structural instability and the production smoothing model of inventories the production smoothing model of inventories implies that inventories labor inputs sales and factor input prices are cointegrated if sales and factor prices are i 1 with one cointegrating vector for each state variable held these propositions are tested in six nondurable goods industries all industries provide evidence of cointegration fewer quasi fixed factors are found than previous research often assumed estimates of cointegrating vectors provide implausible parameter estimates rank stability tests with fixed or seqentially chosen breakpoints indicate that the cointegrating matrix has unstable rank parameter estimates of cointegrating vectors do not provide much support for the production smoothing model of inventories

trading patterns and prices in the interbank foreign exchange market the behavior of quote arrivals and bid ask spreads is examined for continuously recorded deutsche mark dollar exchange rate data over time across locations and by market participants a pattern in the intraday spread and intensity of market activity over time is uncovered and related to theories of trading patterns models for the conditional mean and variance of returns and bid ask spreads indicate volatility clustering at high frequencies the proposition that trading intensity has an independent effect on returns volatility is rejected but holds for spread volatility conditional returns volatility is increasing in the size of the spread there is a growing body of theoretical studies on the pattern of trading activity in financial markets with implications for the time series behavior of transactions prices and intensity of trading the empirical literature addressing similar concerns using intraday market data appropriate for such tasks is sparse particularly in the area of the trading of currencies the purpose of this paper is to examine both international patterns of intraday trading activity and the time series properties of returns and bid ask spreads for the deutsche mark dollar exchange rate in the interbank foreign exchange market the goal is to provide information useful in the further development of market microstructure models of trading and to compare empirical findings against theoretical results already in existence the foreign exchange market is in operation twenty four hours a day seven

trader see trader do how do small fx traders react to large counterparties trades abstract we show that information about the counterparty of a trade affects the future trading decisions of individual traders the effect is such that traders tend to reverse their order flow in line with the better informed counterparties informed traders primarily incorporate their own private as well as publicly available information into prices whereas uninformed traders mainly magnify the effect of the informed this pattern of interaction among traders extends to different order types traders treat their own and others market orders as more informative than limit orders

inventory and price behaviour the point of this paper is that inventory adjustment attenuates downward pressure on price when realized demand is low because firms accumulate inventory hold overs speculating that demand will be stronger in the succeeding period when realized demand is high the firm draws down its inventories until a stock out occurs and price rises to clear the market

input and output inventories in the uk what is the role of inventories in uk manufacturing we present and estimate a model of inventories that considers separately finished goods and input i e the sum of raw materials and work in process inventories our results suggest that both types of inventories are used for production level and production cost smoothing we identify a small but significant negative relationship between inventories and the real interest rate thus providing support for one of the textbook channels of the monetary policy transmission mechanism variance decompositions indicate that technology shocks are the dominant driving factor behind cyclical changes in inventories

a model of inventory and layoff behaviour under uncertainty this paper develops a model of firm behavior under uncertainty designed to study the interac tion of inventories and layoffs the model is a blend of a buffer sto ck model of inventory behavior and an implicit contract model of layo ffs the model creates a distinction between inventory biased and lay off biased firms each of which exhibits inherently different pattern s of response of inventories and temporary layoffs to demand shocks in addition the model implies that the inventory layoff interaction tends to strengthen weaken the response of price and the work force to changes in anticipated demand real interest rates copyright 1988 by royal economic society

technology shocks and cointegration in quadratic models of the firm in two quadratic models of a firm it is shown that if the firm s production function is not separable in its arguments then the presence of any unit root technology shock will prevent factor inputs from being cointegrated with input prices absent integrated technology shocks there will be one cointegrating vector for every quasi fixed factor held by the firm thereby providing one possible rationale for multiple cointegrating vectors in multivariate time series systems the parameters of these cointegrating vectors may be used to recover the parameters of the static factor demand functions obeyed by the firm copyright 1995 by economics department of the university of pennsylvania and the osaka university institute of social and economic research association

taking stock a critical assessment of recent research on inventories empirical and theoretical aspects of inventory behavior became hot topics in the 1950s and early 1960s no one seemed to notice the tension that was developing between the emerging macroeconomic and microeconomic views of inventories macroeconomists routinely thought of inventories as a destabilizing factor yet the prevailing micro theory viewed inventories as a stabilizing factor it was a fascinating question that was barely explored instead somewhat inexplicably interest in inventories dried up as if inventories were of minor economic significance and little intrinsic interest by the early 1980s then economists once again knew something they had known in the 1950s that inventory investment is of first order importance in business cycles but they were also beginning to realize that the standard production smoothing buffer stock model of inventories was in deep trouble this paper focuses on developments since that realization

a note on the econometric use of constant dollar inventory series abstract one dollar of finished goods inventories does not represent the same amount of physical goods as one dollar of sales when department of commerce constant dollar series are used this can cause seriously biased regression estimates

the determinants of manufacturing inventories in the uk the authors examine the determinants of inventory holding by the u k manufacturing sector over the period 1968 89 they find that inventory levels respond positively to output and its conditional variance and negatively to the level of gearing tehnological innovation in the form of computerized inventory control leads to a fall in the stock output ratio epirical results for inventories are examined in a cointegration and a general to specific error correction model with conditional variances estimated using an arch framework a backward looking error correction model is found to outperform a forward looking model although the latter also provides a reasonable fit to the data copyright 1993 by royal economic society

the predictive power of implied volatility evidence from 35 futures markets abstract using data from 35 futures options markets from eight separate exchanges we test how well the implied volatilities ivs embedded in option prices predict subsequently realized volatility rv in the underlying futures we find that for this broad array of futures options iv performs well in a relative sense for a large majority of the commodities studied the implieds outperform historical volatility hv as a predictor of the subsequently rv in the underlying futures prices over the remaining life of the option indeed in most markets examined regardless of whether it is modeled as a simple moving average or in a garch framework hv contains no economically significant predictive information beyond what is already incorporated in iv these findings add to previous research that has focused on currency and crude oil futures by extending the analysis into a very broad array of contracts and exchanges our results are consistent with the hypothesis that futures options markets in general with their minimal trading frictions are efficient

the interrelationship between price and output decisions and investment decisions microfoundations and aggregate implications abstract this paper develops a model of firm behavior in which both price and output decisions and investment decisions are made the model permits an analysis of the dynamics of inventory and capital accumulation on price and output behavior there are two main results 1 short run price and output levels will differ from long run levels as desired stocks of inventory and capital diverge from actual levels 2 the size of the elasticities of price and output to changes in demand and cost variables depends on the speed with which gaps between desired and actual stocks are closed through investment

market making with costly monitoring an analysis of the soes controversy we develop a model of price formation in a dealership market where monitoring of the information flow requires costly effort the result is imperfect monitoring which creates profit opportunities for speculators who pick off stale quotes externalities associated with monitoring give rise to multiple equilibria in which dealers earn strictly positive expected profits we obtain various policy implications a switch to automatic execution can improve or worsen spreads and price discovery depending on the specific equilibrium a reduction in the minimum quoted depth tightens the spread but it reduces price efficiency our analysis is relevant for the soes controversy given that speculators in our model behave as the real world soes bandits our model predicts that soes bandits should trade in stocks with small spreads and that soes bandit activity should widen the spread we provide empirical evidence consistent with these predictions

investigation of production sales and inventory relationships using multicointegration and non symmetric error correction models the accumulated sum of a stationary series is called integrated if a linear combination of some of the integrated series is stationary it is said to be cointegrated this paper presents empirical results on inventories to consider the possibility of a deeper form of cointegration called multicointegration which is introduced in granger and lee 1989 a vector integrated series is multicointegrated if the accumulated sum of its stationary cointegrated linear combination is again cointegrated with itself inventory which is the accumulated sum of production minus sales is probably cointegrated with production and sales the empirical results generally support the presence of multicointegration of production and sales in many u s industries and industrial aggregates the results also favour the non symmetric error correction model providing evidence that the strength of attraction is different on both sides of the attractor a modified s s rule for inventory control is investigated in the context of a non symmetric error correction model and the results generally do not support the s s rule sufficient evidence is found to conclude that multicointegration is a useful concept in the area of inventory determination

joint production quasi fixed factors of production and investment in finished goods inventories inventory investment has long been an important area of inquiry for empirical work in macroeconomics this is due in large measure to the fact that inventory investment is a major source of fluctuations in aggregate output empirical work on inventories however has been dominated by the use of simple univariate flexible accelerators 1 the major objective of this paper is to propose and test a multivariate flexible accelerator model for inventory investment the model is tested with data on finished goods inventories from the manufacturing sector of the u s economy there are two reasons for undertaking such a task first at a theoretical level a univariate flexible accelerator model asserts that investment in say finished goods inventories is proportional to the gap between the desired and actual stocks of finished goods such a model presumes that decisions by firms on finished goods inventories are made independently of decisions on other stocks but theory suggests that when firms make simultaneous decisions on a variety of stocks which includes not only finished goods but also goods in process inventories the size of the work force etc decisions on finished goods will interact with decisions on

forecasting stock return variance toward an understanding of stochastic implied volatilities we examine the behavior of measured variances from the options market and the underlying stock market under the joint hypotheses that markets are informationally efficient and that option prices are explained by a particular asset pricing model forecasts from time series models of the stockreturn process should not have predictive content given the market forecast as embodied in option prices both in sample and out of sample tests suggest that this hypothesis can be rejected using simulations we show that biases inherent in the procedure we use to imply variances cannot explain this result thus we provide evidence inconsistent with the orthogonality restrictions of option pricing models that assume that variance risk is unpriced these results also have implicationsfor optimal variance forecast rules

trade inventories and s s the paper presents empirical tests of the s s model of inventory behavior using aggregate retail trade data estimation and testing are based on the probability distributions of inventories derived by caplin 1985 the excess volatility of retailers demand over their consumers demand and the forgetfulness of inventories under s s are emphasized test results indicate that the time series properties of deliveries and sales are consistent with s s and not a quadratic cost model finally when autoregressions of inventories are given an s s rather than a stock adjustment interpretation traditional empirical problems such as low speeds of adjustment are explained

quotes order flow and price discovery the goal of this article is to examine the impact of 1975 congressional mandate to integrate the trading of nyse listed stocks the conclusions are most of the time the new york stock exchange nyse quote matches or determines the best displayed quote and the nyse is the most frequent initiator of quote changes non nyse markets attract a significant portion of their volume when they are posting inferior bids or offers indicating they obtain order flow for other reasons such as payment for order flow yet when a non nyse market does post a better bid or offer it does attract additional order flow

functional form sample selection and housing demand abstract this paper addresses issues of functional form and sample selection in estimating housing demand urban economic theory suggests that income and price elasticities be allowed to vary with reference incomes and housing prices a generalized box cox estimator rejects linear and log log forms semi log forms are accepted in some cases sample truncation leads to downward biases in permanent income regressions but to slightly upward biased income elasticities price elasticities are generally unchanged

limit orders depth and volatility evidence from the stock exchange of hong kong we investigate the role of limit orders in the liquidity provision in a pure orderdriven market results show that market depth rises subsequent to an increase in transitory volatility and transitory volatility declines subsequent to an increase in market depth we also examine how transitory volatility affects the mix between limit orders and market orders when transitory volatility arises from the ask bid side investors will submit more limit sell buy orders than market sell buy orders this result is consistent with the existence of limit order traders who enter the market and place orders when liquidity is needed

an econometric model of housing price permanent income tenure choice and housing demand abstract this paper addresses the determination of housing price permanent income tenure choice and housing demand full housing demand elasticities incorporate the interactive effects among the four stages of the model price and income have major effects in the tenure choice equation sociodemographic variables such as age have complex effects that may be lost in simpler forms of estimation

oligopolistic entry deterrence under incomplete information recent work has investigated the effects of asymmetric information between an incumbent firm and a potential entrant this study extends the analysis to allow the initial market structure to be a noncooperative oligopoly we show that there is a bayesian nash equilibrium in which the incumbent firms although unable to collude strategically deter entry that would have occurred under complete information in contrast to the past limit pricing literature it is a high price that deters entry as it signals to the potential entrant that this is a high cost industry extending the model to allow for multiple potential entrants we find that increasing the degree of potential competition raises the preentry price and reduces the likelihood of entry

nonconvex costs and the behavior of inventories this paper explores one possible explanation for the apparent excess volatility of production relative to sales nonconvexities in the technology facing firms it is shown that if firms operate in a region of declining marginal costs then small shifts in demand can cause production to jump substantially estimates for six production to stock industries as well as the automobile industry suggest that all these industries behave as if they were operating in the region of nonconvex costs the results have important implications not only for inventory investment but also for the cyclical behavior of productivity and prices

demographic variables in demand analysis in this paper the authors discuss five procedures for incorporating demographic variables into theoretically plausible demand systems translating scaling and the gorman reverse gorman and implicit prais houthakker procedures these five procedures are used to incorporate a single demographic variable the number of children in a household into the generalized ces demand system using household budget data for the united kingdom for the period 1966 1972 excerpt

does anonymity matter in electronic limit order markets we develop a model in which limit order traders possess volatility information we show that in this case the size of the bid ask spread is informative about future volatility moreover if volatility information is in part private we establish that i the size of the bid ask spread and ii its informativeness about future volatility should change in the same direction when limit order traders identifiers stop being disclosed we test these predictions using data from the paris bourse as expected we find that the average quoted spread and its informativeness are significantly smaller when limit order traders identifiers are concealed these findings suggest that the limit order book is a channel for volatility information

the variability of aggregate demand with s s inventory policies this paper develops a general theory of the aggregate implications of s s inventory policies it is shown that s s policies add to the variability of demand with the variance of orders exceeding the variance of sales overall the s s theory contradicts the widely held notion that retail inventories act as a buffer protecting manufacturers from fluctuating sales in 1951 arrow harris and marschak 3 introduced the s s form of inventory policy the policies are designed for retailers of finished goods who face economies of scale when placing orders with their suppliers to pursue an s s inventory policy the retailer establishes a lower stock point s and an upper stock point s no order is placed until inventories fall to s or below whereupon they are restored to the maximum of s a general proof of the optimality of these s s inventory policies was provided by scarf 13 at the microeconomic level the model has been extensively investigated formulae are available to compute optimal policies e g ehrhardt 6 and these policies are xidely used in industry e g schwartz ed 14 in addition the model has been extended to increasingly complex demand environments e g karlin and fabens 11 in contrast little is known about the macroeconomic implications of s s policies several recent papers have begun to correct this deficiency akerlof has suggested that pursuit of constant threshold money holding policies of the s s variety might be responsible for the observed low short run income elasticity of the demand for money akerlof 1 and akerlof and milbourne 2 in the operations research literature ehrhardt schultz and wagner 7 analyzed the demand environment of a wholesaler supplying several retailers they required that the distinct retailers have independent sales ruling out the analysis of common factors in sales finally simulation results of blinder 4 suggested a role for the s s model in understanding retail sector inventories however the theoretical difficulties with the model remained unresolved blinder commented if firms have a technology that makes the s s rule optimal aggregation across firms is inherently difficult indeed it is precisely this difficulty which has prevented the s s model from being used in empirical work to date blinder 4 p 459 in this paper we present a general theory of the aggregate implications of s s policies our central finding is that s s policies add to the variability of demand with the variance of orders exceeding the variance of sales this result holds even in the presence of common factors in retail sales in addition a close connection

sewers diffusion and the decline of mortality the case of paris 1880 1914 it is common to argue that water infrastructure innovations improve life expectancy yet the benefits of clean water depend on a mechanism to dispose of waste water we draw on the historical experience of a large industrial city to estimate the impact of the spread of the sewer system using a longitudinal data set on mortality and rents for each of paris 80 neighborhoods we show that sanitation contributed several years to life expectancy these results point out the multiplicity of infrastructure needed to help decrease mortality

rational expectations and the smoothing properties of inventories of finished goods abstract this paper formulates and estimates a dynamic rational expectations equilibrium model of inventories of finished goods and employment of labor the view that the primary role of inventories of finished goods is to act as a buffer stock in the face of fluctuating demand is examined both the model and estimation results indicate that this is the case because of differences in the costs involved for firms in changing their inventory stocks and labor force in addition to providing some new evidence on the behavior of inventories of finished goods and employment the paper illustrates a technology for maximum likelihood estimation of structural parameters under the hypothesis of rational expectations

the linear quadratic adjustment cost model and the demand for labour in this paper we demonstrate a new way of testing the linear quadratic adjustment cost lqac model under rational expectations we illustrate how the parameter restrictions arising from this model can be formally specified and we use these restrictions to extent the technique of campbell and shiller 1987 to a wider class of models based on present value relations potentially the demand for labour is an area in which the lqac model can find applicability in practice and subsequently we analyse sectoral labour demand in danish manufacturing we find however that for our data set the quadratic adjustment cost model under rational expectations can be rejected

price discovery in auction markets a look inside the black box opening mechanisms play a crucial role in information aggregation following the overnight nontrading period this article examines the process of price discovery at the new yorkstockexchange single price opening auction we develop a theoretical model to explain the determinants of the opening price and test the model using order level data we show that the presence of designated dealers facilitates price discovery relative to a fully automated call auction market this is consistent with specialists extracting information from observing the evolution of the limit order book in addition the specialist s opening trade reflects noninformational factors such as price stabilization requirements

in search of liquidity block trades in the upstairs and downstairs markets we analyze the ability of various market mechanisms to provide liquidity for large equity trades using data on 21 077 block transactions in dow jones stocks we find that the down stairs nyse floor market is a significant source of liquidity although negotiation in the informal upstairs market provides better execution than the downstairs market for large trades these differences are economically small we find however that upstairs markets are used by traders who can credibly signal that their trades are liquidity motivated thus upstairs markets allow trades that may not otherwise occur article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

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

pre announcement and event period private information abstract pre announcement information is private information gathered in anticipation of a public disclosure event period information is private information useful in conjunction with the announcement itself typically rational models of trade are based exclusively on one type of information such models are less descriptive of real market settings and misspecified empirically therefore we introduce a model of rational trade with both features and discuss its implications

inventories and the volatility of production a stylized fact associated with inventory behavior is that the variance of production exceeds the variance of sales this paper presents a model of production decisions with demand uncertainty that incorporates no nnegativity constraints on inventories even with no productivity shocks optimal behavior by the firm is consistent with this stylized fact either if demand exhibits positive serial correlation or if the firm can backlog excess demand the reason is that a demand shock affects both the actual inventory level given unchanged production and the desired level production must replenish the stock and adjust to the new desired level copyright 1987 by american economic association

island goes dark transparency fragmentation and regulation responding to a september 2002 regulatory enforcement the island electronic communications network stopped displaying its limit order book in the three most active exchange traded funds etfs where it was the dominant venue island s share of trading activity and price discovery fell fragmenting the market etf prices adjust more slowly when island goes dark and there is substantial price discovery movement from etfs to the futures market trading costs increase on island and decrease off island with higher trading costs overall when island later redisplays its orders market quality improves with transparency and the reduction in fragmentation both playing important roles copyright 2005 oxford university press

subscribing to transparency abstract the paper empirically explores how more trade transparency affects market liquidity the analysis takes advantage of a unique setting in which the shanghai stock exchange offered more trade transparency to market participants subscribing to a new software package first the results show that the additional data disclosure increased trading activity but also increased transactions costs through wider bid ask spreads thus in contrast to popular policy belief the paper finds that more transparency need not improve market liquidity second the paper finds a particularly strong immediate liquidity impact accompanied by altered trading behavior which suggests a significant impact on institutional traders subscribing relatively early lastly since the effective level of market transparency is bound to depend on how many traders are subscribing to the data the study can empirically establish the functional form between market wide transparency and liquidity the relationship is non monotonic which can explain the lack of consensus in the existing literature where each empirical study is naturally confined to specific parts of the transparency domain

block trading and information revelation around quarterly earnings announcements the author investigate the empirical importance of information revelation in the pricing of block trades in particular he examine whether block prices are correlated with the unexpected part of firms quarterly earnings for his sample of block trades information revelation does indeed appear to be a significant factor shortly before earnings announcements article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

market maker quotation behavior and pretrade transparency we examine the impact of differing levels of pretrade transparency on the quotation behavior of nasdaq market makers we find that market makers are more likely to quote on odd ticks and to actively narrow the spread when they can do so anonymously by posting limit orders on electronic communication networks ecns from a public policy perspective our findings suggest that making the level of pretrade transparency on nasdaq more opaque by allowing anonymous quotes could improve price competition and narrow spreads further

credit ratings and stock liquidity we analyze contemporaneous and predictive relations between credit ratings and measures of equity market liquidity and find that common measures of adverse selection which reflect a portion of the uncertainty about future firm value are larger when credit ratings are poorer we also show that future rating changes can be predicted using current levels of adverse selection collectively our results validate widely used microstructure measures of adverse selection and offer new insights into the value of credit ratings and the specific nature of the information they contain copyright 2006 oxford university press

the demand for housing in developing countries empirical estimates from household data cities in developing countries are growing at extraordinary rates often compressing into decades the urbanization process that has taken centuries in developed countries in coping with this growth public authorities have devised a wide range of policy instruments to influence the rate and character of city expansion to meet the needs of people for shelter and urban services and to allocate resources in ways that redistribute both the costs and benefits of urban growth ideally such policy formulation should be informed by a careful understanding of the behavior of urban markets in fact little information on market behavior is available to the policymakers of developing countries such basic information is needed for improved project design and even more important for improved sector wide policies this paper reports on research conducted at the world bank to increase understanding of developing country housing markets in particular of housing demand behavior while the overall project examines both the demand for housing characteristics and the demand for housing as a composite good this paper addresses only the latter the objectives of this paper are 1 to review briefly previous evidence on housing demand parameters in developing countries 2 to present new evidence on housing demand parameters based on application of standardized models and comparable variable definitions in 16 cities in eight developing countries colombia egypt el salvador ghana india jamaica korea and the philippines and 3 to examine similarities and differences among cities in housing demand and in a preliminary way offer explanations for place to place differences limited comparisons are also made to two u s cities in order to begin comparison of developing and developed country market behavior

housing demand in the united states in the late nineteenth century evidence from the commissioner of labor survey 1889 1890 abstract this paper examines homeownership and housing demand for a sample of approximately 6800 urban industrial workers in the united states for the period 1889 1890 using data from the sixth and seventh annual reports of the u s commissioner of labor tenure choice and renter demand equations are estimated using both permanent and current income data limitations did not permit estimation of owner demand the results indicate lower homeownership rates among american workers circa 1890 than later and significant effects on ownership of income age of household head region industry occupation ethnicity and family size and composition rental prices and value rent ratios had effects in the expected directions partial and full elasticities calculated for renter demand reveal downward biases if only current income is used to estimate housing demand comparisons of these historical data to contemporary housing information reveal greater similarities to present day developing nations than to recent u s data the results indicate that modern housing demand theory performs well with historical data

a structured var for denmark under changing monetary regimes using recently developed statistical tools for analyzing cointegrated 1 2 data this article models money income prices and interest rates in denmark the final model describes the dynamic adjustment to short run changes of the process to deviations from long run steady states and to several political interventions it provides new insights about the effects of the liberalization of trade and capital in a small open european economy

on the interpretation of cointegration in the linear quadratic inventory model abstract the traditional formulation of the linear quadratic inventory model with unit roots predicts cointegration between inventories and sales that formulation implies that marginal production costs and the marginal benefits of inventories are both tending to and the cointegrating coefficient reflects the optimal trade off between these competing factors this paper suggests a reformulation of the problem in which marginal production costs and marginal inventory benefits are both stationary and in which the cointegrating coefficient is the same as the value that characterizes the target inventory level in the cost function

pensions and retirement evidence from union army veterans i investigate the factors that fostered rising retirement rates prior to social security and most private sector pensions by estimating the income effect of the first major pension program in the united sates that covering union army veterans the elasticity of nonparticipation with respect to union army pension income was 0 73 the findings suggest that secularly rising income explains a substantial part of increased retirement rates comparisons with elasticities of nonparticipation with respect to social security income suggest that the elasticity of labor force nonparticipation may have decreased with time perhaps because of the increasing attractiveness of leisure

anonymity adverse selection and the sorting of interdealer trades this article asks why london security dealers use more than one trading venue to trade with one another we argue that differences in the exclusivity liquidity anonymity and post trade transparency of each system permit a more efficient sorting of interdealer trades than if there were just one system our evidence comes from detailed data on where london dealers chose to place interdealer trades contrary to intuition we show that uninformed interdealer trades as measured by subsequent price impact tend to migrate to third party brokered systems where trade is anonymous by contrast informed interdealer trades tend to migrate to the direct nonanonymous public market additionally we show that this distribution of trades is supported by differences in the price improvement dealers receive in the direct and brokered markets our findings have implications for three strands of the market microstructure literature first they contribute to our understanding of the importance of anonymity and transparency in securities trading most theoretical models of the effects of anonymity and transparency predict that anonymous trading systems will attract more informed trades

the submission of limit orders or market orders the role of timing and information in the reuters d2000 2 system abstract recent work in the market microstructure literature suggests that the speed with which orders arrive in the market impacts traders order submission decisions in this study we use an asymmetric autoregressive conditional duration acd model to empirically investigate the influence on the submission of limit and market orders of changes in the time between the past submissions of different types of orders changes in the slope of the limit order book and changes in price uncertainty we find that the expected time between the arrivals of successive orders in the foreign exchange market depends on the previous type of order submitted and the slope on both sides of the order book price uncertainty volatility plays a secondary role after accounting for the impact of changes in the slope of the order book lastly we find that there are fundamental changes in the level of information contained in the submission of orders at the opening and closing of markets

a re interpretation of the linear quadratic model when inventories and sales are polynomially cointegrated summary estimation of the linear quadratic model the workhorse of the inventory literature traditionally takes inventories and sales to be first difference stationary series and the ratio of the two variables to be stationary however these assumptions do not always match the properties of the data for the last two decades in the united states we propose a model that allows for the non stationary characteristics of the data using polynomial cointegration we show that the closed form solution has other recent models as special cases the resulting model performs well on aggregate and disaggregated data copyright 2006 john wiley sons ltd

the price variability volume relationship on speculative markets this paper concerns the relationship between the variability of the daily price change and the daily volume of trading on the speculative markets our work extends the theory of speculative markets in two ways first we derive from economic theory the joint probability distribution of the price change and the trading volume over any interval of time within the trading day and second we determine how this joint distribution changes as more traders enter or exit from the market the model s parameters are estimated by fiml using daily data from the 90 day t bills futures market the results of the estimation can reconcile a conflict between the price variability volume relationship for this market and the relationship obtained by previous investigators for other speculative markets this paper concerns the relationship between the variability of the daily price change and the volume of trading on speculative markets previous empirical studies 2 3 6 12 14 16 of both futures and equity markets always find a positive association between price variability as measured by the squared price change ap2 and the trading volume 2 there are two explanations for the relationship clark s 2 explanation which is secondary to his effort to explain why the probability distribution of the daily price change is leptokurtic emphasizes randomness in the number of within day transactions in clark s model the daily price change is the sum of a random number of within day price changes the variance of the daily price change is thus a random variable with a mean proportional to the mean number of daily transactions clark argues that the trading volume is related positively to the number of within day transactions and so the trading volume is related positively to the variability of the price change the second explanation is due to epps and epps 6 their model examines the mechanics of within day trading the change in the market price on each within day transaction or market clearing is the average of the changes in all of the traders reservation prices epps and epps assume there is a positive relationship between the extent to which traders disagree when they revise their reservation prices and the absolute value of the change in the market price that is an increase in the extent to which traders disagree is associated with a larger absolute price change the price variability volume relationship arises then because the volume of trading is positively related to the extent to which traders disagree when they revise their reservation prices

informed speculation with imperfect competition competitive rational expectations models have the unsatisfactory property dubbed the schizophrenia problem by hellwig that each trader takes the equilibrium price as given despite the fact that he influences that price an examination of information aggregation in a non competitive rational expectations model using a nash equilibrium in demand functions shows that the schizophrenia problem is avoided by having each trader take into account the effect his demand has on the equilibrium price given a distribution of private information across traders prices reveal less information than in the competition equilibrium and prices no longer become fully informative in the limit as noise trading vanishes or as traders become risk neutral with small traders the model may become one of monopolistic competition not perfect competition in contrast to the competitive model a reasonable model of endogenous acquisition of costly private information is obtained even when traders are risk neutral

production and inventory control at the general motors corporation during the 1920 s and 1930 s this paper analyzes dynamics of production and inventories at the general motors corporation during the 1920s and 1930s the authors begin by examining anecdotal evidence on the nature of the production control system in force during that period motivated by that evidence they then extend the conventional linear quadratic model of production behavior to take account of annual shutdown finally the authors apply the modified model to newly available data on monthly unit production sales and inventories during 1924 40 general motors appears to have been aiming to maintain a targeted level of inventory relative to expected sales and secondarily to smooth production copyright 1993 by american economic association