investor preference for large firms new evidence on economies of size in the last several decades industrial organization literature has been replete with studies demonstrating a systematic relationship between accounting rates of return and firm size in the direction of greater and more stable accounting profits for larger firms these studies have been subject to criticism for an alarming number of statistical and conceptual problems the most important of which alleges a serious bias in accounting profit measures as proxies for economic profit 2 the criticisms have resulted in a stalemate in the interpretation of empirical evidence on firm size and performance nevertheless there is continued interest in the area ostensibly resulting from policy concerns with large firm advantages in both product and capital markets this paper provides new evidence concerning the industrial organization literature controversy of the connection between firm size and performance stock market data are used to examine the relationship between capital market returns risk and firm size the findings suggest that even if there were no advantages of large size in the product market equal rates of operating profit large firms would still have a substantial capital raising advantage over small firms this advantage is unrelated to the widely recognized floatation cost economies even after controlling for nondiversifiable risk using the capital asset pricing model capm investors still demonstrate a statistically significant and economically important preference for the securities of larger firms investors apparently place a premium on large firms which is not attributable to large firms observed lower risk as captured by the widely used measure of nondiversifiable risk beta risk this finding a fresh contribution to the

small firms and the merger mania empirical research has found an average or even superior performance of small firms this seems to be at variance with the secular concentration process and the recurrent merger waves this paper tries to integrate size and merger research higher profitability of small firms is explained by their incentive structure and shorter decision lags but also by lower wages and higher individual risk premia their faster growth in the eighties was in addition fostered by diversification of demand miniaturization of technology and a need for flexibility under uncertainty the merger wave on the other hand does not necessarily prove that large firms are superior managers and shareholders may be seduced by stockmarket optimism a sizeable industry of banks agents and lawyers have their own interests in mergers mergers may be important in declining markets and for the acquisition of technology on average mergers do not improve efficiency profits or internal growth small and large firms serve different purposes performance depends on the market incentives and technology the establishment growth and closure of small firms as well as mergers are attempts to find the optimal organization for utility maximization in a world of severe uncertainty and diverse needs

informal firms in developing countries entrepreneurial stepping stone or consolation prize the potential dynamic benefits of a firm having the option to adopt informal status are analysed informality may be a stepping stone without which formality may never be achieved this result is obtained for a broad range of realistic parameter values suggesting a potential dynamic case for government support of informal firms informality may alternatively play a converse role as a consolation prize with a firm only entering an industry formally because it recognizes that if profitability is disappointing it can switch to informality however this result is obtained for a range of parameter values so narrow as to be of no practical significance

on the diversification observability and measurement of estimation risk this paper reexamines how risk return relationships are affected by investor uncertainty about the exact parameters of the joint rate of return distribution we attempt to clarify results relating to three central issues first we address the issue of diversification focusing on an apt factor model framework second we discuss the observability of estimation risk and describe research experimental designs that should encompass the existence of estimation risk and reveal it in the data finally we suggest exploiting contemporaneous return observations on high and low information securities to aid in the measurement of return parameters for low information securities

an inverse relationship between efficiency and profitability according to size of upper austrian firms some further tentative results this paper examines the relationships between profitability and firm size and efficiency and firm size based on firms in upper austria there is considerable evidence suggesting that the average profitability of small enterprises exceeds that of large firms however productivity tends to be positively related to firm size these empirical findings present something of a paradox

a direct test of roll s conjecture on the firm size effect empirical research indicates that small firms earn higher average rates of return than large firms even after accounting for beta risk roll conjectured that the small firm effect might be attributed to improper estimation of security betas the evidence shows that while the direction of the bias in beta estimation is consistent with roll s conjecture the magnitude of the bias appears to be too small to explain the firm size effect

a competitive model of the informal sector abstract in developing nations formal workers tend to be more experienced more educated and earn more than informal workers these facts are often interpreted as evidence that low skill workers face barriers to entry into the formal sector yet there is little empirical evidence that such barriers are important this paper describes a model where in equilibrium the characteristics of formal and informal workers differ systematically even though labor markets are perfectly competitive the informal sector emphasizes low skill work as in the data because informal managers have access to less outside financing and choose to substitute low skill labor for physical capital

misspecification of capital asset pricing this study documents empirical anomalies which suggest that either the simple one period capital asset pricing model capm is misspecified or that capital markets are inefficient in particular portfolios based on firm size or earnings price e p ratios experience average returns systematically different from those predicted by the capm furthermore the abnormal returns persist for at least two years this persistence reduces the likelihood that these results are being generated by a market inefficiency rather the evidence seems to indicate that the equilibrium pricing model is misspecified however the data also reveals that an e p effect does not emerge after returns are controlled for the firm size effect the firm size effect largely subsumes the e p effect thus while the e p anomaly and value anomaly exist when each variable is considered separately the two anomalies seem to be related to the same set of missing factors and these factors appear to be more closely associated with firm size than e p ratios

start up costs limited enforcement and the hidden economy abstract this paper examines how much of the difference in the size of the informal sector and in per capita income across countries can be accounted by regulation costs and enforcement of financial contracts it constructs and solves numerically a general equilibrium model with credit constrained heterogenous agents occupational choices over formal and informal businesses financial frictions and a government sector which imposes taxes and regulations on formal firms the benefit from formalization is better access to outside finance the quantitative exercises suggest that i regulation costs and not the level of enforcement account for differences in the size of the informal sector between united states and mediterranean europe ii for a developing country like peru however contract enforcement and regulation costs are equally important in accounting for the size of the informal sector and iii regulation costs and contract enforcement do not account for most of the income differences observed among countries

shadow economies size causes and consequences using various methods the size of the shadow economy in 76 developing transition and oecd countries is estimated average size varies from 12 percent of gdp for oecd countries to 23 percent for transition countries and 39 percent for developing countries increasing taxation and social security contributions combined with rising state regulations are driving forces for the increase of the shadow economy especially in oecd countries according to some findings corruption has a positive impact on the size of the shadow economy and a growing shadow economy has a negative effect on official gdp growth

modelling the informal sector formally abstract the theoretical characterization of formal informal sector dualism by labor market dualism is integrated with its empirical characterization by size dualism by supposing that the minimum formal sector wage is only enforced for firms greater than a certain size a firm s size varies directly with the talent of its enterpreneur manager and the choice between formal and informal sector entrepreneurship is determined endogenously it is then shown that the size gap between the smallest formal sector firm and largest informal sector firm varies directly with the formal informal sector wage differential which in turn is shown as expected to increase the further is the minimum wage above the market clearing wage the comparative statics of changes in the size of the firm above which the minimum wage is enforced are also examined

informal sector the credit market channel abstract we build a model of firms choice between formality and informality complying with costly registration procedures allows the firms to benefit from key public goods enforcement of property rights and contracts that make the participation in the formal credit market possible in a moral hazard framework with credit rationing their decision is shaped by the interaction between the cost of entry into formality and the relative efficiency of formal versus informal credit mechanisms and their related institutional arrangements the model is consistent with existing stylized facts on the determinants of informality

economic development as self discovery in the presence of uncertainty about what a country can be good at producing there can be great social value to discovering costs of domestic activities because such discoveries can be easily imitated we develop a general equilibrium framework for a small open economy to clarify the analytical and normative issues we highlight two failures of the laissez faire outcome there is too little investment and entrepreneurship ex ante and too much production diversification ex post optimal policy consists of counteracting these distortions to encourage investments in the modern sector ex ante but to rationalize production ex post we provide some informal evidence on the building blocks of our model

empirical estimates of beta when investors face estimation risk we examine empirical implications of models of differential information that formalize the following intuition securities for which there is relatively little information are perceived as relatively more risky because of the greater uncertainty surrounding the exact parameters of their return distributions the implication that beta risk for low information firms should decline as information increases is confirmed with several data sets we find such a decline over the first geveral periods subsequent to initial public offerings and initial listings there is also an abrupt risk decline at the first annual earnings announcement this paper examines several empirical implications of security return models involving differential information these models formalize the following intuition securities for which there is relatively little information are perceived as relatively more risky because of the greater uncertainty surrounding the exact parameters of their return distributions the research relates to two streams of literature the first revolves around the new issues and new listings market it begins with ibbotson 1975 and includes for example ritter 1984 beatty and ritter 1986 mcconnell and sanger 1987 and muscarella and vetsuypens 1989 the second is the literature dealing with the effects of differential information on the risk assessment of low information firms this second literature is exemplified by the work of klein and bawa 1976 1977 and barry and brown 1984 1985 in our examination we focus on how increased risk associated with low information firms henceforth called estimation risk manifests itself in observed return data we explore how observed security returns to low information firms appear to researchers in relation to how they appear ex ante to investors who base their predictive distribution of security returns on incomplete information about the parameters of the return generating process we also examine data on new listings and new issues to exemplify some of the relationships the data support the most obvious and direct implication of the differential information model that the expected systematic risk of low information firms decreases as time passes and information increases our evidence as in ibbotson that risk declines with seasoning rejects a restrictive null hypothesis that information risk is diversifiable and the under

taxation base in developing countries abstract informal sectors are larger in developing countries than in rich countries this is a result of higher fixed costs of entry into the formal economy in developing countries we show that raising barriers to entry is consistent with a deliberate government policy for raising tax revenue by generating market power and hence rents for the permitted entrants market entry fees foster the emergence of large taxpayers the rents can be readily confiscated by the government through entry fees and taxes on profits at a low administrative cost the relevance of the theory is assessed with a sample of 64 countries empirical analysis supports the results of the paper

using jump diffusion return models to measure differential information by firm size portfolios of stocks issued by small firms are well known to earn rates of return in excess of those commensurate with their market sensitivities one common explanation for this phenomenon is that small firm stocks are riskier than large firm stocks because less information is available about the former than about the latter a necessary condition for such an explanation to be valid is that the information effect not be eliminated by combining the individual stocks into portfolios this paper uses jump diffusion return models to gauge the impact of information by firm size the results show that portfolios of small firm stocks are no more prone to information surprises than are portfolios of large firm stocks however portfolios of small firm stocks are found to react more severely than portfolios of large firm stocks when surprises do occur

social capital and loan repayment performance in northern vietnam this study analyses the effects of social capital on the loan repayment behavior of borrowers in vietnam in the context of agricultural economics an innovative data collection approach is used that originates from the field of sociology a personal network survey is carried out to measure the individual social capital of borrowers social capital variables are defined according to tie strength bonding bridging and social distance linking between the respondent and his her network member social capital has a significant and positive influence on the rescheduling of loans however we find no significant evidence for an effect of social capital on late payment of principal or interest

differential information and security market equilibrium we propose a simple model of equilibrium asset pricing in which there are differences in the amounts of information available for developing inferences about the returns parame ters of alternative securities in contrast with earlier work we show that parameter uncer tainty or estimation risk can have an effect upon market equilibrium under reasonable conditions securities for which there is relatively little information are shown to have relatively higher systematic risk when that risk is properly measured ceteris paribus the initially very limited model is shown to be robust with respect to relaxation of a number of its principal assumptions we provide theoretical support for the empirical examination of at least three proxies for relative information period of listing number of security returns observations available and divergence of analyst opinion

plant size and industry mix effects on uk regional productivity wage costs and operating surplus roper s 1998 plant size and industry mix effects on uk regional productivity wage costs and operating surplus reg studies 32 325 332 the ability of a region to create wealth depends both on the competitiveness of its individual firms and its industrial structure this paper examines the effect of industry mix and plant size structure on the wealth generating capacity of the uk regions from 1980 91 reflecting the findings of similar us studies the analysis suggests that in general uk regions structural disadvantages act to reinforce rather than counter plant level productivity wage cost and operating surplus profitability differentials thus lagging regions face a three fold disadvantage poorly performing plants disadvantageous industry mix and plant size structure this suggests a need for a strategic approach to policy which must aim to counter regions structural disadvantages as well as to improve the competitiveness of existing plants roper s 1998 les effets de la taille des et

taxation wage controls and the informal sector abstract in this paper we study the effects of taxation and wage controls in a developing economy with an informal sector for that purpose we build a model with firm heterogeneity in which a formal and an informal sector endogenously emerge in some productive branches of the economy based on the assumption that the marginal cost of tax and regulation evasion increases with the size of the firm our model offers an explanation for the observed discontinuity in the distribution of firms size the missing middle three forms of dualism scale wage and evasion consistent with market segmentation are obtained the model accounts for the presence of waiting unemployment that seems particularly pervasive in urban regions a computable general equilibrium cge model for cameroon is built incorporating these features various reforms of the tax and regulation system are simulated and their effects on the extent of the informal sector are analyzed

lurking in the shadows the informal sector and government policy abstract this paper develops a dynamic model that sheds light on the evolution of the informal sector we show how tax rates and enforcement policies influence the size of this sector and how the sector naturally declines as an economy transitions towards steady state we find small changes in the tax rate cause measurable changes in the size of informal employment but modest changes in enforcement have negligible effects these results suggest that while reductions in the tax rate combined with increased enforcement reduce the size of the informal sector tax rate reductions and penalties for evasion are the most effective