the effective tax rate and the pretax rate of return abstract this paper presents new estimates of the taxes paid on nonfinancial corporate capital on the pretax rate of return to capital and on the effective tax rate the basic time series show that both the pretax rate of return and the effective tax rate have varied substantially in the past quarter century an explicit analysis indicates that after adjusting for different aspects of the business cycle pretax profitability was between one and 1 5 percentage points lower in the 1970s than in the 1960s the rate of profitability in the 1960s was also about one half of a percentage point greater than the profitability in the 7 years of the 1950s after the korean war changes in productivity growth in inflation in relative unit labor costs and in other variables are all associated with changes in profitability none of these variables however can explain the differences in profitability between the 1950s 1960s and 1970s looking at broad decade averages the effective tax rate and the pretax rate of return move in opposite directions lower pretax profits occuring when the tax rate is high there thus appears to have been no tendency for pretax profits to vary in a way that offsets differences in effective tax rates

new evidence of the impact of dividend taxation and on the identity of the marginal investor this paper examines the impact of a major change in dividend taxation introduced in the united kingdom in july 1997 the reform was structured in such a way that the immediate impact fell almost entirely on the largest investor class in the united kingdom namely pension funds we find significant changes in the valuation of dividend income after the reform in particular for high yielding companies these results provide strong support for the hypothesis that taxation affects the valua tion of companies and that pension funds were the effective marginal investors for high yielding companies

ex day behavior tax or short term trading effects this study examines the behavior of share prices around the ex dividend dates before and after the introduction of the 1988 income and corporation taxes act that reduced substantially the tax differential between dividends and capital gains in the united kingdom we find that in the pre 1988 period when the differential taxation of dividends and capital gains is high ex day returns are positive and significant in contrast in the post 1988 period ex day returns are in most cases negative and insignificant further analysis reveals that while ex day returns are significantly related to dividend yield and to the length of the settlement period they are not affected by the commonly used measures of transaction costs such as the bid ask spread and trading volume or by the day of week month of the year type of dividend distribution or number of days to the actual receipt of the cash dividend we conclude that taxation affects significantly ex day share prices in the previous studies have documented that the risk adjusted abnormal returns on the ex dividend dates are positive and significantly related to the dividend yield the interpretation of these findings is however controversial the question relates to what category of investors sets ex day prices elton and

convergence to efficiency in a simple market with incomplete information a model of trade with m buyers and m sellers is considered in which price is set to equate revealed demand and supply in a bayesian nash equilibrium each trader acts not as a price taker but instead misrepresents his true demand supply to influence price in his favor this causes inefficiency we show that in any equilibrium the amount by which a trader misreports is o 1 m and the corresponding inefficiency is o 1 m2 the indeterminacy and the inefficiency that is caused by the traders bargaining behavior in small markets thus rapidly vanishes as the market increases in size

dividend stripping risk exposure and the effect of the 1984 tax reform act on the ex dividend day behavior this article investigates the importance of risk exposure and the effects of the 1984 tax reform act on the ex dividend day behavior the tax reform appears to have inhibited short term trading activities by increasing the risk exposure of incorporated traders moreover stocks for which existing listed options permitted the reduction of risk through hedged dividend stripping strategies were affected much less from the new tax code than their nonoptionable counterparts this implies that risk affects investors dividend yield choice and that the ex dividend day behavior may be caused in part by the existence of risk premia copyright 1989 by the university of chicago

effects of the minimum wage on the employment status of youths an update the large decline in the relative value of the minimum wage during the 1980s makes that period a valuable one for identifying the impact of variation in the minimum wage on youth employment this study produces the robust finding that when the experience of the 1980s is included a 10 percent increase in the minimum wage is estimated to reduce teen employment by less than 1 percent the lower end of the range of previous estimates because this small employment effect is offset by a labor force withdrawal effect the study finds no discernible effect on measured unemployment the study also finds no apparent effect of the minimum wage on the employment of young adults aged 20 24

common persistence in conditional variances since the introduction of the autoregressive conditional heteroskedastic arch model in engle 1982 numerous applications of this modeling strategy have already appeared a common finding in many of these studies with high frequency financial or monetary data concerns the presence of an approximate unit root in the autoregressive polynomial in the univariate time series representation for the conditional second order moments of the process as in the so called integrated generalized arch igarch class of models proposed in engle and bollerslev 1986 in the igarch models shocks to the conditional variance are persistent in the sense that they remain important for forecasts of all horizons this idea is readily extended to a multivariate framework even though many time series may exhibit persistence in variance it is likely that several different variables share the same common long run component in that situation the variables are naturally defined to be co persistent in variance and the co persistent linear combination is interpretable as a long run relationship conditions for co persistence to occur in the multivariate linear garch model are presented these conditions parallel the conditions for linear co integration in the mean as developed by engle and granger 1987 the presence of co persistence has important implications for asset pricing relationships and in optimal portfolio allocation decisions an empirical example relating to the time series properties of nominal u s dollar exchange rates for the deutschemark and the british pound provides a simple illustration of the ideas

fundamentals of shareholder tax capitalization abstract we investigate how shareholder level taxes are capitalized into stock prices using a model that incorporates the investment and payout decisions of a firm and the investment alternatives available to investors shareholder taxes affect stock prices both indirectly via the effect of taxes on corporate investment decisions and directly by reducing both the mean and variance of after tax returns in our model tax capitalization is not eliminated by the presence of tax exempt investors does not depend on whether equity is composed of contributed capital or retained earnings and does not depend on the tax rate faced by a hypothetical marginal investor

dividend taxation and equity value the canadian tax changes of 1986 the 1986 canadian federal budget which increased the tax rate on dividends vis a vis capital gains provides a natural experiment for examining the relationship between taxation and asset values the authors employ a stock market event study to investigate the differential impact of this tax change on high and low dividend securities to control for other new information contained in the budget they focus on companies that issue both preferred high dividend stocks and common low dividend stocks the authors find that abnormal returns are negatively related to dividend yields which provides support for the hypothesis that taxes affect stock prices

taxes and dividends the uk evidence abstract this paper provides empirical evidence on the simultaneous effects of both corporation and personal income taxes on dividend payment adjustments and on the behaviour of share prices on the ex dividend dates the results show that companies set their dividend policies to minimise their tax liability and to maximise the after tax return of their shareholders in particular firms that are unable to deduct the advanced corporation tax from their tax liability are found to pay low dividends in addition consistent with the tax hypothesis we find that the differential taxation of dividends and capital gains results in a decrease in ex day share prices by significantly less than the amount of the dividend there is no evidence of a tax induced dividend clientele

multi unit pay your bid auctions with variable awards abstract multi unit auctions in which bidders can win a variable number of units differ significantly from multi unit auctions in which bidders can only win one unit in an independent private values pay your bid auction where bidders may win up to two units we show that first order conditions imply separating and pooling of bids must both occur with positive probability this behavior is not found in multi unit uniform price auctions it also contrasts with asymmetric first price auctions of a single good whose first order conditions are superficially similar a uniform distribution example is analyzed numerically journal of economic literature classification numbers d44 d82 c72

capital gains tax and equity values empirical test of stock price reaction to the introduction and reduction of capital gains tax exemption abstract this paper evaluates the differential effect on stock prices of the introduction in canada of 500 000 capital gains tax exemption and the reduction of this limit to 100 000 two years later using the seemingly unrelated regression methodology and controlling for thin trading and heteroscedasticity the empirical evidence indicates that the changes in capital gains tax laws had a differential effect on low dividend yield and high dividend yield stocks on both occasions while the evidence indicates that the stock market anticipated the 1985 capital gains tax law changes the significant market reaction to the 1987 reduction of the exemption occurred a day before and after the reading of the tax reform proposals in parliament thus it can be inferred from the results that despite the presence of tax sheltering opportunities in canada changes in capital gains tax laws affect equity values

ex dividend day stock price behavior the case of the 1986 tax reform act this paper analyzes the behavior of stock prices around ex dividend days after the implementation of the 1986 tax reform act that dramatically reduced the difference between the tax treatment of realized long term capital gains and dividend income in 1987 and completely eliminated the differential in 1988 we show that this tax change had no effect on the ex dividend stock price behavior which is consistent with the hypothesis that long term individual investors have no significant effect on ex day stock prices during this time period the results indicate that the activity of short term traders and corporate traders dominates the price determination on the ex day

the effect of taxes on the relative valuation of dividends and capital gains evidence from dual class british investment trusts we provide evidence that taxes affect equity valuation by studying british investment trusts having otherwise identical classes of cash and stock dividend paying shares outstanding we study 1969 1982 a period in which there were two dramatic changes in tax policy we find that stock dividend shares which are convertible into cash dividend shares sell at premiums when the tax system favors capital gains and at discounts when the tax advantage of capital gains is reduced after the 1975 elimination of the tax advantage to stock dividend shares we observe that investors convert virtually all stock dividend shares into cash dividend shares the possible existence of tax related dividend clienteles remains a controversy long 1978 poterba 1986 and bailey 1988 study firms with two classes of shares one class paying stock dividends and the other paying cash dividends for evidence of these clienteles and their effects on equity valuation the evidence from these studies is mixed long finds evidence supporting an investor preference for cash dividends over capital gains while poterba and bailey find no evidence of a preference for cash dividends we provide additional evidence on tax clienteles and their effects on equity valuation by studying twelve british investment trusts having one class of shares entitled only to stock dividends or scrip dividends the british term and another class entitled only to cash dividends our study of dual class british investment trusts provides unique insights

new evidence that taxes affect the valuation of dividends this paper uses british data to examine the effects of dividend taxes on investors relative valuation of dividends and capital gains british data offer great potential to illuminate the dividends and taxes question since there have been two radical changes and several minor reforms in british dividend tax policy during the last 30 years studying the relationship between dividends and stock price movements during different tax regimes offers an ideal controlled experiment for assessing the effects of taxes on investors valuation of dividends using daily data on a small sample of firms and monthly data on a much broader sample we find clear evidence that taxes affect the equilibrium relationship between dividend yields and market returns these findings suggest that taxes are important determinants of security market equilibrium and deepen the puzzle of why firms pay dividends financial economists have long been puzzled by corporate dividend behavior many individual investors should value a dollar of corporate dividends less than a dollar of corporate retentions because the former gives rise to greater tax liabilities corporations however face equal costs of paying out dividends and retaining earnings miller and modigliani 31 demonstrated that in the absence of taxes dividend policy should have no effect on share valuation if dividends are tax penalized however a value maximizing firm should pay no dividends widespread dividend payments to taxable investors are therefore surprising in 1981 dividend tax revenues in the united states were estimated to exceed 20 billion dollars indeed some have interpreted the large volume of dividends paid as evidence against the rational behavior postulates typically used by economists the dividend question has stimulated a large theoretical and empirical literature concerned with the qluestion of investors valuation of dividends in particular the question of how taxes affect the market valuation of dividends has generated considerable controversy numerous studies including auerbach 2 litzenberger and ramaswamy 24 26 morgan 34 and rosenberg and marathe

national culture and dividend policy this interdisciplinary study examines how national culture affects corporate dividend policies the dividend puzzle is one of the most studied yet unresolved issues in financial economics prior theoretical and empirical research has suggested several explanations of the dividend puzzle that are rooted mainly in agency asymmetric information bird in hand and pecking order theories the main intuition behind our analysis is that dividend policy may be determined not only by an objective assessment of the severity of agency and asymmetric information problems within a firm but also by management s and investors subjective perceptions of these problems which hinge on their national culture using schwartz s national culture dimensions conservatism and mastery we find that conservatism is positively related and mastery negatively related to dividend payouts for a sample of 27 462 firm years from 21 countries between 1995 and 2007 these effects are robust to controls for a wide variety of other determinants of dividend policy including investor protection stock market performance financial system configuration tax advantage economic development and dividend catering premium and to alternative culture proxies and sub period windows our findings that national culture affects perceptions of and responses to agency and information asymmetry have important implications for policymakers and multinational enterprises

equity markets and personal taxation the ex dividend day behaviour of finnish stock prices abstract this paper analyzes the ex dividend day behaviour of stock prices in the finnish stock market the tax structure in finland is strikingly similar to the new tax structure in the u s which was for the first time in effect during the fiscal year 1987 the results in this paper may thus also illuminate the ex dividend day behaviour in the u s stock markets under the new tax law our empirical data show that the average drop in the stock prices on their ex dividend days has been 90 of the amount of the dividend during the years of 1974 to 1985 this is shown to be consistent with the tax explanation taking into account the finnish tax laws it is especially shown that the marginal seller on the ex dividend days is an individual investor with a marginal tax rate of approximately 50

the value of dividend imputation tax credits in australia abstract a dividend imputation tax system provides shareholders with a credit for corporate tax paid that can be used to offset personal tax on dividend income this paper shows how to infer the value of imputation tax credits from the prices of derivative securities that are unique to australian retail markets we also test whether a tax law amendment that was designed to prevent the trading of imputation credits affected their economic value before the amendment tax credits were worth up to 50 of face value in large high yielding companies but subsequently it is difficult to detect any value at all

the effect of regret on optimal bidding in auctions while most models of auctions and competitive bidding assume that each bidder s utility for an outcome depends only on his own profit we allow the utility to also depend on any regret that a bidder suffers after the fact and characterize when and how this affects bidding specifically a winner might regret money left on the table in federal offshore oil lease sales while a loser might regret seeing an object sell for less than his own value for it we show that for risk neutral bidders who after the fact know the winner s price for the object a bidder s optimal bidding strategy will not depend on the relative weight given to profit versus regret if both forms of regret weigh equally heavily however if bidders weight money left on the table regret more heavily then the bid taker suffers likewise if losers do not learn the winner s price then the bid taker also suffers thus the existing models exclusion of regret from risk neutral bidders utility functions affects the applicability of the

efficiency of large private value auctions we consider discriminatory and uniform price auctions for multiple identical units of a good players have private values possibly asymmetrically distributed and for multiple units our setting allows for aggregate uncertainty about demand and supply in this setting equlibria generally will be inefficient despite this we show that such auctions become arbitrarily close to efficient if they are large and use this to derive an asymptotic characterization of revenue and bidding behavior

revenues and welfare in auctions with information release abstract this paper studies information release in symmetric independent private value auctions with multiple objects and unit demand we compare effects on welfare to those on the seller s revenue applying the dispersive order the previous literature could only identify settings in which welfare provides the stronger incentives for information release we generalize the dispersive order to k and k m dispersion these new criteria allow us to systematically characterize situations in which revenue provides stronger incentives than welfare and vice versa k m dispersion leads to a complete classification if signal spaces are finite and sufficiently many bidders take part

portfolio rebalancing and the effective taxation of dividends and capital gains following the tax reform act of 1986 abstract the tax reform act tra of 1986 among other things equalized the nominal taxation of dividend and capital gains income the evidence is consistent with the hypothesis that ordinary investors rebalanced their portfolio holdings in response to the new taxes such rebalancing appears to have concentrated on liquid stocks indicating that transaction costs are an important consideration for ordinary investors involved in restructuring their portfolio holdings the tax clientele relationships that existed prior to the new act were distorted temporarily but have reappeared by 1988 interestingly investors post reform effective tax rates still give a preference to capital gains as they did prior to the tax reform

test for tax effects in the pricing of financial assets this paper tests four competing hypotheses regarding taxation and the pricing of financial assets no differential tax effects in the pricing of stocks or bonds the equilibrium condition described by miller 1977 the two parameter after tax pricing equations of brennan 1970 and litzenberger and ramaswamy 1979 and dividend related clientele effects described by elton and gruber 1970 and litzenberger and ramaswamy 1980 these hypotheses make substantially different predictions about the impact of taxes on financial decisions however when stated in terms of returns the hypotheses imply parameter restrictions with the same functional form the commonality of the parameter restrictions allows simultaneous testing of all four models by testing the form of the parameter restrictions this approach differs from that of previous researchers who have by and large implicitly assumed that the parameter restrictions implied by the respective models hold see elton and gruber 1970 black and scholes 1973 1974 litzenberger and ramaswamy 1979 1980 miller and scholes 1982 conditional on this assumption parameter estimates have been made and this paper tests four models describing the impact of taxes on financial asset returns no tax effects miller s equilibrium the twoparameter pricing models of brennan and litzenberger and ramaswamy and taxinduced dividend clientele effects these tests are carried out by casting the hypotheses in terms of systems of equations and identifying the parameter restrictions implied by each of the hypotheses the systems approach is particularly useful for testing for clientele effects because we are able to identify withinand between equation restrictions without specifying the marginal tax rate of the clientele which holds a particular security my results suggest that none of tax motivated hypotheses is descriptive of the data this paper is a distillation of several research projects i have undertaken in the last two years special thanks are in order to g constantinides e fama j ingersoll a madansky and m scholes i owe a particularly important debt to merton miller for help and encouragement finally i would like to thank steve buser and e han kim

payout taxes and the allocation of investment when corporate payout is taxed internal equity retained earnings is cheaper than external equity share issues if there are no perfect substitutes for equity finance payout taxes may therefore have an effect on the investment of firms high taxes will favor investment by firms who can finance internally using an international panel with many changes in payout taxes we show that this prediction holds well payout taxes have a large impact on the dynamics of corporate investment and growth investment is locked in in profitable firms when payout is heavily taxed thus apart from any level effects payout taxes change the allocation of capital

the ex dividend day behavior of stock prices a re examination of the clientele effect a comment in a recent article in this journal kalay 5 has written an extensive comment on our 1970 article 2 concerning marginal stockholder tax rates and the clientele effect while we are flattered that our article is viewed of sufficient importance to gain this attention 12 years after it was written we do have reservations about kalay s comments we are principally concerned with his interpretations of relevant transaction costs and the role they play in setting equilibrium

dividends and capital asset prices tax based dividend models of capital asset pricing assume that dividends are known at the time prices are set dividends which are announced and paid in the same month and dividends which were expected but cancelled in the month constitute surprises which interfere with many empirical tests of the effects of expected dividend yield on returns this paper avoids these problems by relating returns to forecasts of dividend yield obtained from past data three distinct views of the importance of dividends to investors have received support at one time or another according to the two most important views dividends have a neutral and a negative effect on security prices respectively miller and modigliani 1 and miller and scholes 12 13 favor complete substitutability of dividends and capital gain brennan 6 and litzenberger and ramaswamy 9 have developed models which incorporate differential taxation of income and capital gain in these models the tax disadvantage of income changes the investor s portfolio problem from one of optimization of mean and variance of portfolio before tax return to optimization in after tax terms stocks with relatively large dividend yields should provide high expected returns and so sell for low prices to compensate the investor for the tax much of the empirical evidence seems to favor the view that tax disadvantages of dividend income do not escape investors attention and that returns are higher when they include dividend income to compensate the investor for the tax liability however interpretation of the available evidence is difficult and it is significant that most of these researchers remain unconvinced that their own findings can be satisfactorily explained by tax effects ball brown finn and officer 1 interpret their estimates as being far too strong to be explained in terms of differential taxation blume 3 reaches a similar conclusion but litzenberger and ramaswamy attribute their results to the tax disadvantage of

on strategic quantity bidding in multiple unit auctions standard studies of multiple unit auctions generally overlook the strategic role of bidders quantity decisions using a simple equilibrium model of bidding the author analyzes bidders incentives to choose quantities in discriminatory and competitive auctions the main result is that bidders have a stronger strategic incentive to bid for fewer units in competitive auctions since under competition a bidder pays the lowest accepted price for each unit she gets she may benefit from dropping her quantity to let lower valuing bidders enter the set of winners this prediction is consistent with empirical observations from foreign currency and spectrum auctions copyright 1997 by blackwell publishing ltd

time series evidence of the effect of the minimum wage on youth employment and unemployment our updated estimates indicate that a 10 percent increase in the federal minimum wage or the coverage rate would reduce teenage 16 19 employment by about 1 percent which is at the lower end of the range of estimates from previous studies because of substantial labor force withdrawal the unemployment effects are practically zero these minimum wage effects differ very little by sex and there is no strong evidence that the effects vary by race the study also finds a significant albeit small unemployment impact for young adults 20 24 and examines the consequences of numerous alternative statistical and mathematical specifications of the estimating model

foreign and domestic investors and tax induced ex dividend day trading abstract this paper reports evidence on the consequences of differential tax treatment for domestic and foreign owners in a market with a high degree of foreign ownership for certain stocks the helsinki stock exchange hse we find that ex dividend day ratios vary with the degree of foreign ownership and detect significantly abnormal ex dividend day trading volumes the average ex dividend price drops for high yield high foreign ownership stocks are likely to lie outside no arbitrage boundaries for domestic taxable investors an investigation of short selling through a derivatives instrument also reveals significant excess trading volumes in ex dividend months the tax heterogeneity of the company s ownership structure seems to play a role in explaining deviations from dividend neutrality more deviations are observed for companies with a more homogeneous ownership structure in terms of taxation

the canadian tax reform and its effect on stock prices a note the effect of personal taxation on stock prices remains controversial while some researchers have found evidence of a tax effect in the stock market others have found evidence to the contrary this paper provides additional empirical evidence on the effect of the differential taxation of dividends and capital gains on stock prices by analyzing stock price changes around the 1971 canadian tax reform and its subsequent amendments in 1977 the results show that changes in the taxation of cash dividends and capital gains affected high yield and lowyield stocks listed on the toronto stock exchange tse differently section i of the paper describes the tax changes the method used to analyze the tax effect is described in section ii section iii reports the results and conclusions are presented in section iv

financing constraints and the cost of capital evidence from the funding of corporate pension plans we investigate the relation between firms weighted average cost of capital and internal financial resources using mandatory pension contributions as a proxy for internal financial resources rauh 2006 documents a negative association between mandatory pension contributions and capital expenditures we find that an increase in mandatory pension contributions increases the cost of capital but only for firms facing greater external financing constraints our results suggest that firms cost of capital is an intervening variable that can explain rauh s finding that mandatory pension contributions i e internal financing constraints result in foregone investment overall we provide evidence consistent with recent studies rauh 2006 almeida and campello 2007 that conclude that financial market frictions affect real economic activity and in particular corporate investment the author 2011 published by oxford university press on behalf of the society for financial studies all rights reserved for permissions please e mail journals permissions oup com oxford university press

marginal stockholder tax effects and ex dividend day price behavior evidence from taxable versus nontaxable closed end funds almost all research on the movement of stock prices on ex dividend days has found that prices decline by less than the dividend though this is consistent with tax effects several papers have argued that this phenomenon could be caused by market microstructure effects in this paper we make use of a natural experiment that provides support for the tax explanations of ex dividend behavior some closed end funds have taxable and some have nontaxable dividend distributions both types are subject to taxes on capital gains the implication of this for ex dividendday price behavior is very different between these two types of funds if taxes matter this paper demonstrates that the direction of ex dividendday price behavior is consistent with a tax explanation and that ex dividend day price behavior changes as theory would suggest with changes in the tax law

the effect of personal taxes on common stock prices the case of a belgian tax reform abstract this paper analyses how a belgian tax reform affected the relative pricing of securities with differential tax treatment of dividends the results show that stock prices reflect their relative personal tax advantage and the price differentials are significantly related to dividend yield

options taxes and ex dividend day behavior a novel way of estimating the expected as opposed to the actual share price fall off is developed using option prices this method is applied to the uk traded options market using data from 1979 to 1984 the results show that a the average expected fall off implicit in option prices is around 55 to 60 of the dividend and significantly different from it the fall off also varied inversely with the dividend yield which is consistent with the prediction of the tax clientele hypothesis b the estimates of the expected fall off were not significantly different from the actual fall off c finally the results imply that the usual assumption made in valuing options on dividend paying stocks that the fall off is equal to the dividend would lead to downward biased estimates of the option value

multiunit auctions in which almost every bid wins 1 introduction recent work suggests that multiunit auctions are much more complicated than their singleunit counterparts back and zender 1993 katzman 1995 noussair 1995 ausubel and cramton 1996 chakraborty 1997 engelbrecht wiggans and kahn 1998a because multiunit auctions are of such importance in economics and finance applications treasury auctions auctions for electromagnetic spectrum electric power privatizations procurement it becomes important for economic theorists to be able to make legitimate predictions about the performance of various commonly used auction forms this is an enormous task to date only certain natural but extreme cases have yielded to analysis for example restriction to auctions in which purchasers only want one or two units engelbrecht wiggans and kahn 1998a b katzman 1995 other results have been demonstrated asymptotically 1 a problematic case since expanding the number of bidders eliminates the very feature that generates a need for organized auctions a limited number of purchasers thus to have a comprehensive understanding of the behavior of multiunit auctions it will likely be necessary to devote attention to a large variety of cases as part of that process this paper examines a different sector of the parameter space one unexamined thus far but one that is readily amenable to solution by simple analytic techniques without resort to asymptotic approximations we consider auctions in which the number of units available is so large that every bid but one wins a unit we examine in the case of independent private values three different auctions the pay your bid auction section 3 and two different forms of uniform price auction sections 4 and 5 we find that when all but one bid wins the three auctions are efficient in section 6 we use a multiunit revenue equivalence result of engelbrecht wiggans 1988 to calculate their expected revenue by comparison to a vickrey auction vickrey 1961 1962 in most previously studied cases specifically those in which each bidder wins at most one object vickrey auctions turn out to be uniform price auctions in the case where all but one bid wins the vickrey auction differs significantly from uniform price auctions for example in the case of two bidders and a reservation price of zero efficiency implies that each bidder in the vickrey auction wins approximately half of the units nonetheless we show that all the revenue from the vickrey auction comes from one bidder the other pays nothing the analysis of the vickrey auction shows the importance of the reserve price in a multiunit setting we also find that the bids from the two forms of uniform price auction are identical providing some justification for the common practice of using one as a proxy for the other in theoretical work section 8 shows that this equivalence continues to hold for some cases beyond the pure private values setting of the rest of the paper of course the case where every bid but one wins is an extreme example nonetheless as we briefly argue in the final section the equivalence of the two uniform price auctions in this case is still significant since the extreme example we consider is in important ways biased against similarity of the two auction forms the final section also provides some conjectures about when the two forms of uniform price auction are likely to yield similar bids 9 summary in this paper we have used the case of auctions in which almost every bid wins as a natural laboratory for comparison of different auction rules we have seen three useful points the first is extremely simple if a player is guaranteed to win a unit the reserve price plays a central role in determining revenue in single unit auctions with more than one bidder reserve prices play no role as long as they are below the support of the bidders valuations in contrast when some bidder is assured of winning at least one unit no matter what that bidder bids we need a lower limit on the bids to keep revenue from drifting to minus infinity

dividends taxes and common stock prices the ex dividend day behavior of common stock prices before the income tax this study examines the ex dividend day behavior of common stock prices before the enactment of the federal income tax on ex dividend days during the pre tax period stock prices fell on average by the full amount of the dividend the data are consistent with the hypothesis that i investors in the pre tax period value dividends and capital gains as perfect substitutes and ii the differential taxation of dividends and capital gains has since caused investors to discount the value of taxable cash dividends in relation to capital gains

tax induced trading around ex dividend days abstract this paper investigates trading volume around ex dividend days for taxable distributions cash dividends it is found that trading volume increases significantly around the ex dividend day this increase is more pronounced for high yield actively traded stocks and after brokerage commissions became negotiable the results are consistent with the hypothesis that short term traders have an impact on ex day price behavior at least for taxable distributions for non taxable distributions stock splits and stock dividends we find negative abnormal volume around ex day

anticipated effects of the minimum wage on prices there is little empirical evidence on the effect of minimum wage increases on prices particularly for developing countries this paper provides estimates of this effect using monthly brazilian household and firm data over 18 years as minimum wage increases in brazil sare large and frequent they have a potentially important impact on aggregate prices rational agents in anticipation of such price effects may take minimum wage increases as a signal for future price and wage bargains we find that the minimum wage raises overall prices not only on the month of the increase but also in the two months prior to the change as well as after the change

tax reform and ex dividend day behavior this paper investigates the effect of a major canadian tax reform on the ex dividend day behavior of companies on the toronto stock exchange the results are inconsistent with the hypothesis that price changes on ex dividend days reflect the relative taxation of dividends and capital gains for the representative investor but are consistent with the hypothesis that ex dividend day price behavior reflects short term trading activities

asymptotic efficiency for discriminatory private value auctions we consider discriminatory auctions for multiple identical units of a good players have private values possibly for multiple units none of the usual assumptions about symmetry of players distributions over values or symmetry of equilibrium play are made because of this equilibria will typically involve inefficient allocations equilibria also become very difficult to solve for using an approach which does not depend on explicit equilibrium calculations we show that such auctions become arbitrarily close to efficient as the number of players and possibly the number of objects grows large and provide a simple characterization of limit equilibria

the effect of tax heterogeneity on prices and volume around the ex dividend day evidence from the milan stock exchange to investigate the effect of taxation on stock price and trading volume around the ex dividend day we use the italian stock market where dividends on two classes of stock are taxed differently we find that the weighted average of investors tax rates is reflected in the ex day prices and the variance of the relative tax rate across investors is reflected in the volume of trades we also show that higher transaction costs result in higher ex dividend day excess returns and lower abnormal volume this finding is consistent with profit elimination activity by institutions and corporations article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

does the investment interest limitation explain the existence of dividends abstract miller and scholes have shown that under certain conditions the federal income tax taxes dividend income at a rate no higher than the rate on capital gains tabulations of actual 1977 tax returns show that the special circumstances under which this can occur apply to recipients of two and one half percent of dividend income and that no dominant role may therefore be ascribed to their hypothesis in the determination of corporate dividend policy

the minimum wage and teenage employment a reanalysis with attention to serial correlation and seasonality we examine the effects of minimum wage legislation in canada over the period 1975 93 for teenagers we find that a 10 increase in the minimum wage is associated with roughly a 2 5 decrease in employment we also find that this result is driven by low

a simple examination of the empirical relationship between dividend yields and deviations from the capm abstract several papers have been published in recent years dealing with both the theoretical and the empirical impact of dividend yields on security returns dividends have been postulated as affecting stock returns because of tax effects agency costs and the wealth transfer hypothesis in this paper we perform a purely empirical examination of whether and to what extent deviations from the zero beta form of the capm are explained by divident yields the paper demonstrates that dividend yield has a large and statistically significant impact on return above and beyond that explained by the zero beta form of the capm this is consistent with the findings of litzenberger and ramaswamy in addition our results are consistent with the findings of small firm effects

a two stage sequential auction with multi unit demands abstract working within the independent private values paradigm i examine a sequence of two second price auctions where individual bidders have diminishing marginal valuations equilibria are characterized for complete and incomplete informational settings when information is complete allocations can be inefficient and price sequences are constant or decreasing however when information is incomplete and symmetric equilibrium behavior produces efficient outcomes and an expectation of increasing prices these divergent findings are reconciled using an argument based on ex ante bidder asymmetry that can also explain the declining price anomaly finally comparisons to other auctions are made in terms efficiency and revenue generation journal of economic literatureclassification number d44

auctions for split award contracts the buyer of a homogeneous input divides his input requirements into two contracts that are awarded to different suppliers he uses a sequential second price auction to award a primary and a secondary contract with a fixed number of suppliers the buyer pays a higher expected price than with a sole source auction the premium paid to the winner of the secondary contract must also be paid to the winner of the primary contract as an opportunity cost when entry is endogenous we identify the conditions under which a secondary contract can increase the number of suppliers and lower the expected price

stockholder tax rates and firm attributes abstract this paper develops a rigorous theoretical model to assess when investor clienteles may be empirically identified using ex dividend day data and what firm attributes these clienteles should respond to it then presents empirical results for the period 1963 1977 suggesting that 1 tax based investor clienteles do exist and are reasonably stable over time and 2 these clienteles are strongly influenced by the dividend price ratio but insignificantly by direct measures of risk and other firm characteristics

revenue equivalence in multi object auctions abstract the theory of auctions suggests that under certain conditions seemingly different methods for auctioning a single object will result in the same expected price this result extends quite easily to the case of more than one object

experimental comparisons of auctions under single and multi unit demand i introduction the study of multiple unit auctions is important because of their widespread use and the high value of goods sold examples include auctions of u s treasury debt cut flowers wine foreign exchange and other financial and monetary instruments moreover since auctions are often proposed by economists as a method of sale for other goods as in mcmillan 1994 the use of auctions can be expected to increase in the future many different auction rules are used to sell these diverse commodities and auction rule changes are often suggested usually with the intention of increasing revenue or improving the allocations and thus there is a considerable and increasing number of known auction formats evaluating new or comparing different auction mechanisms using field tests can be very costly and risky however experimental methods can and have been used by economists to study the behavioral characteristics of different auction procedures kagel 1995 provides a recent comprehensive survey most experimental studies consider the behavior of auctions when there is a single unit to be sold a few studies such as cox et al 1984 1985 and mccabe et al 1990 1991 study multiple unit auctions in environments in which each bidder demands at most one object from a set of identical objects being sold the studies of smith 1967 belovicz 1979 miller and plott 1985 and burns 1985 consider multi unit demand environments these are environments in which bidders have demand for multiple identical units and are permitted to purchase multiple units of the commodity sold the extension to multi unit demand is important since the presence of multi unit demand is a characteristic of many auctions in the field including all of the examples above in this study we consider the behavior of two types of multi unit auction under both single unit and multi unit demand we construct a laboratory environment which we use to study an english clock ec which is a special type of english auction and a sealed bid auction with lowest accepted bid pricing sb in the sb each bidder pays a per unit price equal to the lowest accepted bid the ec was chosen because it is known to provide highly efficient allocations in auctions of single unit goods and therefore is likely to be suggested for many field applications the sb was chosen because of its widespread use which makes its outcomes a useful basis of comparison for the outcomes of the english clock auction 1 however we do not attempt to represent a particular field situation here instead since our interest is in understanding the basic properties of the auctions we chose an experimental design that enables us to make simple comparisons across treatments and with previous and possibly future studies the design enables us to perform simple testing of game theoretic models in some of the treatments in our view the difference between single and multi unit demand is critical as we discuss in section ii many of the results of auction theory that are valid in single unit demand environments no longer apply in multi unit demand environments suggesting that the observed behavior of auctions might also differ between the two environments therefore we isolate the effects of multi unit demand by conducting single unit demand experiments under identical market demand and supply conditions as the multi unit demand experiments these and other aspects of the experimental design are described in detail in section iii the results and a discussion are given in sections iv and v respectively ii institutions theory and previous studies the english clock auction this variant of the english auction was modeled by milgrom and weber 1982 and studied by mccabe et al 1990 1991 in our version the auction begins with all bidders publicly and simultaneously announcing their initial quantity demanded at price zero if there is excess demand the price is increased by a small increment and the bidders then announce new quantities demanded

stationary data and the effect of the minimum wage on teenage employment one of the interesting features of time series work on the effect of the minimum wage is that the problem of possible spurious regressions when data may be non stationary has been largely ignored it is shown that this is potentially a serious problem it is found that although the teenage employment to population ratio is stationary the independent variables in time series regression equations are non stationary substitution of the stationary first differences of the independent variables in the regression equations for their levels is found to greatly undermine the estimated influence of the minimum wage on the employment to population ratio estimates of the effect of the minimum wage are found to be only marginally more significant when seasonal differencing of the dependent variable and an arch estimation technique are employed