an earnings prediction approach to examining intercompany information transfers abstract we assess potential information transfers by examining the association between the earnings announcements of early and late announcers in an industry our earnings prediction models are statistically significant much more frequently than would be expected by chance the models suggest potential positive information transfers on average but there is substantial cross industry variation in the strength of this relation we find that the greatest price reactions by nonannouncers to same industry earnings announcements occur in industries with the greatest earnings comovement

unexpected earnings and intraindustry information transfers further evidence this paper provides evidence on the association between unexpected quarterly earnings information and the contemporaneous stock price behavior of announcing and nonannouncing firms in the same industry prior research provides evidence consistent with a positive sign and magnitude relation between the unsystematic stock returns of announcing and nonannouncing firms at earnings release dates i e information transfers foster 1981 and clinch and sinclair 1987 as these studies emphasize however such an association may arise from misspecification of the stock return generating process to address this issue we use unexpected earnings not announcing firms unsystematic stock returns in tests of information transfers evidence consistent with information transfers when unexpected earnings are used as a proxy for the informativeness of earnings would reduce the likelihood of information transfers attributable to returns model misspecification and would support the hypothesis that unexpected earnings and not some unspecified information item drive information transfers at earnings release dates we find a positive sign and magnitude relation between the contemporaneous unsystematic stock returns of announcing and nonannouncing firms at earnings release dates and between unexpected earnings of announcing firms and unsystematic stock returns of nonannouncing

do product innovation and news about the r d process produce large price changes and overreaction the case of pharmaceutical stock prices do extreme price changes of pharmaceutical stocks reflect unexpected scientific information produced during the drug rd i e food and drug administration fda approvals in 6 of these cases news of a scientific nature in

the volume outcome effect scale economies and learning by doing there is a large empirical literature documenting the existence of a positive correlation between the number of times a hospital performs a given surgical procedure and the rate of good health outcomes achieved by patients at that hospital receiving that procedure typically it is found that mortality is lower in hospitals that perform more of a given procedure this result has been found for a wide variety of different procedures time periods and locations david m shahian and sharon l normand 2001 john d birkmeyer et al 2002 ethan a halm 2002 the two leading explanations for this correlation are the practice makes perfect and selective referral effects harold s luft et al 1987 in the practice makes perfect hypothesis either learning by doing or qualityenhancing scale economies cause large hospitals to provide better quality care improving outcomes in the selective referral hypothesis hospitals with higher quality attract greater demand and therefore have a greater volume of patients the direction of causality matters for policy if volume causes outcome then policies supporting centralization of procedures in a few facilities may make sense hospitals that specialize in treating one or a few conditions may have the benefit of producing better outcomes antitrust analysis of hospital mergers should probably consider any improved outcomes when evaluating the impact of the merger if on the other hand causality runs from outcomes to volumes then these issues are no longer relevant two recent papers have employed instrumentalvariables techniques using newly developed instruments to address this question both find that the direction of causation largely runs from volume to outcome gaynor et al 2004 gautam gowrisankaran et al 2004 these papers use instruments that exploit the geographical distribution of patients and hospitals and the well established fact that patients strongly prefer hospitals closer to their homes see gaynor and vogt 2000 for a review if the causation runs from volume to outcome then it also matters for policy whether the causation is mediated through a static scale economy in which today s volume affects today s outcome or via a learning by doing effect in which today s volume affects both today s outcome and future outcomes in the static story it matters less at which hospital volume is concentrated high volume at any hospital will generate good outcomes in the learning by doing story it matters more shifting volume from one hospital to another will involve stranding the experience built up at the hospital losing volume thus the benefits of the concentration of volume in one hospital would develop over time reducing the net benefit this would tend to make new specialty hospitals mergers or regulatory approaches that result in consolidation of volume in one hospital less attractive than they would be in the static story discussants paul gertler university of california berkeley dana goldman rand corporation patricia anderson dartmouth college

the use of control groups in capital market research capital market researchers have used several different types of control groups in attempting to assess stock market reactions to accounting events in recent years the properties of various control groups have been examined to determine the sensitivity of experimental results to a particular control group gonedes 1975 1978 foster 1980 brown and warner 1980 beaver 1981 except for the brown and warner study these studies have been of an analytical nature the purpose of this study was to extend the brown and warner analysis to four alternative control groups using a particular accounting event study as an example the example involved an assessment of whether the stock market reacted to actual changes in accounting estimates the four types of control groups examined were those which have been used in previous capital market studies see section 3 one of brown and warner s main conclusions was that beyond a simple one factor market model there is no evidence that more complicated methodologies such as risk equivalent control portfolios convey any benefit our results which are based on a market setting typical of many information content studies lead to a potentially different conclusion brown and warner injected simulated market effects into randomized data and by replicating their analyses 250 times they were able to

discussion of voluntary disclosure choice and earnings information transfer pownall and waymire s paper prompted a general discussion of information transfer research particularly its motivation and methodology this summary begins with a brief introduction to information transfer research it then considers motivation and methodology since the discussion related both to pownall and waymire s research specifically and to information transfer research generally these discussion comments extend to both as well

evaluating natural resource investments notwithstanding impressive advances in the theory of finance over the past 2 decades practical procedures for capital budgeting have evolved only slowly the standard technique which has remained unchanged in essentials since it was originally proposed see dean 1951 bierman and smidt 1960 derives from a simple adaptation of the fisher 1907 model of valuation under certainty under this technique expected cash flows from an investment project are discounted at a rate deemed appropriate to their risk and the resulting present value is compared with the cost of the project this standard textbook technique reflects modern theoretical developments only insofar as estimates of the discount rate may be obtained from crude application of single period asset pricing theory but see brennan 1973 bogue and roll 1974 turnbull 1977 constantinides 1978 the inadequacy of this approach to capital budgeting is widely acknowledged although not widely discussed its obvious deficiency is its the evaluation of mining and other natural resource projects is made particularly difficult by the high degree of uncertainty attaching to output prices it is shown that the techniques of continuous time arbitrage and stochastic control theory may be used not only to value such projects but also to determine the optimal policies for developing managing and abandoning them the approach may be adapted to a wide variety of contexts outside the natural resource sector where uncertainty about future project revenues is a paramount concern

estimation risk and stability of optimal portfolio composition abstract the mean variance portfolio models indicate that for optimal investment decisions the true ex ante values of the model parameters should be used instead in practice ex post parameter estimates are used if in the estimation process the probability distribution of estimators is not known there is a problem of estimation risk this paper investigates the impact of estimation risk on the composition of optimal portfolios as the multivariance distribution of the vector of optimal portfolio weights allocated to risky assets is analytically intractable a use of the monte carlo simulation experimental is made this study suggests that the composition of optimal portfolio is relatively more stable when the estimates of model parameters are obtained from longer series of historical observations or the expected portfolio return is low

a comparison of event study methodologies using daily stock returns a simulation approach accounting research studies commonly use measures of abnormal security returns to test hypotheses about accounting information and policies alternative methods are used in these studies to detect abnormal performance and thereby examine the information content of identified events the ability of these methods to detect abnormal returns using simulation techniques is examined by brown and warner 1980 1984 morse 1984 addresses this issue analytically the analytical approach presumes that the event study data is generated by the process modeled while the simulation approach uses the security return data generated by the market simulation provides a tractable means of dealing with situations where an analytical approach may yield results suggesting direction but not magnitude or where such techniques are unusually cumbersome both limitations face us in this study brown and warner 1980 use monthly data to examine the comparative abilities of several combinations of return generating models and

default premiums in commodity markets theory and evidence we model the effect of nonperformance risk on forward and futures pricing and look for evidence of nonperformance risk in precious metals futures prices from the hunt brothers episode changes in default premiums are measured and related to the sequence of events in the metals markets during this period results suggest first that ex ante costs of nonperformance can be a significant priced factor in commodity markets and second that the arrival of new information is often associated with changes in these costs the evidence has implications for both theoretical and empirical research on commodity markets organized commodity markets offer traders an efficient medium in which to execute their hedging and speculative strategies in particular the markets have developed mechanisms that reduce the costs of nonperformance which would be substantial in the absence of an organized exchange devices such as margin requirements position limits daily marking to market price limit moves and the clearinghouse reduce the expected costs of distress and default in commodity markets while organized exchanges greatly reduce expected costs of nonperformance they do not eliminate such costs throughout the history of organized futures trading there have been many instances of markets collapsing or coming to the brink of collapse after a period of unusual trading activity the most prominent example in recent times is the near collapse of the new

a theory of disclosure in speculative markets this paper presents a theory of disclosure in a market where investors have heterogeneous beliefs and face short sale constraints assets trade above fundamentals reflecting the value of the option to sell to more optimistic investors in the future the initial seller has an incentive to commit to an imprecise disclosure policy despite the negative effect this has on the fundamental value of the asset in order to increase the potential for disagreement and hence the magnitude of the speculative premium i show that there is a strategic complementarity between sellers in their disclosure decisions this explains why financial misreporting and episodes of speculation occur together in waves and demonstrates that the endogenous choice of imprecise disclosure amplifies the extent to which assets are overpriced this paper was accepted by amit seru finance

market based empirical research in accounting a review interpretation and extension a decade and a half of the most concerted and ambitious research effort in accounting history is evaluated here it is the search into the relationship between publicly disclosed accounting information and the consequences of the use of this information by the major group of usersequity investors as such consequences are reflected in characteristics of common stocks traded in major exchanges this research effort known as market based accounting research mbar obtained its impetus from major developments in finance theory during the late 1950s and early 1960s these were the portfolio selection theory and its offspring the capital asset pricing model capm and the concept of informationally efficient capital markets ecm subsequent developments in information economics agency theory and optimal incentive signaling models were quickly incorporated into mbar while the impetus to this line of research came from other disciplines accounting was not only a beneficiary but also to a modest extent a benefactor mbar is relevant to the study of capital market efficiency the capm information economics and regulation this contribution distinguishes mbar from most accounting areas whose contributions to other disciplines are negligible in

arbitrage continuous trading and margin requirements this paper studies the impact that margin requirements have on both the existence of arbitrage opportunities and the valuation of call options in the context of the blackscholes economy margin restrictions are shown to exclude continuous trading arbitrage opportunities and with two additional hypotheses still to allow the black scholes call model to apply the black scholes economy consists of a continuously traded stock with a price process that follows a geometric brownian motion and a continuously traded bond with a price process that is deterministic continuous trading security market models constitute a significant area of continuing reesearch in financial economics these models form the basis of the option pricing methodology see merton 16 for a review and current intertemporal asset pricing models see merton 15 breeden 3 and cox ingersoll and ross 5 given the importance of these models it is of no surprise that there has been significant academic concern see dybvig 9 cox ingersoll and ross 4 p 341 and ingersoll 13 pp 13 25 over the discovery of a continuous trading strategy by harrison and kreps 10 called the doubling strategy that generates a sure dollar from a zero investment the existence of this doubling strategy violates a basic premise of the option pricing methodology the premise of no arbitrage opportunities given this violation the question naturally arises as to whether the option pricing methodology is internally consistent fortunately harrison and pliska 11 showed that the exclusion of arbitrage opportunities and the doubling strategy does not invalidate the familiar derivation of the black scholes call option formula the exogenous exclusion of these doubling strategies is somewhat arbitrary however types of constraints that exclude continuous trading arbitrage opportunities were studied by kreps 14 harrison and kreps 10 and dybvig 9 these papers provide constraints that are unsatisfactory from an institutional point of view since they have no market analogue margin requirements on the other hand have a market analogue one purpose of this paper is to show that margin requirements also exclude continuous trading arbitrage opportunities to make this argument self contained we first provide a unified framework that synthesizes the previously stated results our assertion concerning margin re

evaluating relative benefits of different types of r d for clean energy technologies clean energy technologies that cost more than fossil fuel technologies require support through research and development r d learning by doing relates historical cost decreases to accumulation of experience a learning investment is the amount of subsidy that is required to reach cost parity between a new technology and a conventional technology we use learning investments to compare the relative impacts of two stylized types of r d we define curve following r d to be r d that lowers costs by producing knowledge that would have otherwise been gained through learning by doing we define curve shifting r d to be r d that lowers costs by producing innovations that would not have occurred through learning by doing we show that if an equal investment in curve following or curve shifting r d would produce the same reduction in cost the curve shifting r d would be more effective at reducing the learning investment needed to make the technology competitive the relative benefit of curve shifting over curve following r d is greater with a high starting cost and low learning rate our analysis suggests that other things equal investments in curve shifting r d have large benefits relative to curve following r d in setting research policy governments should consider the greater benefits of cost reductions brought about by transformational rather than incremental change

scoring on the stock exchange the effect of football matches on stock market returns an event study we analyse the effect of results of football matches on the stock market performance of football teams we analyse 1274 matches of eight teams in the national and european competition during 2000 2004 we find that the stock market response is significant and positive for victories and negative for defeats the response is significantly stronger in the case of defeat the response is stronger for matches in the european competition than for those in the national competition unexpected results have a stronger impact for european matches than expected ones but this is not the case in the national competition

the valuation of sequential exchange opportunities sequential exchange opportunities are valued using the techniques of modern option pricing theory the vehicle for analysis is the concept of a compound exchange option this security is shown to exist implicitly in several contractual settings a valuation formula for this option is derived the formula is shown to generalize much previous work in option pricing several applications of the formula are presented

corporate financial policy and corporate control abstract this paper presents evidence that stockholder wealth declines on average when managers respond to attempted hostile takeovers with defensive changes in asset and ownership structure the data also indicate that these corporate restructurings are typically quite large and that many are attempts by managers to create barriers specific to the hostile bidder and or to consolidate a block of voting securities in the hands of management allies the evidence suggests that defensive motives whether beneficial or harmful influence corporate asset and ownership structure

mitigating contagion risk by investing in the safety of rivals abstract firms often benefit when an unfavorable event befalls a rival usually through a shift in demand but sometimes negative especially catastrophic events adversely affect an entire industry we refer to such phenomena as contagion and note that each firm faces not only its own direct risks but also the contagion risks imposed by rivals who for example avoid strong safety measures because investment cost exceeds expected loss the conclusion of this paper is that in the extreme case low risk firms may benefit from investing in safety improvements for their higher risk rivals for example a firm that over complies with safety requirements may benefit from investing in safety improvements in a rival that complies with regulations at a minimal level this research explores conditions under which such a contagion risk mitigation strategy is profitable our findings indicate that for a low risk firm there is a threshold above which such an investment would be profitable in a market where price sensitivity to a rival s safety is close to zero a low risk firm can decrease this threshold by extending the investment horizon the investment is less likely to pay off when firms compete on quantity as opposed to price we also show that below a threshold market price a third firm that is neutral neither needs investment nor invests may be put at a cost disadvantage when this contagion risk mitigation strategy is implemented

the time varying nairu and its implications for economic policy the nairu the unemployment rate consistent with a constant rate of inflation is estimated in this paper as a parameter allowed to vary over time value is determined in an econometric model where the inflation rate depends on its past values demand and supply shocks the nairu estimated for the gdp deflator varies over the past forty years within 5 4 to 6 5 percent its estimated value for the most recent quarter 1996 q2 is 5 6 percent the nairu has declined in recent years in response to global competition immigration other factors weakening labor s bargaining position and the rapidly declining prices of computers and other electronics

contagion effects in the electric utility industry following the fukushima nuclear accident this article examines intra industry information transfers in the european and japanese electric industry in the wake of the fukushima nuclear accident for european conventional utilities the downward price drift is relatively small and transient in nature yet we find positive and lingering effects of the accident on the shares of alternative electric utilities japanese utilities were hit the hardest and the shock seems to be long lasting an interesting finding of this article is the abrupt increase decrease in the systematic risk of conventional alternative electric utilities following the event in europe we could only document a decrease in the idiosyncratic risk of conventional utilities pointing to enhanced return synchronicity in the conventional power industry in turn total risk seems to be stationary around the accident in rebuttal idiosyncratic and systematic risks and consequently total risk have substantially risen in japan since the event finally intercept values related to

the impact of sfas no 8 on equity prices of early and late adopting firms abstract this study examines the economic consequences of statement of financial accounting standards no 8 sfas no 8 compared to a matched control group both early adopters and late adopters of sfas no 8 exhibited significantly negative excess returns in the exposure draft release period even after adjusting for a size effect in january weighted least squares and ordinary least squares cross sectional regressions were compared the late adopter regressions weakly support contracting and political cost theories

risk futures pricing and the organization of production in commodity markets this paper examines equilibrium in a spot and futures market with both primary producers growers and intermediate producers processors for a commodity that is subject to output shocks processors tend to hedge long in contrast with hick s theory of futures hedging nevertheless if transaction costs are low the two stage production process brings about a downward futures price bias consistent with hick s pricing prediction but if costs of trading futures are high growers tend to be differentially driven from the futures market reversing the direction of the bias futures trading may also affect the organization of industry when demand is inelastic futures trading can serve as a substitute for vertical integration as a means of diversifying risk because the risk positions of growers are complementary with those of processors

clearing and settlement during the crash this article is a reexamination of the clearing and settlement process in financial markets particularly the futures market and its performance during the 1987 stock market crash it provides both some institutional background and some conceptual perspective on the problems faced by the system during the week of october 19 much of the discussion is based on the useful analogies that can be drawn between the clearing house and other financial intermediaries such as banks and insurance companies a major conclusion is that the federal reserve played a vital rob in protecting the integrity of the clearing and settlements system during the crash

market assessment of industry and firm earnings information abstract this study examines the timing of security returns associated with industry wide earnings and firm specific earnings we predict and find that returns associated with differences in performance across industries begin and end earlier than returns associated with differences in firm specific performance within industries to earn abnormal profits a trading strategy based on forecasts of future earnings would require earlier predictions of industry wide earnings than of firm specific earnings

aspiration level effects an empirical investigation abstract theories of aspiration level effects predict that decisions under uncertainty will depend on whether performance is above or below some target level of performance a sample of 5000 quarterly earnings announcements by publicity held companies listed on the compustat and crsp data bases is examined to test this hypothesis four models from the current accounting literature are used as alternative estimates of the target level of earnings for these firms when earnings are announced the difference between actual and forecast earnings here called a forecast error can be computed the data indicate that the relationship between valuation and forecast error differs conditional on the sign of the forecast error

invited remarks ball and brown 1968 it is a great honor for me to be at this conference and speaking to you today nick dopuch was not all that explicit when it came to a topic for this last session nick said talk about anything you like i interpreted that to mean i should talk in general terms about my early work with ray ball and its influence on the accounting literature and in particular about a paper we wrote about 20 years ago which is now commonly referred to simply as ball and brown 1968 i begin by covering the paper itself the antecedent conditions why the paper was written what we attempted to do in the paper and what was novel as far as we were concerned next i give my view of the main strands in the accounting literature since 1968 that are related to our work i conclude by offering a few thoughts on directions that the capitalmarkets based accounting literature might take in the years ahead

relation between market model prediction errors and omitted variables a methodological note a number of accounting studies have examined market model prediction errors to evaluate the share price effects of various events such as voluntary or mandatory accounting changes a common approach is to examine the prediction errors around the event date of a portfolio of potentially affected firms this approach has been extended recently through the use of cross sectional regressions e g leftwich 1981 holthausen 1981 collins rozeff and dhaliwal 1981 sepe 1982 and chow 1983 in which prediction errors or raw returns are regressed on firm specific variables such as size the purpose of this paper is to examine the implications of some recent findings in finance for the various finance based empirical accounting studies in general two types of omitted variables from the standard capital assets pricing model have been identified first several studies have reported that certain firm specific variables such as size banz 1981 and reinganum 1981 earnings yield basu 1975 1983 and dividend payout ratio litzenberger and ramaswamy 1979 may be omitted variables from the standard capm in addition other studies have found some special time series characteristics of stock returns such

a continuous time equilibrium model of forward prices and futures prices in a multigood economy abstract this paper is a theoretical investigation of equilibrium forward and futures prices we construct a rational expectations model in continuous time of a multigood identical consumer economy with constant stochastic returns to scale production using this model we find three main results first we find formulas for equilibrium forward futures discount bond commodity bond and commodity option prices second we show that a futures price is actually a forward price for the delivery of a random number of units of a good the random number is the return earned from continuous reinvestment in instantaneously riskless bonds until maturity of the futures contract third we find and interpret conditions under which normal backwardation or contango is found in forward or futures prices these conditions reflect the usefulness of forward and futures contracts as consumption hedges

rational expectations and risk premia in forward markets primary metals at the london metals exchange this paper tests whether forward prices equal the traders expectations of the future spot prices at maturity under two different models of expectations formation full information rational expectations and incomplete information mechanical forecasting rule the tests are performed over the period january 1970 through september 1980 on the forward markets for the primary metals copper tin lead and zinc traded in the london metals exchange we find evidence consistent with the existence of time varying risk premia the way in which traders form expectations about future price is of great interest to economists as well as to market participants and forward prices have often been used as indicators of these otherwise unobservable expectations forward prices however include not only the expectation of future spot prices but also a component reflecting the riskiness of the contract therefore the risk premium can be defined as the difference between the forward price and the expected future spot at the maturity date of the forward contract there is a longstanding debate on the nature of this risk premium the hickskeynes view2 is that in futures markets speculators provide insurance against the risk of fluctuations in the price of the spot commodity and hedgers pay a premium for this risk transfer in the way of a forward price that is higher than the expected spot price in other words the risk premium should be positive 3 hardy 11 has suggested however that a future market is merely a casino in which speculators can participate in a legalized form of gambling for this privilege they have to pay a price in the form of a negative expected return thus resulting in a negative risk premium 4

the price ain t right hospital prices and health spending on the privately insured we use insurance claims data for 27 6 percent of individuals with private employer sponsored insurance in the us between 2007 and 2011 to examine the variation in health spending and in hospitals transaction prices we document the variation in hospital prices within and across geographic areas examine how hospital prices influence the variation in health spending on the privately insured and analyze the factors associated with hospital price variation four key findings emerge first health care spending per privately insured beneficiary varies by a factor of three across the 306 hospital referral regions hrrs in the us moreover the correlation between total spending per privately insured beneficiary and total spending per medicare beneficiary across hrrs is only 0 14 second variation in providers transaction prices across hrrs is the primary driver of spending variation for the privately insured whereas variation in the quantity of care provided across hrrs is the primary driver of medicare spending variation consequently extrapolating lessons on health spending from medicare to the privately insured must be done with caution third we document large dispersion in overall inpatient hospital prices and in prices for seven relatively homogenous procedures for example hospital prices for lower limb mris vary by a factor of twelve across the nation and on average two fold within hrrs finally hospital prices are positively associated with indicators of hospital market power even after conditioning on many demand and cost factors hospital prices in monopoly markets are 15 3 percent higher than those in markets with four or more hospitals

the political economy of the pharmaceutical industry e conomicsis a practical science since its inception as an independent discipline it has probed the major policy issues of the day the topics that aroused the interests of its practitioners have generally been those that presented government officials with critical choices the modern literature on the economics of the pharmaceutical industry is no exception this body of material originated with the investigations of the kefauver committee in late 1959 public interest was aroused by the spectacle of confrontation between committee and industry the record made by this committee and its successors grew to tens of thousands of pages as claims and counterclaims were offered regarding industry conduct and performance the primary line of attack concerned pharmaceutical prices and profits the committee demonstrated that prices generally exceeded direct costs of manufacturing for 22 major pharmaceutical firms in 1958 costs of goods sold were merely 32 percent of total sales u s senate report 1961 p 31 the committee argued that this fact alone demonstrated the presence of monopoly power while the substantial difference between revenues and production costs permitted high expenditures on research and development it also paid for even higher selling outlays moreover reported rates of return after taxes during this period on the order of 21 to 22 percent exceeded twice the average for all manufacturing the industry replied that on the contrary prices were low relative to the value afforded consumers and high returns on successful products were required to balance the losses from the large numbers of unsuccessful ones the relevant concept of marginal costs according to the industry position must include the costs of developing and marketing new products and therefore prices were not excessive at all although it admitted earning substantial profits the industry argued that without these returns research outlays would be limited and the number of new drugs reduced the committee countered that little of social value arose from industry research molecules were manipulated and the new drugs that resulted were therapeutically similar to those already on the market indeed it suggested that much

commodity own rates real interest rates and money supply announcements abstract this paper develops a measure of the real interest rate that is based on commodity own rates the rate at which one can contract to exchange units of a commodity today for units of the commodity in the future we use this measure to study the impact of money supply announcements on the real interest rate we find that money shocks have little effect on one and three month real interest rates however there is a strong positive relation between money shocks and six and twelve month real interest rates

the phillips curve regime switching and the nairu abstract this paper explores the impact of nonlinearities in the phillips curve and its representation by means of a regime switching model on the meaning and the usefulness of the nairu by implementing a regime switching model that can endogenously generate fluctuations in inflation and in the rate of unemployment we conclude that the nairu is not necessarily a single value is not necessarily reachable and is very difficult to measure the model yields a neutral rate which is more an interval of values than a precise number furthermore by postulating dynamic interdependence between real and monetary aspects the model weakens the theoretical basis of the nairu concept itself

econometric properties of alternative security return methods in recent years security price research has experienced a proliferation of research designs as a result there is a lack of interstudy comparability which is aggravated by the absence of a formal analysis of the properties of the alternative designs under various conditions the purpose here is to examine one important aspect of research design the choice of the security return measure in a simple but well defined setting of limited parameter uncertainty the analysis leads to the following results 1 with respect to raw returns versus residual returns it explicitly offers three potential rationales for residual returns as such the analysis provides a formal statement of the reasons for residual analyses to supplement the intuitive but less precise statements in the early literature 2 with respect to residual return versus difference in returns methods the analysis indicates the conditions under which a the residual approach dominates the difference in returns approach as judged by the statistical criteria examined b the converse holds and c the two methods possess the same econometric properties 3 the relative properties described in 2 are derived for a general model of nonzero covariation among returns and for two important special cases the zero beta model and the industry effects model

an analysis of the impact of deposit rate ceilings on the market values of thrift institutions this paper examines the impact of changes in deposit interest rate regulations on the common stock values of savings and loan institutions the analysis indicates that stockholder owned savings and loans s l s have experienced statistically significant declines in equity market values at the announcement of the removal of ceilings on certain consumer small saver certificate accounts and the introduction of short term variable rate money market certificates we find the evidence to be consistent with the hypothesis that s l s have earned economic rents from restrictions on interest rates paid to small saver accounts and that relaxation of interest rate ceilings has reduced these rents a central issue in the economics of regulation is whether regulators behave in a way that primarily benefits the economic agents whose actions they are supposed to regulate the proposition that regulation is demanded and acquired by the regulated and that regulations are designed and administered primarily for their benefit was originally put forth by stigler 19 and has come to be known as the capture theory of regulation an alternative view is that regulators adopt policies which serve some other perhaps public or possibly the regulators own interest and that administration of these policies does not benefit the regulated entities this paper examines the regulation of savings and loan associations deposit interest rates and reports evidence pertaining to the impact of the administration of regulation regulation of interest rates paid to depositors in federally insured savings and loan associations began in 1966 since that time several changes in the maximum allowed interest rates deposit rate ceilings have been made these changes present an opportunity to observe the impact of one form of regulatory action on savings and loan institutions deposit rate regulation has been the subject of extensive previous research the empirical investigations have focused primarily on two issues 1 the allocational efficiency and wealth redistribution effects of rate ceilings and 2 the impact of deposit rate ceilings on the flow of funds into the residential

the corporate social responsibility of pharmaceutical product recalls an empirical examination of u s and u k markets the pressure on companies to practice corporate social responsibility csr has gained momentum in recent times as a means of sustaining competitive advantage in business the pharmaceutical industry has been acutely affected by this trend while pharmaceutical product recalls have become rampant and increased dramatically in recent years no comprehensive study has been conducted to study the effects of announcements of recalls on the shareholder returns of pharmaceutical companies as product recalls could significantly damage a company s reputation profitability and brand integrity this paper investigates the effect on shareholder wealth and the extent to which the adoption of csr practices by pharmaceutical companies in the united kingdom u k and the united states u s the two largest markets for pharmaceutical products in the world affected market reactions surrounding product recall announcements the analysis of product recall announcements from 1998 to 2004 compiled from the pharmaceutical journal and u s food and drug administration enforcement reports revealed marked differences in the way market participants in the two countries responded to news of product recalls u s investors penalised firms according to the severity of product defects while u k investors were indifferent while u k investors rewarded product recalls by firms which were not usually csr active u s investors punished non csr active firms that performed recalls these observations could pose strategic challenges to pharmaceutical firms operating in both countries

auditor reputation the impact of critical reports issued by government inspectors in recent years u k department of trade investigations into the affairs of a specific company have sometimes been critical of the work done by its auditors and reporting accountants this article assesses the impact of this criticism on the auditor s reputation in particular it examines the stock price performance of the auditor s listed clients the results show a small wealth loss for the audit clients the article also examines the impact of the department of trade criticism on an audit firm s number of listed clients and its future audit fees compared to a control group the criticized auditors appear to suffer a small loss in market share based on number of listed clients and on audit fees the evidence suggests that criticized auditors incurred economic losses from the damage to their reputations this is consistent with models of reputation advanced in the industrial organization literature

the effect of poison pill securities on shareholder wealth abstract this paper examines empirical evidence about the effect of poison pill takeover defenses on shareholder wealth i find evidence that announcements of the most restrictive forms of the pill defense are associated with stock price declines also the most restrictive forms of the pill defense are associated with abnormally high rates of defeat of unsolicited tender offers although this evidence is consistent with managerial entrenchment the evidence implies that on average poison pill defenses have seemingly had only a modest effect on firm valuation

testing the nairu model for the united states this paper tests using u s data the dynamics implied by the nairu view of the relationship between inflation and the unemployment rate the results are somewhat sensitive to the measure of inflation used but they generally reject the dynamics an alternative way of thinking about the relationship between inflation and the unemployment rate is suggested

the nairu unemployment and monetary policy this paper examines the precision of conventional estimates of the nairu and the role of the nairu and unemployment in forecasting inflation the authors find that although there is a clear empirical phillips relation the nairu is imprecisely estimated forecasts of inflation are insensitive to the nairu and there are other leading indicators of inflation that are at least as good as unemployment this suggests deemphasizing the nairu in public discourse about monetary policy and instead drawing on a richer variety of leading indicators of inflation

hospital competition and quality with regulated prices we analyse the effect of competition on quality in hospital markets with regulated prices considering the effect of both introducing competition monopoly versus competition and increasing competition through either lower transportation costs increased substitutability or a higher number of hospitals with semi altruistic providers and a fairly general cost structure we show that the relationship between competition and quality is generally ambiguous in contrast to the received body of theoretical literature this is consistent with and potentially explains the mixed empirical evidence

managers earnings forecasts and intra industry information transfers abstract the effect that voluntarily disclosed managers earnings forecasts have on the security prices of the announcing firms and other firms in the same industry is examined the results are consistent with information content in managers forecasts and with information transfer between forecast firms and other firms in the industry these inferences are drawn from firms abnormal returns computed from single and two index pricing models where the latter includes market and industry indexes interestingly while a positive information transfer is evident with market model residuals once industry cross sectional covariation in firms returns is removed no directional relation is apparent

a theory of price limits in futures markets abstract the existence of price limits in certain futures markets is explained by demonstrating that price limits may act as a partial substitute for margin requirements in ensuring contract performance their effectiveness is a decreasing function of the amount of information available to traders about the equilibrium futures price which is unobservable in the event of a limit move and the theory predicts that no limits will exist in the markets for financial futures actual limits are broadly consistent with the theory his interpretation plausible as it was was totally misleading with the dangerous verisimilitude of a theory which will fit all or nearly all the facts and yet more entirely miss the truth by a mere accident then would a frank perplexity heritage v sackville west

environmental disclosures regulatory costs and changes in firm value abstract union carbide s chemical leak in bhopal india during december 1984 resulted in approximately 4 000 deaths and 200 000 injuries this study examines the market reaction of chemical firms other than union carbide to this catastrophe evidence indicates that a significant negative intra industry reaction occurred however firms with more extensive environmental disclosures in their financial report prior to the chemical leak experienced a less negative reaction than firms with less extensive disclosures this result suggests that investors interpreted such disclosures as a positive sign of the firm managing its exposure to future regulatory costs

mandated social disclosure an analysis of the response to the california transparency in supply chains act of 2010 in this study we examine investor and firm response to the california transparency in supply chains act ctsca of 2010 the ctsca requires large retail and manufacturing firms to disclose efforts to eradicate slavery and human trafficking from their supply chains and is a rare example of mandated corporate social responsibility disclosure based on a sample of 105 retail companies subject to the ctsca we find a significant negative market reaction to the passing of the ctsca furthermore we find that the reaction is significantly more negative for larger firms and companies facing greater supply chain risks apparel and footwear retailers suggesting that investors place a negative value on exposure to legitimacy threats in the social domain with respect to company disclosure response we document relatively high compliance with the legislation although we also find that the disclosure response appeared to be more symbolic than substantive in nature finally our analysis indicates that both disclosure choice and disclosure extensiveness were significantly higher for the high supply chain risk companies suggesting that the response was influenced by concerns with strategic legitimation overall the limited quality of disclosure suggests that without additional rules and guidance mandates alone may not lead to meaningful social disclosure

the intra industry effects of going private transactions we demonstrate that bids to take firms private generate significantly positive valuation effects for industry rivals of target firms these valuation effects cannot reflect either synergy or monopoly since no consolidation of operating firms is involved in such transactions participation by buyout specialists in the bid does not significantly affect these gains bids by outsiders and bids by incumbent managers generate similar valuation effects for industry rivals the effect on share prices of industry rivals is inversely related to the capitalized values of rival firms relative to the target firm we also report valuation effects for target firms we examine the implications of going private bids for the valuation of horizontal rivals of target firms we hypothesize that going private transactions reflect in part private information held by the bidder about the target firm we argue that if the financial market perceives that elements of this private information are industry wide rather than firm specific the value of the target firm s horizontal rivals should change in response to the goingprivate bid announcement 1 unlike interfirm mergers and acquisitions going private transactions do not involve a consolidation of separate operating firms consequently changes in the value of rival firms induced by goingprivate bids are due neither to the demonstration of synergies associated with a consolidation of operating firms nor to the effects of induced monopoly or collusion 2 we also report valuation effects on target firms we find that announcements of going private bids generate statistically significant positive intra industry effects industry rivals of targets of goingprivate bids receive a positive 2 day average excess return of 1 32 which is statistically significant the average 2 day excess return to target firms is 17 35 and is statistically significant we test whether participation of

the effect of three mile island on electric utility stock prices a note the impact of events on the time series properties of common stock returns has been the subject of numerous articles in the finance literature most studies have shown that capital markets are highly efficient in the sense that prices quickly adjust to publicly available information as investors act to receive a return commensurate with the level of perceived risk this note examines the effect on the stock returns of public utility firms of the three mile island tmi nuclear accident in stock valuation models based on investor rationality permanent price declines are brought about either by a decline in expected cash flows or by an increase in the rate used to discount future cash flows such a nuclear accident may directly affect investors perceptions of both the expected cash flows of utilities and their risk these future cash flows are affected because a nuclear accident may cause additional costs due to extended shutdowns or abandonment of nuclear plants expenses of responding to a nuclear accident and costs of purchasing replacement power the response of utility returns to tmi is analyzed at three levels first the risk adjusted returns for the utility experiencing the nuclear accident general public utilities gpu are measured over monthly time periods surrounding tmi the same analysis is performed on an aggregate sample of electric utility firms to assess the direction and magnitude of tmi s impact on other firms in the industry lastly the sample is divided into utilities with significant nuclear generating capacity at the time of tmi and utilities with no nuclear generating capacity so that the differential impact of the nuclear accident on nuclear and non nuclear public utilities may be assessed both a single and two index market model are used to estimate risk adjusted returns the latter index model includes an interest rate index as well as an equity market index

parent firm performance across international joint venture life cycle stages the benefits that firms obtain from investing in international joint ventures ijvs can be reinforced or reduced by the management of later stages of collaboration this paper presents an analysis of the shareholder wealth effects of ijv formation and five types of ijv termination the empirical findings challenge common assumptions in the ijv literature contrast prior evidence on the performance implications of market entry and exit through acquisitions and divestitures and demonstrate the value of integrating ijv life cycle stages in future research

intraindustry information transfers associated with management forecasts of earnings this study documents information transfers associated with the sign and magnitude of the changes in earnings expectations conveyed by management forecasts that is the management forecast of one firm discloser generates unexpected price reactions for firms nondisclosers similar to the forecaster the results are consistent with information transfers documented for releases of actual earnings foster 1981 and sales announcements olsen and dietrich 1985 1 these results build on prior management forecast research that has documented a link between the sign and magnitude of the changes in earnings expectations conveyed by management forecasts and the unexpected share returns price reactions of forecasting firms ajinkya and

cross sectional dependence and problems in inference in market based accounting research this paper provides a framework and some empirical evidence to evaluate the seriousness of problems in inference that arise in stockreturn based studies when the data are cross sectionally dependent the study is motivated on the grounds that statistical procedures designed to address such problems are often infeasible and even when they can be implemented they sometimes introduce other more serious difficulties thus researchers have frequently adopted an approach that ignores the cross sectional dependence e g ordinary least squares ols the objective of this paper is to help identify the contexts in which ignoring the dependence would lead to serious misstatement of significance levels cross sectional dependence in stock returns data is likely to exist when at least some of the returns are sampled from common time periods this would be the case in all studies of the reaction of stock prices to a

a note on reit bankruptcy and intraindustry information transfers an empirical analysis abstract this paper examines the capital market response to the bankruptcy of residential resources res res a real estate investment trust reit we find a significant event day value decline for a broad portfolio of reits reits whose portfolios are most similar to res res experienced both a significant value decline and an increase in bankruptcy risk on the event day reits with dissimilar portfolios experienced neither of these effects among the reits with similar portfolios to res res leverage ratios explain 84 of the event day value declines our findings suggest that ignoring intraindustry firm differences can lead to spurious conclusions

futures markets and production decisions this paper investigates the use of futures prices in making production decisions we derive a preference independent production rule for firms that face both demand and production uncertainty this rule is compared to a simple marginal cost equals future price rule which previously has been suggested for firms with deterministic output data for agricultural producers are used to examine the importance of output uncertainty in the determination of the proper production rule our analysis suggests that for many crops the simple rule is sufficiently accurate to be a useful guide to production

order imbalances and stock price movements on october 19 and 20 1987 on october 19 1987 nyse stocks in the s p index declined seven percentage points more than nyse stocks not in this index in the first hour of trading on october 20 the s p stocks virtually recovered to the level of the non s p stocks there is a strong relation between order imbalances and stock price movements both in analyses of time series and cross sections thus in addition to the breakdown in the linkage between future prices and the spot index on these two days there were also breakdowns in the linkage among nyse stocks

the pricing of options with default risk this paper considers the pricing of options with default risk the comparative statics of such options can differ from those of ordinary options and early exercise of such american call options can be optimal several examples of options with default risk are considered traditionally it has been assumed that options have no default risk such an assumption is reasonable when one studies options traded on an organized exchange in the u s default on such options would require as cox and rubinstein 5 put it a very sudden and strong movement in stock prices one considerably more extreme than any on record p 71 however many options and financial assets containing option like payoffs are sold by firms that have limited assets for such options default is often a possibility that must be taken seriously in this paper we study how options subject to default risk which we hereinafter call vulnerable options are priced it turns out that many of the well established results of the option pricing literature see e g smith 12 and references therein do not hold for vulnerable options in particular the value of a vulnerable european option can fall with time to maturity with the interest rate and with the variance of the underlying asset furthermore it may pay to exercise early a vulnerable american option on a non dividend paying asset

event study methodologies and the size effect abstract this study of 862 press recommendations demonstrates that the size effect can distort longer term performance measures and hence event studies relative to similar sized companies post publication performance is neutral however market adjustments the capm and market model with equally or capitalization weighted indexes all produce biased results event studies are most exposed to such bias when the measurement interval is long event securities differ systematically in size or weighting from the index constituents the size effect is large and or volatile and when capm type methodologies are used these distortions are avoided by explicitly controlling for size

commodity derivatives pricing with cointegration and stochastic covariances abstract empirically cointegration and stochastic covariances including stochastic volatilities are statistically significant for commodity prices and energy products to capture such market phenomena we develop a continuous time dynamics of cointegrated assets with a stochastic covariance matrix and derive the joint characteristic function of asset returns in closed form the proposed model offers an endogenous explanation for the stochastic mean reverting convenience yield the time series of spot and futures prices of wti crude oil and gasoline shows cointegration relationship under both physical and risk neutral measures the proposed model also allows us to fit the observed term structure of futures prices and calibrate the market implied cointegration relationship we apply it to value options on a single commodity and on multiple commodities

the tylenol incident ensuing regulation and stock prices the much publicized tylenol incident in 1982 led to stringent packaging regulations for over the counter pharmaceutical drugs the sudden incident and the swift progression of associated events offer a unique opportunity to assess the wealth effects of the resultant regulations the market value of common stock of johnson johnson makers of tylenol declined by approximately 29 percent amounting to 2 31 billion although other firms in the industry also suffered significantly their share price decline did not occur around the tylenol incident but occurred around the subsequent packaging reg ulation proceedings on average 28 other pharmaceutical firms analyzed in this study experienced a decline of 310 million per firm or a total of about 8 68 billion the results suggest that the regulation had a significant negative effect on the common stock prices of firms in the pharmaceutical industry

does the nairu have the right dynamics the nairu view of the relationship between inflation and the unemployment rate is that there is a value of the unemployment rate the nairu below which the price level forever accelerates and above which the price level forever decelerates this view imposes two important restrictions on the dynamics of the price process this can be seen by examining a simple version of the nairu equation

the october 1987 s p 500 stock futures basis five minute changes in the s p 500 index and futures contract are examined over a ten day period surrounding the october 1987 stock market crash since nonsynchronous trading problems are severe in these data new index estimators are derived and used the estimators use the complete transaction history of all 500 stocks nonsynchronous trading explains part of the large absolute futures cash basis observed during the crash the remainder may be due to disintegration of the two markets even after adjustment for nonsynchronous trading the index displays more autocorrelation than does the futures and the futures leads the index

an analysis of divestiture effects resulting from deregulation capital market data were used to examine the divestiture effects pertaining to deregulation the dropping of antitrust charges and the reversing of the co insurance effect associated with the recent breakup of at t the empirical results of the study indicate that significant economic events took place during the breakup process which led to transfers of wealth from various parties to the securityholders of at t the results also indicate that the buffering effect of regulation was reduced as at t went through the total deregulation process this is in accordance with peltzman s prediction the focus of this research is an involuntary breakup split up or total divestiture of a major corporation in the economy at t the breakup of at t occurring on january 1 1984 provides an excellent opportunity to study both merger and acquisition theory in reverse as well as to analyze the impact of significant deregulation on a large corporation in the economy while several firms have involuntarily divested themselves of a division or subsidiary over the recent past the size of the divestiture is usually not significant enough to be observed in the returns to bondholders stockholders and third parties the recent large scale breakup of at t by court order occurred over a fairly long time period approximately two years which makes it possible to examine the effects of certain specific subevents with respect to the wealth transfer among the claimants of the firm it is also possible to draw some conclusions about the effects of deregulation on corporate investors in general by examining the returns behavior over the extended split up period capital market data were used to examine the divestiture effects pertaining to the breakup of at t many theoretical and empirical studies have analyzed the impact of mergers and acquisitions on the wealth of corporate investors on the theoretical side single period cash flow models preserving limited liability have been developed by baron 2 chen 7 higgins and schall 11 and brennan 5 on the empirical side work by mandelker 15 langetieg 14 and asquith 1 has investigated the effect of mergers on target and bidder stockholder returns the results of these studies warrant the following general conclusions a some of the wealth of premerger stockholders may be transferred to the bondholders of southern methodist university and the university of texas at dallas respectively we would

intra industry information transfers associated with earnings releases abstract the impact that a firm s earnings releases have on the stock prices of other firms in its industry is examined for an identifiable sub set of firms the results are consistent with a significant information transfer occurring between the earnings release firm and the other firms in its industry this subset is identified by examining the impact of the release on the stock price of the announcing firm the magnitude of this impact is more significant for a sample of firms which have a larger percentage of their revenues in the same line of business as the earnings release firm vis a vis a sample with a lower percentage of their revenues from the same line of business alternative interpretations of the empirical results are also discussed the research findings have implications for information content and market efficiency research and for research on policy issues associated with disclosure regulation

the relation between forward prices and futures prices abstract this paper consolidates the results of some recent work on the relation between forward prices and futures prices it develops a number of propositions characterizing the two prices these propositions contain several testable implications about the difference between forward and futures prices many of the propositions show that equilibrium forward and futures prices are equal to the values of particular assets even though they are not in themselves asset prices the paper then illustrates these results in the context of two valuation models and discusses the effects of taxes and other institutional factors

the effect of three mile island on utility bond risk premia a note could be expected to react to the possibility of losses related to nuclear accidents and to the prospect of larger marginal costs associated with compliance with stricter regulation by public utility commissions this study tests for the effects of the tmi accident on bond risk premia in the public utility industry the following four null hypotheses are tested 1 bond risk premia did not increase in the industry as a whole because of the accident at tmi 2 bond risk premia were not affected by a firm s commitment to generate nuclear power 3 bond risk premia were not affected by the extent of the firm s commitment to nuclear power generation 4 bond risk premia were not influenced by the brand of reactor operated section i of the study briefly reviews the research that documents the effects of tmi on utility equities and considers previous models of bond risk premia based on those findings section ii specifies the null hypotheses in a testable form using a model of the risk premium that is consistent with the previous bond risk literature and is designed to control for bond specific factors and for the state of the economy results of the hypothesis testing appear in section iii section iv contains the study s conclusions

default risk in futures markets the customer broker relationship the traditional view of the futures clearinghouse as an insurer that eliminates the need for customers to evaluate default risk is inaccurate a clearinghouse member default in 1985 confirms that the clearinghouse only guarantees payment from member to member not from customer to customer or member to customer thus non defaulting customers are subject to losses as a result of the action of individuals with whom thay have no contractual obligations this study models the behavior of customers choosing a futures commission merchant fcm given the current legal position of the clearinghouse in a single period model with symmetric information customers can eliminate their exposure to defaults of other customers or of their fcm only by choosing to trade through boutique undiversified fcms in practice monitoring and rebalancing costs may impede the attainment of zero default risk however fcm diversification remains an important factor in customer choice of an fcm when setting capital requirements clearinghouses and government regulators need to consider the implications of diversification for both customer and market protection futures markets provide a well recognized service to the economy by allowing for broader access to the means for reducing risk futures markets are distinguished from forward markets largely by the role played by the clearinghouse and its members the clearinghouse has been viewed by telser and higinbotham 1977 black 1976 edwards 1983 and others as providing an important insurance function each trader need not worry about the risk of default by the other side of the contract because the clearinghouse presumably plays the short for every long and long for every short traders need only be concerned about the ability of the clearinghouse to live up to the terms on the futures contract one feature believed to enhance confidence in the clearinghouse is the requirement that margin be posted at the clearinghouse by each side of the contract see telser 1981 garbade and silber 1983 and brennan 1986 given daily resettlement on futures contracts if one side of the contract defaults the clearinghouse can close the position and use the margin to satisfy the other side of the contract in practice the clearinghouse requires only that the broker or futures commission merchant fcm post the margin and within some constraints leaves the fcm to set requirements with its own customers

the incremental information content of replacement cost earnings abstract the study explores the incremental explanatory power of replacement cost earnings variables derived from asr 190 data with respect to explaining cross sectional differences in security returns as such the study is a natural extension of previous research including analyses of the effect of security returns of asr 190 data at the time of disclosure investigations of cross sectional relationships between security returns and historical cost earnings and studies of multiple signals the basic finding is that pre holding gain net income provides no incremental explanatory powerm given knowledge of historical cost earnings however the converse does not hold taken together the findings are consistent with the contention that pre holding gain net income is a garbled version of historical cost earnings the basic finding is robust under several extensions of the initial research design the research design incorporates a two stage approach which permits a determination of the incremental explanatory power of collinear variables the findings are in contrast to those of a previous study by easman et al 1979 the nature of the difference in research design inducing the difference is identified potential reasons for the difference in findings are provided

safety crises and r d outsourcing alliances which governance mode minimizes negative spillovers abstract this study examines how r d alliance governance affects both the probability and magnitude of negative spillovers triggered by a partner s safety crisis i show that hierarchical governance leads to a lower probability that a partner will suffer a crisis and thus trigger a negative spillover yet this governance mode leads to negative spillovers of greater magnitude should they happen because expected spillover costs are calculated as the probability of occurrence times the magnitude of such costs it is not clear which governance mode best minimizes expected spillover costs i combine transaction costs economics and signaling theory to develop a contingency model that identifies which effect is more likely to dominate as a way to address the reported dilemma i found evidence in support of the described dilemma and the contingency model in a sample of 296 r d outsourcing alliances in the biopharmaceutical industry

studying firm specific effects of regulation with stock market data an application to oil price regulation regulations are often introduced and reformed in response to unanticipated changes in market forces in late 1973 for example opec quadrupled the world price of oil and u s policy makers responded by imposing oil price regulation such events pose a fundamental problem of interpretation for studies that use stock prices to identify the economic effects of regulation what portion of the capital gains or losses experienced by investors in regulated firms is due to regulation and what portion is due to unanticipated economic events to answer these questions we use microeconomic theory to derive hypotheses about how the capital gains and losses created by opec pricing and u s regulatory policies are related to the underlying characteristics of petroleum firms we test the hypotheses by including a model of firm specific abnormal returns in the standard market models of common stock returns earned by investors in petroleum firms the results indicate the u s oil production and refiner access to price controlled crude oil were sources of capital gains and that u s and foreign refining were sources of capital losses

impact of bovine spongiform encephalopathy on agribusiness in the united kingdom results of an event study of equity prices this article assesses the impact on agribusinesses of the united kingdom government s announcement of a possible link between bovine spongiform encephalopathy and human health three approaches are employed to derive benchmark models against which abnormal returns are estimated a simple market model scholes williams approach and an autoregressive distributed lag model abnormal returns are estimated for single firms and for subsectors over an eight day event window the autoregressive distributed lag model performs best and indicates significant negative abnormal returns in the beef pet food animal feed and dairy sectors and positive abnormal returns in the other meats sector

intra industry information releases a recursive systems approach abstract this paper investigates the extent of intra industry information transfers associated with the half yearly earnings announcements of a sample of australian firms the omitted factor interpretation of foster s 1981 results is examined using a recursive systems specification of the return generating process to model extra market return covariation in cross section although some aspects of the results do appear sensitive to the alternative methodologies the overall conclusion is consistent with foster 1981 and supports the existence of intra industry information transfers associated with firms earnings releases

the financial impact of product recall announcements in china abstract a product recall can be viewed as a firm s worst nightmare although the long term damage to brand equity and company reputation may be difficult if not impossible to quantify the short term impact on shareholders wealth is readily estimable while many studies have examined this issue in the western context little is known about the financial impact of a product recall announcement in china to advance the knowledge about the financial impact of a product recall announcement we explore this issue using event study methodology in general our findings are congruent with previous research that product recalls result in negative abnormal returns interestingly however we found that chinese companies suffered from greater financial losses than their western counterparts did this study also provides evidence that the chinese food industry experiences a more severe stock market reaction than the automobile industry and that a passive recall strategy was associated with a more negative stock market reaction than a proactive recall strategy we conclude with several future research avenues for global research on product recalls

real wages real interest rates and the phillips curve this article argues that any analysis of a phillips curve should include the real interest rate in addition to inflation and real wages as any changes in the interest rate changes the labour capital input mix in the production process leading to a change in the level of employment in the economy to justify this argument a phillips curve model is developed which includes the real interest rate in addition to inflation and real wages after the diagnosis of the time series properties of the data an error correction model is developed and estimated using a set of us annual data from 1948 to 1996 the estimated parameters of the model do suggest that one should really take into consideration of the real interest rate while analysing the phillips curve a non nested test f test also suggests that the phillips curve model with real interest rate as an additional variable performs better than the conventional method that does not include the real interest rate

differential intra industry information transfer associated with management earnings forecasts abstract this study proposes that the amount of information about one firm conveyed by management forecasts of another firm in the same industry depends on the earnings covariance between the two firms and the forecast firm s earnings variance the covariance reflects the competitive relation between the firms and the variance represents noise contained in forecasts when both variance and covariance are included in regressions nonforecast firms abnormal returns are associated with forecast firms abnormal returns when they are excluded no such association is observed the results are similar but much weaker when the independent variable is unexpected management forecasts

note on the behavior of residual security returns for winner and loser portfolios abstract portfolios are formed directly and exclusively upon residual return behavior in the months prior to portfolio formation the empirical behavior of residual return in the post formation period is then examined based upon the overall time period studied 1932 through 1977 the average residual return is essentially zero in the months subsequent to the portfolio formation however systematic i e non zero residual behavior is observed in particular years moreover the results suggest the possibility that abnormal returns observed after certain events e g earnings announcements may at least in part reflect more general phenomena associated with being winners and losers in terms of residual returns in the months previous to the event

the effect of voluntary sell off announcements on shareholder wealth sell off activities arise when a firm sells part of its assets e g a segment a division etc but continues to exist in essentially the same form this study investigates the effect of voluntary sell offs on stock returns from a sample of over 1000 sell off events first public announcements the evidence shows that both sellers and buyers earn significant positive excess returns from these transactions the excess returns earned by buyers are smaller than those earned by sellers there is also evidence that sell off announcements are preceded by a period of significant negative returns for the sellers which suggests that the sellers on average performed poorly prior to their sell off activities substantial research has been undertaken in recent years on mergers acquisitions tender offers capital structure changes and other financial planning topics this research has considerably expanded our knowledge about the association of these decisions with the welfare of the stockholders involved in these transactions selling a portion of the firm s assets is another important financial planning decision 2 this paper investigates the effect of voluntary sell off announcements on shareholder wealth a sell off is defined as selling part of a firm s assets e g a segment a division etc while the firm continues to exist in essentially the same form as that prior to the sell off this study does not examine the effects of involuntary ordered by the government sell offs and other similar activities such as spin offs leveraged buy outs liquidations reorganizations etc 3

stock price response to accounting information in oligopoly in this article the authors explore the linkages between the ball brown effect and the information transfer effect in oligopoly using the data from the wall street journal s digest of earnings report column they analyze how the stock market reacts to the subearnings information the authors show that an unexpected increase in sales is good news to the disclosing firm as well as to its competitors however an unexpected increase in costs is bad news to the disclosing firm but good news to its competitors the ball brown effect can be viewed as a consequence of stock market reactions to subearnings disclosure copyright 1992 by university of chicago press