ceilings on interest rates and investment the example of greece this paper examines the influence of credit conditions on private investment under financial repression in greece three flexible accelerator investment specifications are estimated alternative measures are tried for the dependent and independent variables the reported equations are selected by a simple sequential specialization procedure the empirical results confirm the existence of an important but lagged effect of bank finance on investment this reflects credit rationing due to interest rate controls in the greek banking system various arguments from the financial repression literature are invoked to justify the finding of a positive sign on the user cost variables in the investment equations copyright 1993 by mit press

option bounds with finite revision opportunities this article generalizes the single period linear programming bounds on option prices by allowing for a finite number of revision opportunities it is shown that in an incomplete market the bounds on option prices can be derived using a modified binomial option pricing model tighter bounds are developed under more restrictive assumptions on probabilities and risk aversion for this case the upper bounds are shown to coincide with the upper bounds derived by perrakis while the lower bounds are shown to be tighter in 1984 perrakis and ryan 6 derived upper and lower bounds on european option prices in discrete time and under modest assumptions on preferences and

capital market development in china abstract this paper examines why and how capital markets have developed in a low income socialist country it shows that the development is the response of economic agents operating under a more market oriented economic environment with a highly regulated and inefficient banking system this development has presented new policy challenges and opportunities the paper argues that the developmental effects of the emergence of capital markets in china can be as important as its impact on improving allocative efficiency and resource mobilization

subjective stochastic dominance put writing and stock purchases with extensions to option pricing and portfolio composition initially an investor has the choice of two risky assets writing a european put option or buying the underlying share under broad conditions a risk averse investor will be subjectively better off writing the put when homogeneous expectations are invoked an upper bound for the put premium is obtained a numerical example using the lognormal density function illustrates the broad conditions for risk averters subjectively preferring the put writing strategy additional conditions permit this preference for writing puts to be extended to the portfolio context transactions costs only reinforce this preference in the one period horizon considered

upper and lower bounds of put and call option value stochastic dominance approach applying stochastic dominance rules with borrowing and lending at the risk free interest rate we derive upper and lower values for an option price for all unconstrained utility functions and alternatively for concave utility functions the derivation of these bounds is quite general and fits any kind of stock price distribution as long as it is characterized by a nonnegative beta transaction costs and taxes can be easily incorporated in the model presented here since investors are not required to revise their portfolios continuously the price that is paid for this generalization is that a range of values rather than a unique value is obtained in the last decade there has been an increasing interest in the options market by both academicians and practitioners the most well known valuation models are the black scholes 4 model the jump stochastic process model see cox and ross 6 the binomial model see cox ross and rubinstein 7 rendleman and bartler 19 and sharpe 22 and rubinstein s discrete model 21 recently perrakis and ryan 18 using rubinstein s approach have derived upper and lower bounds for option prices the relative pricing theory of contingent claims differs in the continuous time and discrete time models in a continuous time framework the instantaneous expected rate of return of the option and that of the underlying stock must follow a certain market equilibrium condition in this case the equilibrium condition is easily determined by a continuous hedging strategy in the discrete time case there is no hedging strategy to provide a simple relationship between the option and the stock price however for a given value distribution of the stock the value distribution of the option is uniquely determined by the option exercise price and this suggests some possible relationships between the stock and option values

monopoly rent seeking under conditions of uncertainty in recent years economists have come to recognize that the competition to obtain monopoly rents i e rent seeking may consume resources whose value greatly exceeds that associated with traditionally measured deadweight welfare loss triangles tollison 1982 early articles by tullock 1967 krueger 1974 and posner 1975 all concluded that this competition would exactly dissipate the rents sought later articles by tullock 1980 and baysinger and tollison 1980 modified that original conclusion the present paper develops a model which raises further doubts about the complete transformation of rents into costs the emphasis of the analytical framework presented is on the implications of the fact that rent seekers may typically be uncertain about being able to maintain a monopoly position even if they are initially successful in attaining one it is demonstrated that when there is even a moderate level of uncertainty about retention the likely effect will be a relatively large reduction in the magnitude of resources invested in rent seeking activities in addition it is shown that the size of this waste of resources depends somewhat on the extent to which rent seeking opportunities involve once and for all transfers as opposed to flows of rents finally in those cases where a flow of rents is at stake it is shown that considerable social waste might be eliminated through institutional changes which would reduce the subjective probabilities of potential monopolists retaining their rent streams once attained

omega performance measure and portfolio insurance abstract we analyze the performance of the two main portfolio insurance methods the obpi and cppi strategies using downside risk measures for this purpose we introduce kappa performance measures and especially the omega measure these measures take account of the entire return distribution we show that the cppi method performs better than the obpi as a by product we determine the set of threshold values for these risk reward performance measures

stochastic dominance decision rules when the attributes are utility independent in multivariate decisions under risk assessing the complete utility function can be a major obstacle decision rules are investigated which characterize uniformly better alternatives with respect to a whole class of utility functions in this paper independence assumptions are imposed on the preference structure while the levels of attributes may be stochastically dependent in an arbitrary way the utilities considered are additive multiplicative or multilinear necessary and sufficient conditions are developed for uniform decisions over utilities with common substitutional structure and where the univariate conditional utilities show qualitative properties such as risk aversion the rules are direct extensions of known univariate rules and easy to evaluate

on option pricing bounds the purpose of this article is to compare the perrakis and ryan bounds of option prices in a single period model with option bounds derived using linear programming it is shown that the upper bounds are identical but that the lower bounds are different a comparison of these bounds together with merton s bounds and the black scholes prices in a lognormal securities market is presented the black scholes 1 option pricing model is preference free its simplicity derives from the continuous trading assumption which enables a portfolio of stock and bonds to be constructed so as to replicate the payouts of the option in an incomplete market with only finite opportunities to revise portfolios no preference free option price can be constructed 3 6 for this case preferencedependent prices can be established rather than place restrictive assumptions on preferences perrakis and ryan pr 5 have recently derived upper and lower bounds for a single and multiple period call option price the development of these bounds is based on the single price law and arbitrage arguments and requires modest assumptions on preferences the bounds exist as equilibrium values given a consensus on stock price distributions in this article we shall develop bounds for option prices based on primitive prices in incomplete markets and compare these bounds to the single period bounds derived by perrakis and ryan towards this goal we first review the pricing approach for primitive securities and proceed to re express the pr bounds as derived from their arbitrage portfolios then using linear programming bounds on option prices are derived linear programming approaches for obtaining relationships among option prices have been investigated garman 2 for example established an algebra for evaluating hedge portfolios using this algebra a one period linear program can be established that provides a way to search for arbitrage opportunities over an infinite number of portfolio strategies one of the features of the algebra is that only one linear program need be solved to determine if riskless arbitrage strategies can be established by investigating the dual of the linear program garman obtained necessary and sufficient conditions for rational option pricing in a one period setting these bounds were shown to be consistent with the bounds determined by merton 4 unlike garman s approach the linear programming approach presented here places constraints on time preferences risk aversion and state probabilities under specific sets of assumptions linear programs are formulated where the objective function to be optimized is the call price minimization and maximi

multivariate decisions with unknown price vector abstract we consider a class of decision makers who have to choose among different random bundles of commodities it is assumed that they maximize expected utility and their utility functions depend only on the monetary value of the bundles of commodities stochastic dominance conditions are provided when the price vector is assumed unknown risk aversion and constraints on the price vectors are considered as particular cases the results are compared with other approaches to multivariate decisions

the government financial system and large private enterprises in the economic development of south korea abstract the paper investigates the main characteristics of the government business relationship in south korea in the past three decades to find out how it may have contributed to south korea s economic development it proposes that the government and large private enterprises in south korea should be viewed as constituting an internal organization namely a quasi internal organization as such extensive intervention by the government with south korea s financial system can be viewed as an internal capital market and consequently it could have led to a more efficient allocation of credit than possible in a free market financial system it also argues that the quasi internal organization has made it possible for the government to efficiently implement its developmental policies it is however pointed out that for the quasi internal organization to be successful in accelerating the pace of economic development the country must have a political leadership committed to the goal of economic development and must adopt an outward oriented development policy

the scope and limits of financial liberalisation in developing countries a critical survey this article reviews the growing literature on financial reform in developing countries we draw both on the theoretical contributions outlining the case for and against liberalisation as well as on the experience of many developing countries with liberalisation we argue that the existence of market failures in financial markets hampers the liberalisation process and indeed suggests that the simple liberalising strategy envisaged in much of the literature is inappropriate we argue instead for an alternative strategy which integrates some aspects of liberalisation with the development of appropriate financial institutions designed to serve best the needs of the real economy

assessing the impact of financial liberalisation on stock market volatility in selected developing countries this article argues for the importance of measuring stock market volatility following financial liberalisation in developing countries three alternative indices for measuring volatility are developed these are used to examine the view that financial liberalisation induces increased asset price volatility based on the limited data available this view is corroborated in the majority of countries investigated

refinancing and decentralization evidence from china abstract decentralization can complement market liberalization by strengthening incentives of agents to respond to market signals however in china banks centralized lending authority following financial reforms in the mid 1990s we present a new theory of financial decentralization in which centralization provides a credible commitment not to refinance bad projects by reducing available information using data from chinese rural financial institutions we empirically assess the determinants of decentralization and the likelihood of collateral seizure strongly confirming the predictions of the refinancing model we conclude that weak institutional environments may limit the efficiency of financial intermediation despite financial market liberalization

ranking occupations as risky income prospects this study investigates the problem of how best to measure the income attractiveness of various occupations allowing for the differences among occupations in their stability of income analyzing data for eleven occupations from the one percent public use sample of the 1970 u s census of occupations the authors demonstrate the weaknesses of measures used in previous studies and the advantages of using stochastic dominance analysis

real interest rates and growth improving on some deflating experiences tests of the mckinnon shaw hypothesis typically investigate the relationship between real interest rates and growth recent work has concluded that this relationship may be non monotonic this article investigates the role of real interest rate mismeasurement in explaining these non monotonicities when such mismeasurement is systematically related to growth it will produced biased empirical results after addressing these biases the article demonstrates that financial liberalisation may offer substantial economic gains in an average country raising real interest rates from 25 per cent to five per cent will increase real annual per capita gdp growth from zero to a relatively robust rate of two per cent

day of the week effect in the taiwan foreign exchange market abstract this study uses stochastic dominance with and without risk free assets to examine whether trading days can affect patterns of the day of the week effect in the taiwan foreign exchange market our results generally indicate that higher returns appear on the first three days of the week across different trading day regimes in the taiwan foreign exchange market confirming day of the week effect allocating part of investors assets in risk free assets is useful in distinguishing returns among weekdays for all currencies

the effects of shifts in a return distribution on optimal portfolios when the distribution of the returns of a risky asset undergoes a stochastically dominating shift a risk averse investor may not necessarily increase the investment in that asset this paper provides restrictions on the investor s utility function that are necessary and sufficient for a dominating shift to bring about no decrease in the investment in the respective asset if there are two risky assets in the portfolio these conditions are also necessary if there are n 2 assets and are necessary and sufficient if the utility function exhibits constant absolute risk aversion copyright 1990 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

a stochastic dominance comparison of water conserving irrigation strategies stochastic dominance and stochastic dominance with respect to a function are used to compare water conserving irrigation strategies in an area of declining ground water supplies a computerized grain sorghum plant growth model using daily weather observations provides the basis for stochastic dominance comparisons six irrigation strategies dominate contemporary intensive irrigation practices by first degree stochastic dominance and two additional strategies exhibit second degree stochastic dominance over contemporary practices dominant strategies involve irrigating based on a 45 percent soil water criterion and eliminating early season irrigations some dominant strategies reduce water use by as much as 40 percent while increasing expected net returns

the use of risk and return models for multiattribute decisions with decomposable utilities normatively oriented approaches to decision making under uncertainty occupy a major portion of the literature of decision analysis among the proposed approaches the von neumann morgenstern expected utility eu theory has been the most prominent model of rational choice despite some controversies that surround this model with respect to its descriptive ability as well as the plausibility of utility assessment in actual decision situations 6 10 although most applications of the eu model have been concerned with decisions involving monetary outcomes its scope is not limited to any particular class of conse quences the basic appeal of the model is attributable partly to its generality in this regard and more importantly to the apparent reasonableness of its preferentialaxioms in the context of decisions with monetary outcomes several alternatives to the eu model have been proposed including the mean variance and mean semivariance models that have found popularity in the economies and finance litera ture see 4 8 and 9 in contrast to the eu theory where a decision maker s preferences among uncertain prospects are assumed given preferences in these models are formulated in terms of two attributes that are presumed to character ize all available choices in the mean semivariance model for example uncer tain prospects are viewed entirely in terms of their means and below target semivariances a generalization of this model was examined by fishburn 2 who showed that the general mean risk model exhibits a certain degree of compatibility with the eu model more recently holthausen 5 showed that this compatibility is significantly enhanced when mean is replaced by a return measure de fined as a probability weighted function of above target deviations specifically holthausen proved that this model yields the same preferences as the eu model whenever the expected utility function has the form

an empirical analysis of term premiums using stochastic dominance abstract this paper examines term premiums in u s treasury bill monthly holding period returns several techniques are employed to ascertain whether the observed term premiums are economically meaningful no second order stochastic dominance is found in the first five month maturities when a riskless asset is assumed the first two maturities are dominated therefore we conclude that although there are statistically significant term premiums they are not economically meaningful if there is no riskless borrowing and lending the term premiums are economically meaningful in the sense that the longer maturities dominate the shorter maturities when a riskless asset is available

large and small baseload power plants drivers to define the optimal portfolios despite the growing interest in small medium sized power plants smpp international literature provides only studies related to portfolios of large plants in infinite markets grids with no particular attention given to base load smpp this paper aims to fill this gap investigating the attractiveness of smpp portfolios respect to large power plant portfolios the analysis includes nuclear coal and combined cycle gas turbines ccgt of different plant sizes the mean variance portfolio theory mvp is used to define the best portfolio according to internal rate of return irr and levelised unit electricity cost luec considering the life cycle costs of each power plant carbon tax electricity price and grid dimension the results show how large plants are the best option for large grids while smpp are as competitive as large plants in small grids in fact in order to achieve the highest profitability with the lowest risk it is necessary to build several types of different plants and in case of small grids this is possible only with smpp a further result is the application of the framework to european oecd countries and the united states assessing their portfolios

financial liberalization in africa abstract recent evidence has shown that african economies are financially repressed and the underlying motives for perpetuating repressive policies still exist increasing real deposit rates mainly through lower inflation promotes financial savings investment and growth financial liberalization in africa has recorded limited success owing to a high and unstable inflation rate the high cost of financial intermediation low bank demand for deposits and persistent government interference in credit markets chronically high fiscal deficits and their adverse impacts on the balance of payments also constitute hurdles for financial deepening in africa

stochastic dominance vs mean variance portfolio analysis an empirical evaluation most of the work in portfolio theory in the past decade has been based on the principle of utility maximization where either the investor s utility function is assumed to be a second degree polynomial with a positive first derivative and a negative second derivative or the probability functions are assumed to be normal if at least one of these conditions holds it can be shown that choosing among risky assets on the basis of their mean and variance only is consistent with the von neumann morgenstern utility maximization model thus given the above assumptions the incorporation of higher moments of a distribution and the adoption of alternative approaches to portfolio selection have largely been ignored in favor of the more familiar mean variance approaches

market reaction to quarterly earnings announcements a stochastic dominance based test of market efficiency the use of the capm in empirical research is subject to some criticism in light of this criticism the stochastic dominance criteria are offered as an alternative research method for the examination of market efficiency the underlying assumptions of the two frameworks are discussed and the stochastic dominance technique is demonstrated via the examination of market reaction to quarterly earnings announcements during the 24 quarters commencing with october 1962 the findings are compared to those of watts watts r the time series behavior of quarterly earnings unpublished paper university of newcastle newcastle n s w 1975 quoted in watts 1978 who utilized the same data base in contrast to watts conclusion our analysis suggests that the market was efficient during the entire period examined and that no significant differences in market behavior between the first and the second 12 month periods was evident the discord may be attributed to the relative effectiveness of the two analytical tool

financial system development in transition economies this paper provides an overview of the major issues with respect to financial system development in transition economies which were discussed at a conference in groningen the netherlands december 1997 after a brief remark on the role of financial system design during economic transition the paper focuses on the role of stock markets in the process of financial intermediation with emphasis on the role of regulations in these markets the role of deposit insurance to improve bank system stability and the importance of an independent central bank measurement issues relating to central bank independence and its impact on inflation and growth 2000 elsevier science b v all rights reserved

stochastic dominance and uncertain price prospects since the seminal and simultaneous publications of hadar and russell 6 and hanoch and levy 8 there has been a virtual explosion of papers investigating implications of stochastic dominance rules for decisions under uncertainty dominance principles have important applications to portfolio choice capital budgeting and financial intermediation stochastic dominance can also be applied to investment and production decision problems under uncertainty in these areas both overall and marginal impacts of uncertainty have received wide attention 2 the emphasis in consumer welfare analysis under uncertainty has been on the ranking of different price prospects ranking of price prospects is more complicated than that of income prospects for two related reasons first due to differences in ordinal preferences among consumers the second degree stochastic dominance rule on price prospects does not yield a unanimous ranking among risk averse consumers thus waugh 17 massell 12 and samuelson 14 have focused on the ranking of price prospects for a single consumer or consumers with identical ordinal preferences second there is no a priori reason for income risk averse consumers to exhibit aversion to fair price risks specifically the indirect utility function of an income risk averse consumer is neither concave nor convex in prices indirect ways of comparing consumer welfare under alternative price prospects via expected consumer surplus expected compensating variation or expected equivalent variation have thus been investigated in the literature expected consumer surplus ecs has been particularly popular for ranking certain and uncertain price prospects 3 however turnovsky shalit and schmitz 16 showed that the ranking

foundations of decision analysis along the way this paper offers a personal perspective on the development of decision theory and related subjects during the past half century it first reviews six milestones in the foundations of decision analysis that are associated with frank p ramsey john von neumann and oskar morgenstern leonard j savage maurice allais and ward edwards west churchman and russell ackoff and kenneth arrow it then gives a personal account of further developments over the past 30 years in linear utility theory subjective probability and ambiguity nonlinear preference and utility stochastic dominance and inequality analysis multiattribute utility theory and the theory of social choice the paper could be viewed as a supplement to my extensive review of utility theory in management science some 20 years ago however it makes no claim of completeness since its main aim is to recall important debts and describe what it has been like to be a part of the development of decision analysis in the past few decades

option bounds in discrete time extensions and the pricing of the american put in a recent paper perrakis and ryan 1984 upper and lower bounds on european option prices were derived in discrete time these bounds were based on an extension of the discrete time derivation of black scholes pricing first presented in the work of black and scholes 1973 the bounds are functions of the stock and exercise prices the riskless rate of interest the time to maturity and the entire distribution of stock returns in other words they need more information than black scholes for their computation and the derived results are weaker on the other hand they are significantly more general in their assumptions insofar as they do not rely on the continuous time riskless hedge of the original black scholes derivations or on the assumption of a binomial distribution of stock returns used in cox ross and rubinstein 1979 and rendleman and bartter 1979 for this reason they are likely to be particularly useful in valuing options on assets for which the black scholes methodology is clearly this paper generalizes and tightens the discrete time bounds for european options and develops similar bounds for american puts the stock return has a distribution with a finite range and is subject to the restriction that the stock be nonnegative beta the bounds are derived from arbitrage portfolios using the stock the option and the riskless asset they converge to the previous ones when the range coincides with the nonnegative real line and they both become equal to the binomial option model under a two state stock return upper and lower bounds for the american put are derived recursively by the same method with arbitrage portfolios involving the stock the riskless asset and american and european puts an example is provided with a trinomial return distribution part of this research was done while i was a visiting professor 1983 84 ecole superieure de commerce et d administration des entreprises reims france i wish to thank peter ryan albert madansky and a referee of this journal for helpful advice and comment while retaining all responsibility for any remaining errors or omissions 1 note however that this is also true of other blackscholes generalizations such as merton 1976

mckinnon shaw versus the neostructuralists on financial liberalization a conceptual note abstract the views of the mckinnon shaw group and the neostructuralists differ about the approach to financial liberalization not about financial liberalization itself the neostructuralists view as it is normally interpreted is misleading in that it recommends that developing countries maintain low interest rates in the banking sector a practical way for developing countries to pursue financial liberalization would be through the organized financial system

ordering uncertain options under inflation a note stochastic dominance rules sd have been extended to the case where investors are allowed to borrow and lend at the riskless interest rate stochastic dominance rules with a riskless asset sdr are much more effective than sd rules however it seems that this benefit is eliminated by an uncertain inflation since riskless assets become risky once uncertain inflation is considered we prove in this paper that sdr criteria are valid also in the face of uncertain and independent inflation moreover while the mean variance mv efficient set increases with uncertain inflation the stochastic dominance efficient sets decrease stochastic dominance criteria sd for ordering risky assets were developed mainly in the late sixties following the development of the mean variance rule mv and the capital asset pricing model capm by analogy to the extension of sharpe and lintner of the mv criterion levy and kroll 10 have extended the sd rules by allowing borrowing and lending at the riskless interest rate this extension sharply decreases the size of the efficient set and in some cases an empirical separation is obtained or almost a separation where the efficient set of risky assets includes only one or two risky portfolios see levy and kroll 11 note however that these important economic results rely on the assumption that a riskless asset indeed exists an assumption which cannot be defended in a period of uncertain inflation chen and boness 2 roll 17 and friend et al 5 investigate the impact of inflation on the capm chen and boness assume a quadratic utility function and also make the assumption that the real rate of return is given by the nominal rate of return less the inflation hence ignoring the cross product of inflation and rates of return which greatly simplifies the mathematical analysis roll also assumes a quadratic utility function and further makes the assumption that a riskless asset in real terms exists friend et al assume that returns are generated by a wiener process the investment horizon is infinitesimal and that investors are characterized by constant proportional risk aversion under these assumptions they derive a formula which is analogous to the capm where inflation a random variable is incorporated in the formula it should be noted that by an infinitesimal investment horizon they do away with the cross product of inflation and the rates of return which is equal to zero in this specific case the relationship between the inflation rate and stock prices has been a subject

financial liberalisation stockmarkets and economic development abstract during the 1980s and 1990s many developing countries dcs have been engaged in far reaching reforms of their financial systems liberalising them and making them more market oriented this liberalisation involving inter alia financial de repression has been inspired partly by the work of the mckinnon 1973 and shaw 1973 m s school this paper suggests that in addition to financial de repression there has been a major new element in the development of dc financial systems in recent years the establishment and fast expansion of stockmarkets these markets have played a key role in the internal as well as external financial liberalisation processes in leading dcs further the paper finds that the actual behaviour of these markets in many countries has led to outcomes which undermine the effects of the higher real interest rates arising from financial de repression

unorganized money markets and unproductive assets in the new structuralist critique of financial liberalization abstract the new structuralists critique of financial liberalization emphasizes the role of informal credit markets in financing firms residual credit demand in ldcs and the relevance of households portfolio substitution patterns the sensitivity of their policy conclusions is demonstrated in the context of a representative model developed by van wijnbergen the relative efficiency of intermediation in the formal and informal credit markets crucially affects the outcome of the portfolio allocation effects generated by higher bank deposit rates an anomaly in the characterization of unproductive assets in defining credit supply is also examined

public sector banking efficiency and economic growth in india abstract this paper develops a framework that integrates harrod domar growth model and mckinnon shaw hypothesis via molho s dynamic adjustment mechanism the model is used to determine the impact of bank nationalization through aggressive bank branch expansion programs and priority sector credit allocation on india s financial savings investment productivity and gdp the empirical findings indicate that the bank nationalization policy has been a mixed blessing the aggressive bank branch program since 1969 resulted in an increased in savings investment productivity of capital and gdp however the priority sector credit allocation policy did not fully achieve its desired goals

rent seeking noncompensated transfers and laws of succession my purpose in this paper is to analyze inefficiencies that may emerge from the noncompensated transfer of valued rights among persons this source of inefficiency has not to my knowledge been fully incorporated either in the economic theory of property rights or in orthodox tax analysis my discussion is based on the elementary fact that all noncompensated transfers are rents to the recipients implications for the emergence of rent seeking behavior follow straightforwardly the now familiar propositions to the effect that rent seeking may dissipate economic value can be applied to a variety of transfer settings only a few of which are explored in this paper 1 to the extent that the efficiency criterion is the relevant norm direct implications may be drawn for policy with respect to the laws or rules for succession

directed credit and investment in small scale industry in india evidence from firm level data 1965 78 panel data on 788 modern sector indian firms during 1965 78 are used to analyse the link between the size of a firm and its financial environment exogeneity tests reveal that large firms with improved investment prospects could obtain external finance at the margin but that small firms could not the policy of directing bank credit accordingly relaxed a binding constraint on small firms raising investment assuming that all of the rise in the credit sales ratio in small firms was policy induced then so was about one third of the 170 per cent rise during 1965 78 in their investment sales ratio

international overborrowing a decomposition of credit and currency risks summary the severity of the financial crises enveloping the tiger economies of southeast asia in 1997 came as a surprise to many observers this paper uses a simple fisherian model of the overborrowing syndrome to compare the asian crises of 1997 with earlier overborrowing episodes in mexico and chile while important similarities exist the crises in southeast asia have been exacerbated by the unhedged foreign exchange positions of asian banks these open currency positions not only imposed significant additional losses on the banks following devaluation they also magnified the scale of overborrowing during the cycle s initial boom phase failure to limit the exposure of banks to foreign exchange risk therefore increased the magnitude of the boom bust overborrowing cycle both ex ante and ex post the paper highlights the importance of effective regulation and supervision of capital markets with a focus on limiting the speculative currency positions of banks especially those that form the core of the domestic payments system and therefore enjoy a possibly implicit public guarantee improving the institutional infrastructure of financial supervision is the only effective way of mitigating the macroeconomic costs of overborrowing

distributional analysis of portfolio choice trading in a market is compared with receiving some particular consu mption bundle given increasing state independent preferences and complete markets the analysis focuses on the distribution price of t he particular bundle the distributional price is the price of the ch eapest utility equivalent bundle sold in the market the distribution al price is determined by the distribution functions of the outside b undle and the state price density simple portfolio performance measu res illustrate the value of the approach unlike capm based measures these measures are valid even when superior information is the sourc e of superior performance copyright 1988 by the university of chicago

mean gini portfolio theory and the pricing of risky assets this paper presents the mean gini mg approach to analyze risky prospects and construct optimum portfolios the proposed method has the simplicity of a mean variance model and the main features of stochastic dominance efficiency since mean gini is consistent with investor behavior under uncertainty for a wide class of probability distributions gini s mean difference is shown to be more adequate than the variance for evaluating the variability of a prospect the mg approach is then applied to capital markets and the security valuation theorem is derived as a general relationship between average return and risk this is further extended to include a degree of risk aversion that can be estimated from capital market data the analysis is concluded with the concentration ratio to allow for the classification of different securities with respect to their relative riskiness

geometric mean approximations in 1959 henry latana 2 proposed an approximation to the geometric mean that was a simple function of the arithmetic mean and variance thereby indicating a mathematical relationship between the risky investment choice model of bernoulli and the markowitz mean variance model in 1969 young and trent 4 presented empirical test results of the latane approximation as well as a set of other approximations to the geometric mean based on moments and concluded that the latane formula yielded a quite accurate approximation to the geometric mean in jean s 1980 paper 1 relating the geometric mean model to stochastic dominance models the infinite series representation of the geometric mean used suggests a more accurate approximation with moments of the geometric mean than that contained in the earlier papers may be possible various forms of that series expressed in alternate origin moments are tested empirically below and the results confirm that this later series does yield the greatest accuracy of the three approaches

multivariate decision making abstract consider a set of multivariate risky options a partial ordering of these options is quite difficult and even for the two dimensional case a knowledge of the cross derivatives of the decision maker s utility function is required in this paper we establish first degree multivariate stochastic dominance by applying the concepts of the indirect utility function and the indirect probability distribution thus we reduce the complex multivariate risky option into a univariate risky option where the random variable is the derived indirect income the second degree stochastic dominance rule is also derived under certain restrictions on the utility function

agency theory and stochastic dominance recently agency theory has become popular as a means of explaining the structure of contracts between various classes of economic agents oftentimes the contracts of interest represent sharing rules for the payoffs that result from some production activity in the usual two party model of the contracting problem one party designated the principal delegates authority for decisions affecting production to another party designated the agent typically the assumptions made about the consequences of the agent s actions are that they are associated with effort on the part of the agent for which the agent but not the principal has disutility and that greater effort will result in higher payoffs from production in every state of nature moral hazard is then introduced by assuming that the principal is unable to observe the agent s effort or to infer what effort the agent applied through an ex post observation of the payoff that results

the relationship between arbitrage and first order stochastic dominance this paper joins together two fields of research in financial economics the first field studies stochastic dominance while the second field studies arbitrage pricing the two fields are linked together through the derivation and the proof of a characterization theorem the characterization theorem gives necessary and sufficient conditions for the existence of arbitrage opportunities in terms of the existence of two assets one of which first order stochastically dominates the other and the price of a particular contingent claim examples are provided to demonstrate the theorem s content this paper joins together two fields of research in financial economics the first field studies portfolio choice from the perspective of stochastic dominance see hadar and russell 5 6 hanoch and levy 7 levy and kroll 13 the second field studies arbitrage pricing its characterization and implications see ross 15 kreps 12 harrison and kreps 8 harrison and pliska 9 in these fields it is well known that the existence of arbitrage opportunities implies first order stochastic dominance and that the converse does not hold this paper provides a set of conditions under which the converse is true given complete markets the existence of an arbitrage opportunity is characterized in terms of the existence of two traded assets one of which stochastically dominates the other along with one additional condition the additional condition is roughly that state contingent prices must be zero over the states where the first asset dominates the second the theorem has a qualification however it is applicable only in markets which are complete not in the arrow debreu sense but in a weaker sense in the sense that all contingent claims on the primary assets must trade in many applications especially with respect to continuous trading models this condition is usually satisfied see duffie 2 and harrison and pliska 9 in the case of stochastically dominated assets this paper shows that the relationship of the assets to the state contingent prices is important in identifying arbitrage opportunities in this sense this paper is related to a recent paper of jagannathan 10 jagannathan studies the relationship of second order stochastic dominance not first order to call option valuation this characterization theorem relating arbitrage opportunities to stochastic dominance should provide a valuable tool in the area of stochastic dominance this theorem specifies conditions under which two assets can be compared using first order stochastic dominance on an individual basis for inclusion in the

option pricing bounds in discrete time upper and lower bounds are derived for call options traded at discrete intervals these bounds are independent of assumptions on the stock price distribution other than a restriction satisfied by the stock being non negative beta the development of the bounds relies on the single price law and arbitrage arguments both single period and multiperiod results are produced and put option bounds follow by extension the bounds exist as equilibrium values given a consensus on stock price distribution they are also valid for empirical studies being adjustable for dividends and commissions following the impetus of the black scholes pricing model the majority of option analyses have been in continuous time such approaches have relied on the formation of perfect riskless hedges involving the option its underlying security and a riskless asset since the hedge must be continuously revised and maintained while actual trading opportunities are discrete this crucial assumption limits the accuracy and applicability of the black scholes and related formulae in fact the black scholes formula can only be considered as a valid approximation to the discrete time solution merton 8 p 663 while the closeness of that approximation has not been ascertained in general 1 earlier discrete models such as boness 3 and samuelson 12 have been succeeded by those of brennan 5 cox et al 6 and rubinstein 11 in which distributional restrictions are imposed on share returns usually the discrete formula converges to the black scholes expression under appropriate limit conditions using the rubinstein 11 approach we derive upper and lower bounds for option prices with both a general price distribution and discrete trading opportunities the bounds are functions of the share and exercise prices the riskless rate of interest the distribution of the share price change per period and the number of periods of expiration of the option the lower bound is tighter than that of merton 7 derived from more general arbitrage considerations while being less exact than the results already mentioned for restricted distributions

third degree stochastic dominance here f x and g x are less than cumulative probability distributionis where x is a continuous or discrete random variable representing the outcome of a prospect the closed interval a b is the sample space of both prospects the integral shown in rule 2 and those shown throughout the paper are stieltjes integrals recall that the stieltjes integral fb f x dg x exists if one of the functions f and g is continuous and the other has finite variation in a b let d1 d2 and d3 be three sets of utility functions x d1 is the set containing all utility functions with 4 x and 1 x continuous and 41 x 0 for all xe a b d2 is the set with x 1 x 2 x continuous and q j x 0 02 x o for all xc a b d3 is the set with x 1 x 2 x 3 x continuous and 1 x 04 2 x o o for all xc a b here 1 x denotes the ith derivative of x hadar and russell proved that rule 1 is valid for all cd1 and rutle 2 is valid for all ed2 the authors point out that the set of probability distributions that can be ordered by means of second degree stochastic dominance is in general larger than that which can be ordered by means of first degree stochastic dominance note that in rule 2 they assume that x is not only an increasing function of x but also exhibits weak global risk aversion a condition guaranteed by requiring the second derivative of x to be nonpositive in this paper a condition which will be called third degree stochastic dominance is considered it is based on the following assumption about the form of the utility function x from a normative point of view one expects the risk premium associated with an uncertain prospect to become smaller the greater is the individual s wealth the plausibility and implications of this assumption h ave been explored by john pratt as well as others the risk premium of an uncertain prospect is that amount by which the certainty equivalent of the prospect differs from its expected value in mathematical terms given the prospect f x with expected value a the corresponding risk premium t is obtained by solving the following equation rb

stochastic dominance and expected utility survey and analysis while stochastic dominance has been employed in various forms as early as 1932 it has only been since 1969 1970 that the notion has been developed and extensively employed in the area of economics finance agriculture statistics marketing and operations research in this survey the first second and third order stochastic dominance rules are discussed with an emphasis on the development in the area since the 1980s

incorporating asymmetric distributional information in robust value at risk optimization value at risk var is one of the most widely accepted risk measures in the financial and insurance industries yet efficient optimization of var remains a very difficult problem we propose a computationally tractable approximation method for minimizing the var of a portfolio based on robust optimization techniques the method results in the optimization of a modified var measure asymmetry robust var arvar that takes into consideration asymmetries in the distributions of returns and is coherent which makes it desirable from a financial theory perspective we show that arvar approximates the conditional var of the portfolio as well numerical experiments with simulated and real market data indicate that the proposed approach results in lower realized portfolio var better efficient frontier and lower maximum realized portfolio loss than alternative approaches for quantile based portfolio risk minimization

on stochastic dominance and decreasing absolute risk averse option pricing bounds merton perrakis and ryan levy and ritchken have established option pricing bounds under first and second stochastic dominance preferences these bounds are particularly important for valuing contingent claims when continuous trading in the claim and or underlying security does not exist this article provides option bounds under higher orders of dominance specifically option bounds are obtained by solving mathematical programs where preference structures on prices are represented by constraints for first second third and higher orders of stochastic dominance preferences the special linear structure of the mathematical programs allow analytical solutions to be obtained for the bounds for dara preferences third order stochastic dominance while being necessary is not sufficient and additional constraints must be imposed unfortunately these additional constraints are nonlinear while in this case closed form analytical solutions for the option bounds are not obtained numerical examples are presented to illustrate their strength

when are stable rights to rents bad stable enforceable property rights over resources normally furthers economic efficiency i argue that stable rights to government created rents and wealth transfers by contrast generate inefficiency secure rights to receive transfers increases rent seekers incentive to make political investments creating new transfers i demonstrate the point using a two period rent seeking game contestable transfers reduce the probability of establishing a transfer program and aggregate rent seeking expenditures strengthening transfer recipients rights increases the difficulty of eliminating a transfer program

comparison of alternative utility functions in portfolio selection problems this paper examines the effect of alternative utility functions and parameter values on the optimal composition of a risky investment portfolio normally distributed assets are the setting for the theoretical and empirical analyses the results agree well with the available theory and imply utility functions and parameter values that are appropriate for investors with particular risk bearing attitudes the results give strong empirical support to the proposition that utility functions having different functional forms and parameter values but similar absolute risk aversion indices have similar optimal portfolios these results suggest that over horizons up to one year one can safely substitute convenient surrogate utility functions for other utility functions for reasons of tractability or otherwise the results also provide guidance regarding the significance of the magnitude and change of particular numerical values of the risk aversion index moreover theoretical exact results are obtained using rubinstein s measure of global risk aversion

some results on bond yield and default probability fisher 5 suggested that the difference between a corporate bond s promised yield tomaturity ytm and the ytm of a government bond of the same maturity is composed of the sum of the corporate default risk the variability of the firm s earnings the firm s reliability in meeting its obligations its capital structure and the bond s marketability since then fisher s measure has often been used to measure bond risk for example fraser and mccormack 6 have used the spreads between newly issued bank bonds and aaa bonds of compatible maturities as substitutes for riskless government bonds to measure the changes in banks borrowing risk after two large bank failures in their paper spread is intended to provide for intra firm industry default risk comparisons over time radcliffe 15 uses yield spreads to differentiate the riskiness among corporate bonds in this case the spread is used for inter firm risk comparisons sharpe 18 has suggested a similar measure of bond default risk which is the ytm less the expected rate of return however most of these papers do not provide a bond pricing model which would furnish the link between a firm s riskiness and the ytm and default risk of its bond without this it is difficult to draw inferences between ytm s and default risk

choice under uncertainty problems solved and unsolved ffifteen years ago the theory of choice under uncertainty could be considered one of the success stories of economic analysis it rested on solid axiomatic foundations it had seen important breakthroughs in the analytics of risk risk aversion and their applications to economic issues and it stood ready to provide the theoretical underpinnings for the newly emerging information revolution in economics 1 today choice under uncertainty is a field in flux the standard theory is being challenged on several grounds from both within and outside economics the nature of these challenges and of our profession s responses to them is the topic of this paper

stochastic dominance and the investment horizon with riskless assets this paper analyses the relationship between the efficient sets of investment portfolios and the investment holding period investors are allowed to hold risky assets as well as the riskless asset the main result is that dominance in each period implies dominance in the multiperiod case this finding holds with respect to first second and third degree stochastic dominance the riskless interest rate may vary from one period to another without changing the results of this paper

demand for risky financial assets a portfolio analysis abstract demand for risky financial assets takes place in portfolio settings the common stochastic orders applied in economics fail to rank demand for assets in such situations even for risk averse investors therefore the evaluation of the relative desirability of risky financial assets requires the establishment of new orders we prove that if returns on risky assets are ordered by the monotone likelihood ratio order then dominating assets will be more desired by all investors with nondecreasing utility functions

inefficiencies from financial liberalization in the absence of well functioning equity markets since the seminal works by mckinnon 1973 and shaw 1973 there has been active research into the working of financially repressed economies and the beneficial effects of elnancial liberalization see fry 1982 for a survey of literature they claim that liberalization of the elnancial sector from interest rate ceilings and other restrictions facilitates economic development and growth because higher interest rates lead to both increased savings and greater efficiency of capital allocation today the idea that financial activity should not be repressed has become the new orthodoxy in academia as well as in the major international institutions that provide policy guidelines for developing countries the elnancial liberalization argument however is incomplete the literature on emancial liberalization has emphasized eliminating interest rate ceilings and fostering free competition among banks it has largely overlooked the possibility that endogenous constraints in the credit market such as imperfect information could be signielcant barriers to efelcient credit allocation even when banks are freed from interest rate ceilings nor has the literature dealt with market structure e g the oligopolistic and cartelized banking systems found in most locs the literature has emphasized the role of the banking sector which is correctly perceived as the only organized capital market in most developing countries it has neglected the potential

financial market liberalisation in ldcs the incidence of risk allocation effects of interest rate increases high deposit interest rates are central to the financial liberalisation argument the article investigates the relatively neglected issue of who must pay two issues are stressed if loan charges increase the incidence falls on typically highly geared businesses and overall financial saving may not rise as claimed second although loan charges need not increase and enhanced credit availability may compensate borrowers if they do the financial risks of banks increase these risks are pertinent to monetary policy and may force actions contrary to the liberalisation approach institutional developments to foster the supply of risk bearing capital are emphasised in conclusion

mean lower partial moment valuation and lognormally distributed returns in this paper we develop a capital asset pricing model in a mean lower partial moment framework specifically we show that when partial moments are computed about the expected risky portfolio return optimal portfolio choice in a mean lower partial framework permits a two fund portfolio separation between a riskless asset and a market portfolio of risky assets in this new framework risk is measured as semideviation for second degree stochastic dominance and semivariance for third degree stochastic dominance further when security returns are lognormally distributed and small risk this new mean lower partial moment valuation specializes to the mean logarithmic variance capital asset pricing model

a note on almost stochastic dominance abstract both the expected utility maximization and the hierarchy property are very important properties in stochastic dominance for almost stochastic dominance leshno and levy 2002 propose a definition and tzeng et al 2013 modified it to give another definition this note provides more information on the two definitions the former has the hierarchy property but not the expected utility maximization whereas the latter has the expected utility maximization but not the hierarchy property

stochastic dominance and expected utility while stochastic dominance has been employed in various forms as early as 1932 it has only been since 1969 1970 that the notion has been developed and extensively employed in the area of economics

data envelopment analysis models of investment funds abstract this paper develops theory missing in the sizable literature that uses data envelopment analysis to construct return risk ratios for investment funds it explores the production possibility set of the investment funds to identify an appropriate form of returns to scale it discusses what risk and return measures can justifiably be combined and how to deal with negative risks and identifies suitable sets of measures it identifies the problems of failing to deal with diversification and develops an iterative approximation procedure to deal with it it identifies relationships between diversification coherent measures of risk and stochastic dominance it shows how the iterative procedure makes a practical difference using monthly returns of 30 hedge funds over the same time period it discusses possible shortcomings of the procedure and offers directions for future research

stochastic dominance analysis without the independence axiom we characterize the consistency of a large class of nonexpected utility preferences including mean variance preferences and prospect theory preferences with stochastic orders for example stochastic dominances of different degrees our characterization rests on a novel decision theoretic result that provides a behavioral interpretation of the set of all derivatives of the functional representing the decision maker s preferences as an illustration we consider in some detail prospect theory and choice acclimating preferences two popular models of reference dependence under risk and we show the incompatibility of loss aversion with prudence this paper was accepted by james smith decision analysis

transfer principles in income redistribution abstract dalton s principle of transfer for income redistribution says that society will be better off when a unit of income in transferred from a richer to a poorer individual this paper investigates the conjunction of a natural extension of dalton s principle which says that any combination of a socially desirable transfer with its inverse at uniformly higher levels of income will have positive social benefit and a traditional utilitarian egalitarian formulation of social welfare the transfer principles involved in the extension of dalton s rule correspond to stochastic dominance relations between income distributions with a common mean and lead to the conclusion that when and g are income distributions the social welfare of is larger than that of g if e ax x ax g x for all positive a this conclusion is intimately connected with a measure of income inequality studied by kolm

enterprise ownership constraints and the role of equity markets in financial development the long standing controversy of the contribution of equity markets to economic development has been reactivated by the emerging markets phenomenon positive reassessments have emphasised diversification and liquidity gains for investors funding risky long lived projects the present analysis adopts instead the viewpoint of the issuer the owner controlled enterprise typical of ldcs owners wealth is a fundamental constraint on expansion when gearing is limited by bankruptcy risk and minority equity issue eases this constraint it is suggested that equity and debt are thus complementary and that stock markets may improve overall allocative efficiency if equities correctly value firm prospects

asset proportions in optimal portfolios the paper is concerned with conditions under which the proportion of a given asset in the optimal portfolio of a risk averse agent is at least as large as some given proportion the paper provides a condition that is necessary and sufficient for such a result to hold the analysis is then confined to portfolios in which the distributions of assets differ by either a first degree stochastic dominance shift or by a mean preserving shift examples are provided to show that under some conditions a risk averter may invest a smaller proportion of his wealth in the dominating asset than in the dominated asset the paper then provides conditions that are necessary and sufficient for a risk averter to invest more in the dominating asset the question of whether risk averse agents should or should not choose diversified portfolios as opposed to specialized ones has been analysed quite extensively in the literature examples of such works are samuelson 1967 brumelle 1974 hadar and russell 1974 russell and seo 1979 hadar and seo 1980 and macminn 1984 what has not been examined at all except for very special cases is the question of the optimal proportions of the various assets in a diversified portfolio in this paper we present conditions which imply that the optimal amount invested in a particular asset is at least as large as some given proportion of the available fund in the case of two asset portfolios one may especially want to know which of the two assets represents more than half the investible fund indeed we find it convenient to start the analysis with the two asset case while the extension to n asset protfolios is essentially straightfoward it is presented in a subsequent section focusing first on the two asset case will make it easier for the reader to see the main logical steps in the proofs of the theorems some of our analysis is facilitated by the use of a particular subset of risk averters this subset has the property that if its members behave in a particular way then all risk averters behave in that way we refer to such a subset as a representative set of all risk averters 2 the usefulness of the representative set derives from the fact that its members have utility functions of a very simple form consisting of two linear pieces and its applicability to the problems on hand derives from the fact that any concave function can be approximated by a linear combination of members of the representative set in the next section we present some formal results demonstrating the equivalence of unanimity among members of the representative set and unanimity among all risk averters in certain types of choice situations these theorems are then used in section 3 in which we present the results about optimal asset proportions

credit and equity rationing in markets with adverse selection previous theories of financial market rationing focussed on a single market either the credit or the equity market an interesting question is whether credit and equity rationing are mutually compatible and how they interact we consider a model with two dimensional asymmetric information where entrepreneurs have private information about both the expected returns and the risk of their projects we show that credit and equity rationing may occur individually or simultaneously moreover competition between the two markets may generate the adverse selection that leads to rationing outcomes

constitutional prohibitions in a rent seeking model i extend the standard rent seeking model to allow lobbying fora constitutional prohibition on wealth transfers i examinetwo issues 1 the ability of special interests withsignificant political capacity to block constitutional change and 2 the effect of adding a constitutional stage on totallobbying expenditures defeating a prohibition on wealthtransfers is a public good for rent seekers success inconstitutional politics merely allows them to lobby for wealthtransfers the resulting collective action problem for rentseekers in constitutional politics offsets the generalinterest s free rider problems reducing the probability oftransfers and expected total lobbying expenditures compared tothe traditional rent seeking contest introduction of aconstitutional stage also reverses several comparative staticsresults from the rent seeking game an increase in the numberof rent seekers or the general interest s consumers abilityto organize increase lobbying in the rent seeking game butgenerally reduce expected lobbying in the constitutionalprohibition game

stock markets in africa emerging lions or white elephants abstract the number of stock markets in african countries has doubled over the last 7 years although these markets remain small and illiquid they are growing rapidly and will become an increasingly important part of many african economies using examples taken from experience in other developing regions and africa s recent past this paper evaluates the common economic criticisms of stock markets and the political pitfalls involved in their operation it concludes that the positive economic effects of bourses on african economies are far larger than any negative effects and argues that the political costs can be mitigated while political benefits can also be gained it finishes by suggesting reforms that can be put in place to reap more benefits and further reduce costs from stock markets on the continent

real interest rates and macroeconomic activity while standard discussions of the transmission mechanism of monetary policy tend to assume a strong and negative link between real interest rates and real macroeconomic activity and this appears to some extent to be borne out by simulation of large scale macroeconometric models the empirical evidence suggests that the link between real interest rates and macroeconomic aggregates such as consumption and investment is in fact somewhat tenuous the weak link between interest rates and aggregate consumption may be explained at a theoretical level while the apparently weak link between interest rates and investment is more puzzling although it may be related to neglect of issues such as uncertainty and the irreversibility of investment in empirical studies similarly evidence on the link between real interest rates and economic growth is mixed and this may be related to non linearities in the relationship the survey highlights the need for further research in this area

an empirical comparison of stochastic dominance among lognormal prospects l introduct ion the theory of portfolio selection and diversification developed by markowitz 22 and tobin 33 was based primarily on the criterion of meanvariance mv efficiency the objective was to select an efficient set of portfolios from which every risk averter will choose the optimal portfolio which maximizes his expected utility the mv criterion is the appropriate rule either for the case in which the utility function is quadratic or if the returns are normally distributed and risk aversion is assumed two approaches to the choice among risky alternatives that have been developed independently over the past two decades are the geometric mean criterion gm and the stochastic dominance sd decision model both can be justified by the expected utility hypothesis with the geometric mean cri terion following as a result of the assumption that the decision maker has a logarithmic utility function and the stochastic dominance models requiring the less restrictive assumption of signs of the first few derivatives of the decision maker s utility function this paper compares the concept of ordinary stochastic dominance to stochastic dominance of the lognormally distributed prospects from an empirical point of view further 1ight is also shed on the issue of applying the markowitz tobin mean variance rule