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

the ex dividend day behavior of canadian stock prices tax changes and clientele effects with some simple assumptions the ex dividend day price drop and the associated dividend can be used to measure the market s marginal tax rate previous research has estimated the implied tax rate for the u s this paper extends the analysis to canada where the tax treatment of dividends and capital gains is completely different from that in the u s the paper also presents estimates from 1970 80 to include four distinct periods when the tax treatment was different hence we include an implied test of market efficiency as well as those for the relevance of taxes and the existence of tax based dividend clienteles

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

the link between pensions and retirement timing lessons from california teachers abstract i exploit a major unanticipated reform of the california teachers pension to provide quasi experimental evidence on the link between pension features and retirement timing using two large administrative data sets i conduct a reduced form analysis that leverages the nonlinearities in the return to work generated by the pension features and the reform induced shifts of these nonlinearities for identification the implied estimates of the elasticity of lifetime labor supply with respect to the return to work are centered around 0 04 in the medium run and are less than 0 1 in the long run

the ex dividend day behavior of option prices a security purchased at the opening of trade on the ex dividend day does not include a claim to the dividend announced earlier yet if purchased on the previous day the last cum dividend day it does thus the price of a security that goes exdividend is expected to drop in this time interval the expected price drop around the ex dividend day has been compared to the dividend per share in various past studies campbell and beranek 1955 durand and may 1960 elton and gruber 1970 kalay 1982 the documented behavior of stock prices around the ex dividend day seems to be consistent with market efficiency that is it provides no profit opportunities an interesting question that arises is whether the discontinuity in the stock price carries over to call options on the stock with similar implications for market efficiency because call options are unprotected against payment of dividends their pricing has to take into account the change in the value of the underlying asset around the ex dividend day this point has been recognized in the literature since it is well known that the price of a share of common stock is expected to drop around the ex dividend day since call options written on such underlying shares are not protected against dividend payment a question arises as to the behavior of the prices of call options around the exdividend day assuming a rational exercise policy on the part of investors it can be demonstrated that the price behavior of american call options around the ex dividend day should not be different from that on any other arbitrarily chosen day however our empirical analysis using both parametric and nonparametric methods indicates that perhaps because of a wrong exercise policy on the part of investors abnormal returns are observed in certain cases this finding casts some doubt on the presumption of efficiency of the american call option market around the exdividend day we wish to thank john long stanley kon clifford smith jeremy bulow and harry friedman for helpful comments on earlier drafts of this paper we are also indebted to david cho and elli kraizberg for their assistance finally the financial support of the salomon brothers center for the study of financial institutions new york university is gratefully acknowledge

time variation of ex dividend day stock returns and corporate dividend capture a reexamination this paper documents some empirical facts about ex day abnormal returns to high dividend yield stocks that are potentially subject to corporate dividend capture we find that average abnormal ex dividend day returns are uniformly negative in each year after the introduction of negotiated commission rates and that time variation in ex day returns during the negotiated commission rates era is consistent with corporate tax based dividend capture ex day returns are more negative when the tax advantage to corporate dividend capture is greatest and more positive when increases in transaction costs and risk reduce incentives to engage in corporate tax based dividend capture copyright the american finance association 2000

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

the social charter of the european community evolution and controversies this study investigates the content status and likely impact of the social charter a declaration of social rights primarily workers rights endorsed by the european community in december 1989 the european commission which initiated the charter has justified the mandated benefits proposed under it as a means for advancing social equality the authors argue however that by raising costs inhibiting employment growth and disproportionately affecting poorer workers and nations the mandated benefits approach is likely to cause less rather than more equity

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

effects of comparable worth policy evidence from washington state comparable worth is a new and controversial policy advocated by groups seeking to close the wage gap between women and men the term is shorthand for equal pay for jobs of comparable worth and refers to a system in which firms are required to set wages for different occupations to reflect differences in the worth of the job usually defined by four characteristics skill effort responsibility and working conditions it may not seem radical to relate wage differentials to such characteristics as skill and working conditions indeed economists have long argued that occupational wage differentials arising in competitive labor markets would reflect factors such as these the controversy arises because of the process by which the contents of jobs are valued under a comparable worth system proponents of comparable worth reject market assignment of value because markets are said to reflect bias against occupations traditionally held by women under comparable worth jobs are typically evaluated by a political process in which committees of consultants and representatives of the employer the union women s groups and others determine the value of jobs it is an important

the employment effect of stricter rules for eligibility for di evidence from a natural experiment in sweden we study the effect of a reform of the swedish disability insurance di program whereby the special eligibility rules for workers in the age group 60 to 64 were abolished first we use a differences in differences approach to study changes in the disability take up as compared to the age group 55 to 59 then we use a similar approach to study to what extent the employment effect of the reform is crowded out by an increase in the utilization of the sickpay insurance si and or the unemployment insurance ui in an extended analysis we study the effect of firm closure on employment and the utilization of different labor market insurance programs in different age groups before and after the reform

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

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

reduction of constraints on arbitrage trading and market efficiency an examination of ex day returns in hong kong after introduction of electronic settlement previous research documents positive ex dividend day returns in excess of one percent in the unique institutional setting of hong kong where neither dividends nor capital gains are taxed short term arbitrage trades around the ex day were hampered by physical settlement procedures after the recent switch to an electronic settlement system which enables such trades ex day abnormal returns have declined to an insignificant 0 17 percent this drop is more pronounced for high yield stocks which are more likely to attract dividend capture trading the evidence points to the crucial role of short term traders in ensuring the pricing efficiency of financial markets the role of short term traders in financial markets is a matter of considerable controversy the debate on this issue has heightened in the wake of the recent asian currency crisis which some governments blamed on the activities of short term traders critics contend that short term traders engage in speculation leading to excessive and debilitating volatility in market prices others argue that short term traders perform a useful role by increasing valuable liquidity berkman and eleswarapu 1998 report that regulatory changes on the bombay stock exchange curbing short term trading had a measurably adverse impact on asset values supporters of short term traders also argue that these traders make a key contribution to the efficiency of financial markets by constantly scouring the markets for arbitrage opportunities this study examines the impact of the

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 valuation of american call options and the expected ex dividend stock price decline abstract this study focuses on the ex dividend stock price decline implicit within the valuation of american call options on dividend paying stocks the roll 1977 american call option pricing formula and the observed structure of cboe call option transaction prices are used to infer the expected ex dividend stock price decline as a proportion of the amount of the dividend the relative decline is shown to be not meaningfully different from one confirming some recent evidence from studies which examined stock prices in the days surrounding ex dividend

ex dividend stock price behavior and arbitrage opportunities this paper investigates the relation between ex dividend stock price behavior and arbitrage oppor tunities in a continuous trading frictionless economy the authors demonstrate that it is possible for the ex dividend stock price drop to differ from the dividend and still short term traders cannot gene rate arbitrage profits the argument is independent of transactions c osts the relevance of this insight to estimating the marginal tax br acket based on ex dividend stock price drops is explored furthermore this insight is also applied to the area of option pricing in which the special class of escrowed dividend stock price processes is stud ied the authors show that most elements from this class of stock pri ce processes generate invalid option pricing formulas copyright 1988 by the university of chicago

comparable worth limited coverage and the exacerbation of inequality citing relevant judicial decisions the author argues that any application of the comparable worth remedy for gender discrimination is likely to cover only certain groups of workers most likely to be covered are women who work for governmental or large private employers in female dominated jobs and least likely to be covered are women who work for small private employers the implementation of comparable worth would cause the wages of noncovered workers to fall relative to those of covered workers and they might even fall absolutely an analysis of 1979 current population survey data suggests that the women most likely to gain from comparable worth are fewer in number better paid and subjected to no greater discrimination than the women most likely to lose

recent developments in social policy in the new european union this paper assesses the recent progress and future direction of labor policy in the european community now the european union the authors show that most of the mandates foreshadowed under the december 1989 community social charter have now been enacted into law they analyze the possible costs as well as the benefits of these firstphase mandates and show the link between these adjustment costs and the community s policy of providing subsidies to its poorer member states they also demonstrate how the new treaty on european union agreed to at maastricht in december 1991 has increased the scope for community level labor market regulation

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

income and substitution effects of a disability insurance reform abstract disability insurance di systems are widely criticized for their inherent work disincentives this paper evaluates the effects of a swiss di reform that aims to lower di benefits for a group of existing di beneficiaries and introduces an additional level to the di benefit schedule the reform has only modest effects on earnings and employment but increases the disability degree of those threatened by a di benefit decline we estimate bounds on the income and substitution effects by employing the principal stratification framework the income effect is quantitatively important whereas the substitution effect is smaller and has bounds that include zero the evidence suggests that caseworkers helped the insured with low labor market attachment to maintain a full di benefit

ex dividend day stock price behavior discreteness or tax induced clienteles abstract since prices are constrained to discrete tick multiples while dividends are essentially continuous ex day price changes will not equal dividends we argue that the expected price drop is strictly less than the dividend but within one tick of the dividend the price drop to dividend ratio will i be less than one ii increase with dividends generally and iii decline between tick multiples giving a sawtooth pattern in the data since dividends and dividend yields are highly correlated discreteness will give the impression of tax induced dividend clienteles even if there are none taxable cash dividends and nontaxable stock dividends exhibit similar ex day behavior

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

risk premia and the ex dividend stock price behavior abstract it has been suggested that the positive abnormal return on ex dividend days may be due in part to the existence of a risk premium the evidence is consistent with the hypothesis that on ex dividend days trading in low dividend yield stocks is dominated by ordinary investors who demand a tax premium for their higher tax liability on ordinary dividends relative to capital gains trading in high dividend yield stocks appears to be dominated by short term traders who obtain a positive unsystematic risk premium finally the structural relationship between rates of return on the one side and dividend yield and risk premia on the other is quite different on ex dividend and other days as well as through time

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

implications of the discreteness of observed stock prices stock prices on the organized exchanges are restricted to be divisible by 1 8 therefore the true price usually differs from the observed price this paper examines the biases resulting from the discreteness of observed stock prices it is shown that the natural estimators of the variance and all of the higher order moments of the rate of returns are biased an approximate set of correction factors is derived and a procedure is outlined to show how the correction can be made the natural estimators of the beta and of the variance of the market portfolio on the other hand are nearly unbiased the behavior of stock prices has been an issue of interest to the financial economist for many years this interest resulted in a growing number of empirical studies which attempt to estimate this behavior e g blattberg and gonedes 2 fama 6 fama and roll 7 8 barnea and downes 1 to date stock price behavior is estimated under the assumption that the observed trading price is the true equilibrium price however observed stock prices and stock price changes on the organized exchanges are restricted to multiples of 1 8 of a dollar 1 therefore if the true distribution of stock prices is continuous an observed trading price can be different from the true price this paper examines the biases in estimating the moments of stock price changes caused by the discreteness of observed stock prices the major focus of the paper is in noting this problem providing a model which explains the source of these biases and quantifying their size section i demonstrates that due to the discrete nature of observed stock prices the natural estimators for the variance and for the higher order moments of the rate of returns are biased upward this bias is larger for stocks with lower prices and smaller standard deviation for instance assuming that the standard deviation a is 0 001 the stock price is one dollar the true probability distribution of stock prices is lognormal and the observed prices are as close as possible to the true prices then the natural estimator of r has expectation 0 01400 hence it is biased upward by 1300 significant biases have important implications in option pricing we derive an approximate set of correction factors which can be applied to the

a microstructure analysis of ex dividend stock price behavior before and after the 1984 and 1986 tax reform acts this article extends ex dividend research by explicitly modeling trading at bid and ask quotations this refinement distinguishes between buying and selling for long term investors and short term dividend capture traders it also explicitly incorporates the bid ask spread and eliminates some potential measurement errors that may bias returns marginal conditions are tested during 1983 and 1988 periods that span the 1984 and 1986 tax reform acts results for long term investors are consistent with the elimination of favorable capital gains tax rates at observed prices tax neutral short term traders cannot profit corporate dividend capture traders face profit opportunities during 1983 that disappear by 1988 copyright 1996 by university of chicago press

dividend capture in nasdaq stocks abstract we examine the importance of dividend capture trading in nasdaq stocks by testing for cross sectional relations between ex day abnormal returns and bid ask spreads throughout we find that ex day returns and spreads are positively related the relation increases across dividend yield quintiles and is strongest in high yield stocks the relation does not appear in a sample of non ex dividend days these findings indicate that dividend capture trading affects the ex day returns of at least some particularly high yield nasdaq stocks and that dividend capture trading is important for understanding ex dividend day returns

internal labour markets causes and consequences the paper analyzes the causes and consequences of internal labor market rules that yield long tenure promotion from within seniority pensions and due process in dismissals about half the workforce are estimated to be in such markets competitive reasons for internal labor markets as a response to specific training and arms length relationships between workers and firms are surveyed these reasons are found to be consistent with the pattern of internal labor markets among non union firms however some internal labor markets e g among small unionized firms are probably a response to union pressure and government regulations in these circumstances low labor mobility could pose problems for policy copyright 1991 by oxford university press

labor costs and the social dumping debate in the european union this study examines the labor cost incentive for capital movement in manufacturing within the european union a key aspect of the social dumping debate in western europe the authors find that the percentage differences in unit labor costs between the more developed and less developed countries in the union not only were large in 1980 but actually grew between 1980 and 1986 and separate estimates of compensation and productivity growth rates do not indicate that significant convergence occurred over the remainder of the 1980s although these findings apparently confirm that a labor cost incentive for capital mobility does exist analysis of foreign direct investment data indicates that during the period 1980 88 capital flows to the lower labor cost countries actually were not much larger than capital flows to the higher labor cost countries

a positive economic theory of regulatory enforcement a positive economic model of regulatory enforcement is developed th at allows the agency to use both legal and informal methods to gain compliance with the law the paper fills a gap in the economic literature on regulation by developing and testing a model of enforcement it also provides a theoretical framework for the recent empirical work of political scientists and sociologists on enforcement practices copyright 1988 by royal economic society