competition cooperation and innovation organizational arrangements for regimes of rapid technological progress abstract discussions of the link between firm size and innovation are outmoded because the boundaries of the firm have become fuzzy in recent decades strategic alliances constellations of bilateral agreements among firms are increasingly necessary to support innovative activities such alliances can facilitate complex coordination beyond what the price system can accomplish while avoiding the dysfunctional properties sometimes associated with hierarchy antitrust law and competition policy need to recognize that these new organizational forms are often the functional antithesis of cartels though they may have certain structural similarities a more complete understanding of bilateral contracts and agreements ought to reveal when and how cooperation can support rather than impede innovation and competition

performance evaluation of optimized portfolio insurance strategies abstract we use s p 500 index return data for the time period 1985 2013 to evaluate the performance of portfolio insurance strategies we shed light on the question if the performance of a constant proportion portfolio insurance cppi strategy can be improved by means of a time varying multiplier which depends on the estimated future volatility neglecting any inter temporal hedging demand the theoretical foundation of the strategies is given by maximizing the expected utility of a hara investor in a diffusion model setup if the risk premium is assumed to be proportional to the variance the optimal strategy is a cppi strategy otherwise the multiple is time varying ppi it turns out that even time varying multiple strategies based on a rolling window of historical volatility estimates give a significant improvement of cppi strategies the out performance is robust w r t alternative performance measures and is also true for proportional transaction costs and adequate trigger trading

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

benchmarking portfolio insurance and technical analysis a monte carlo comparison of dynamic strategies of asset allocation abstract this paper makes an extensive simulation comparison of popular dynamic strategies of asset allocation for each strategy alternative measures have been calculated for risk return and risk adjusted performance sharpe ratio sortino ratio return at risk moreover the strategies are compared in different market situations bull bear no trend markets and with different market volatility taking into account transaction costs and discrete rebalancing of portfolios the simulations show a dominant role of constant proportion strategies in bear and no trend markets and a preference for benchmarking strategies in bull markets these results are independent of the volatility level and the risk adjusted measure adopted

legislative restraints in corporate bailout design abstract the aftermath of the recent economic crisis saw the largest u s government bailout of corporate entities ever while the bailout was carried out with the explicit goal of restoring stability it aroused much controversy and public criticism based on moral hazard concerns as well as the exorbitant cost to the taxpayer this paper examines the bailout design on behalf of an imperfectly informed legislature aimed at shaping the incentives of a policymaker to whom bailout decisions are delegated we show that important elements of the more moral hazard proof design entail various legislative procedural hurdles which effectively make the bailouts dependent on supermajority support

testing gibrat s law for small young and innovating firms this article analyses whether small young and innovating firms have experienced a greater employment growth than other spanish firms over the period 1990 2000 the study draws upon a sample of 1272 manufacturing firms in which only 967 of the firms survived for the entire ten year period the analyses test gibrat s law both by least squares and by utilizing the procedure proposed by heckman in which a probit survival equation is first estimated to correct for sample selection bias two estimators correcting for selection bias are utilized one that incorporates the inverse mill s ratio and the other that employs maximum likelihood methods all the results reject gibrat s law and support the proposition that small firms have grown larger additionally the results show that old firms grow less than young ones and innovating activity both process and product is a strong positive factor in the firm s survival and its employment growth

optimal taxation and fiscal constitution abstract assuming a world with excessive taxes the focuses of this paper are political mechanisms that ensure efficiency enhancing restraints on taxes in particular it is shown that supermajority requirements to approve tax increases as currently used in some us states is the means of attaining this objective their relationship to another such mechanism prevalent in earlier centuries that of franchise restrictions is discussed

collective moral hazard maturity mismatch and systemic bailouts the paper elicits a mechanism by which private leverage choices exhibit strategic complementarities through the reaction of monetary policy when everyone engages in maturity transformation authorities haver little choice but facilitating refinancing in turn refusing to adopt a risky balance sheet lowers the return on equity the key ingredient is that monetary policy is non targeted the ex post benefits from a monetary bailout accrue in proportion to the number amount of leverage while the distortion costs are to a large extent fixed this insight has important consequences first banks choose to correlate their risk exposures second private borrowers may deliberately choose to increase their interest rate sensitivity following bad news about future needs for liquidity third optimal monetary policy is time inconsistent fourth macro prudential supervision is called for we characterize the optimal regulation which takes the form of a minimum liquidity requirement coupled with monitoring of the quality of liquid assets we establish the robustness of our insights when the set of

the heterogeneous dynamics between growth and profits the case of young firms while there is an increasing interest in the literature about the relationship between profits and business growth the empirical evidence is mixed and inconclusive this can be explained by the difficulty of fully addressing the complex nature of this relationship building on resource based and evolutionary considerations the present study investigates the dynamics between growth and profits of young firms by explicitly considering the endogeneity and heterogeneity aspects of the relationship data are based on a cohort of spanish manufacturing firms tracked during the period 1996 2010 the results indicate that young firm growth has a positive impact on profits in contrast the effect of profits on growth is not significant neither is there a significant correlation between past and current growth importantly we find that the results are strongly influenced by inter firm heterogeneity implications from these findings are discussed

gibrat s law and persistence of growth in greek manufacturing this study makes use of a sample of greek manufacturing firms during 1995 2001 in order to analyze gibrat s law we find gibrat s law is rejected for the total sample of firms since persistence of growth plays a key role the classification of firms in size and age groups however yields more interesting results gibrat s law is rejected for micro small and young firms since an inverse relationship between firm growth and initial firm size is found along with a persistence of growth rates in subsequent periods in contrast gibrat s law is accepted for medium large and old firms implying that the growth patterns of these categories follow a random walk and do not tend to persist in subsequent periods

generalising gibrat using chinese evidence founded on fieldwork this paper reports on determinants of small firm growth and survival using fieldwork evidence collected by face to face and telephone interviews it extends the basic size age model to a comprehensive growth model with two types of additional explanatory variables firm specific and business environmental estimation is by log linear regression on chinese cross section data with corrections for sample selection bias and heteroskedasticity our results from the comprehensive model highlight the importance of location choice and customer orientation for the growth of chinese private firms

on the faustian dynamics of policy and political power this paper examines the faustian dynamics of policy and power we posit a general class of dy namic games in which current policies affect the future distribution of political power resulting in the following faustian trade off if the current ruler chooses his preferred policy he then sacrifices future political power yet if he wants to preserve his future power he must sacrifice his present policy objec tives the trade off comes from the fact that the current political ruler pivotal voter cannot uncouple the direct effect of his policy from its indirect effect on future power a policy endogenous pe equilibrium describes this endogenous transfer of power and the resulting evolution of policy and political power over time we show that the faustian trade off in a pe equilibrium is decomposed into two basic rationales the political preservation effect induces more tempered policy choices than if one s policy choice did not affect one s political fortunes however the reformation effect induces more aggressive policies in order to exploit the productivity gains from policies chosen by even more aggressive successors we distinguish between political systems that give rise to monotone faustian dynamics political power that progressively evolves towards more fiscally liberal types of leaders and cyclical faustian dynamics political power that oscillates between liberal and conservative types of leaders in each case we show that the faustian trade off moderates the choices of each type of leader

assessing progress in research on industrial evolution and economic growth a review article this article reviews a new three volume collection of previously published articles on how industry structures change edited by david audretsch and steven klepper central themes in the chosen contributions are summarized and the disproportionate emphasis on relatively new rather than clearly seminal articles is noted a more detailed analysis is undertaken on how the chosen articles illuminate the determinants of incumbent firms survival and growth advantages i e scale economies first mover advantages organizational competence and growth affecting strategies such as preemptive innovation and mergers

one or more growth processes evidence from new italian firms the paper proposes a descriptive model of firm growth which assumes that learning processes are conditional on existing competencies of the firm and its founders we suggest the idea that firms who do not grow under all realizations of potentially profitable opportunities can be considered as zero learning in order to explain why some firms are zero learning and how these are different from growing ones we put forward and discuss the hypothesis that both start up size and founders pre entry history affect the firm s ability to adjust to market using a sample of 3 905 italian firms born in 1999 and 2000 we find that individual competencies influence start up size but not directly growth we also find a significant nonlinear relationship between start up size and growth implying that firms which were born smaller than a given size grow significantly less the results support the hypothesis that multiple and heterogeneous growth processes coexist and that the growth process of microfirms below a given organizational threshold may be structurally different in the long run from that of firms starting up above that threshold

consistent testing for stochastic dominance under general sampling schemes we propose a procedure for estimating the critical values of the extended kolmogorov smirnov tests of stochastic dominance of arbitrary order in the general k prospect case we allow for the observations to be serially dependent and for the first time we can accommodate general dependence amongst the prospects which are to be ranked also the prospects may be the residuals from certain conditional models opening the way for conditional ranking we also propose a test of prospect stochastic dominance our method is based on subsampling and we show that the resulting tests are consistent and powerful against some n 1 2 local alternatives we also propose some heuristic methods for selecting subsample size and demonstrate in simulations that they perform reasonably we describe an alternative method for obtaining critical values based on recentring the test statistic and using full sample bootstrap methods we compare the two methods in theory and in practice

replicating options with positions in stock and cash in most situations of practical relevance the price behavior of a call option is very similar to a combined position involving the underlying stock and borrowing the call price and the stock price will change in the same direction the effect on the call price of a one dollar change in the stock price however will depend on the current price of the stock the number of shares of stock in the replicating portfolio must equal the slope of the call price curve at that price when the call is deep out of the money i e when the stock price is much lower than the striking price a one dollar change in the stock price has little effect on the call price when the stock price is equal to the striking price a one dollar change in the stock price produces roughly a half dollar change in the call price if the stock price rises until the call is deep in the money a one dollar move in the stock price results in nearly a one dollar move in the call price because the call price behaves this way we must revise

the limits of diversification when losses may be large abstract recent results in value at risk analysis show that for extremely heavy tailed risks with unbounded distribution support diversification may increase value at risk and that generally it is difficult to construct an appropriate risk measure for such distributions we further analyze the limitations of diversification for heavy tailed risks we provide additional insight in two ways first we show that similar non diversification results are valid for a large class of risks with bounded support as long as the risks are concentrated on a sufficiently large interval the required length of the support depends on the number of risks available and on the degree of heavy tailedness second we relate the value at risk approach to more general risk frameworks we argue that in markets for risky assets where the number of assets is limited compared with the bounded distribution support of the risks unbounded heavy tailed risks may provide a reasonable approximation we suggest that this type of analysis may have a role in explaining various types of market failures in markets for assets with possibly large negative outcomes

drivers of sme performance a holistic and multivariate approach to examine the drivers of small and medium sized enterprise sme growth we adopt a holistic multivariate modelling approach integrating macroeconomic determinants with the internal firm characteristics and firm strategy drivers more commonly investigated in firm growth studies utilising such an extended set of variables addresses a gap in the extant firm growth literature in relation to external growth factors offering novel insights on the seeming randomness of firm growth our system generalised method of moments estimation results indicate that the macroeconomic environment influences firm growth both directly and indirectly based on the study of manufacturing sme growth in ireland our findings provide evidence on the integrated effects of macroeconomic conditions firm characteristics and firm strategy for sme growth they also highlight from a theoretical perspective the need to acknowledge the multidimensional nature of sme growth

the medium term effect of r d on firm growth this study analyses the effect of r d expenditure on firm employment growth in the medium term using six cross sectional waves of an innovation survey conducted in the netherlands in all sectors the analysis is focused on firms having positive r d expenditure and investigates whether higher investments in r d in proportion to firm turnover translate into higher medium term growth rates comparisons with growth on a shorter term are conducted by following the firm size evolution since the r d investment for five consecutive years and allowing for firm exit at all time terms quantile regression techniques indicate that a higher r d has a positive effect on high growers and allows a higher number of firms to be high growers still once a firm invests in r d even if a higher investment makes the firm more likely to have a very good performance it does not make it less likely to have a bad one

empirical tests for stochastic dominance efficiency we derive empirical tests for the stochastic dominance efficiency of a given portfolio with respect to all possible portfolios constructed from a set of assets the tests can be computed using straightforward linear programming bootstrapping techniques and asymptotic distribution theory can approximate the sampling properties of the test results and allow for statistical inference our results could provide a stimulus to the further proliferation of stochastic dominance for the problem of portfolio selection and evaluation using our tests the fama and french market portfolio is significantly inefficient relative to benchmark portfolios formed on market capitalization and book to market equity ratio

an assessment of tarp assistance to financial institutions six years after the passage of the 2008 troubled asset relief program commonly known as tarp it remains hard to measure the total social costs and benefits of the assistance to banks provided under tarp programs tarp was not a single approach to assisting weak banks but rather a variety of changing solutions to a set of evolving problems tarp s passage was associated with significant improvements in financial markets and the health of financial intermediaries as well as an increase in the supply of lending by recipients however a full evaluation must also take into account other factors including the risks borne by taxpayers in the course of the bailouts moral hazard costs that could result in more risk taking in the future and social costs related to perceived unfairness our evaluation is organized in five parts 1 what did policymakers do 2 what are the proper objectives of interventions like tarp assistance to financial institutions 3 did tarp succeed in those economic objectives 4 were tarp funds allocated purely on an economic basis or did political favoritism play a role 5 would alternative policies either alongside or instead of tarp and alternative design features of tarp have worked better

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

time invariant portfolio insurance strategies this paper characterizes the complete class of time invariant portfolio insurance strategies and derives the corresponding value functions that relate the wealth accumulated under the strategy to the value of the underlying insured portfolio time invariant strategies are shown to correspond to the long run policies for a broad class of portfolio insurance payoff functions

the power to tax analytical foundations of a fiscal constitution preface 1 taxation in constitutional perspective 2 natural government a model of leviathan 3 constraints on base and rate structure 4 the taxation of commodities 5 taxation through time income taxes capital taxes and public debt 6 money creation and taxation 7 the disposition of public revenues 8 the domain of politics 9 open economy federalism and taxing authority 10 toward authentic tax reform prospects and prescriptions epilogue notes selected bibliography index

what happens to gazelles the importance of dynamic management strategy the starting point of this study is gibrat s law which is contrasted with strategic management this logic is subsequently applied to a group of remarkably dynamic high growth firms gazelles strategic management theory emphasises the importance of firms adjusting strategies in response to changes in the external environment in our study it is used to explain several key empirical findings using a novel british data set containing information on more than 100 gazelles these findings help explain 1 why gibrat s law of random firm growth processes does not generally hold 2 which strategy and environmental variables have a predictable influence on firm performance and 3 why routine application of best practice strategies is unlikely to foster firm growth in a changing economic environment in so doing this paper contributes to the large body of literature on small firm growth

legal political and institutional constraints on the financial crisis policy response as the financial crisis manifested itself and peaked in 2007 and 2008 the response of us policymakers and regulators was shaped in important ways by legal and political constraints policymakers lacked certain legal authorities that would have been useful for addressing the crisis notably to use public capital to stabilize the banking sector or to deal with the failure of large financial firms such as insurance companies and investment banks that were outside the scope of bank regulators authority to resolve deposit taking commercial banks legal constraints were keenly felt at the us department of the treasury where i served as a senior official from december 2006 to january 2009 treasury had virtually no emergency economic authority at the onset of the crisis in 2007 with the exception of the treasury s exchange stabilization fund which was intended for use in exchange rate interventions as the systemic risks of the financial crisis became apparent the initial policy response largely fell to the federal reserve which had the authority to act under emergency circumstances there will inevitably be another financial crisis and the response will be shaped by both the lessons learned from recent history and the statutory and political changes in the wake of the crisis the paper thus concludes by discussing changes in constraints since the crisis with a focus on two developments 1 the political reality that there will not in the near future be another wide ranging grant of fiscal authority as was given with the troubled asset relief program and 2 the new legal authorities provided in the wall street reform and consumer protection act of 2010 commonly known as the dodd frank law

continued entrepreneurship ability need and opportunity as determinants of small firm growth the purpose of this research was to enhance our understanding of the growth or non growth of individual small businesses growth here being regarded as an indication of continued entrepreneurship taken together earlier studies have suggested a very large number of determinants of entrepreneurship and growth yet no very strong explanatory factors emerge it is argued here that all of the specific lowlevel explanatory variables that have previously been used can be regarded as aspects of either of three major determinants ability need and opportunity a model based on these three major factors is developed and the results of previous studies are reviewed in the light of this more abstract model in the model objective factors are separated from their subjective counterparts and it is suggested that subjective factors or reality as perceived influence growth motivation and direct behavior although objective factors only partly determine subjective perceptions they can have important direct effects on outcomes i e actual growth using survey data from more than 400 swedish small firms and applying partial least squares analysis which is a technique for analyzing structural relations among indirectly measured concepts the parameters of the model are empirically estimated the results largely lend support for the usefulness of the model more specifically the analyses suggest that 1 objective measures of ability need and opportunity can explain a substantial share of the variation in actual historical growth rates 2 objective and subjective measures of these three factors can explain a substantial share of the variation in growth motivation 3 in both cases need related issues appear more important than ability and opportunity which would mean that satiation is the major reason why small firms stop growing 4 subjective factors contain growth relevant information that is not captured by objective measures 5 direct effects of objective variables on actual growth can be traced 6 some relations are consistent whereas others seem to vary considerably across industries and 7 while the model largely gains support the analyses also suggest some additional relations that are theoretically reasonable and may deserve consideration in future studies finally it is argued that for the advancement of entrepreneurship research conceptual models at a higher level of abstraction like the one developed in this article are needed such models can add meaning to empirical facts and have the virtue of reducing complexity without assuming away too many potential contingencies it is also suggested that entrepreneurship is a matter of degree and can show itself in different ways such as start up growth innovation etc in practice the sole measure of entrepreneurship has often been a person s current status as being or not being the founder or owner manager of a small firm in future studies the use of a composite measure of the degree of entrepreneurship may prove more fruitful than the comparison of characteristics approach has been

is there a politically optimal level of judicial independence independent courts render current policy more durable by raising the cost of future policy changes but may also engage in policy making of their own this paper asks is there an optimal level of judicial independence from the perspective of incumbent officials in the other branches to answer that question the paper develops a model of strategic institutional choice and tests it on the judicial institutions of the american states consistent with the model s predictions the most independenceenhancing institutions are found where political competition between rival parties is tightest and differences between party platforms are largest

growth beyond gibrat firm growth processes and strategies firm growth studies have been focused on the question of whether firm growth is independent of firm size this shadow of gibrat s law has drawn attention to the randomness in firm growth however it has also clouded relevant research avenues that enquire into the role of firm growth processes and strategies this paper takes stock of the current state of the art of firm growth studies in small business economics and makes a plea for more specific research approaches that highlight the nature of the firm organization and growth paths this rejuvenation of firm growth studies comprises a search for necessary mechanisms and contingent conditions for the growth of firms

theory of constant proportion portfolio insurance abstract we study constant proportion portfolio insurance cppi a dynamic strategy that maintains the portfolio s risk exposure a constant multiple of the excess of wealth over a floor up to a borrowing limit we use this simple rule to investigate how transaction costs and borrowing constraints affect portfolio insurance type strategies absent transaction costs cppi is equivalent to investing in perpetual american call options and is optimal for a piecewise hara utility function with a minimum consumption constraint as the multiple increases the payoffs under cppi approach those of a stop loss strategy the expected holding period return is not monotonic in the multiple and a higher expected return can be obtained under cppi than with a stop loss strategy

committees with supermajority voting yield commitment with flexibility abstract a fundamental problem for government is how to combine commitment to certain policies with the flexibility required to adjust them when needed rogoff 1985 rogoff k 1985 the optimal degree of commitment to an intermediate monetary target q j econ 100 4 1169 1189 showed that a way to strike the right balance is to appoint an optimally conservative policy maker in real life however policy makers also have power over decisions where optimal plans are time consistent so delegating to a conservative person could be undesirable a flexible delegation device can be found in a large committee of randomly appointed members voting over policy after observing a shock when facing dynamic inconsistency under a single crossing property there exists a supermajority rule that implements the population median s optimally conservative policy maker with certainty another single crossing property guarantees that if simple majority voting is used to select the voting rule that will govern policy choice the supermajority preferred by the median is chosen for problems where dynamic inconsistency vanishes the committee will choose to make decisions by simple majority implementing median outcomes an application to monetary policy is developed we show that the optimal supermajority is higher when dynamic inconsistency is more severe when preferences are more homogeneous and when the economy is less volatile

option pricing and replication with transactions costs transactions costs invalidate the black scholes arbitrage argument for option pricing since continuous revision implies infinite trading discrete revision using black scholes deltas generates errors which are correlated with the market and do not approach zero with more frequent revision when transactions costs are included this paper develops a modified option replicating strategy which depends on the size of transactions costs and the frequency of revision hedging errors are uncorrelated with the market and approach zero with more frequent revision the technique permits calculation of the transactions costs of option replication and provides bounds on option prices

on the existence of persistently outperforming firms this study analyses persistence in growth rates for a data set of manufacturing firms of all sizes previous quantile autoregressions of firm growth rates show that extreme growth events are likely to be negatively correlated over time thus questioning the existence of persistent outperformers by supplementing the quantile regression analyses with transition probability matrices our study shows that bouncing firms coexist with persistent outperformers this result is shown to be robust for all size classes as well as for the exclusion of firms who experienced acquisitions or spin offs

strategic delegation and voting rules abstract the selection of political representatives depends on the political system principals such as voters or districts may benefit by strategically electing representatives different from themselves while a status quo biased delegate may be a better negotiator an enthusiastic representative has a better chance of being included in the majority coalition a larger majority requirement leads to conservative delegation and hence a status quo bias a poor minority protection does the opposite through strategic delegation the political system also determines whether centralization or decentralization is beneficial

uncertainty as commitment time inconsistency of no bailout policies can create incentives for banks to take excessive risks and generate endogenous crises when the government cannot commit however at the outbreak of nancial problems usually the government is uncertain about their nature and hence it may delay intervention to learn more about them we show that intervention delay leads to strategic restraint banks endogenously restrict the riskiness of their portfolio relative to their peers in order to avoid being the worst performers and bearing the cost of such delay these novel forces help to avoid endogenous crises even when the government cannot commit we analyze the eect of government policies from the perspective of this new result

corporate lobbying political connections and the bailout of banks abstract political involvement has long been shown to be a profitable investment for firms that seek favorable regulatory conditions or support in times of economic distress but how important are different types of political involvement for the timing and magnitude of political support to answer this question we take a comprehensive look at the lobbying expenditures and political connections of banks that were recipients of government support under the 2008 troubled asset relief program tarp we find that politically engaged firms were not only more likely to receive tarp funds but they also received a greater amount of tarp support and received the support earlier than firms that were not politically involved

performance evaluation of portfolio insurance strategies using stochastic dominance criteria abstract this paper evaluates the performance of the stop loss synthetic put and constant proportion portfolio insurance techniques based on a block bootstrap simulation we consider not only traditional performance measures but also some recently developed measures that capture the non normality of the return distribution value at risk expected shortfall and the omega measure we compare them to the more comprehensive stochastic dominance criteria the impact of changing the rebalancing frequency and level of capital protection is examined we find that even though a buy and hold strategy generates higher average excess returns it does not stochastically dominate the portfolio insurance strategies nor vice versa our results indicate that a 100 floor value should be preferred to lower floor values and that daily rebalanced synthetic put and cppi strategies dominate their counterparts with less frequent rebalancing

good carry bad carry we distinguish between good and bad carry trades constructed from group of ten g 10 currencies the good trades exhibit higher sharpe ratios and sometimes positive return skewness in contrast to the bad trades which have both substantially lower sharpe ratios and highly negative return skewness surprisingly good trades do not involve the most typical carry currencies like the australian dollar and japanese yen the distinction between good and bad carry trades significantly alters our understanding of currency carry trade returns and invalidates for example explanations invoking return skewness and crash risk

firm growth in industrial clusters of the united kingdom this article examines how firm growth is influenced by the strength of the industrial cluster in which the firm is located it presents econometric estimates of firm growth for 56 two digit industries in the uk in about half of these industries there is a positive and statistically significant association between firm growth and own sector employment significant associations between firm growth and other sector employment are less common but where these arise they are generally negative we find that a weak rule of thumb applies in most industries own sector effects are positive or insignificant while other sector effects are negative or insignificant cluster effects are strongest in manufacturing manufacturing related and infrastructure but weaker in services

does gibrat s law hold evidence from canadian retail and manufacturing firms this paper investigates the validity of gibrat s law holding for firms in manufacturing and retail trade sectors the object is to expand our knowledge of gibrat s law to include non manufacturing firms a unique longitudinal firm level database which contains information on canadian incorporated establishments enables the inter industry comparison the findings of the analysis are that gibrat s law is violated in both manufacturing and retail sectors violations of gibrat s law for both sectors include i growth rates that depend on firm size ii growth variability that depends on firm size and iii a negative persistence of firm growth finally age effects or selection effects are not the causes of these violations