allows them to exert market power we analyze in detail the pricing and business strategies followed by intermediation services providers copyright 2003 by the rand corporation

ethical screening and financial performance the case of islamic equity funds whether ethical screening affects portfolio performance is an important question that is yet to be settled in the literature this paper aims to shed further light on this question by examining the performance of a large global sample of islamic equity funds iefs from 1984 to 2010 we find that iefs underperform conventional funds by an average of 40 basis points per month consistent with the underperformance hypothesis in line with popular media claims that islamic funds are a safer investment iefs outperformed conventional funds during the recent banking crisis however we find no such outperformance for other crises or high volatility periods based on fund holdings based data we provide evidence of a negative curvilinear relation between fund performance and ethical screening intensity consistent with a return trade off to being more ethical

mixed bundling in two sided markets in the presence of installed base effects we analyze mixed bundling in two sided markets where installed base effects are present and find that the pricing structure deviates from traditional bundling as well as the standard two sided markets literature we determine prices on both sides fall with bundling mixed bundling acts as a price discrimination tool segmenting the market more efficiently consequently as a by product of this price discrimination the two sides are better coordinated and social welfare is enhanced we show unambiguously that platform participations increase on both sides of the market after theoretically evaluating the impact mixed bundling has on prices and welfare we take the model predictions to data from the portable video game console market we find empirical support for all theoretical predictions this paper was accepted by j miguel villas boas marketing

the dynamic effects of bundling as a product strategy several key questions in bundling have not been empirically examined in marketing is mixed bundling more effective than pure bundling or pure components does correlation in consumer valuations make bundling more or less effective does bundling serve as a complement or substitute to network effects to address these questions we develop a consumer choice model from microfoundations to capture the essentials of our setting the handheld video game market we provide a framework to understand the dynamic long term effects of bundling on demand the primary explanation for the profitability of bundling relies on homogenization of consumer valuations for the bundle allowing the firm to extract more surplus we find that bundling can be effective through a novel and previously unexamined mechanism of dynamic consumer segmentation which operates independent of the homogenization effect and can in fact be stronger when the homogenization effect is weaker we also find that bundles are treated as separate products distinct from component products by consumers sales of both hardware and software components decrease in the absence of bundling and consumers who had previously purchased bundles might delay purchases resulting in lower revenues we also find that mixed bundling dominates pure bundling and pure components in terms of both hardware and software revenues investigating the link between bundling and indirect network effects we find that they act as substitute strategies with a lower relative effectiveness for bundling when network effects are stronger

changing interest rate responses to money announcements 1977 1983 abstract this paper investigates when and how the response of interest rates to money announcements changed in recent years the response of both short and long rates rises in october 1979 but drops during 1981 during mid 1982 the response of long rates raises again but without a change in the response of short rates despite a number of ex post explanations for these shifts none of the major hypotheses of why interest rates respond to money announcements provides a complete ex ante explanation of these response shifts

the heterogeneity of socially responsible investment many writers have commented on the heterogeneity of the socially responsible investment sri movement however few have actually tried to understand and explain it and even fewer have discussed whether the opposite standardisation is possible and desirable in this article we take a broader perspective on the issue of the heterogeneity of sri we distinguish between four levels on which heterogeneity can be found the terminological definitional strategic and practical whilst there is much talk about the definitional ambiguities of sri we suggest that there is actually some agreement on the definitional level there are at least three explanations which we suggest can account for the heterogeneity on the other levels cultural and ideological differences between different regions differences in values norms and ideology between various sri stakeholders and the market setting of sri discussing the implications of the three explanations for the sri market we suggest that there is reason to be sceptical about the possibilities of standardisation if not standardisation is imposed top down whether this kind of standardisation is desirable or not we argue depends on what the motives for it would be to the extent that standardisation may facilitate the mainstreaming of sri it could be a good thing but we entertain doubts about whether mainstreaming really requires standardisation

assessing the performance of alternative investments using non parametric efficiency measurement approaches is it convincing abstract dea based performance assessment in the alternative investment fund industry is often motivated by the fact that dea is capable of simultaneously handling multiple input risk and multiple output return measures thereby still offering a single real number as a performance index without utilizing subjective weights to aggregate these inputs and outputs this paper aims at investigating whether dea based performance indexes previously used to assess alternative investment fund performance are actually able to satisfy these properties and to contrast the findings using a dea based performance index with those using a traditional financial performance index

technological change technological catch up and capital deepening relative contributions to growth and convergence we decompose labor productivity growth into components attributable to 1 technological change shifts in the world production frontier 2 technological catch up movements toward or away from the frontier and 3 capital accumulation movement along the frontier the world production frontier is constructed using deterministic methods requiring no specification of functional form for the technology nor any assumption about market structure or the absence of market imperfections we analyze the evolution of the cross country distribution of labor productivity in terms of the tripartite decomposition finding that technological change is decidedly nonneutral and that both growth and bipolar international divergence are driven primarily by capital deepening jel o30 o47 d24

competition between networks a study of the market for yellow pages this paper estimates the importance of network effects in the market for yellow pages i estimate three simultaneous equations consumer demand for usage of a directory advertiser demand for advertising and a publisher s first order condition derived from profit maximizing behaviour estimation shows that advertisers value consumer usage and that consumers value advertising implying a network effect i find that internalizing network effects would significantly increase surplus as an application i consider whether the market benefits from monopoly which takes advantage of network effects or oligopoly which reduces market power i find that a more competitive market is preferable copyright 2004 wiley blackwell

are survey forecasts of macroeconomic variables rational this article examines the rationality of forecasts of 11 macroeconomic variables among the nonstationary series only surveys of housing starts the unemployment rate and the trade balance are rational forecasts among the stationary series survey forecasts for only consumer prices and personal income are consistent with rational expectations lack of rationality in forecasts of durable goods industrial production leading indicators money supply and retail sales suggests that such forecasts do not fully exploit public information indeed survey forecasts for industrial production and retail sales can be improved significantly with past information copyright 1995 by university of chicago press

optimal bundling and pricing under a monopoly contrasting complements and substitutes from independently valued products we develop an analytical model of contingent valuations and address two questions of import to a monopolist i should a given pair of complements or substitutes be sold separately pure components together pure bundling or both mixed bundling and at what prices ii how do optimal bundling and pricing strategies for complements and substitutes differ from those for independently valued products we find that the combination of marginal cost levels and the degree of complementarity or substitutability determines which of the three bundling strategies is optimal complements and substitutes should typically be priced higher than independently valued products

the credit view financial announcements and interesr rate responses abstract proponents of the credit view have argued that aggregate commercial bank lending decisions have strong macro economic effects this view is in contrast to the monetarist view that it is sufficient to consider the liability side of the banking sector s balance sheet in analyzing the economic outlook in this paper we examine whether or not financial markets reacted to unexpected changes in aggregate commercial bank lending during much of the 1980s in contrast to the implications of the credit view no evidence of a significant reaction to such shocks is uncovered however there is evidence to suggest that unexpected commercial paper activity is important to financial markets but the sign of the association is the opposite of that predicted by the credit view

tying in two sided markets and the honor all cards rule abstract payment card associations offer both debit and credit cards and sometimes engage in a tie in on the merchant side through the so called honor all cards hac rule this article analyzes the impact of the hac rule using a simple model with two types of transactions subject to different competitive pressures in the no hac rule benchmark model the interchange fee if the transfer from the merchant s bank to the cardholder s bank on the card subject to platform competition is socially too low and the if on the card protected from competition is either optimal or too high in either case the hac rule not only benefits the multi card platform but also raises social welfare due to a rebalancing effect the paper then investigates a number of extensions of the benchmark model including varying degrees of substitutability between the two cards merchant heterogeneity and platform differentiation while the hac rule may no longer raise social welfare under all values of the parameters the basic and socially beneficial rebalancing effect unveiled in the benchmark model is robust

tying foreclosure and exclusion in recent years the leverage theory of tied good sales has faced heavy and influential criticism in an important sense though the models used by its critics are actually incapable of addressing the leverage theory s central concerns here the author reconsiders the leverage hypothesis and argues that tying can indeed serve as a mechanism for leveraging market power the mechanism through which this leverage occurs its profitability and its welfare implications are discussed in detail copyright 1990 by american economic association

gaussian demand and commodity bundling in an important and widely cited essay adams and yellen 1976 examine the use of package selling as a price discrimination device they consider a monopolist producing two goods with constant unit costs and facing buyers with diverse tastes the marginal utility of a second unit of either good is assumed to be zero for all buyers the two goods are independent in demand for all buyers so that any buyer s reservation price for the first unit of either good is independent of the market price of the other thus the maximum amount any buyer would pay for a bundle consisting of one unit of each good is the sum of the two reservation prices and buyers are completely described by the values of those two prices 2 resale markets are assumed away in order to obtain comparative results for alternative pricing strategies the distribution of reservation prices in the adams yellen framework is assumed to be bivariate normal implications of gaussian demand are explored pure bundling is shown to operate by reducing buyer diversity thus facilitating the capture of consumers surplus it generally makes buyers worse off than unbundled sales it is more profitable if average reservation prices are high enough mixed bundling combines advantages of both pure bundling and unbundled sales and it is generally strictly more profitable than either bundling which treats goods symmetrically seems most attractive under symmetric reservation price distributions i am indebted to severin borenstein for superb research assistance to the ford motor company for research support through a grant to m i t and to the harvard economics department for housing me as a visiting scholar while most of this research was performed of course only i can be held responsible for this essay s shortcomings 1 the first clear recognition of this possibility seems to have been by stigler 1968 but also see burstein 1960 2 paroush and peles 1981 relax the assumption that consumers purchase at most one unit of each good but they consider only two types of buyers both with linear demand functions they retain the assumption that demands are independent for all buyers telser 1979 and phillips 1981 use different frameworks to analyze bundling policies spence 1980 explores the relation between bundling across commodities as here and bundling multiple units of the same

market response to the weekly money supply announcements in the 1970s the hypothesis that the weekly announcement of the money supply affects interest rates is examined the announcement effect is interpreted as a policy anticipation effect that is an unanticipated increase in the money supply leads to an increase in interest rates in anticipation of future tightening by the federal reserve estimates of this effect with proxies for the unanticipated change constructed from a survey of money supply forecasts and an arima model indicate that a financial markets respond very quickly to the announcement and b the response was largest when policymakers emphasized the importance of the monetary aggregates financial market participants are careful observers of the weekly money supply announcement and generally agree that the announcement often leads to changes in interest rates this occurs because the announcement leads market participants to revise their expectations both of future federal reserve policy actions and of future economic conditions in this paper we examine the response of yields on treasury bills to the announcement of the money supply and the extent to which that response has varied in the last ten years money supply announcements may affect market interest rates in three ways first actual expansion of the money supply leads to lower interest rates through a liquidity effect however rapid monetary growth which is not anticipated leads market participants to expect the federal reserve to counteract such growth in the future as a consequence there may be a policy anticipation effect which causes higher interest rates in anticipation of future tightening furthermore prolonged rapid monetary growth also creates inflation and inflationary expectations which lead to higher interest rates thus there may exist a third effect the inflationary expectations effect which also leads to higher interest rates our interest in this paper is in the immediate market response to the weekly announcement of the money supply which as we argue below is most likely to be a policy anticipation effect the policy anticipation effect is best described by example suppose that the announced change in the money supply exceeds that which was expected by

policy regime changes and monetary expectations testing for super exogeneity abstract the super exogeneity status for weekly u s monetary expectations structure is examined the incomplete structure of the proposed model requires the use of an incidental parameter which is approximated by a linear function of certain instruments a super exogeneity test within the instrumental variables framework examines whether distributional changes stemming from the regime shifts affect the error correction parameter in the expectations structure under the assumption that the variance of the error correction term is constant the data evidence is found to reject super exogeneity

a critical review of sustainable business indices and their impact most studies into the performance of socially responsible investment vehicles have focused on the performance of sustainable or socially responsible mutual funds this research has been complemented recently by a number of studies that have examined the performance of sustainable investment indices in both cases the majority of studies have concluded that the returns of socially responsible investment vehicles have either underperformed or failed to outperform comparable market indices although the impact of sustainable indices to date has been limited the recent launch of sustainable indices by dow jones and ftse suggests that more attention is being paid to the subject by financial markets investors and companies this development raises a number of important issues which are reviewed in this article a the performance of indices compared with their benchmark indices b the methodologies employed in compiling the indices and c the impact of the indices on companies and the investment community the article concludes with a number of suggestions for areas that merit future research

two sided markets a progress report the paper provides a road map to the burgeoning literature on two sided markets and presents new results it identifies two sided markets with markets in which the structure and not only the level of prices charged by platforms matters the failure of the coase theorem is necessary but not sufficient for two sidedness the paper builds a model integrating usage and membership externalities that unifies two hitherto disparate strands of the literature emphasizing either form of externality and obtains new results on the mix of membership and usage charges when price setting or bargaining determine payments between end users

a robust nonparametric approach to evaluate and explain the performance of mutual funds the topic of the measurement of mutual funds performance is receiving an increasing interest both from an applied and a theoretical perspective beside the traditional financial literature a growing body of studies has started to apply the tools of frontier analysis for benchmarking comparisons in portfolio analysis our paper contributes to this literature proposing a robust nonparametric approach for analysing mutual funds it is based on the concept of order m frontier cazals c florens j p simar l 2002 nonparametric frontier estimation a robust approach journal of econometrics 106 1 25 and on a probabilistic approach daraio c simar l 2005 introducing environmental variables in nonparametric frontier models a probabilistic approach journal of productivity analysis 24 1 93 121 to find out the factors explaining mutual funds performance within this framework a decomposition of conditional efficiency is proposed and its usefulness for economic interpretation analysed our approach is illustrated by using us mutual funds data grouped for category by objective economies of scale slacks and market risks are investigated a comparison of traditional nonparametric and robust performance measures is also offered

price reaction of ethically screened stocks a study of the dow jones islamic market world index this paper investigates the short term effects on the price of the ethically screened stocks of the dow jones islamic market world index djimwi quarterly revisions using a sample of 8 250 stocks from may 1999 through june 2012 we find a significant price reaction of the ethically screened stocks following additions and deletions the results show that additions deletions from emerging stock markets tend to experience a greater and significantly positive negative price response than additions deletions from the developed markets further tests reveal that the price reactions following djimwi revisions are likely to be driven by shifts in investor sentiment rather than changes in firm fundamentals

trade deficit announcements intervention and the dollar abstract the effect of u s trade deficit announcements on the dollar exchange rate from 1980 1988 is examined the announcement is found to affect the dollar only after mid 1984 central bank intervention does not appear to have had a consistent impact on the dollar on the day of the announcement

offering versus choice in 401 k plans equity exposure and number of funds records of over half a million participants in more than 600 401 k plans indicate that participants tend to allocate their contributions evenly across the funds they use with the tendency weakening with the number of funds used the number of funds used typically between three and four is not sensitive to the number of funds offered by the plans which ranges from 4 to 59 a participant s propensity to allocate contributions to equity funds is not very sensitive to the fraction of equity funds among offered funds the paper also comments on limitations on inferences from experiments and aggregate level data analysis how much and how to save for retirement is one of the most important financial decisions made by most people defined contribution dc pension plans such as the popular 401 k plans are important instruments of such savings by 2001 year end about 45 million american employees held 401 k plan accounts with a total of 1 75 trillion in assets holden and vanderhei 2001 an important characteristic of these plans is that the participant has responsibility over his savings among a plan s various funds how responsibly do the participants behave in particular how sensitive are participants choices to possible framing effects associated with the menu of choices they are offered to explore these questions this paper analyzes a data set recently provided by the vanguard group consisting of records of more than half a million participants in about 640 dc plans these plans offer between 4 and 59 funds in which participants can invest all plans offer at least one stock fund 635 plans

an alternative conditioning scheme to explain efficiency differentials in banking abstract we investigate whether specialization ownership type or size bias bank efficiency the approach we apply focusing on the entire distributions of efficiency scores sheds light on the firms precise relative positions when controlling for these firms characteristics results suggest that conclusions related to this topic should consider these techniques given efficiency scores generated by nonparametric techniques are clearly dependent on each other in the statistical sense

the structure of expectations of the weekly money supply announcement abstract this paper examines the structure of expectations of the weekly money supply announcement in the late 1970s the data used are from a weekly telephone survey of money market participants the rationality and structure of expectations are explored with the data organized in three ways the mean response to each weekly survey the pooled sample of individual responses and time series of responses by each individual in the survey the effect of data aggregation on rationality tests is investigated the structure of the expectations data are also examined and it is found that both strong regressive influences and adaptive learning characterize the data

multiproduct monopoly commodity bundling and correlation of values through what selling strategy can a multiproduct monopolist maximize his profits when his knowledge about individual consumers preferences is limited one possibility extensively studied in the context of a single good monopoly is to use quantity dependent pricing as a means of discriminating among customers with differing tastes see for example oi 1971 and maskin and riley 1984 an alternative technique for price discrimination first suggested by stigler 1968 and analyzed further by adams and yellen 1976 is for the monopolist to package two or more products in bundles rather than selling them separately through a series of examples adams and yellen illustrate that bundling can serve as a useful price discrimination device even when all consumers willingnesses to pay for each of the goods individually are unaffected by whether they are also consuming the other product a typical example is illustrated in figure i adapted from figure iv in adams and yellen where there are two goods three consumers ab c who consume at most one unit of each good with reservation values for each good that are independent of whether the other good is consumed and zero costs of production there a bundle offered at a price of 100 fully extracts all potential surplus which would be impossible pricing the goods independently unfortunately though these authors do not provide any general characterization of the circumstances in which bundling is actually a multiproduct monopolist s optimal strategy their examples however such as figure i create the impression that the profitable use of bundling

socially responsible investing in the united states socially responsible investing sri has emerged in recent years as a dynamic and quickly growing segment of the u s financial services industry involving over 2 trillion in professionally managed assets its conceptual origins can be found in the early history of civilization with it s modern roots in the 1960s this paper provides an overview of the breadth and depth of the concept and practice of socially and environmentally responsible investing describes the investment strategies that together define sri as currently practiced in the u s offers several observations about some of the factors fueling its dramatic growth and presents data showing that investors who choose to invest in a socially and environmentally responsible manner can do so without giving up investment returns sri has matured to a point where virtually any investment need can be met through portfolio design that integrates an investor s personal values institutional mission and or social priorities the socially responsible investment industry in the unitedstates is a young phenomenon even referring to it as an industry ten years ago may have been a bit of a stretch while it has grown dramatically in recent years it is an area of work of study and of practical application that continues to evolve in many significant ways one intriguing example of the ongoing development of the field can be found in the analysis of the language used to describe it the terms social investing socially responsible investing ethical investing socially aware investing socially conscious investing green investing values based investing and mission based or mission related investing all refer to the same general process and are often used interchangeably

the information content of weekly money supply announcements this paper analyzes the information content of weekly money supply announcements and the use of this information in the market determination of interest rates a short term rational expectations model of the financial market is constructed which incorporates the reaction of the federal reserve to deviations from target money supply and provides a context for analyzing the impact of announcements in the model the federal reserve attempts to maintain target growth rates in the money supply by compensating for past deviations from target announcements which contain an unanticipated movement in the money supply lead the public to expect that the federal reserve will change the rate of growth in the short run to compensate the revision of expectations about future short term money supply leads the public to revise their expectations about short term interest rates the implications of the model are empirically tested using data from a survey of expected changes in the money supply and u s treasury bill data the results support the implications of the model that is weekly money supply announcements do contain new information for the market determination of interest rates and it is only the unanticipated component of the announcement which is important

energy regulation in china objective selection potential assessment and responsibility sharing by partial frontier analysis to cope with the excessive growth of energy consumption the chinese government has been trying to strengthen the energy regulation system by introducing new initiatives that aim at controlling the total amount of energy consumption a partial frontier analysis is performed in this paper to make a comparative assessment of the combinations of possible energy conservation objectives new constraints and regulation strategies according to the characteristics of the coordination of existing regulation structure and the optimality of regulation strategy four scenarios are constructed and regional responsibilities are reasonably divided by fully considering the production technology in the economy the relative importance of output objectives and the total amount controlling is compared and the impacts on the regional economy caused by the changes of regulation strategy are also evaluated for updating regulation policy

price structure in two sided markets evidence from the magazine industry we present and estimate a model of competition in a two sided market the market for magazine readership and advertising using data on magazines in germany we find evidence that magazines have properties of two sided markets the results are consistent with the perception that prices for readers are subsidized and that magazines make all their money from advertisers consistent with advertisers valuing readers more than readers value advertisements our results imply that higher demand on the reader side increases ad rates but that higher demand on the advertising side decreases cover prices

market reactions to u s weekly money supply announcements after the introduction of contemporaneous reserve requirements an empirical note abstract movements across the nominal term structure of u s interest rates have continued to be positively correlated with weekly money surprises post crr bond and foreign exchange market evidence suggests that these may no longer be movements in the real term structure