policy relevant treatment effects accounting for individual level heterogeneity in the response to treatment is a major development in the econometric literature on program evaluation a substantial body of empirical evidence demonstrates that econometric models fit on individual level data manifest heterogeneity in treatment effects that is present even after conditioning on observables an important distinction is the one between evaluation models where participation in the program being evaluated is based at least in part on unobserved idiosyncratic responses to treatment and models where participation is not based on unobserved idiosyncratic responses this is the distinction between selection on unobservables and selection on observables the validity of entire classes of evaluation estimators hinges on whether or not they allow agents to act on unobserved idiosyncratic responses in a wide variety of applications the available evidence suggests that not only are ex post postenrollment responses heterogeneous but that ex ante decisions to participate in programs are based in part on these heterogeneous responses heckman and vytlacil 2000b 2001

convertible debt corporate call policy and voluntary conversion this paper examines why in contrast to the predictions of finance theory firms do not call convertible debt when the conversion price exceeds the call price the empirical results suggest that the principal reason is because some firms enjoy an advantage of paying less in after tax interest than they would pay in dividends were the bond converted this cash flow incentive is the inverse of an investor s incentive to convert voluntarily if the converted dividends are greater than the bond s coupon because of taxation however the decisions by investors and firms are not symmetric and there exist bonds which the firm may not call and an investor will not convert the results also find that voluntary conversion is significantly related to both the conversion price and the differential between the coupon and the dividends on the converted stock

do r d tax credits work evidence from a panel of countries 1979 1997 this paper examines the impact of fiscal incentives on the level of r d investment an econometric model of r d investment is estimated using a new panel of data on tax changes and r d spending in nine oecd countries over a 19 year period 1979 1997 we find evidence that tax incentives are effective in increasing r d intensity this is true even after allowing for permanent country specific characteristics world macro shocks and other policy influences we estimate that a 10 fall in the cost of r d stimulates just over a 1 rise in the level of r d in the short run and just under a 10 rise in r d in the long run

stock returns before and after calls of convertible bonds ofer and natarajan 1987 report negative statistically significant cumulative average abnormal returns over five years following convertible bond calls we show that these results are obtained only if returns preceding the call dates are used for market model parameter estimation returns preceding calls tend to be positive and unusually large this means that predicted post call returns based on pre call parameter estimates are biased upward consequently the corresponding abnormal returns are biased downward we also discuss a corrected test statistic we conclude that the evidence does not indicate market inefficiency in the stock price reaction to convertible calls

an investigation of market microstructure impacts on event study returns we investigate the importance of bid ask spread induced biases on event date returns as exemplified by seasoned equity offerings by nyse listed firms we document significant negative return biases on the offering day which explain a large portion of the negative event date return documented in the literature buy sell order flow imbalance is prominent around the offering and induces a relatively large spread bias if order imbalances are suspected the researcher can use returns calculated from the midpoint of the closing bid and ask quotes instead of returns calculated from closing transaction prices to avoid this return bias several studies document the impact of bid ask spreads on security return patterns which appear inconsistent with the informational efficiency of capital markets phillips and smith 1980 find spread induced bias to be important in explaining apparent arbitrage opportunities in the option markets lakonishok and smidt 1984 uncover evidence suggesting a relation between bid ask spreads and turn of the year seasonality in stock returns 1 keim 1989 and porter 1989 further document the empirical importance of

the possibility of informationally efficient markets abstract a rational expectations equilibrium with positive demand for financial information does exist under fully revealing asset price contrary to a wide held conjecture whereas a continuum of investors is inconsistent with fully revealing equilibrium finitely many investors with average portfolios demand information in equilibrium if they can adjust portfolio size in an additive signal return model more information diminishes the expected excess return of a risky asset so that investors who only have a choice of portfolio composition or whose asset endowments strongly differ from the average portfolio are worse off under fully revealing price information market equilibria both with and without information acquisition are pareto efficient

the impact of r d subsidies on r d employment composition in this paper we examine the impact of subsidies granted at national and regional levels on a set of r d employment variables and specifically we seek to identify the existence of the behavioural additionality effects of these public subsidies on firms r d human resources we begin by assessing the effects of public funds on r d private expenditures and on the number of r d employees and then focus on their impact on the composition of human resources engaged in r d as classified by occupation and level of education the data used correspond to the spanish technological innovation panel for the period 2006 2011 to control for selection bias and endogeneity a combination of non parametric matching techniques are implemented after ruling out the existence of crowding out effects our results show that r d subsidies increase the number of r d employees however no increase is found in the average level of qualification of r d staff members in subsidized firms all in all the effects of public support are heterogeneous being dependent on the source of the subsidy and the firms characteristics

nonparametric estimation of sample selection models sample selection models provide an important way of accounting for economic decisions that combine discrete and continuous choices and of correcting for nonrandom sampling nonparametric estimators for these models are developed in this paper these can be used for estimating shapes and important economic quantities as in standard nonparametnc regression endogeneity of regressors of interest is allowed for series estimators for these models are developed which are useful for imposing additivity restnctions that arise from selection corrections convergence rates and asymptotic normality results are derived an application to returns to schooling among australian young females is given

complementarities multiplicity and supply information if traders can obtain private information about the payoff and the supply of a stock then there can exist i complementarity in information acquisition and ii multiple equilibria in the financial and information markets the additional dimension of supply information increases coordination possibilities in the financial market leading to multiple equilibria the existence of two information sources can lead to information acquisition being complementary the multiplicity of equilibria is suggestive of excess volatility and crashes the different financial market equilibria imply differing patterns of cost of capital and volume of trade 2009 by the european economic association

public subsidies and the employment growth of high tech start ups assessing the impact of selective and automatic support schemes the aim of this article is to assess the impact of public subsidies on the employment growth of new technology based firms ntbfs contingent on i the type of policy scheme either selective or automatic and ii the age of the firms at the time of receipt of the subsidy for this purpose we analyze a sample composed of 536 italian independent ntbfs observed during a 10 year period 1994 2003 we estimate augmented gibrat law type dynamic panel data models using different techniques aimed at controlling for the potentially endogenous nature of public financing namely the generalized method of moments system fixed effect instrumental variable and inverse probability treatment weights estimators the results of the estimates show that selective support schemes had a larger impact on employment growth than automatic ones but only if they were awarded in the very early period of the recipient firms lives however selective subsidies awarded to young ntbfs are rare in italy calling into question the capability of the italian industrial policy to sustain the growth of the high tech entrepreneurial sector

the estimation of wage gains and welfare gains in self selection models the authors modify the basic self sele ction model for the effects ofeducation training unions and other activities on wages by including heterogeneity of rewards to the activity i e diffe rences across individuals in the rate of return to the activity the authors sho w that such heterogeneity creates a new form of selectionbias they provide tes ts for its presence and draw out its implications for the wage and welfare gains to the activity an empirical application provides strong support for such hete rogeneityin one particular training program copyright 1987 by mit press

speculation and hedging in segmented markets we analyze a model in which traders have different trading opportunities and learn information from prices the difference in trading opportunities implies that different traders may have different trading motives when trading in the same market some trade for speculation and others for hedging and thus they may respond to the same information in opposite directions this implies that adding more informed traders may reduce price informativeness and therefore provides a source for learning complementarities leading to multiple equilibria and price jumps our model is relevant to various realistic settings and helps to understand a variety of modern financial markets

ceo characteristics and firm r d spending over the past fifteen years a number of studies have examined the determinants of firm r d spending these studies however almost invariably focus on the role of firm or external ownership characteristics in predicting r d spending while overlooking the attributes of the top managers involved in allocating corporate resources in this study we change that focus by empirically examining how r d spending as compared to industry competitors varies at firms based on the characteristics of their ceos using a sample of publicly traded firms we find that ceo characteristics explain a significant proportion of the sample variance in firm r d spending even when corporate strategy ownership structure and other firm level attributes are controlled in terms of individual ceo characteristics we find that r d spending is greater at firms where ceos are younger have greater wealth invested in firm stock and signifacant career experience in marketing and or engineering r d in contrast to existing theory we find that the amount of a ceo s formal education had no significant association with r d spending once a ceo has attained a college degree however significant r d spending increases are found at firms where ceos have advanced science related degrees from subgroup analyses we further find that ceo effects on relative r d spending increase with longer ceo tenure implying that ceos over time may mold r d spending to suit their own preferences from these results we make implications for both research on determinants of r d spending and managerial practice

a behavioral theory of r d expenditures and innovations evidence from shipbuilding i base an integrated model of innovation development and launch on the behavioral theory of the firm this model specifies that research and development expenses are increased when low performance causes problemistic search and when excess resources cause slack search innovations generated by search are launched if low performance gives managers high risk tolerance using data from shipbuilding firms i show that high performance reduces r d intensity and innovation launches and high slack increases r d intensity as predicted

asset substitution and structured financing this article shows how structured financing can be used to solve the asset substitution problem in a dynamic setting structuring induces the firm s owner to optimally choose the first best operating strategy even though the owner s value function might be locally convex concave which would ordinarily lead to overinvestment underinvestment in risky projects this result is demonstrated in two different continuous time settings one that is based on the risk shifting framework of leland 1998 and one that generalizes the scaled return model of green 1984 it is shown that the contractual nature of the structuring is a key determinant of the issuing firm s dynamic asset volatility furthermore unlike nonstructured financing the default conversion probability of a structured debt security may be increasing decreasing in the firm s total assets structured securities are therefore hedge assets which potentially explains the popularity of structured securities among investors and third party issuers

does government r d policy mainly benefit scientists and engineers conventional wisdom holds that the social rate of return to r d significantly exceeds the private rate of return and therefore r d should be subsidized in the u s the government has directly funded a large fraction of total r d spending this paper shows that there is a serious problem with such government efforts to increase inventive activity the majority of r d spending is actually just salary payments for r d workers their labor supply however is quite inelastic so when the government funds r d a significant fraction of the increased spending goes directly into higher wages using cps data on wages of scientific personnel this paper shows that government r d spending raises wages significantly particularly for scientists related to defense such as physicists and aeronautical engineers because of the higher wages conventional estimates of the effectiveness of r d policy may be 30 to 50 too high the results also imply that by altering the wages of scientists and engineers even for firms not receiving federal support government funding directly crowds out private inventive activity this abstract was borrowed from another version of this item

how effective are fiscal incentives for r d a review of the evidence this paper surveys the econometric evidence on the effectiveness of fiscal incentives for r d we describe the effects of tax systems in oecd countries on the user cost of r d the current position changes over time and across different firms in different countries we describe and criticize the methodologies used to evaluate the effect of the tax system on

information revelation and market incompleteness this paper introduces a theory of market incompleteness based on the information transmission role of prices and its adverse impact on the provision of insurance in financial markets we analyse a simple security design model in which the number and payoff of securities are endogenous agents have rational expectations and differ in information endowments and attitudes toward risk when markets are incomplete equilibrium prices are typically partially revealing while full relevation is attained with complete markets the optimality of complete or incomplete markets depends on whether the adverse selection effect the unwillingness of agents to trade risks when they are informationally disadvantaged is stronger or weaker than the hirshleifer effect the impossibility of trading risks that have already been resolved as new securities are issued and prices reveal more information when the hirshleifer effect dominates an incomplete set of securities is preferred by all agents and generates a higher volume of trade hirshleifer 1971 was the first to point out that revelation of information can reduce risksharing opportunities in insurance markets resulting in a welfare loss in this paper we build on hirshleifer s insight to develop a theory of endogenous market incompleteness we show that in an economy with asymmetric information in which agents learn from prices an incomplete financial structure may be optimal the reason is that less information is revealed by prices when markets are incomplete than in an otherwise identical economy with complete markets 1 paradoxically a greater degree of incompleteness may result in better risk sharing since the only risks that can be traded are those whose resolution is not common knowledge at the time of trade for the same reason incompleteness of markets may also foster a higher volume of trade the connection between security design asymmetric information trading volume and welfare in financial markets is a subtle one and it is important to isolate its various facets the efficacy of security markets in aggregating and transmitting private information depends on the characteristics of the financial structure and especially on the number of tradeable assets indeed within the rational expectations paradigm informational differences disappear in equilibrium generically when the price vector has

the effects of federal research and development subsidies on firm commercialization behavior abstract this paper assesses the longer term up to 14 years causal impact of federal research and development r d subsidies on firms commercialization behavior the data are for small firms which applied to the 1998 2000 advanced technology program atp competitions a variant of the research design pioneered by heckman 1979 allows for selection bias to be controlled for commercialization behavior is operationalized as the number of new product announcements related to the technology a firm mentions in its atp proposal s the major finding is that receiving an atp award has a positive and significant causal impact on a firm s commercialization behavior

foreign direct investment as a way to guide the innovative process towards sustainability abstract in 1972 for the first time the term sustainable development was coined at the stockholm conference and in 1987 the brundtland report established the sustainability innovation binomial since then extensive research into sustainability oriented innovation has been conducted focused during the last decade on smes and recognizing these as the main actor of sustainable development for which foreign direct investment fdi is considered from a research and institutional point of view as a vital source although academic literature presents conflicting conclusions in this context this paper aims to perform a microeconomic analysis of how fdi influences the innovative process of smes and how this can lead to a process oriented towards sustainability to this end a panel of 4667 smes has been analyzed spanning a sample period between 2004 and 2013 through a binary logit model which compares and contrasts smes with fdi and equivalent smes without fdi over time and therefore exposed to a changing economy the most significant results are that fdi is attracted mainly by factors associated with technological supply which when coupled with being of medium size and located in a manufacturing sector of medium high technology generates positive spillovers these depend to a large extent on public funding which allows these companies to be more innovative and makes it more likely they focus their innovative process on sustainability

r d support programs in developing countries the turkish experience in this study the determinants of private r d investment are examined at the level of firms in the turkish manufacturing industry we focus our attention on the effect of public r d support programs our findings indicate that public r d support significantly and positively affects private r d investment there seems to be even an acceleration effect on firm financed r d expenditures smaller r d performers benefit more from r d support and perform more r d in addition technology transfer from abroad and domestic r d activity show up as complementary processes given the scarcity of studies on r d support in technologically weaker economies our hope is that the less developed countries can exploit these findings in constructing socially beneficial technology policies

price reversals bid ask errors or market overreaction abstract we show that bid ask errors in transaction prices are the predominant source of apparent price reversals in the short run for nasdaq firms once we extract measurement errors in prices caused by the bid ask spread we find little evidence of market overreaction on the contrary we find that security returns are positively and not negatively autocorrelated we also show that bid ask errors lead to substantial spurious volatility in transaction returns about half of measured daily return variances can be induced by the bid ask effect

the paradox of financial fire sales the role of arbitrage capital in determining liquidity how can fire sales for financial assets happen when the economy contains well capitalized but non specialist investors our explanation combines rational expectations equilibrium and lemons models when specialist informed market participants are liquidity constrained prices become less informative this creates an adverse selection problem decreasing the supply of high quality assets and lowering valuations by non specialist uninformed investors who become unwilling to supply capital to support the price in normal times arbitrage capital can multiply itself by making uninformed capital function as informed capital but in a crisis this stabilizing mechanism fails

pricing warrants an empirical study of the black scholes model and its alternatives this paper uses a sample of over 25 000 daily warrant prices to empirically investigate potential problems with the commonly used warrant pricing model proposed by black and scholes as an extension of their call option model one problem seems to be especially important the constant variance assumption of the dilution adjusted blackscholes model appears to cause biases in model prices for almost all warrants and over the entire sample period we show that more accurate price forecasts are obtained with a specific form of the constant elasticity of variance model since the derivation of the black scholes model financial economists have speculated on its usefulness for warrant valuation in their pathbreaking paper black and scholes 1973 claim that in many cases their model can be used as an approximation to give an estimate of the warrant value however black and scholes 1973 warn that

the effects of public r d subsidies on firms innovation activities the case of eastern germany this study analyzes the effects of public r d policy schemes on the innovation activities of firms in eastern germany the main question in this context is whether public funds stimulate r d activities or simply crowd out privately financed r d empirically we investigate the average causal effects of all public r d schemes in eastern germany using a nonparametric matching approach compared to the case in which no public financial means are provided it turns out that firms increase their innovation activities by about four percentage points

the valuation effects of warrant extensions in this paper we examine the warrant price and stock price reactions to the announcement of warrant life extensions as predicted by option pricing theory warrant prices increase in response to an extension our principal finding is that the stocks of firms making the extension announcements experience positive abnormal returns on average we interpret the evidence as supportive of an anticipation hypothesis in which the market perceives the decision to extend the warrants expiration date as a favorable indication for the stock price before the subsequent expiration

is public r d a complement or substitute for private r d a review of the econometric evidence is public r d spending complementary and thus additional to private r d spending or does it substitute for and tend to crowd out private r d conflicting answers are given to this question we survey the body of available econometric evidence accumulated over the past 35 years a framework for analysis of the problem is developed to help organize and summarize the findings of econometric studies based on time series and cross section data from various levels of aggregation laboratory firm industry country the findings overall are ambivalent and the existing literature as a whole is subject to the criticism that the nature of the experiment s that the investigators envisage is not adequately specified we conclude by offering suggestions for improving future empirical research on this issue

investment and usage of new technologies evidence from a shared atm network when new technologies become available it is not only essential that firms have the correct investment incentives but often also that consumers make the proper usage decisions this paper studies investment and usage in a shared atm network be cause all banks coordinate their atm investment decisions there is no strategic but only a pure cost saving incentive to invest at the same time because retail fees for cash withdrawals are regulated to zero at both branches and atms consumers may not have the proper incentives to substitute their transactions from branches to the available atms we develop an empirical model of coordinated investment and cash withdrawal demand where banks choose the number of atms and consumers decide whether to withdraw cash at atms or branches we find that banks substantially underinvested in the shared atm network and thus provided too little geographic coverage this contrasts with earlier findings of strategic overinvestment in networks with partial incompatibility furthermore we find that consumer usage of the avail able atm network is too low because of the zero retail fees for cash withdrawals at branches a direct promotion of investment through subsidies or other means can improve welfare but the introduction of retail fees on cash withdrawals at branches would be more effective even if this does not encourage investment per se

innovation in israel 1968 1997 a comparative analysis using patent data abstract the israeli high tech sector is widely regarded as a hotbed of cutting edge technologies and as the growth engine of the israeli economy in the 1990s and beyond in this paper we present a close up portrait of innovation in israel for the past 30 years with the aid of highly detailed patent data we use for that purpose all israeli patents taken in the us over 7000 as well as us patents and patents from other countries for comparative purposes the time path of israeli patenting reveals big jumps in the mid 1980s and then again in the early 1990s reflecting underlying shocks in policy and in the availability of relevant inputs israeli ranks high in terms of patents per capita compared to the g7 the asian tigers and a group of countries with similar gdp per capita finland is strikingly similar taiwan s patenting has grown extremely fast and is now on par with israel south korea is rapidly closing the gap the technological composition of israeli innovations reflects quite well worldwide technological trends except that computers and communications the fastest growing field in the us has grown even faster in israel the weak side resides in the composition of israeli assignees the actual owners of the intellectual property rights just 35 of israeli patents were assigned to israeli corporations a much lower percentage than in most other countries relatively large shares went to foreign assignees to universities and the government and to private inventors on the other hand israeli patents are of good quality in terms of citations received and getting better over time us patents command on average more citations but not in computers and communications or in biotechnology and israeli patents are significantly better than those of the reference group of countries

r d and subsidies at the firm level an application of parametric and semi parametric two step selection models this paper analyzes the effects of public r d subsidies on r d expenditure in the german manufacturing sector the focus is on the question whether public r d funding stimulates or crowds out private investment cross sectional data at the firm level is used by apllying parametric and semiparametric selection models it turns out that public funding increases firms r d expenditure altough the magnitude of the treatment effect depends on the assumpions imposed by the particular selection model

the use and abuse of export subsidies evidence from colombia 12033 christian helmers and natalia trofimenko we evaluate the impact of firm specific export subsidies on exports in colombia using a two step selection model we predict firm specific subsidy amounts that can be explained by the characteristics that determine firms eligibility for government support and its amount drawing on the accounts of the discretionary allocation of subsidies in developing countries we interpret the discrepancy between the predicted and the observed subsidy amounts as a proxy for a firm s ties to government officials controlling for observable and unobservable firm characteristics as well as persistence in exporting we find that although in general subsidies exhibit a positive impact on export volumes this impact is diminishing in subsidy size and in the degree of a firm s connectedness

general equilibrium treatment effects a study of tuition policy this paper defines and estimates general equilibrium treatment effects the conventional approach in the literature on treatment effects ignores interactions among individuals induced by the policy interventions being studied focusing on the impact of tuition policy and using estimates from our dynamic overlapping generations general equilibrium model of capital and human capital formation we find that general equilibrium impacts of tuition on college enrollment are an order of magnitude smaller than those reported in the literature on microeconomic treatment effects the assumptions used to justify the late parameter in a partial equilibrium setting do not hold in a general equilibrium setting policy changes induce two way flows we extend the late concept to a general equilibrium setting we present a more comprehensive evaluation to program evaluation by considering both the tax and benefit consequences of the program being evaluated and placing the analysis in a market setting this abstract was borrowed from another version of this item

tax shields sample selection bias and the information content of conversion forcing bond calls the information content of conversion forcing bond calls depends on the after tax cash flow to bondholders if the dividend after conversion exceeds the after tax coupon but is less than the before tax coupon the call reveals unanticipated decreases in dividends and or earnings that reduce the tax shield from interest payments in contrast a call when the dividend is less than the after tax coupon reveals the timing of an anticipated shift from exceptional firm specific positive growth to the industry norm efforts to document properties of convertible calls are subject to sample selection bias because calls are disproportionately associated with positive pre call firm specific growth brennan and schwartz 1977 1980 and ingersoll 1977a show that if capital markets are perfect the optimal policy is to call and force conversion the first time the bond s conversion value exceeds its cash redemption value however ingersoll 1977b 1 and constantinides and grundy 1987 provide evidence that firms delay calling convertible debt and mikkelson 1980 1981 ofer and natarajan 1987 and singh cowan and nayar 1990 document a statistically significant negative return to equity at the call announcement to explain these results which are inconsistent with the optimal call policy and its predicted effect on equity value in a perfect capital market several asymmetric information hypotheses have been put forth mikkelson 1981 1985 hypothesizes that the negative market reaction results from the market inferring that management expects a decline in the present value of the debt s tax shield possibly due to a decline in future earnings this suggests that managers refrain from calling due to the tax shields provided by the debt harris and raviv 1985 present a signaling model in which a

information aggregation in a noisy rational expectations economy abstract this paper analyzes a general equilibrium model of a competitive security market in which traders possess independent pieces of information about the return of a risky asset each trader conditions his estimate of the return both on his own private source of information and price which in equilibrium serves as a noisy aggregator of the total information observed by all traders a closed form characterization of the rational expectations equilibrium is presented a counter example to the existence of fully revealing equilibrium is developed

banking scope and financial innovation we explore the implications of financial system design for financial innovation we begin with assumptions about the investment opportunities of firms their observable attributes and the roles of commercial banks investment banks and the financial market we examine the borrower s choice between bank and financial market funding the commercial bank s choice of monitoring capacity and the investment bank s choice of whether to invest in financial innovation our main result is that financial innovation in a universal banking system is stochastically lower than innovation in a financial system in which commercial and investment banks are functionally separated article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

evaluating the econometric evaluations of training programs with experimental data this paper takes the results of an employment and training program thatwas run as a field experiment in which the participants were randomlyassigned into a treatment or a control group and compares these results to the estimates that might have been produced by an econometrician who evaluated the program using the same econometric procedures that have been used in the program evaluation literature this comparison shows that many of these econometric procedures fail toreplicate the experimentally determined results and suggests that researchers should be aware of the potential for specification errorsin other nonexperimental evaluations copyright 1986 by american economic association

the relationship between r d collaboration subsidies and r d performance empirical evidence from finland and germany this study focuses on the impact of innovation policies and r d collaboration in germany and finland we consider collaboration and subsidies as heterogeneous treatments and perform an econometric matching to analyze r d and patent activity at the firm level in general we find that collaboration has positive effects in germany subsidies for individual research do neither exhibit a significant impact on r d nor on patenting but the innovative performance could be improved by additional incentives for collaboration for finnish companies public funding is an important source of finance for r d without subsidies recipients would show less r d and patenting activity whilst those firms not receiving subsidies would perform significantly better if they were publicly funded copyright 2007 john wiley sons ltd

determinants of satisfaction for entrepreneurs this study considers the extent to which entrepreneurs are satisfied with their businesses in their third year of business ownership entrepreneurial satisfaction might be viewed as a basic measure of performance it may bear upon decisions by individual entrepreneurs about whether to invest more time and money whether to cut back or whether to close down it may also influence whether entrepreneurs work effectively with their customers and employees for researchers the investigation of why in particular settings some entrepreneurs may be more satisfied than others may aid in the interpretation of past research which has used this as a performance measure this research draws upon a theoretical framework used in investigations of employee satisfaction called discrepancy theory it suggests that individual satisfaction is determined in part by whether there is a gap between actual rewards or performance and the individual s goals or expectations in this research it was hypothesized that entrepreneurs emphasizing primarily noneconomic goals such as doing the work they wanted to do would have higher satisfaction when the business was experiencing lower levels of performance for higher levels of performance there would be no difference in essence the satisfaction of those emphasizing economic goals would vary more with economic performance a related hypothesis was that for this sample of start up firms many of which would be experiencing low levels of performance those emphasizing noneconomic goals would have higher average levels of satisfaction this was based upon the expectation that many start up firms would be experiencing marginal performance so that the gap between goals and performance would be greater for economically oriented entrepreneurs the research also focused upon expectations because one aspect of discrepancy theory suggests that satisfaction decreases if there is a gap between expectations and performance accordingly it was hypothesized that controlling for performance entrepreneurs with higher initial expectations would subsequently have lower levels of satisfaction previous research suggests that membership in particular demographic groups may influence expectations this led to hypotheses that older entrepreneurs female entrepreneurs and minority entrepreneurs would have lower levels of initial expectations this in turn may influence later satisfaction thus it was hypothesized that controlling for performance entrepreneurs in each of these groups would have higher satisfaction because their initial expectations would be lower the study utilized a sample of 287 entrepreneurs who were followed over a 3 year period the data on predictors of satisfaction were gathered in year 1 when the average owner had been in business for 11 months the satisfaction measures were gathered 2 years later by that time there should have been some stabilization in the routines of the business and the entrepreneur could reflect upon historic performance and experiences in judging the extent to which business ownership had been satisfying the data were analyzed primarily using path analysis in which it was hypothesized that certain variables would have both direct and indirect effects upon satisfaction it was found that the satisfaction of entrepreneurs emphasizing economic goals was not more sensitive to economic performance at least within the range of performance considered in this sample for this group of firms many of which appeared to be experiencing marginal performance those emphasizing noneconomic goals did express higher levels of satisfaction it had been expected that those with higher initial expectations would later be less satisfied because they would have a greater expectation performance gap however the opposite was found those who were more optimistic initially were more satisfied later even when controlling for performance demographic influences on initial expectations were examined contrary to expectations none of the demographic traits was significantly related to initial assessment of likelihood of success older entrepreneurs women entrepreneurs and minority entrepreneurs were just as optimistic as those in other groups the relationship between membership in these demographic groups and later satisfaction was also examined no significant relationships were found for older entrepreneurs and minority entrepreneurs however there was some evidence p 07 that women entrepreneurs were more satisfied with business ownership two of the most interesting findings were those related to initial expectations and to women entrepreneurs contrary to discrepancy theory those who had higher initial expectations were later more satisfied not less this may suggest as staw and ross 1985 found in a longitudinal study of employee satisfaction that attitudes are in part a function of stable individual traits those who had a positive view of their initial prospects later viewed the experience of business ownership more favorably regardless of subsequent performance for women entrepreneurs the higher levels of satisfaction may reflect a view that they have fewer attractive alternatives it may also be that they discover greater relative satisfaction from the day to day aspects of business ownership for entrepreneurs and their advisors the findings suggest that particular goals attitudes and backgrounds are likely to be associated with greater satisfaction this may influence whether entrepreneurs stay with marginal businesses for researchers the study provides insight into discrepancy theory by considering its application to entrepreneurs rather than the hired employees normally studied in addition subjective measures of performance such as satisfaction have often been used in previous research on entrepreneurial performance this study casts light on why in particular settings some entrepreneurs may be more satisfied than others

on the sources and significance of interindustry differences in technological opportunities abstract the set of technological opportunities in a given industry is one of the fundamental determinants of technical advance in that line of business we examine the concept of technological opportunity and discuss three categories of sources of those opportunities advances in scientific understanding and technique technological advances originating in other industries and in other private and governmental institutions and feedbacks from an industry s own technological advances data from the yale survey on industrial research and development are used to measure the strength of various sources of technological opportunity and to discern interindustry differences in the importance of these sources we find that interindustry differences in the strength and sources of technological opportunities contribute importantly to explanations of cross industry variation in r d intensity and technological advance

inside the black box of outcome additionality effects of early stage government subsidies on resource accumulation and new venture performance this paper examines the outcome additionality of prestigious early stage government subsidies drawing on arguments from liabilities of newness and certification literatures we develop a mediated model that unpacks the outcome additionality of the subsidy we hypothesize that subsidized new ventures attract more human and financial capital than their non subsidized counterparts because the association with a prestigious government organization signals legitimacy of the new venture such legitimacy is crucial for attracting qualified employees and financiers the effect of the access to human and financial capital in turn has long term and substantial influence on performance whereas the effect of the subsidy itself is marginal and short lived applying a novel matching approach we compare 130 approved applicants of a prestigious government subsidy with a control group of 154 applications rejected at the very last stage thereby overcoming some of the selection and endogeneity biases associated with similar studies the hypothesized model receives strong support by the data these findings have several implications for government support of new ventures as well as scholars in the field

participation inertia in r d tax incentive and subsidy programs we examine how persistent firms participation is in rd the use of tax credits in contrast is unrelated to a firm s productivity our results suggest that r d tax incentives and r d subsidies are not substitutes and that any unintended misallocation of support is likely to persist

cancellable insider trading plans an analysis of sec rule 10b5 1 rule 10b5 1 enables insiders to preplan future trades before becoming informed within a strategic rational expectations equilibrium framework i characterize an insider s unique optimal trading plan which balances portfolio diversification against exploitation of the rule s selective termination option because the rule reduces adverse selection and provides insurance against bad outcomes the rule generally improves welfare for both the insider who later becomes informed and uninformed outsiders provided there exists a sufficient degree of information asymmetry eliminating the rule s selective termination option results in an even greater welfare improvement under a large subset of parametric conditions received march 9 2018 editorial decision january 11 2019 by editor wei jiang

informational feedback adverse selection and optimal disclosure policy faceless trading in a secondary stock market not only redistributes wealth among investors but also generates information that feeds back to real decisions using this observation we re evaluate the leveling the playing field rationale for disclosure to secondary stock markets by partially preempting traders information advantage established from information acquisition disclosure reduces private incentives to acquire information resulting in two opposite effects on firm value on one hand this narrows the information gap between informed and uninformed traders and improves liquidity of firm shares on the other hand this reduces the informational feedback from the stock market to real decisions this tradeoff determines the optimal disclosure policy the model explains why firm value can be higher in an environment that simultaneously promotes disclosure and private information production and why growth firms are endogenously more opaque than value firms

learning and protection of proprietary assets in strategic alliances building relational capital one of the main reasons that firms participate in alliances is to learn know how and capabilities from their alliance partners at the same time firms want to protect themselves from the opportunistic behavior of their partner to retain their own core proprietary assets most research has generally viewed the achievement of these objectives as mutually exclusive in contrast we provide empirical evidence using large sample survey data to show that when firms build relational capital in conjunction with an integrative approach to managing conflict they are able to achieve both objectives simultaneously relational capital based on mutual trust and interaction at the individual level between alliance partners creates a basis for learning and know how transfer across the exchange interface at the same time it curbs opportunistic behavior of alliance partners thus preventing the leakage of critical know how between them copyright 2000 john wiley sons ltd

nonparametric regression techniques in economics this introduction to nonparametric regression emphasizes techniques that might be most accessible and useful to the applied economist the paper begins with a brief overview of the class of models under study and central theoretical issues such as the curse of dimensionality the bias variance trade off and rates of convergence the paper then focuses on kernel and nonparametric least squares estimation of the nonparametric regression model and optimal differencing estimation of the partial linear model constrained estimation and hypothesis testing is also discussed empirical examples include returns to scale in electricity distribution and hedonic pricing of housing attributes

incentive regulatory policies the case of public transit systems in france we assess the empirical relevance of the new theory of regulation using a principal agent framework to study the regulatory schemes used in the french urban transport industry taking the current regulatory schemes as given the model of supply and demand provides estimates for the firms inefficiency the effort of managers and the cost of public funds it allows us to derive the first best and second best regulatory policies for each network and compare them with the actual situation in terms of welfare loss or gain fixed price policies lie between fully informed and uninformed second best schemes cost plus contracts are dominated by any type of second best contract from these results we may conjecture that fixed price contracts call for better informed regulators

public selection and financing of r d cooperative projects credit versus subsidy funding abstract in this article we develop an analytical model of the selection process for r d cooperative projects to study the factors that motivate public project selection and corresponding funding using two different financial instruments subsidies and credits for this purpose we propose a three stage empirical strategy to analyse the differential individual effects of several factors on the decisions taken by the public agency this analysis is based on project level data from cooperative r d project calls under the spanish profit initiative for the period 2000 2003 the main results show that the public agency uses the two financial instruments to address different objectives first some projects close to the market are well supported through credits while basic research projects receive only selective support in the form of subsidies second there is significant diversity in the selection and funding of technological areas third regarding the explicit goal of fostering cooperation the public agency selectively favours partnerships with universities and technology institutes through the award of subsidies however there seems to be less incentive for large consortia fourth there are significant regional differences among financed projects and also our data show sharp yearly fluctuations

complex innovation policy systems towards an evaluation mix abstract the mix of contemporary innovation policies impacting on a given territory are typically characterised by quite different underlying rationales and instruments complexity is further increased by multi level considerations thus policies with different characteristics and from different administrative levels are continually interacting with one another in complex policy systems these interactions significantly complicate the evaluation of individual policies and raise a series of difficult questions around how their respective evaluation processes should interact to facilitate learning around the performance of policy systems this paper contributes with a simplified definition of an innovation policy system as the conjuncture of policy mix and multi level dimensions from which a series of steps are proposed for arriving at an evaluation mix relevant for the specific characteristics of a given policy space these ideas are explored with respect to the case of the basque country region of spain and signal an agenda for further applied policy research

voluntary conversion of convertible securities and the optimal call strategy abstract we provide an explanation of why convertibles are called long after the conversion value exceeds the call price delaying the call benefits the firm if enough investors are expected to delay their voluntary conversions consistent with this theory we document that a substantial number of investors do not voluntarily convert when the common dividend exceeds the convertible s dividend plus its premium over conversion value we find that firms would not have increased common stock returns by switching to the strategy of calling to force conversion as soon as possible surprisingly we find that convertible preferreds frequently sell below conversion value

short term investment and equilibrium multiplicity abstract i study the effects of the heterogeneity of traders horizons in a 2 period nree model where all traders are risk averse owing to risk premia short termism generates multiple equilibria in particular two distinct patterns arise along the low trading intensity equilibrium short termists anticipate a thinner second period market and owing to risk aversion scale back their trades this reduces both risk sharing and information impounding into prices enforcing a high returns volatility low price informativeness equilibrium along the high trading intensity equilibrium the opposite happens and a low volatility high price informativeness equilibrium arises thus in the presence of short term behavior and traders risk aversion periods of high volatility are a signal of poor price informativeness

the effects of human capital interventions on entrepreneurial performance in industrialized countries this paper provides a systematic review of studies on the effects of human capital interventions on entrepreneurial performance in industrialized countries we identify 21 experimental and quasi experimental studies published before september 2018 these studies examine the effects of business training formal education and entrepreneurship education their performance outcomes include firm profits firm size and entrepreneurial earnings the main finding across these studies is that these interventions do not have statistically significant effects formal education is the only exception showing positive effects on firm profits and entrepreneurial earnings yet these effects are small in magnitude evidence is inconclusive regarding effect duration these findings stand in stark contrast to correlational studies which tend to find large positive correlations between human capital interventions and entrepreneurial performance we therefore conclude that correlational studies tend to overestimate the benefits of human capital interventions moreover our estimates show that the interventions are associated with moderately low additionality

equilibrium warrant pricing models and accounting for executive stock options under apb opinion no 25 compensation expense arising from executive stock options consists of the excess of the market value of the stock over the exercise price of the options on their grant dates if the exercise price equals the market value of the stock on the grant date which is typically the case no compensation expense is recognized this accounting treatment has been frequently criticized for its bias toward underestimating the cost of an option to the issuing firm and a number of alternative valuation models have been suggested in the accounting literature by and large these valuation models have been borrowed from the finance literature where they were developed to explain the pricing of warrants and traded options the purpose of this paper is to assess empirically how well two of these valuation models perform in providing estimates of the value of traded securities warrants that are similar in many respects to executive stock options 2 this evidence should help calibrate the magnitude of the errors

who participates in r d subsidy programs the case of spanish manufacturing firms abstract empirical evidence on the effectiveness of r d subsidies to firms has produced mixed results so far one possible explanation is that firms and project selection rules may be quite heterogeneous both across agencies and across industries leading to different outcomes in terms of the induced additional private effort here we focus on the participation stage using a sample of spanish firms we test for differences across agencies and industries our results suggest that firms in the same industry face different hurdles to participate in different agencies programs that participation patterns may reflect a combination of agency goals and that patterns differ across high tech and low tech industries

assessing the effect of public subsidies on firm r d investment a survey this survey examines the empirical literature on the relationship between public r d subsidies and private r d investment over the past five decades the survey reveals a considerable heterogeneity of empirical results that cannot be explained fully by methodological issues we aim to provide further explanations of the possible causes of that heterogeneity in particular we emphasise a set of issues that in our view are critical to understanding the potential effect of public r d subsidies on private r d spending special attention is paid to the dynamic aspects and composition of firm r d the constraints faced by the firm such as financial constraints and the amount and source of public subsidies none of these issues have been investigated in depth we formulate a set of research assumptions to guide future empirical research in this field

issues and perspectives on evaluating manufacturing modernization programs abstract the establishment of a national system of federal state manufacturing modernization centers to serve small and medium sized manufacturing systems is a major experiment in the us the system s rapid expansion has made it impossible to begin with an experimental design that would systematically permit tests of the variables and relationships likely to effect the long term economic effectiveness of these centers or their political and financial stability relatedly many existing evaluation studies and journalistic narratives are marred by serious analytical and empirical flaws it is not too late to attempt to improve practice in future evaluations several areas of expanded evaluation are described including theories of industrial restructuring regional technology infrastructure public management financing evaluation design evaluability assessment firm learning and measurement of benefits and costs in each case evaluation is presented as a means of simultaneously yielding information relevant to formative and summative program level decisions and to hypothesis testing

good disclosure bad disclosure we study the implications of public information in a model where market prices convey information to relevant decision makers and the uctuation of market prices is driven by multiple factors disclosure has a positive direct eect of providing new information and an indirect eect of changing the price informativeness if disclosure is about a variable of which real decision makers are well informed then the indirect eect is also positive so that the direct eect is ampli ed leading to a positive overall eect on real e ciency if disclosure is about a variable that real decision markers care to learn much then the indirect eect is negative and the direct eect is attenuated moreover in markets which aggregate private information eectively the negative indirect eect can dominate so that disclosure can harm real e ciency

absorptive capacity coauthoring behavior and the organization of research in drug discovery we examine the interface between for profit and publicly funded research in pharmaceuticals firms access upstream basic research through investments in absorptive capacity in the form of in house basic research and pro publication internal incentives some firms also maintain extensive connections to the wider scientific community which we measure using data on coauthorship of scientific papers between pharmaceutical company scientists and publicly funded researchers connectedness is significantly correlated with firms internal organization as well as their performance in drug discovery the estimated impact of connectedness on private research productivity implies a substantial return to public investments in basic research

patents as options some estimates of the value of holding european patent stocks in many countries holders of patents must pay an annual renewal fee in order to keep their patents in force this paper uses data on the proportion of patents renewed and the renewal fees faced by post world war ii cohorts of patents in france the united kingdom and germany in conjunction with a model of patent holders renewal decisions to estimate the returns earned from holding patents in these countries since patents are often applied for at a nearly stage in the innovation process the model allows agents to be uncertain about the sequence of returns that will be earned if the patent is kept inforce formally then the paper presents and solves a discrete choice optimal stochastic control model derives the implications of the model on aggregate behaviour and then estimates the parameters of the model from aggregate data the estimates enable a detailed description of the evolution of the distribution of returns earned from holding patents over their life spans and calculations of both the annual returns earned from holding the patents still in force or the patent stocks in the alternative countries and the distribution of the discounted value of returns earned from holding the patents in a cohort this abstract was borrowed from another version of this item

r d subsidies external collaborative breadth differential gains and the role of collaboration experience abstract external collaboration breadth is important for firms to acquire the knowledge needed to innovate in this paper we combine cross sectional and longitudinal data from the spanish panel of technological innovation survey pitec to examine the indirect impact of r d subsidies on firm external collaboration breadth we contribute to understanding of the indirect impacts of r d subsidies by first providing strong evidence of an economically significant average positive impact of r d subsidies on firm external collaboration breadth second our results advance understanding of the differential impacts of r d subsidies by revealing the vast heterogeneity of the impact at the firm level where approximately only half of treated firms experience a positive collaboration impact from r d subsidies while the remainder experience no impact or a negative effect finally we advance understanding of the characteristics explaining the differential impact of r d subsidies on external collaboration breadth by utilising the organisational learning literature to demonstrate the important role of firm collaboration experience

manipulation and the allocational role of prices it is commonly believed that prices in secondary financial markets play an important allocational role because they contain information that facilitates the efficient allocation of resources this paper identifies a limitation inherent in this role of prices it shows that the presence of a feedback effect from the financial market to the real value of a firm creates an incentive for an uninformed trader to sell the firm s stock when this happens the informativeness of the stock price decreases and the beneficial allocational role of the financial market weakens the trader profits from this trading strategy partly because his trading distorts the firm s investment we therefore refer to this strategy as manipulation we show that trading without information is profitable only with sell orders driving a wedge between the allocational implications of buyer and seller initiated speculation and providing justification for restrictions on short sales

sale of price information by exchanges does it promote price discovery exchanges sell both trading services and price information we study how the joint pricing of these products affects price discovery and the distribution of gains from trade in an asset market a wider dissemination of price information reduces pricing errors and the transfer from liquidity traders to speculators this effect reduces the fee that speculators are willing to pay for trading therefore to raise its revenue from trading a for profit exchange optimally charges a high fee for price information so that only a fraction of speculators buy this information as a result price discovery is not as efficient as it would be with free price information this problem is less severe if the exchange must compensate liquidity traders for a fraction of their losses this paper was accepted by wei xiong finance

estimating the benefits of targeted r d subsidies we study the expected welfare effects of targeted r d subsi dies using project level data from finland we model the application and r d investment decisions of firms and the subsidy granting decision of the public agency in charge of the program our model and institutional environment allow us to identify different benefits and costs of the r d subsidy program we find that expected effects of subsidies are very het erogeneous and estimated application costs low on average the social rate of return on targeted subsidies is 30 to 50 but spillover effects of subsidies are smaller than effects on firm profits

behavioural additionality of r d subsidies a learning perspective the use of r d grants as a policy instrument has been motivated by economic arguments of market failure neo classical econometric studies have analysed the additionality of one euro of subsidies on both the investments of companies in the r d process and the output of that r d process more recently behavioural additionality has been launched as a third form of additionality in contrast to input and output additionality behavioural additionality is related to changes in the processes that take place within the firm in this paper we analyse the determinants of the behavioural additionality of r d grants to explain the mechanism through which behavioural additionality is obtained we use organizational learning theory as a guide to formulate our hypotheses hypotheses are tested using a telephone survey of 192 recipients of r d grants provided by the iwt in flanders in 2001 2004 matched to a sample of 84 firms that undertake innovation activities but which had never had a grant bid accepted we find that congenital learning and interorganizational learning lead to increased behavioural additionality however these learning effects decrease with the number of subsidized projects that are undertaken by the company

information based stock trading executive incentives and the principal agent problem we examine the role of information based stock trading in affecting the risk incentive relation by incorporating an endogenous informed trading into an optimal incentive contracting model we analytically show that apart from reducing incentives a greater risk increases the level of information based trading which consequently enhances executive incentives and offsets the negative risk incentive relation we calibrate the model and find that the economic magnitude of this incentive enhancement effect is significant our empirical test using real world executive compensation data lends strong support to the model prediction our results suggest that principals boards of directors should consider underlying stock trading characteristics when structuring executive incentives

internal r d expenditures and external technology sourcing abstract the paper examines the two way relationship between external r d activities and internal r d expenditures on a cross section of flemish r d active companies the analysis extends the classical explanatory variables like size diversification ownership structure and technological opportunities to include the impact of various external sourcing strategies r d cooperation and to a lesser extent r d contracted out are found to have a significant positive effect on internal r d but only if the companies have absorptive capacity in the form of a full time staffed r d department at the same time firms are found to be more frequently engaged in r d cooperation the more they spend on internal r d

demand side vs supply side technology policies hidden treatment and new empirical evidence on the policy mix this paper provides new empirical evidence about the impact of various technological policies upon firms innovative behaviour we take into consideration the role of policies for innovative activities and we focus on their interaction while supply side policies such as r d subsidies and tax credits have been both extensively discussed in the literature and empirically investigated the analysis of innovative public procurement is a growing trend in the literature which still lacks robust empirical evidence in this paper we replicate the existing results on supply side policies surmise fresh empirical evidence on the outcome of innovative public procurement and address the issue of possible interaction among the various tools when controlling for the interaction with other policies supply side subsidies cease to be as effective as reported in previous studies and innovative public procurement seems to be more effective than other tools the preliminary evidence suggests that technology policies exert the highest impact when different policies interact

the effectiveness of r d subsidies a meta regression analysis of the evaluation literature widespread and increasing public subsidy for research and development r d has given rise to a large and growing number of evaluation studies while economic theory identifies market failures that justify public support theory also suggests reasons why returns might be disappointing similarly the empirical literature investigated 52 micro level studies published since 2000 on either input or output r d reports a wide range of findings the lack of conclusiveness both of theory and of the evaluation literature motivate this meta regression analysis mra this study contributes to policy debate by identifying a representative subsidy effect after controlling for publication selection bias and for a wide range of sample and study heterogeneities mra findings reject crowding out of private investment by public subsidy but reveal no evidence of substantial additionality in addition among the research practices explaining the heterogeneous effects reported in this literature those related to the treatment of unobservable firm heterogeneity are particularly important

international r d rivalry and industrial strategy this paper presents a theory of government intervention which provides an explanation for industrial strategy policies such as r d or export subsidies in imperfectly competitive international markets domestic net welfare is improved by the capture of a greater share of the output of rent earning industries although the subsidy ridden noncooperative international equilibrium is jointly suboptimal behaviour of governments and firms is modelled as a three stage subgame perfect nash equilibrium the assumption that the government is the first player in this game allows it to influence equilibrium outcomes by altering the set of credible actions open to firms

innovation procurement as capability building evaluating innovation policies in eight central and eastern european countries abstract after decades of impressive growth the new member states of the european union are once again in transition but this time from imitation to innovation driven competitiveness this paper evaluates the relationship between both public funding and public procurement for innovation ppi and firm level innovation output and outcome additionality in eight central and eastern european countries matching estimates on a sample of 41 623 firms suggest that ppi has a large effect on innovation and output and the highest additionality is sometimes achieved when firms receive both financial support and innovation oriented public procurement we argue that policy makers aiming to strengthen indigenous innovation capabilities should place stronger emphasis on ppi

the role of sunk costs in the decision to invest in r d we present a dynamic empirical model of a firm s r d decisions that is consistent with the existence of sunk r d costs taking into account that these costs may differ between small and large firms and among different technological regimes we estimate a multivariate dynamic discrete choice model using firm level data of spanish manufacturing for 1990 2000 conditional on firm heterogeneity and serially correlated unobservable factors we find that r d history matters this true state dependence allows inferring the existence of sunk r d costs associated with performing r d sunk r d costs are found to be higher for large high tech firms

a comparison of stock market mechanisms i analyze a multi asset market under two trading mechanisms in the first the unrestricted system traders demand for each asset depends on all equilibrium prices and prices reflect the information contained in all order flows in the second the restricted system traders demand depends on the traded asset price and prices reflect single order flow information i show that informed traders use of multidimensional private information depends on the number of prices they observe and on the price formation process i then give conditions rendering the restricted system more efficient than the unrestricted system

cost reducing and demand creating r d with spillovers this article analyzes r d policies when the returns to cost reducing and demand creating r d are imperfectly appropriable and market structure is endogenous we generalize previous characterizations of appropriability to permit the possibility that own and rival r d are imperfect substitutes we also describe how equilibrium expenditures on process and product r d as well as equilibrium market structure depend on technological opportunities and spillovers in contrast to previous work diminished appropriability does not necessarily reduce r d expenditures for example under some conditions an increase in the extent of process product spillovers will lead to an increase in product process r d we estimate several variants of the model by using manufacturing line of business data and data from a survey of r d executives

calls of warrants timing and market reaction this paper examines the timing of and reaction to calls of callable warrants three main findings emerge first unlike convertible bonds or preferred stock callable warrants are called almost as soon as possible second there is a negative price reaction of about 3 percent when a call is announced finally at the completion of a call the stock price rebounds by an average of 7 percent the total reaction from announcement through completion of the call is a positive excess return of about 4 percent since 1980 several hundred firms have issued callable warrants typically these warrants become callable only after a predetermined date and only when the price of the underlying stock exceeds a minimum price for a prespecified number of days if the company then calls warrantholders are allotted a notice period usually 30 days to decide whether to exercise their warrants or accept a nominal call price this paper is the first to study market reaction to calls of warrants and to see if firms delay calls the results indicate that warrants are called almost as soon as exercise can be forced at the announcement of a call stock prices fall about 3 percent however they rebound by about 7 percent around the last day that warrants can be exercised because this date is known in advance this result is not expected in an efficient market the investigation of calls of warrants may provide insights into calls of convertible bonds and preferred stock both calls of warrants and calls of convertibles transfer wealth to stockholders by reducing the life of the other securityholder s options so if management tries to maximize shareholder wealth management s incentive to call warrants may resemble their incentive to call convertible securities 1 however in contrast to the results pre

informed trading investment and welfare this article studies the welfare economics of informed stock market trading we analyze the effect of more informative prices on investment given that this dependence will itself be reflected in equilibrium prices while a higher incidence of informed speculation always increases firm value through a more informative trading process the effect on agents welfare depends on how revelation of information changes risk sharing opportunities in the market greater revelation of information that agents wish to insure against reduces their hedging opportunities on the other hand early revelation of information that is uncorrelated with hedging needs allows agents to construct better hedges