garp for kids on the development of rational choice behavior in this paper we examine the extent to which consumption choices by 7 and 11 year old children and college undergraduates satisfy the axioms of revealed preference we find that choices by even the 7 year olds are considerably more likely to obey revealed preference axioms than would be true if they were choosing randomly 11 year olds do better still while college students do no better than 11 year old children we also find that mathematical ability is not correlated with choosing rationally we argue that this evidence suggests that the ability to choose rationally is not innate but that it does develop quickly

execution risk in high frequency arbitrage in this paper we investigate the role of execution risk in high frequency trading through arbitrage strategies we show that if rational agents face uncertainty about completing their arbitrage portfolios then arbitrage is limited even in markets with perfect substitutes and convertibility using a simple model we demonstrate that this risk arises from the crowding effect of competing arbitrageurs entering the same trade and inflicting negative externalities on each other our empirical results provide evidence that support the relevance of execution risk in high frequency arbitrage this paper was accepted by wei xiong finance

the money pump as a measure of revealed preference violations we introduce a measure of the severity of violations of the revealed preference axioms the money pump index mpi the mpi is the amount of money one can extract from a consumer who violates the axioms it is also a statistical test for the hypothesis that a consumer is rational when behavior is observed with error we present an application using a panel data set of food expenditures the data exhibit many violations of the axioms mostly the mpi for these violations is small the mpi indicates that the hypothesis of consumer rationality cannot be rejected

minimum wage and real wage inequality evidence from pass through to retail prices this paper considers the impact of the minimum wage on both labor and product markets using detailed store level scanner data i provide empirical evidence that a 10 increase in the minimum wage r

a transactions data test of stock index futures market efficiency and index arbitrage profitability this paper investigates the efficiency of the market for stock index futures and the profitability of index arbitrage for the chicago board of trade s major market index contracts the spot value of the index is computed with transactions prices for the component shares of the index obtained from the fitch database the tests account for transaction costs execution lags and the uptick rule for short sales of stocks results indicate that the size and frequency of boundary violations are substantially smaller than those reported by earlier studies and have declined sharply with time index arbitrage is a strategy whereby institutions brokerage houses or other large investors seek to profit from the spread between prices in the spot and futures markets for stock indices for example an investor might purchase predetermined baskets of stocks on the floor of the new york stock exchange and simultaneously sell a related index futures contract on the floor of the chicago board of trade hoping to profit from the price differences on the two exchanges computer programs constantly monitor stock and futures prices and automatically execute buy and sell orders when it appears that a profit is possible stock index futures can be priced by a simple arbitrage argument if the dividends paid by the underlying basket of shares and interest rates are nonstochastic markets are perfect and there are no taxes the pricing equation is

do call prices and the underlying stock always move in the same direction this article empirically analyzes some properties shared by all one dimensional diffusion option models using sp options are not redundant securities nor ideal hedging instruments puts and the underlying asset prices may go down together much of the extant knowledge about option pricing is based on the assumption that the underlying asset price follows a one dimensional diffusion process examples of such option pricing models include the classic black scholes 1973 merton 1973 the cox ross 1976 constant elasticity of variance the ones studied in derman and kani 1994 rubinstein 1994 bergman grundy and wiener 1996 bakshi cao and chen 1997 2000 and dumas fleming and whaley 1998 all models in the one dimensional diffusion class share three basic properties first call prices are monotonically increasing and put prices are monotonically decreasing in the underlying asset price the monotonicity property second as the underlying asset price is the sole source of uncertainty for all of its options option prices must be perfectly correlated with each other and with the underlying asset the perfect

a comparison of nonparametric tests of weak separability for annual and quarterly data on consumption leisure and money among the most fundamental assumptions made in economics are utility maximization and the separability of the arguments in the representative consumer s utility function these assumptions are important for theoretical and empirical applications of economics in this article we present results from nonparametric tests of these assumptions of consumer behavior we find that utility maximization generally obtains with either annual or quarterly per capita data on consumption goods leisure and relatively liquid monetary assets annual data on consumption goods leisure and all monetary assets are consistent with utility maximization there is some evidence in support of using partial adjustment models when estimating quarterly data models of the demand for monetary assets further annual data on consumption goods and leisure and on liquid monetary assets meet the necessary and sufficient conditions for weak separability these results support the notion of a monetary aggregate more broadly based than cu

cross sided liquidity externalities we study the empirical relevance of the participation externality between liquidity suppliers makers and demanders takers i e whether liquidity demand attracts or reduces liquidity supply and vice versa we use exogenous shocks to exchange fees and technology as experiments to identify cross sided complementarities between liquidity suppliers and demanders in the u s equity market we find that the externality is large and positive on average however the externality is negative in periods of high adverse selection we quantify the economic significance of the externality by evaluating an exchange s revenue after a fee change the internet appendix is available at https doi org 10 1287 mnsc 2016 2658 this paper was accepted by lauren cohen finance

on testing the utility hypothesis in order to be able to conduct a test of the core utility hypothesis that is not confounded with tests of subsidiary hypotheses that economic agents all have the same preferences and that their preferences are weakly separable it is necessary to use data that are disaggregated and complete in order to carry out a utility hypothesis test with complete data revealed preference theory must first be extended the generalised axiom of revealed preference is extended to include labour supply and portfolio choice then a complete disaggregated data set is used to test the utility hypothesis and two preference separability hypotheses

the response of expenditures to anticipated income changes panel data estimates standard models of intertemporal allocation predict that the time path of expenditures should be independent of the time path of income recently two papers parker 1999 and souleles 1999 have suggested that u s households have a high marginal propensity to spend within year anticipated income changes we use an expenditure survey panel from spain to re examine this issue we exploit two important features of the spanish data first we have quarterly panel data that follows households for more than four quarters second we use the fact that workers are exogenously sorted into one of two payment schemes some receive the same amount each month of the year and others receive an extra payment in june and december the extra payment is large and predictable we examine the detailed pattern of expenditures over the year to see whether they differ between the two groups we fail to find even weak differences we complement this with a conventional euler equation analysis of excess sensitivity our predicting equation for quarterly earnings growth is much better than usual and is likely to give a powerful test of the hypothesis that predictable changes in income do not lead to changes in expenditure patterns the results of this analysis confirm the graphical analysis we find no evidence of excess sensitivity we conclude that households in normal times do smooth consumption over the year we suggest a reconciliation of our results with those of parker and souleles

a new approach to decomposition of economic time series into permanent and transitory components with particular attention to measurement of the business cycle abstract this paper introduces a general procedure for decomposition of non stationary time series into a permanent and transitory component allowing both components to be stochastic the permanent component is shown to be a random walk with drift and the transitory or cyclical component is a stationary process with mean zero the decomposition methodology which depends only on past data and therefore is computable in real time is applied to the problem of measuring and dating business cycles in the portwar u s economy we find that measured expansions and contractions are of roughly equivalent duration and that our dating of cyclical episodes tends to lead the traditional nber dating and to a lesser extent the growth cycle chronology of zarnowitz and boschan 1977

an experiment on the pure theory of consumer s behaviour by checking whether consumer demand satisfies the axioms of revealed preference one can test the empirical validity of the neoclassical theory of consumer behaviour however applying the axioms to actual consumer purchase data is difficult if not impossible since it poses serious problems of both a methodological and a practical nature after commenting on the few existing empirical studies in this field we summarise the results from an experimental approach to revealed preference theory data were obtained through a controlled experiment that involved real consumption of the goods chosen we find that most subjects violated the axioms

order consolidation price efficiency and extreme liquidity shocks we show that the consolidation of orders is important for producing efficient prices especially during times of high liquidity demand the nyse s centralized opening call market performs better than nasdaq s decentralized opening process on typical trading days the nyse is much better than nasdaq on witching days when index arbitrage activity subjects s p 500 stocks to large predictable and mostly informationless order flow around quarterly futures contract expirations nasdaq opening price efficiency improves to nyse levels once nasdaq initiates a consolidated opening call in november 2004 but prices on the decentralized nasdaq remain less efficient at other times of day

liquidity risk and exchange traded fund returns variances and tracking errors abstract we investigate the effect of exchange traded fund etf liquidity on etf tracking errors returns and volatility in the us we find that illiquid etfs have large tracking errors the effect is more pronounced when underlying assets are less liquid returns and liquidity of illiquid etfs are more sensitive to underlying index returns or etf market liquidity or both thus a positive liquidity premium exists in us etf markets the etf variance could be larger than its net asst value variance owing to infrequent trading in summary illiquid etfs are more likely to deviate from their underlying indexes and could be riskier than underlying portfolios

full scale real tests of consumer behavior using experimental data abstract this paper reports on the results of three experiments based on the neoclassical theory of consumer behavior all these experiments were carried out with the aim of simulating real world behavior nonparametric tests applying the theory of revealed preference show that a significant number of individuals exhibit inconsistent behavior if nearly optimizing behavior is postulated then most of these inconsistencies disappear but random choices produce almost the same results the hypothesis of a representative consumer statistical average behavior seems a more fruitful approach

the temporal price relationship between s p 500 futures and the s p 500 index this paper empirically examines the intraday price relationship between s p 500 futures and the s p 500 index using minute to minute data three stage least squares regression is used to estimate lead and lag relationships with estimates for expiration days of the s p 500 futures compared with estimates for days prior to expiration the results suggest that futures price movements consistently lead index movements by twenty to forty five minutes while movements in the index rarely affect futures beyond one minute

non parametric tests of consumer behaviour the neoclassical model of consumer behaviour postulates that a consumer s choice behaviour can be described as deriving from utility maximization subject to a budget constraint one is then naturally led to ask what this model implies about observed behaviour this question has been addressed from two quite distinct approaches the first approach originating in the work of slutsky 1915 and antonelli 1886 derives necessary and sufficient conditions involving the derivatives of the demand functions the second approach originating in the work of samuelson 1938 1947 1948 derives algebraic conditions on the demand functions implied by maximizing behaviour

a further analysis of the lead lag relationship between the cash market and stock index futures market the intraday lead lag relation between returns of the major market cash index and returns of the major market index futures and s p 500 futures is investigated empirical results show strong evidence that the futures leads the cash index and weak evidence that the cash index leads the futures the asymmetric lead lag relation holds between the futures and all component stocks including those that trade in almost every five minute interval evidence indicates that when more stocks move together market wide information the futures leads the cash index to a greater degree this suggests that the futures market is the main source of market wide information article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

measuring rationality with the minimum cost of revealed preference violations abstract we introduce a new measure of how close a set of choices is to satisfying the observable implications of rationality and apply it to a large balanced panel of household level consumption data this new measure the minimum cost index is the minimum cost of breaking all revealed preference cycles found in choices from budget sets unlike existing measures of rationality it responds to both the number and severity of revealed preference violations

currency momentum carry trade and market illiquidity this study empirically examines the effect of equity market illiquidity on the excess returns of currency momentum and carry trade strategies results show that equity market illiquidity explains the evolution of currency momentum strategy payoffs but not carry trade returns on currency momentum are low following months of high equity market illiquidity however in the recent decade illiquidity positively predicts the associated payoffs the findings withstand various robustness checks and are economically significant approximating in value to one third of average monthly profits

how demanding is the revealed preference approach to demand a well known problem with revealed preference methods is that when data are found to satisfy their restrictions it is hard to know whether this should be viewed as a triumph for economic theory or a warning that these conditions are so undemanding that almost anything goes this paper allows researchers to make this distinction our approach uses an axiomatic characterization of a measure of predictive success due to selten 1991 we illustrate the idea using a panel dataset the results show that this approach can lead us to radically reassess our view of the empirical performance of economic theory

taxes organizational form and the deadweight loss of the corporate income tax abstract by changing the relative gain to incorporation corporate taxation can play an important role in a firm s choice of organizational form general equilibrium models have shown that substantial shifting of organizational form in response to tax rates implies a large deadweight loss of taxation this paper estimates the impact of taxes on organizational form using data from 1900 1939 the results indicate that the effect of taxes is significant but small a corporate rate increase of 0 10 raises the non corporate share of capital 0 002 0 03 the implied deadweight loss of the corporate income tax is around 5 10 of revenue

stock index futures and index arbitrage in a rational expectations model this article analyzes the role of stock index futures and index arbitrage in a rational expectations economy with competitive stock and futures markets a simple model is developed with three types of agents who besides having different trading motives have unequal access to markets among these agents only index arbitrageurs can trade on both markets and thus engage in arbitrage the article characterizes the impact of index arbitrage on equilibrium prices volatilities and welfare it is shown that index arbitrage is a risk reallocating and price correcting mechanism its impact on price stability is shown to be dependent on the relative variability of aggregate supply in the respective markets index arbitrage also transmits information across markets copyright 1991 by university of chicago press

covered interest arbitrage profits the role of liquidity and credit risk we study the profitability of covered interest parity cip arbitrage violations and their relationship with market liquidity and credit risk using a novel and unique dataset of tick by tick firm quotes for all financial instruments involved in the arbitrage strategy the empirical analysis shows that positive cip arbitrage deviations include a compensation for liquidity and credit risk once these risk premia are taken into account small arbitrage profits only accrue to traders who are able to negotiate low trading costs the results are robust to stale pricing and the nonsynchronous trading occurring in the markets involved in the arbitrage strategy

revealing preferences graphically an old method gets a new tool kit because uncertainty is endemic in a wide variety of economic circumstances models of decision making under uncertainty play a key role in every field of economics the standard model of decisions under uncertainty is based on von neumann and morgenstern expected utility theory eut so it is natural that experimentalists should want to test the empirical validity of the savage axioms on which eut is based empirical violations of eut provoke intriguing questions about the rationality of individual behavior and at the same time raise criticisms about the status of the savage axioms as the touchstone of rationality these criticisms have generated the development of various theoretical alternatives to eut and the investigation of these theories has led to new empirical regularities for the most part these experimental investigations use several pairwise choices a la allais to test eut and its various alternatives such as weighted utility implicit expected utility and prospect theory among others each of these theories gives rise to indifference curves with distinctive shapes in some part of the marschak machina probability triangle so each theory can be tested against the others by choosing alternatives that the various theories rank differently in these studies the criterion used to evaluate a theory is the fraction of choices it predicts correctly generally speaking experimental work has on the one hand collected only a few decisions from each subject and on the other presented subjects with a serious of choices designed to compare the predictive abilities of competing theories or discover violations of specific axioms colin f camerer 1995 and chris starmer 2000 review the experimental and theoretical work that focuses on evaluating non eut theories although this practice is understandable given the purposes for which the experiments were designed critics say that it limits the usefulness of the data for other purposes first while these experiments reveal that violations exist they give us little sense of how important they are or how frequently they

information and index arbitrage a random cash futures basis is derived in a dynamic multimarket learning game with sequential information shocks and strategic arbitrageurs who trade to exploit gaps in the basis statistical properties of the authors theoretical basis are derived both with and without index arbitrage the authors find that basis volatility a measure of intermarket mispricing may initially increase even as individual prices become more precise and that arbitrage reduces basis volatility the model is also used to analyze regulatory issues such as the possible impact of circuit breakers on the quality of the trading process copyright 1994 by university of chicago press

stock prices and volume the authors undertake a comprehensive investigation of price and volume co movement using daily new york stock exchange data from 1928 to 1987 they adjust the data to take into account well known calendar effects and long run trends to describe the process they use a seminonparametric estimate of the joint density of current price change and volume conditional on past price changes and volume four empirical regularities are found 1 positive correlation between conditional volatility and volume 2 large price movements are followed by high volume 3 conditioning on lagged volume substantially attenuates the leverage effect and 4 after conditioning on lagged volume there is a positive risk return relation article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

the microeconomics of market making this paper examines the influence of risk aversion on the pricing policies of a market maker for securities it is shown that a market maker s bid ask spread can be decomposed into a portion for the known limit orders a risk neutral adjustment for expected market orders and a risk adjustment for market order and inventory value uncertainty it is dem onstrated that a risk averse market maker may set a smaller spread than a risk neutral specialist finally this paper demonstrates the pervasive role of inventory in affecting both the placement and size ofthe spread

measuring true stock index value in the presence of infrequent trading based on the beveridge nelson 1981 decomposition of an arima process i present a measure of true stock index value that is not directly observable due to infrequent trading of stocks the technique is illustrated with daily observations of the russell 2000 index this new measure might well prove useful in studies of lead lag relationships between index derivatives and spot market and futures basis measurements

nonparametric engel curves and revealed preference this paper applies revealed preference theory to the nonparametric statistical analysis of consumer demand knowledge of expansion paths is shown to improve the power of nonparametric tests of revealed preference the tightest bounds on indifference surfaces and welfare measures are derived using an algorithm for which revealed preference conditions are shown to guarantee convergence nonparametric engel curves are used to estimate expansion paths and provide a stochastic structure within which to examine the consistency of household level data and revealed preference theory an application is made to a long time series of repeated cross sections from the family expenditure survey for britain the consistency of these data with revealed preference theory is examined for periods of consistency with revealed preference tight bounds are placed on true cost of living indices

arbitrage in stock index futures the textbook description of arbitrage suggests that it is a straightforward matter of taking offsetting positions in different securities and realizing the arbitrage profit such descriptions however typically ignore the transaction costs that give rise to the arbitrage opportunity in the first place taking proper account of these transactions costs may considerably complicate the problem particularly when as is usually the case the arbitrage potential is restricted this article is concerned withoptimal arbitrage strategies with transaction costs when the arbitrage potential is restricted by position limits the particular case we shall analyze is the standard and poor s sp the corresponding figure for the s p 500 portfolio for the same period was

transactions volume and volatility we show that the positive volatility volume relation documented by numerous researchers actually reflects the positive relation between volatility and the number of transactions thus it is the occurrence of transactions per se and not their size that generates volatility trade size has no information beyond that contained in the frequency of transactions our results suggest that theoretical research needs to entertain scenarios in which 1 both the frequency and size of trades are endogenously determined yet 2 the size of trades has no information content beyond that contained in the number of transactions article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

trade execution costs and market quality after decimalization this study assesses trade execution costs and market quality for nyse and nasdaq stocks before and after the 2001 change to decimal pricing several theoretical predictions are confirmed quoted bid ask spreads declined substantially on each market with the largest declines for heavily traded stocks the percentage of shares receiving price improvement increased on the nyse but not on nasdaq however those trades completed at prices within or outside the quotes were improved or disimproved by smaller amounts after decimalization and trades completed outside the quotes saw the largest reductions in trade execution costs as a class effective bid ask spreads as a percentage of share price arguably the most relevant measure of execution costs for smaller trades averaged 0 33 on a volume weighted basis after decimalization for both nyse and nasdaq stocks there is no evidence of systematic intraday reversals of quote changes on either market as would be expected if decimalization had damaged liquidity supply

a regime switching approach for hedging tanker shipping freight rates tanker shipping is the primary means for the transportation of petroleum and petroleum products around the world and thus plays a crucial role in the energy supply chain however the high volatility of tanker freight rates has been a major concern for market participants and led to the development of the tanker freight derivatives in the form of forward freight agreements ffas the aim of this paper is to investigate the performance of these instruments in managing tanker freight rate risk using a data set for six major tanker routes covering the period between 2005 and 2013 we examine the effectiveness of alternative hedging methods including a bivariate markov regime switching garch model in hedging tanker freight rates the regime switching garch specification links the concept of equilibrium freight rate determination underlying different market conditions and the dynamics of the conditional second moments across high and low volatility regimes overall we find evidence supporting the argument that the tanker freight market is characterized by different regimes however while the use of a regime switching model allows for a significant improvement in the performance of the hedge in sample out of sample results are mixed

index futures arbitrage and the behavior of stock index futures prices this article examines intraday transaction datafor s p 500 stock indexfutures prices and the intraday quotes for the underlying index the data indicate that thefutures price changes are uncorrelated and that the variability of these price changes exceeds the variability ofprice changes in the s p 500 index this excess variability of the futures over the index remains even after controlling for the nonsynchronous prices in the index quotes which induces autocorrelation in the index changes we advance and examine empirically two hypotheses regarding the difference between the futures price and its theoretical value that this mispricing increases on average with maturity and that it is path dependent evidence supporting these hypotheses is presented

a measure of rationality and welfare evidence showing that individual behavior often deviates from the classical principle of preference maximization has raised at least two important questions 1 how serious are the deviations 2 what is the best way to analyze choice behavior in order to extract information for the purpose of welfare analysis this paper addresses these questions by proposing a new way to identify the preference relation that is closest in terms of welfare loss to the revealed choice

order imbalance liquidity and market returns traditionally volume has provided the link between trading activity and returns we focus on a hitherto unexplored but intuitive measure of trading activity the aggregate daily order imbalance on the new york stock exchange signed order imbalances increase decrease following market declines rises which reveals that investors are contrarians on aggregate order imbalances in either direction either excess buy or sell orders reduce liquidity market wide returns are strongly affected by contemporaneous and lagged order imbalances market wide returns reverse themselves after high negative imbalance large negative return days the magnitude of this reversal is partially predictable from the level of the imbalance and return even after controlling for aggregate market volume and liquidity market returns are affected by order imbalance

futures trading activity and stock price volatility we examine whether greater futures trading activity volume and open interest is associated with greater equity volatility we partition each trading activity series into expected and unexpected components and document that while equity volatility covaries positively with unexpected futures trading volume it is negatively related to forecastable futures trading activity further though futures trading activity is systematically related to the futures contract life cycle we find no evidence of a relation between the futures life cycle and spot equity volatility these findings are consistent with theories predicting that active futures markets enhance the liquidity and depth of the equity markets

homothetic efficiency theory and applications we provide a nonparametric revealed preference approach to demand analysis based on homothetic efficiency homotheticity is widely assumed often implicitly because it is a convenient and often useful restriction however this assumption is rarely tested and data rarely satisfy testable conditions to overcome this we provide a way to estimate homothetic efficiency of consumption choices the method provides considerably higher discriminatory power against random behavior than the commonly used afriat efficiency we use experimental and household survey data to illustrate how our approach is useful for different empirical applications and can provide greater predictive success

the contingent effect of management practices this article investigates how the success of a management practice depends on the underlying values articulated by the management a large u s transportation company is in the process of fitting its trucks with an electronic on board recorder eobr to provide drivers with information on their driving performance the company also has commenced a multi year initiative to remake its internal operations the first phase of which focuses exclusively on changing values toward a greater emphasis on teamwork and empowerment in this setting a natural question is whether the optimal managerial practice consists of 1 letting each driver know his or her individual performance only or also 2 providing drivers with information about their performance with respect to other drivers using the eobr provided driver performance data we randomize these practices across sites the main result of our experiment is that 2 leads to better performance than 1 in a particular site if and only if the site has not yet received the values intervention and worse performance if it has the result is consistent with the presence of a conflict between competition based managerial practices and a shift to a cooperation based value system more broadly it highlights the role of intangible factors in determining the optimal set of managerial practices

the domino effect of credit defaults test of asymmetric default correlations using realised default data using the research framework of a domino effect in firms we first make theoretical contributions by addressing several testable hypotheses regarding asymmetrical default correlations we then employ lucas s method to provide empirical evidence based on realised historical default data in the united states from 1992 to 2013 our empirical results are consistent with the following notions first default correlations increase with the time horizon second firms with low credit quality small size illiquidity and a high beta exhibit higher default correlations credit risk management without considering asymmetrical default correlations could underestimate portfolio risk due to default clustering

mean reversion of standard poor s 500 index basis changes arbitrage induced or statistical illusion mean reversion in stock index basis changes has been presumed to be driven by the trading activity of stock index arbitragers we propose here instead that the observed negative autocorrelation in basis changes is mainly a statistical illusion arising because many stocks in the index portfolio trade infrequently even without formal arbitrage reported basis changes would appear negatively autocorrelated as lagging stocks eventually trade and get updated the implications of this study go beyond index arbitrage however our analysis suggests that spurious elements may creep in whenever the price change or return series of two securities or portfolios of securities are differenced mean reversion in stock index basis changes has been amply documented mackinlay and ramaswamy 1988 find significant negative first order autocorrelation in normalized intraday basis changes of the s p 500 index futures traded on the chicago mercantile exchange cme yadav and pope 1990 find similar behavior using financial times stock exchange ftse 100 index futures data from the london international financial futures exchange liffe as does lim 1990 using nikkei 225 index futures from the singapore international monetary exchange simex the trading activity of stock index arbitragers has been presumed to be driving this elastic realignment of stock index and index futures prices when the basis widens beyond its theoretical level arbitragers simultaneously sell index futures and buy the index portfolio pulling the difference between the futures and index

do etfs increase volatility due to their low trading costs exchange traded funds etfs are a potential catalyst for short horizon liquidity traders the liquidity shocks can propagate to the underlying securities through the arbitrage channel and etfs may increase the nonfundamental volatility of the securities in their baskets we exploit exogenous changes in index membership and find that stocks with higher etf ownership display significantly higher volatility etf ownership increases the negative autocorrelation in stock prices the increase in volatility appears to introduce undiversifiable risk in prices because stocks with high etf ownership earn a significant risk premium of up to 56 basis points monthly

nonparametric tests of utility maximization and weak separability for consumption leisure and money some of the most fundamental assumptions of economics are utility maximization and weak separability of the arguments in the represen tative consumer s utility function this paper contains results from nonparametric tests of these assumptions about consumer behavior the authors find that quarterly per capita data on consumption goods le isure and monetary assets are consistent with utility maximization further consumption goods and leisure meet necessary and sufficient conditions for weak separability additionally one grouping of relat ively liquid monetary assets meets the necessary conditions for weak separability they also test and find no evidence of homothetic prefe rences copyright 1987 by mit press

trade size order imbalance and the volatility volume relation abstract this paper examines the roles of the number of trades size of trades and order imbalance buyer versus seller initiated trades in explaining the volatility volume relation for a sample of nyse and nasdaq stocks our results reconfirm the significance of the size of trades beyond that of the number of trades in the volatility volume relation on both markets after controlling for the return impact of order imbalance the volatility volume relation becomes much weaker for nyse stocks the order imbalance in large trade size categories affects the return more than in smaller size categories for nasdaq stocks the largest return impact comes from the order imbalance in maximum sized small order execution system soes trades

direct tests of index arbitrage models previous tests of stock index arbitrage models have rejected the no arbitrage constraint imposed by these models this paper provides a detailed analysis of actual s p 500 arbitrage trades and directly relates these trades to the predictions of index arbitrage models an analysis of arbitrage trades suggests that i short sale rules are unlikely to affect the cashfutures mispricing ii the opportunity cost of arbitrage funds exceeds the treasury bill rate and iii the average price discrepancy captured by arbitrage trades is small tests of the models provide some support for a version ofthe arbitrage model that incorporates an early liquidation option the ability of these models to explain arbitrage trades however is surprisingly low

whither armington trade models the armington trade model distinguishes commodities by country of origin and import demand is determined in a separable two step procedure this framework has been applied to numerous international agricultural markets with the objective of modeling import demand in addition computable general equilibrium cge models commonly employ the armington formulation in the trade linkage equations the purpose of this paper is to test the armington assumptions of homotheticity and separability with data from the international cotton and wheat markets both parametric and nonparametric tests were performed and the empirical results reject the armington assumptions this has important implications for international trade modeling and cge modeling

taxes financial decisions and organizational form evidence from publicly traded partnerships abstract publicly traded partnerships ptps also known as master limited partnerships are similar to u s corporations yet they are not subject to corporate taxes given their mixture of corporate and partnership characteristics ptps provide an experiment for studying taxation and firm financial decisions this paper compares the financial structure and dividend policies of ptps and corporations in the oil and gas exploration industry the results are consistent with hypotheses about taxes and financial decisions controlling for other factors ptps pay more dividends and borrow less than similar corporations

consistency and heterogeneity of individual behavior under uncertainty by using graphical representations of simple portfolio choice problems we generate a very rich dataset to study behavior under uncertainty at the level of the individual subject we test the data for consistency with the maximization hypothesis and we estimate preferences using a two parameter utility function based on faruk gul 1991 this specification provides a good interpretation of the data at the individual level and can account for the highly heterogeneous behaviors observed in the laboratory the parameter estimates jointly describe attitudes toward risk and allow us to characterize the distribution of risk preferences in the population

liquidity and the law of one price the case of the futures cash basis deviations from no arbitrage relations should be related to market liquidity because liquidity facilitates arbitrage at the same time a wide futures cash basis may trigger arbitrage trades and in turn affect liquidity we test these ideas by studying the dynamic relation between stock market liquidity and the index futures basis there is evidence of two way granger causality between the short term absolute basis and liquidity and liquidity granger causes longer term absolute bases shocks to the absolute basis predict future stock market liquidity the evidence suggests that liquidity enhances the efficiency of the futures cash pricing system copyright 2007 by the american finance association

how much do taxes discourage incorporation the double taxation of corporate income should discourage firms from incorporating we investigate the extent to which the aggregate allocation of assets and taxable income in the united states between corporate and noncorporate firms responds to the size of this tax distortion during the period 1959 1986 in theory profitable firms should shift out of the corporate sector when the tax distortion is large and conversely for firms with tax losses our empirical results provide strong support for these forecasts and imply that the resulting excess burden equals 16 percent of business tax revenue one of the most basic distortions created by the double taxation of corporate income in the united states is the disincentive to incorporate even in most countries with integrated or partially integrated tax systems there are differential taxes across organizational forms however obvious this distortion may be most articles investigating the distortions created by the corporate tax have taken as exogenous a firm s choice whether or not to incorporate assuming for example that some industries are inherently corporate while others are inherently noncorporate a variety of nontax factors described below can certainly influence a firm s choice of organizational form causing some to favor incorporating and others not but are these nontax factors so dominant that taxes do not in practice influence a firm s choice of organizational form as gravelle and kotlikoff 1989 1993 emphasize tax induced changes in firms choices of organizational form in principle can create large excess burdens the size of these excess burdens in practice depends on the extent to which firms respond to these tax incentives in this article we calculate how the tax distortion discouraging firms from incorporating has varied over time then estimate the extent to which the allocation of assets and taxable income between corporate and noncorporate