clustering and competition in asset markets economists financial commentators regulatory agencies and the legal community have recently criticized the nasdaq stock market inc because there is greater clustering of stock quotations on even eighths on nasdaq than on the new york stock exchange or the american stock exchange a phenomenon which critics attribute to collusion or some other defect in nasdaq market structure however as this article demonstrates clustering occurs in varying degrees in many other incontestably competitive financial markets including the nyse the amex the london stock exchange the london gold market and the international foreign exchange market this article provides a competitive theory of clustering that emphasizes the effect of uncertainty the size of transactions volatility and the informational and transactional roles of quotations on the degree of clustering in addition the article examines how market structure can affect the degree of clustering and considers the relation between clustering spread

discounting and underpricing in seasoned equity offers abstract expected discounting in seasoned equity offers is a cost of uncertainty about firm value marketing new shares and acquiring information that raises the offer price stockholders incorporate predictable discounting in stock prices when equity offers are first announced the surprise component of discounting reflecting the lead bank s final adjustment to the offer price releases information that often causes economically large price swings on the offer day disparities between the issuer s closing price and the price suggested in the lead bank s final order book are a primary source of information the discount surprise appears to be used by lead banks to update capital suppliers with that eleventh hour information before they commit their funds

decomposition of moral hazard this study seeks to simulate the portion of moral hazard that is due to the income transfer contained in the coinsurance price reduction healthcare spending of uninsured individuals from the meps with a priority health condition is compared with the predicted counterfactual spending of those same individuals if they were insured with either 1 a conventional policy that paid off with a coinsurance rate or 2 a contingent claims policy that paid off by a lump sum payment upon becoming ill the lump sum payment is set to be equal to the insurer s predicted spending under the coinsurance policy the proportion of moral hazard that is efficient is calculated as the proportion of total moral hazard that is generated by this lump sum payment we find that the efficient proportion of moral hazard varies from disease to disease but is the highest for those with diabetes and cancer

one security many markets determining the contributions to price discovery when homogeneous or closely linked securities trade in multiple markets it is often of interest to determine where price discovery the incorporation of new information occurs this article suggests an econometric approach based on an implicit unobservable efficient price common to all markets the information share associated with a particular market is defined as the proportional contribution of that market s innovations to the innovation in the common efficient price applied to quotes for the thirty dow stocks the technique suggests that the preponderance of the price discovery takes place at the new york stock exchange nyse a median 92 7 percent information share although most of the classic paradigms in market microstructure concern a security that trades in a single centralized market such situations are becoming increasingly rare in practice fragmentation the dispersal of trading in a security to multiple sites has emerged as a dominant institutional trend this process is of concern to financial economists and regulators because price information and price discovery the impounding of new information into the security price arguably the most important products of a security market have many attributes of public goods as the process of fragmentation accelerates it may be important to determine where the price information and price discovery are being produced 1 this paper suggests a practical econometric approach to this problem the technique is illustrated with an application to u s equity markets many stocks listed on the new york stock exchange nyse trade concurrently on the regional exchanges and the national association of securities dealers national market system nasd nms since a share of ibm stock is the same security whether purchased on the midwest or pacific exchange this is a particularly clear instance of multiple markets nevertheless the expres

a day end transaction price anomaly a large mean price change is observed on the last daily nyse transaction this suggests that closing prices may not consistently represent stock values transaction prices are studied to further characterize the day end price rise and to determine whether it is due to any limited subsample of stocks or dates the results indicate that the phenomenon is pervasive over most firms and days some evidence suggests that it is caused by a change in the frequency of ask prices at day end

issuing costs to existing shareholders in competitive and negotiated underwritten public utility equity offerings abstract this paper presents the results of an empirical investigation of whether there is any difference in the cost incurred by public utilities if they issue new equity through a negotiated or competitive underwriting we conclude that the expected cost of a competitive offer is less than the expected cost of a negotiated offer but that the variance of the cost is substantially greater with a competitive offer these results are interesting because most public utilities use negotiated underwriting unless forced by regulation to use competitive offers this paper is also an addition to the growing agency theory literature

speculative prices and popular models t he rational expectations revolution in economics was born of the recognition that the expectations people hold for future economic variables are fundamental to their behavior thus our economists economic models require their those who make up the economy economic models models which they use to generate their expectations the key idea of rational expectations models is to collapse the two models into one to assume that people know or behave as if they know the true model that describes the economy this idea allows economists to construct simple and elegant models of the economy models that are appealing theoretically and that can be studied without collecting any data about the models in the minds of economic actors the problem with the rational expectations models is that collapsing the two kinds of models into one is a gross oversimplification obviously the popular models the models that are used by the broad masses of economic actors to form their expectations are not the same as those held by economists once one accepts the difference economic modelling cannot proceed without collecting data on the popular models themselves this paper reports on such a data collection effort on popular models using questionnaire survey methods with the purpose of understanding speculative markets i will report here on my research to understand the u s stock market crash of october 1987 research fumiko konya yoshiro tsutsui and i undertook to understand the japanese stock market crash of october 1987 research karl case and i undertook to understand recent real estate booms and research john pound and i undertook to understand the periodic hot markets for initial public offerings ipo s of common stock

two stage residual inclusion estimation addressing endogeneity in health econometric modeling the paper focuses on two estimation methods that have been widely used to address endogeneity in empirical research in health economics and health services research two stage predictor substitution 2sps and two stage residual inclusion 2sri 2sps is the rote extension to nonlinear models of the popular linear two stage least squares estimator the 2sri estimator is similar except that in the second stage regression the endogenous variables are not replaced by first stage predictors instead first stage residuals are included as additional regressors in a generic parametric framework we show that 2sri is consistent and 2sps is not results from a simulation study and an illustrative example also recommend against 2sps and favor 2sri our findings are important given that there are many prominent examples of the application of inconsistent 2sps in the recent literature this study can be used as a guide by future researchers in health economics who are confronted with endogeneity in their empirical work

private insurance selection and health care use observed differences in medical utilization between the privately insured and uninsured reflect the combined effects of self selection and insurance incentives moral hazard this article provides a bayesian framework for decomposing the disparity into incentive and selection components the effect of self selection in private insurance on the number of doctor visits is estimated using a multiyear sample of the u s adult non medicare population obtained from the medical expenditure panel survey we use a flexible econometric framework based on the roy model and develop a markov chain monte carlo algorithm we estimate the distribution of treatment effects and find strong evidence indicating selection which accounts on average for 50 or more of the observed disparity in doctor visits

stock price clustering and discreteness stock prices cluster on round fractions clustering increases with price level and volatility and decreases with capitalization and transaction frequency clustering is pervasive price clustering will occur if traders use discrete price sets to simplify their negotiations exchange regulations require that most stocks be traded on eighths clustering on larger fractions will occur if traders choose to use discrete price sets based on quarters halves or whole numbers an econometric model of clustering is derived and estimated projections from the results suggest that traders would frequently use odd sixteenths when trading low price stocks if exchange regulations permitted trading on sixteenths article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

intermarket sweep order trade size clustering around corporate announcements investors have different trade size preferences depending on their information advantage using intermarket sweep orders isos we find that investors appear to prefer using small round lot trade

penny wise dollar foolish buy sell imbalances on and around round numbers this paper provides evidence that stock traders focus on round numbers as cognitive reference points for value using a random sample of more than 100 million stock transactions we find excess buying selling by liquidity demanders at all price points one penny below above round numbers further the size of the buy sell imbalance is monotonic in the roundness of the adjacent round number i e largest adjacent to integers second largest adjacent to half dollars etc conditioning on the price path we find much stronger excess buying selling by liquidity demanders when the ask falls bid rises to reach the integer than when it crosses the integer we discuss and test three explanations for these results finally 24 hour returns also vary by price point and buy sell imbalances are a major determinant of that variation across price points buying selling by liquidity demanders below above round numbers yield losses approaching 1 billion per year this paper was accepted by brad barber teck ho and terrance odean special issue editors

the optimal spread and offering price for underwritten securities abstract the paper develops the net proceeds maximization theory explaining how the spread and offering price are determined in all underwritten offerings in the u s the theory yields solutions for the optimal spread and offering price for all underwritten securities and it yields comparative statics that explain the cross sectional variation in actual spreads and initial returns across different types of underwritten securities the theory also suggests two alternative explanations to the ones offered by chen and ritter j finance 55 2000 1105 for the clustering of unseasoned equity offerings spreads at 7

decomposing liquidity along the limit order book abstract in this paper we estimate the asymmetric information and order processing components of liquidity at extended depths along the limit order book using data from the inet ecn we find that the asymmetric information component decreases as depth increases inactive stocks have more information asymmetry at the inside quotes but it decreases more rapidly along the book than for active stocks the order processing component of liquidity has fixed and variable constituents consistent with a fixed cost per order as well as a variable portion based on the size of the order

much ado about two reconsidering retransformation and the two part model in health econometrics in health economics applications involving outcomes y and covariates x it is often the case that the central inferential problems of interest involve e y x and its associated partial effects or elasticities many such outcomes have two fundamental statistical properties y 0 and the outcome y 0 is observed with sufficient frequency that the zeros cannot be ignored econometrically this paper 1 describes circumstances where the standard two part model with homoskedastic retransformation will fail to provide consistent inferences about important policy parameters and 2 demonstrates some alternative approaches that are likely to prove helpful in applications

money demand and the effects of fiscal policies this paper reexamines the choice of the scale variable in the money demand function a variety of evidence suggests that consumer spending is a better scale variable than gnp changing the money demand specification along these lines can profoundly affect the standard keynesian analysis of a tax cut copyright 1986 by ohio state university press

endogenous growth and government debt the feasibility of the policy of perpetual debt financing given a particular path for expenditures and taxation has been questioned over the years sargent and wallace 17 argue that such a policy is not feasible in the sense that the debt gnp ratio will explode mccallum 8 and darby 2 argue that this policy will be feasible if and only if the long run growth rate of gnp exceeds the after tax real interest rate this particular condition was derived under the assumption of ricardian equivalence where the growth rate of gnp and the interest rate are exogenously given and are not affected by the path of debt miller and sargent 9 and weil 20 make the point that once the assumption of ricardian equivalence is dropped then simple comparisons of long run growth rates and interest rates are not sufficient to determine stability tirole 19 and o connell and zeldes 10 demonstrate in diamond s 3 model without ricardian equivalence that ponzi games such as this are feasible if and only if the economy is dynamically inefficient without debt all of these studies assume that the long run growth rate of gnp is exogenously given this assumption is particularly strong in the absence of ricardian equivalence in a separate literature a new generation of equilibrium growth models has recently been developed with positive sustained growth in the long run equilibrium in these models long run growth is endogenously determined rather than being imposed on the model as some exogenously given process 7 11 12 14 15 1 all of these models find some way of introducing increasing returns to scale into the neoclassical growth model and yet preserving the fact that it can be interpreted as a decentralized equilibrium this paper considers the feasibility of perpetual debt financing in an economy where the growth rate of gnp is endogenously determined and is a function of debt levels the model of endogenous growth presented here is a modified version of the one given in prescott and boyd 12 this particular model is chosen for two reasons first agents live for finite lengths of time so ricardian equivalence will not hold in general in this model also the production function is linear in the capital stock as will become clear below this implies that the equilibrium paths of the state variables can be characterized as first order linear difference equations

signalling and the pricing of new issues this paper develops a signalling model with two signals two attributes and a continuum of signal levels and attribute types to explain new issue underpricing both the fraction of the new issue retained by the issuer and its offering price convey to investors the unobservable intrinsic value of the firm and the variance of its cash flows many of the model s comparative statics results are novel empirically testable and consistent with the existing empirical evidence on new issues in particular the degree of underpricing which can be inferred from observable variables is positively related to the firm s post issue share price

an empirical examination of models of contract choice in initial public offerings this study examines initial public offering contract choice decisions in best efforts offerings minimum sales constraints allow issuers to precommit to withdraw the offering if a fixed minimum number of shares is not sold in firm commitment offerings the over allotment option allows the underwriter to increase sales when demand is strong two theories of contract choice benveniste and spindt 1989 and ritter s 1987 extension of rock 1986 offer predictions about the role of these contract features we find that the 1977 1982 evidence is consistent with benveniste and spindt 1989 the evidence is less supportive of the ritter 1987 hypothesis that minimum sales constraints serve to reduce the winner s curse of the riskier issuers

price clustering of chinese ipos the impact of regulation cultural factors and negotiation abstractduring june 2009 may 2012 the china securities regulatory commission csrc suspended window guidance that limits issue prices using this regime change as a natural experiment we test th

the rand health insurance experiment three decades later we re present and re examine the analysis from the famous rand health insurance experiment from the 1970s on the impact of consumer cost sharing in health insurance on medical spending we begin by summarizing the experiment and its core findings in a manner that would be standard in the current age we then examine potential threats to the validity of a causal interpretation of the experimental treatment effects stemming from different study participation and differential reporting of outcomes across treatment arms finally we re consider the famous rand estimate that the elasticity of medical spending with respect to its out of pocket price is 0 2 emphasizing the challenges associated with summarizing the experimental treatment effects from non linear health insurance contracts using a single price elasticity

the economics of moral hazard revisited pauly s 1968 pauly m 1968 the economics of moral hazard comment american economic review 58 531 537 analysis of the welfare loss from insurance assumes that medical care consumption is not determined by income but recent studies suggest it is this study argues that 1 pauly s analysis overstates the welfare loss because it includes the effect of income on consumption 2 the relevant income effect is derived from income transfer from the healthy to the ill that occur when the probability of illness is less than 1 and 3 the welfare loss can be considered the transaction cost of insurance

competition among trading venues information and trading on electronic communications networks this paper explores the competition between two trading venues electronic communication networks ecns and nasdaq market makers ecns oier the advantages of anonymity and speed of execution which attract informed traders thus trades are more likely to occur on ecns when information asymmetry is greater and when trading volume and stock return volatility are high ecn trades have greater permanent price impacts and more private information is revealed through ecn trades than though market maker trades however ecn trades have higher ex ante trading costs because market makers can preference or internalize the less informed trades and oier them better executions technological innovations that enable high speed low cost electronic trading systems are dramatically changing the structure of nancial markets exchanges and markets around the world are merging or forming alliances to improve liquidity and reduce costs in the face of increased competition from each other and from these computerized trading systems trading volume on electronic communications networks ecns has grown rapidly over the past several years ecns are now involved in more than a third of nasdaq trading volume and are attempting to increase their market share in nyse listed

moral hazard vs liquidity and optimal unemployment insurance this paper presents new evidence on why unemployment insurance ui benefits affect search behavior and develops a simple method of calculating the welfare gains from ui using this evidence i show that 60 percent of the increase in unemployment durations caused by ui benefits is due to a liquidity effect rather than distortions on marginal incentives to search moral hazard by combining two empirical strategies first i find that increases in benefits have much larger effects on durations for liquidity constrained households second lump sum severance payments increase durations substantially among constrained households i derive a formula for the optimal benefit level that depends only on the reduced form liquidity and moral hazard elasticities the formula implies that the optimal ui benefit level exceeds 50 percent of the wage the exact identification approach to welfare analysis proposed here yields robust optimal policy results because it does not require structural estimation of primitives

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

is non monetarist arithmetic just as unpleasant what should the central bank do if the fiscal authority persists in running a deficit if the monetarist policy prescription of bond financing deficits is adopted mccallum 8 and others have shown that the real growth rate must exceed the after tax real interest rate if macroeconomic instability is to be avoided analysts such as miller and sargent 10 and burbidge 1 doubt whether this condition is met and thus argue in favor of greater flexibility in the rate of monetary growth but will that lead to instability as well is the requirement for a unique solution and macroeconomic convergence just as stringent under the non monetarist option of money financed deficits if so monetarists can deflect criticism of their financing option from those who argue money financing is preferred on feasibility grounds this paper addresses this question and concludes that money financing involves much more pleasant arithmetic than does bond financing analysis is given for both closed and small open economies considering what is available in the existing literature the open economy extension may be the most important contribution of the paper in addition to addressing the feasibility of alternative financing options we use the model to comment on the welfare cost of inflation in an open economy environment the feasibility of money financed deficits has recently drawn renewed attention among macroeconomists erbas 2 using a model which imposes the ricardian equivalence hypothesis and assumes no growth concludes that money financing is preferred as an automatic stabilizer as it offers greater short run stability of the level of income scarth 14 comes to the same conclusion using a model which does not impose the ricardian equivalence hypothesis but which allows economic growth liviatan 6 and mitchell 11 investigate the feasibility of bond and money financing using long run models of a closed economy in which government bonds constitute a part of net wealth in this paper we consider both open and closed economy long run models and we adopt the ricardian equivalence hypothesis we emphasize ricardian equivalence since most monetarists are comfortable with this assumption thus unlike the previous long run studies we examine the feasibility of monetarist versus non monetarist financing options using a model acceptable to most monetarists this is important when the results do not support monetarism the remainder of the paper is organized as follows the closed economy analysis is given in section ii the open economy case is discussed in section iii and concluding remarks are contained in section iv

anatomy of initial public offerings of common stock initial public offerings of common stocks ipos are typically underpriced in this paper the author develops and tests the hypothesis that underpricing serves as a form of insurance against legal liability and the associated damages to the reputations of investment bankers the empirical results based on samples of ipos that were brought to the market before and after the securities act of 1933 provide considerable support for the implicit insurance hypothesis specifically gross underpricing and market segmentation between prestigious and fringe investment bankers in originating unseasoned new issues appear to be peculiar to the post 1933 era a number of studies have documented that unseasoned common stocks typically garner large positive abnormal returns during a short period following the initial offering in his recent review of the empirical evidence on the initial returns of common stock offerings smith 36 concluded that the returns from offer price to after market price have exceeded fifteen percent his calculations did not include some of the earlier results obtained by mcdonald and fisher 23 and logue 20 when their samples are combined with those in smith s review the initial returns of unseasoned equity offerings appear even larger over seventeen percent these results imply that underwriters consistently offer the securities at substantial discounts from their values that are set in the after market in other words initial public offerings ipos appear to be underpriced what is even more puzzling is the fact that in some time periods underpricing appears to be systematically larger than in other periods ibbotson and jaffe 15 and ritter 29 have documented that during the postwar era there have been a number of periods in which the initial returns of common stocks have been extremely high ritter for example reported that the average return from the offer price to the first after market price was over forty eight percent for ipos in 1980 and 1981 1 similarly the initial returns of unseasoned issues of common stock brought to the market in 1950 1951 1961 and 1968 were unusually large these periods in which ipos were grossly underpriced are referred to as the hotissue markets why do investment bankers underprice ipos why do issuers

clustering in crude oil prices and the target pricing zone hypothesis abstract this paper studies the target pricing zone tpz hypothesis for crude oil by examining price clustering in the dollar digit it is hypothesized that price clustering occurs within an established tpz if opec is able to defend the upper and lower bounds through output changes the results show that prices strongly cluster around the dollar digit value of 9 within the tpz sub periods but not outside the sub periods furthermore the degree of clustering declines when production capacity utilization is high and when production significantly exceeds quotas consistent with opec s inability to defend the zone nine centered clustering also results in lower contemporaneous and next day volatility these results support the target pricing zone hypothesis of crude oil

do investors prefer round stock prices evidence from israeli ipo auctions abstract we find round number clustering in orders submitted by investors in israeli ipo auctions explanations offered for price clustering such as dealer collusion or implicit agreement to simplify negotiations cannot explain price clustering in this market therefore this is direct evidence that investors prefer round numbers

signalling by underpricing in the ipo market abstract empirical evidence suggests the existence of hot issue markets for initial public offerings in certain periods and in certain industries new issues are underpriced and rationing occurs this paper develops a model consistent with this observation which assumes the firm itself best knows its prospects in certain circumstances firms with the most favorable prospects find it optimal to signal their type by underpricing their initial issue of shares and investors know that only the best can recoup the cost of this signal from subsequent issues

the pricing of convertible debt offerings abstract we present the first empirical evidence on the pricing of convertible debt offerings using a sample of 91 convertible debt offerings from the period 1988 1992 we show a significant mean initial excess return of 1 11 our underpricing result is invariant to zero nonzero coupons maturity issue size or bond ratings further analysis reveals that various types of risk inherent in the new convertible issues are useful in explaining the cross sectional variation in the initial excess returns we offer an explanation for our results based on the arguments of the differential information model

stealth trading which traders trades move stock prices usingaudit trail data for a sample of nyse firms we show that medium size trades are associated with a disproportionately large cumulative stock price change relative to their proportion of all trades and volume this result is consistent with the predictions of barclay and warner s 1993 stealth tradinghypothesis we find that the source of this disproportionately large cumulative price impact of medium size trades is trades initiated by institutions this result is robust to various sensitivity checks our findings appear to confirm street lore that institutions are informed traders 2001 elsevier science s a all rights reserved

the upstairs market for large block transactions analysis and measurement of price effects this article develops a model of the upstairs market where order size beliefs and prices are determined endogenously we test the model s predictions using unique data for 5 625 equity trades during the period 1985 to 1992 that are known to be upstairs transactions and are identified as either buyer or seller initiated we find that price movements prior to the trade date are significantly positively related to trade size consistent with information leakage as the block is shopped upstairs further the temporary price impact or liquidity effect is a concave function of order size which may result from upstairs intermediation

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

extreme price clustering in the london equity index futures and options markets price clustering and optimal tick sizes have recently been topics of substantial public policy interest and this paper presents evidence which is relevant to both debates around 98 of quoted and traded prices for liffe stock index derivatives are found to occur at even ticks we report that clustering increases with volatility and transaction frequency and decreases with trade size and find that the proportion of odd ticks is significantly lower near the market open and higher near the close further an inverse relationship is reported between bid ask spreads and the number of odd ticks and spreads cluster at even tick values this evidence of extreme price clustering is the first to be presented for financial derivatives the results support both the price resolution and the negotiation hypotheses of price clustering

health insurance the tradeoff between risk pooling and moral hazard choosing optimal health insurance coverage involves a trade off between the gain from risk reduction and the deadweight loss from moral hazard this paper examines this trade off empirically by estimating both the demand for health insurance and the demand for health services it relies on data from a randomized controlled trial of cost sharing s effects on the use of health services and on the health status for a general non elderly population

what makes carbon traders cluster their orders abstract the ability to trade large amounts of assets at low costs could be hindered when the size of the orders is concentrated at specific trade sizes this paper documents evidence of size clustering behavior in the european carbon futures market and analyzes the circumstances under which it happens our findings show that carbon trades are concentrated in sizes of one to five contracts and in multiples of five we have also demonstrated that more clustered prices have more clustered sizes suggesting that price and size resolution in the european carbon market are complementary and that carbon traders round both the price and the size of their orders finally the analysis of the key determinants of the size clustering reveals that traders use a reduced number of different trade sizes when uncertainty is high market liquidity is poor and the desire to open new positions and cancel old ones is very strong

a model of the demand for investment banking advising and distribution services for new issues this paper presents a theory of the demand for investment banking advising and distribution services for the case in which the investment banker is better informed about the capital market than is the issuer and the issuer cannot observe the distribution effort expended by the banker the optimal contract under which the offer price decision is delegated to the better informed banker in order to deal with the adverse selection and moral hazard problems resulting from the informational asymmetry and the observability problem is characterized the model demonstrates a positive demand for investment banking advising and distribution services and provides an explanation of the underpricing of new issues an investment banker performs three functions which may be of value to an issuer of new securities underwriting advising and distribution this paper presents a theory of the demand for investment banking advising and distribution services based on an informational asymmetry between an issuer of new securities and an investment banker ultimately a theory of the organization of the financial intermediary industry is required that would predict which firms would use which types of financial intermediaries for which purposes and which firms would raise capital without engaging the services of a financial intermediary only a limited set of such predictions are developed here in the context of a model of a fixedprice offering under a negotiated contract in which the investment banker is

sequential sales learning and cascades when ipo shares are sold sequentially later potential investors can learn from the purchasing decisions of earlier investors this can lead rapidly to cascades in which subsequent investors optimally ignore their private information and imitate earlier investors although rationing in this situation gives rise to a winner s curse it is irrelevant the model predicts that 1 offerings succeed or fail rapidly 2 demand can be so elastic that even risk neutral issuers underprice to completely avoid failure 3 issuers with good inside information can price their shares so high that they sometimes fail 4 an underwriter may want to reduce the communication among investors by spreading the selling effort over a more segmented market consider a scenario in which an issuer is selling a new security of uncertain value for example an ipo initial public offering of stock or high yield debt through an underwriter the s e c has banned variable price sales while the value of this new security is highly uncertain to individual market participants investors hold perfectly accurate information when aggregated moreover there are many potential investors and a small number of these investors can jointly determine the value of the firm or its project with high precision it would seem that in this scenario underpriced offerings would succeed and overpriced offerings would fail nevertheless this paper shows that if the distribution channels of invest ment banks are limited underpriced offerings can fail and overpriced offer ings can succeed with limited distribution channels it takes the under writer time to approach interested investors therefore later investors can observe how well an offering has sold to date or at least how successful it has sold relative to offerings previously undertaken by this underwriter

price movement and trade size on the national stock exchange of india using data for the national stock exchange of india we examine three hypotheses about which trades move prices the stealth trading hypothesis proposes that cumulative price changes cpcs are concentrated in particular trade sizes due to the strategic trading of informed traders we find that depending on market conditions from 60 to 80 of the cpc is concentrated in small trade sizes with almost all of the remaining price change concentrated in medium trade sizes these results support the stealth trading hypothesis

do workers accept lower wages in exchange for health benefits compensating wage theory predicts that workers receiving more generous fringe benefits are paid a lower wage than comparable workers who prefer fewer fringe benefits this study tests this prediction for employer provided health insurance by modeling the wages of married women employed full time in the labor market husband s union status husband s firm size and husband s health coverage through his job are used as instruments for his wife s own employer health insurance benefits the estimates suggest wives with own employer health insurance accept a wage about 20 lower than what they would have received working in a job without benefits

litigation risk intermediation and the underpricing of initial public offerings we formally examine the role of litigation risk in initial public offering ipo pricing the underwriter s pricing decision trades off current revenue against expected future litigation costs both of which are increasing in the ipo price given a time consistency constraint and rational expectations on the part of investors however the standard litigation risk argument does not lead to equilibrium underpricing we develop a richer model that provides sufficient conditions under which there is equilibrium underpricing the issuer s choice of employing an underwriter versus floating the ipo on its own is examined and various testable implications of the model are developed article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

health insurance coverage and the macroeconomy this paper investigates the relationship between the macroeconomy and health insurance coverage for non elderly americans we find that for men state unemployment rate is positively correlated with the probability of health insurance coverage in general and through an employer in particular and that these correlations are only partly explained by changes in employment status in contrast the insurance coverage of women and children appears to be insulated from fluctuations in the unemployment rate by public health insurance programs like medicaid and state children s health insurance program schip we estimate that 984 000 americans nearly all of whom were adult men lost health insurance due to macroeconomic conditions alone during the 2001 recession

what s not there odd lots and market data we investigate odd lot trades in equity markets odd lots are increasingly used in algorithmic and high frequency trading but are not reported to the consolidated tape or in databases such as taq in our sample the median number of odd lot trades is 24 but in some stocks odd lots are 60 or more of trading odd lot trades contribute 35 of price discovery consistent with informed traders using odd lots to avoid detection omitting odd lot trades leads to inaccuracies in order imbalance measures and makes sentiment measures unreliable excluding odd lots from the consolidated tape raises important regulatory issues

the pricing of initial public offerings a dynamic model with information production this paper presents an information theoretic model of ipo pricing in which insiders sell stock in both the ipo and the secondary market have private information about their firm s prospects and outsiders may engage in costly information production about the firm high value firms knowing they are going to pool with low value firms induce outsiders to engage in information production by underpricing which compensates outsiders for the cost of producing information the information is reflected in the secondary market price of equity giving a higher expected stock price for high value firms

an analysis of trade size clustering and its relation to stealth trading abstract nyse and nasdaq trades increasingly cluster on multiples of 500 1 000 and 5 000 shares such clustering varies over time and across stocks and tends to increase with the level of trading activity furthermore rounded trades tend to have more persistence both in occurrence and in trade initiation finally medium sized rounded trades tend to have greater relative price impact than large rounded trades from these observations we surmise that trade size clustering is consistent at least in part with the actions of stealth traders who tend to use medium sized rounded transactions in an attempt to disguise their trades

bank deposit rate clustering theory and empirical evidence the market prices of stocks and other assets tend to cluster on round fractions a similar clustering is found in the interest rates paid on retail bank deposits however the theoretical rationales given for asset price clustering are incompatible with the clustering of retail deposit rates this paper proposes a theory based on depositors limited recall it shows that when banks exploit this phenomenon deposit rates will tend to be set at round fractions and will be relatively sticky at these levels the implications of this theoretical model are tested using money market deposit account and retail certificate of deposit interest rate data from a sample of more than 500 banks