follower payoffs in symmetric duopoly games this paper compares the leader and follower payoff in a duopoly game as they arise in sequential play with the nash payoff in simultaneous play if the game is symmetric has a unique symmetric nash equilibrium and players payoffs are monotonic in the opponent s choice along their own best reply function then the follower payoff is either higher than the leader payoff or even lower than in the simultaneous game this gap for the possible follower payoff had not been observed in earlier duopoly models of endogenous timing

combining the endogenous choice of price quantity and timing abstract this paper builds a theory of endogenous role distribution leader follower and nash player and of endogenous choice for the type of competition strategy price and quantity in a product differentiated duopoly model we examine an extended game by adding a pre play stage in which duopoly firms simultaneously decide whether to select a price contract or a quantity contract and also whether to move in the first period or in the second period before market competition we demonstrate that the unique equilibrium outcome is simultaneous quantity competition if the goods are substitutes and simultaneous price competition if the goods are complements

on forchheimer s model of dominant firm price leadership abstract we show that in a simple price setting game with one large firm and many small firms the large firm does not accept the role of the price leader

cournot duopoly with two production periods and cost differentials abstract saloner 1987 analyzes a cournot model with two production periods before the market clears if costs do not vary across periods any point on the outer envelope of the reaction functions between the firms stackelberg outputs is attainable with a subgame perfect nash equilibrium spne saloner s analysis is generalized by allowing for cost differences across periods the continuum of equilibria vanishes for any cost differential if costs fall slightly over time there are multiple leader follower equilibria otherwise the model generates a unique spne where both firms produce their single period cournot outputs in the period when production is cheaper

endogenous timing with incomplete information and with observable delay abstract this paper analyzes endogenous timing in a duopoly model with incomplete information firms announce the period in which they will move before choosing an action and are then committed to their choices endogenous stackelberg equilibria with either the informed or the uninformed firm as the stackelberg leader may emerge for most parameters the cournot equilibrium in the first production period results endogenously journal of economic literature classification numbers c72 c73 d82 l10

out of sample comparison of copula specifications in multivariate density forecasts we introduce a statistical test for comparing the predictive accuracy of competing copula specifications in multivariate density forecasts based on the kullback leibler information criterion klic the test is valid under general conditions in particular it allows for parameter estimation uncertainty and for the copulas to be nested or non nested monte carlo simulations demonstrate that the proposed test has satisfactory size and power properties in finite samples applying the test to daily exchange rate returns of several major currencies against the us dollar we find that the student s t copula is favored over gaussian gumbel and clayton copulas this suggests that these exchange rate returns are characterized by symmetric tail dependence

on the endogeneity of cournot nash and stackelberg equilibria games of accumulation abstract we characterize equilibria of games with two properties i agents have the opportunity to adjust their strategic variable after their initial choices and before payoffs occur but ii they can only add to their initial amounts the equilibrium set consists of just the cournot nash outcome one or both stackelberg outcomes or a continuum of points including the cournot nash outcome and one or both stackelberg outcomes a simple theorem that uses agents standard one period reaction functions and the one period cournot nash and stackelberg equilibria delineates the equilibrium set applications include contribution oligopoly and rent seeking games

endogenous r d symmetry in linear duopoly with one way spillovers a duopoly model of cost reducing r d cournot competition is extended to study the endogenous timing of r d strategic investment under the assumption that r d spillovers only flow from the r d leader to the follower sequential and simultaneous play at the r d stage are compared in order to assess the role of technological externalities in stimulating or attenuating endogenous firm asymmetry the only timing structure of the r d stage sustainable as subgame perfect nash equilibrium involves simultaneous play and zero spillovers

optimal emission tax with endogenous location choice of duopolistic firms this study explores an optimal pre committed or ex ante environmental tax policy in a three stage game in which polluting firms strategically choose the location of their plants after the government has chosen the optimal emission tax rate we show not only that the optimal emission tax is non decreasing with the declining cost of relocation e g setup or fixed costs or else the progress of globalization but also that the firms may move back their relocated plants to the home country causing the resulting welfare to decline as a consequence the domestic welfare varies in a non monotonic way we also show that such a counterintuitive non monotonic relationship does not arise under time consistent ex post emission taxes

endogenous timing in duopoly games stackelberg or cournot equilibria abstract simultaneous versus sequential play is studied in an extended game in a preplay stage players decide whether to select actions in the basic game at the first opportunity or to wait until observing their rivals first period actions in one extended game players first decide when to select actions without committing to actions in the basic game the equilibrium has a simultaneous play subgame unless payoffs in a sequential play subgame pareto dominate those payoffs in another extended game deciding to select at the first turn requires committing to an action both sequential play outcomes are the equilibria only in undominated strategies

being a leader or a follower this paper deals with the analysis of conflicts in duopoly situations in particular with the distribution of roles in the von stackelberg framework which firm will be the leader which firm the follower under what circumstances will firms find a mutually advantageous distribution of roles will they fight for leadership or followship in von stackelberg s analysis of duopoly either firms do not choose their respective roles or they fight for leadership this situation is due to the particular strategy space namely the quantity to produce of an homogeneous good we extend here the strategy space to price quantity pairs we show that if costs are identical or similar then both firms will prefer the role of follower if there is a significant cost differential between the firms then the non cooperative equilibrium can only be of two types either the less efficient firm will act as the leader selling a limited quantity at a low price and the more efficient firm as the follower selling to the residual demand at a higher price or the more efficient firm acting as leader will drive the less efficient firm out of the market by adopting a limit pricing strategy but in so doing that firm makes less profits than if it acts as follower we suggest that it is not unreasonable to expect that firms in a duopoly framework will tend to coordinate on their mutually advantageous role distribution even if they compete in a non cooperative strategic way in terms of both prices and quantities

joint price and volumetric risk in wind power trading a copula approach abstract this paper examines the dependence between wind power production and electricity prices and discusses its implications for the pricing and the risk distributions associated with contracts that are exposed to joint price and volumetric risk we propose a copula model for the joint behavior of prices and wind power production which is estimated to data from the danish power market we find that the marginal behavior of the individual variables is best described by arma garch models with non gaussian error distributions and the preferred copula model is a time varying gaussian copula as an application of our joint model we consider the case of an energy trading company entering into longer term agreements with wind power producers where the fluctuating future wind power production is bought at a predetermined fixed price we find that assuming independence between prices and wind power production leads to an underestimation of risk as the profit distribution becomes left skewed when the negative dependence that we find in the data is accounted for by performing a simple static hedge in the forward market we show that the risk can be significantly reduced furthermore an out of sample study shows that the choice of copula influences the price of correlation risk and that time varying copulas are superior to the constant ones when comparing actual profits generated with different models

endogenous price leadership and the strategic acquisition of information we model a differentiated bertrand duopoly in which a firm s earlier knowledge of market demand than its competitor results in endogenous price leadership with the information advantaged firm leading in such a setting with second mover advantage we then study the firms incentives to acquire information and analyze an information acquisition game both i neither firm acquiring information and ii one firm acquiring information can arise as subgame perfect equilibrium but both firms acquiring information is never an equilibrium outcome even if information is free information may have a negative value if it causes a change in the timing of price competition

endogenous stackelberg leadership abstract we consider a linear quantity setting duopoly game and analyze which of the players will commit when both players have the possibility to do so to that end we study a two stage game in which each player can either commit to a quantity in stage 1 or wait till stage 2 we show that committing is more risky for the high cost firm and that consequently risk dominance considerations as in harsanyi and selten 1988 allow the conclusion that only the low cost firm will choose to commit hence the low cost firm will emerge as the endogenous stackelberg leader journal of economic literature classification numbers c72 d43

a two stage model of research and development with endogenous second mover advantages this paper describes a simple two stage model of research and development in which the winner of the research stage has the option of moving first in the development stage some unexpected results emerge in equilibrium the leader in the development stage invests less than each follower and is consequently least likely to collect the patent moreover the leader receives a lower expected payoff than each of the followers thus there are endogenous second mover advantages using a game of timing in which the identity of the stackelberg leader is determined to link the two stages i find that firms face quite different incentives in the research stage although the leader invests less than each follower in the research stage as well the leader enjoys higher expected revenue from the complete two stage game than does each follower the equilibrium is inefficient because there is a lag between the time at which research is completed and the time at which development is begun and because aggregate investment is inefficiently asymmetrically distributed across firms

endogenous price leadership with an essential input abstract the hamilton slutsky endogenous timing methodology is applied to differentiated duopolies where motivated by access pricing literature one firm owns an essential input sold wholesale to the rival both firms then set retail prices for their differentiated goods the scenario and results are different from standard endogenous timing duopolies encompassing three prices one wholesale two retail rather than two with unique timing game equilibrium which always entails retail price leadership by the input owner thus providing a new and powerful rationalisation for stackelberg the results call into question the generic access pricing assumption that simultaneous moves determine retail downstream prices

endogenous timing in strategic environmental policymaking in this paper we endogenize the timing of policymaking in a simple two country model of strategic environmental policy we consider a timing game in which two policymakers non cooperatively decide their preferred sequence of moves before setting emission tax rates we show that whether the policymakers implement emission tax policies simultaneously or sequentially crucially depends on the magnitude of environmental damages when the damages are insignificant the tax rates are strategic substitutes and the simultaneous move policymaking emerges in equilibrium in contrast when the damages are significant the tax rates are strategic complements and sequential move policymaking emerges we also extend the model by allowing for differences in the vulnerability to environmental damages between countries when the differences are large the unique equilibrium of the game is the situation where the less vulnerable country acts as a leader in the case where multiple equilibrium emerges the risk dominant equilibrium is also that where the less vulnerable country leads

mixed duopoly privatization and subsidization with excess burden of taxation we investigate optimal tax subsidy policies in mixed and private oligopolies with excess burden of taxation we compare the optimal subsidies and the resulting welfare levels among four regimes mixed and private cournot duopolies and stackelberg competition with public and private leaderships we show that in contrast to the existing works on the privatization neutrality theorem privatization affects resulting welfare duopole mixte privatisation et subsidisation en presence de fardeau fiscal excedentaire on examine les politiques optimales de taxes et de subventions dans le cas d oligopoles mixtes et prives en presence de fardeau fiscal excedentaire on compare les subsides optimaux et les effets sur le niveau de bien etre dans quatre regimes les duopoles de cournot mixte et prive et la concurrence a la stackelberg avec leadership public et prive on montre que contrairement a ce que suggeraient les travaux anterieurs sur le theoreme de la neutralite de la privatisation la privatisation affecte les niveaux de bien etre

second mover advantage and price leadership in bertrand duopoly we consider the issue of first versus second mover advantage in differentiated product bertrand duopoly with general demand and asymmetric linear costs we generalize existing results for all possible combinations where prices are either strategic substitutes and or complements dispensing with common extraneous and restrictive assumptions we show that a firm with a sufficiently large cost lead over its rival has a first mover advantage for the linear version of the model we invoke a natural endogenous timing scheme coupled with equilibrium selection according to risk dominance the analysis yields as the unique equilibrium outcome sequential play with the low cost firm as leader

the copula garch model of conditional dependencies an international stock market application abstract modeling the dependency between stock market returns is a difficult task when returns follow a complicated dynamics when returns are non normal it is often simply impossible to specify the multivariate distribution relating two or more return series in this context we propose a new methodology based on copula functions which consists in estimating first the univariate distributions and then the joining distribution in such a context the dependency parameter can easily be rendered conditional and time varying we apply this methodology to the daily returns of four major stock markets our results suggest that conditional dependency depends on past realizations for european market pairs only for these markets dependency is found to be more widely affected when returns move in the same direction than when they move in opposite directions modeling the dynamics of the dependency parameter also suggests that dependency is higher and more persistent between european stock markets

endogenizing leadership in tax competition abstract in this paper we extend the standard approach of horizontal tax competition by endogenizing the timing of decisions made by the competing jurisdictions following the literature on the endogenous timing in duopoly games we consider a pre play stage where jurisdictions commit themselves to move early or late i e to fix their tax rate at a first or second stage we highlight that at least one jurisdiction experiments a second mover advantage we show that the subgame perfect equilibria spes correspond to the two stackelberg situations yielding to a coordination problem in order to solve this issue we consider a quadratic specification of the production function and we use two criteria of selection pareto dominance and risk dominance we emphasize that at the risk dominant equilibrium the less productive or smaller jurisdiction leads and hence loses the second mover advantage if asymmetry among jurisdictions is sufficient pareto dominance reinforces risk dominance in selecting the same spe three results may be deduced from our analysis i the downward pressure on tax rates is less severe than predicted ii the smaller jurisdiction leads iii the big country higher tax rate rule does not always hold

endogenous preemption on both sides of a market abstract we study a market in which both buyers and sellers can decide to preempt and set their quantities before market clearing will this lead to preemption on both sides of the market only one side of the market or to no preemption at all we find that preemption tends to be asymmetric in the sense that it is restricted to only one side of the market buyers or sellers

von stackelberg and cournot duopoly choosing roles under what circumstances will firms agree on the choice of roles of leader and follower in the von stackelberg duopoly model a key determinant is the slope of the firms reaction function in either price or quantity space the duopolists will disagree over the choice of roles if they have downward sloping reaction functions each will prefer to be the leader they will also disagree if they have upward sloping reaction functions and similar profit functions each will prefer that the other be the leader preferences between von stackelberg and cournot outcomes are also considered

information value under demand uncertainty and endogenous market leadership in an oligopoly model with firms choosing to produce in one of two periods we identify the circumstance under which a firm s having early information regarding stochastic demand results in market leadership high demand volatility leads to stackelberg competition with the information advantaged firm leading in the n firm case an equilibrium with multiple leaders and multiple followers emerges endogenously in a duopoly information acquisition game we identify conditions that determine whether neither one or both firms will pay to acquire early information and note that one firm s obtaining early information may generate a positive externality benefitting its competitor both symmetric and asymmetric outcomes are possible and stackelberg market leadership may occur in equilibrium but only when firms have different costs of information our finding that an information advantage may convey leadership which then affects the value of information to the players applies to other settings exhibiting first mover advantage such as certain public good provision games jel c72 d82 l13

environmental taxes and first mover advantages this paper studies whether governments prefer to be leaders or followers in environmental policies to analyze this question i assume transboundary pollution and two countries that have to decide whether to set environmental taxes sequentially or simultaneously when taxes are set sequentially an effect denoted as the sequential setting effect arises that raises the equilibrium taxes i show that whether governments prefer to be leaders or followers in taxes depends on the degree to which environmental pollution spills over to trading partners when this overspill is low enough taxes are strategic complements and both the leader and the follower obtain greater welfare than under a simultaneous tax setting however the leader country obtains greater welfare than the follower in this case governments set taxes sequentially when the degree to which environmental pollution spills over to trading partners is high enough taxes are strategic substitutes and governments set taxes simultaneously in this case each government wants to avoid becoming the follower in taxes

leadership games with convex strategy sets a basic model of commitment is to convert a two player game in strategic form to a leadership game with the same payoffs where one player the leader commits to a strategy to which the second player always chooses a best reply this paper studies such leadership games for games with convex strategy sets we apply them to mixed extensions of finite games which we analyze completely including nongeneric games the main result is that leadership is advantageous in the sense that as a set the leader s payoffs in equilibrium are at least as high as his nash and correlated equilibrium payoffs in the simultaneous game we also consider leadership games with three or more players where most conclusions no longer hold

endogenous role in mixed markets a two production period model in this paper i investigate endogenous roles in a mixed duopoly where private and state owned public firms compete by allowing two production periods i find that many equilibria exist including the cournot type equilibrium and one stackelberg type equilibrium where the public firm becomes the follower however another stackelberg type equilibrium where the public firm becomes the leader does not exist if small inventory costs are introduced the unique equilibrium outcome becomes the stackelberg type where the public firm is the follower

on the status of the nash type of noncooperative equilibrium in economic theory in economic theory the nash type of noncooperative equilibrium is a widely used equilibrium concept nevertheless the concept is frequently misunderstood and misleading explanations and interpretations are often given this paper presents a sample of such frequently appearing misleading explanations and goes on to explain why they are misleading the case for using the nash noncooperative equilibrium concept is stronger than what is implied by the many misleading statements found in the literature a basic issue is whether it can be argued that decisions in accordance with the noncooperative equilibrium theory are individually rational decisions this issue is not covered by the classical rationality postulate in economic theory this problem is tackled by stating certain postulates which may be taken as defining individual rationality in situations of noncooperative interaction it is shown that nash behavior satisfies these postulates

when should a manufacturer set its direct price and wholesale price in dual channel supply chains abstract applying an observable delay game framework developed in noncooperative game theory we investigate the timing problem concerning when a manufacturer managing dual channel supply chains consisting of a retail channel and a direct channel should post its wholesale price and direct price conventionally operational research models describing dual channel supply chains examine price competition where the retailer and the manufacturer simultaneously determine the retail and direct prices respectively in contrast to this conventional setting our model demonstrates that such simultaneous price competition never arises if the manufacturer and retailer can choose not only the level of the price but also the timing of pricing if the manufacturer sets the direct price after setting the wholesale price to the retailer the retailer accelerates the timing of retail pricing prior to the direct price setting by the manufacturer our findings suggest that the manufacturer should post the direct price before or upon but not after setting the wholesale price for the retailer this upfront posting of the direct price not only constitutes the subgame perfect nash equilibrium of the noncooperative game between channel members but also maximizes the profits for a manufacturer employing multichannel sales strategies

endogenous price leadership we consider a linear price setting duopoly game with differentiated products and determine endogenously which of the players will lead and which one will follow while the follower role is most attractive for each firm we show that waiting is more risky for the low cost firm so that consequently risk dominance considerations as in harsanyi and selten a general theory of equilibrium selection in games mit press cambridge ma 1988 allow the conclusion that only the high cost firm will choose to wait hence the low cost firm will emerge as the endogenous price leader

welfare consequence of an asymmetric regulation in a mixed bertrand duopoly abstract i investigate an asymmetric duopoly where a public enterprise must supply the demand it faces while a private enterprise has no such obligation i show that such an asymmetric regulation yields the first best outcome walrasian equilibrium

the strategic perils of delayed differentiation the value of delayed differentiation also known as postponement for a monopolist has been extensively studied in the operations literature we analyze the case of imperfectly competitive markets with demand uncertainty wherein the choice of supply chain configuration i e early or delayed differentiation is endogenous to the competing firms we characterize firms choices in equilibrium and analyze the effects of these choices on quantities sold profits consumer surplus and welfare we demonstrate that purely strategic considerations not previously identified in the literature play a pivotal role in determining the value of delayed differentiation in the face of either entry threats or competition these strategic effects can significantly diminish the value of delayed differentiation in fact under plausible conditions these effects dominate the traditional risk pooling benefits associated with delayed differentiation in which case early differentiation is the dominant strategy for firms even under cost parity with delayed differentiation we extend the main model to study the effects of alternate market structures asymmetric markets and inventory holdback our results in particular that for a broad range of parameter values early differentiation is a dominant strategy even under cost parity with delayed differentiation are robust to these relaxations

a comparison of international income inequality an ordered probit model analysis in this study the ordered probit model with marginal effect was applied to examine the key elements that influence changes in the gini levels the empirical results indicated that export incentives and poverty have a positive impact on the gini levels moreover the marginal effect revealed that export incentives increase income inequality for countries with higher inequality and reduce inequality for those countries with a relatively even income distribution likewise the study found that the asian pacific economic cooperation apec and the eu countries move from inequality to equality more efficiently than countries in the latin american integration association laia

endogenous timing with infinitely many firms abstract a model with constant marginal costs is considered where firms choose first a period for production and then the amount to produce when competing in the market according to the resulting timing decisions multiple equilibria arise allowing for infinitely many industry output configurations encompassing one limit output dominant firm and the cournot equilibrium with free entry as extreme cases at each of these equilibria a firm produces a positive amount only if this firm commits to produce at period one both stackelberg and cournot like outcomes are sustainable as equilibria however when the number of leaders is given production at subsequent periods is always prevented and industry output is sometimes larger than the entry preventing level

asynchronized multiperiod commitments and cycles abstract we consider a game where agents can synchronize or stagger their decisions we compare the outcomes of both timing patterns and show that spillovers and strategic interactions are crucial for such a comparison a typology used in industrial organization distinguishing four cases fat cat top dog lean and hungry puppy dog allows us to compare the actions taken in the staggered variant and in the synchronized one the staggered variant exhibits cycles and players are both better off when there are strategic complementarities between them a timing game is then set up so as to endogenize the choice between the two variants we study two examples are developed i bertrand competition and ii a wage setting game when there are two monopoly unions in two interrelated firms we show that the staggering of price decisions generates counter cyclical mark ups in the first example and the staggering of wage decisions generates cycling output in the industry in the second example

managing volumetric risk of long term power purchase agreements abstract a negative dependence between wind power production and electricity spot price exists this is an important fact to consider for risk management of long term power purchase agreements ppas in this study we investigate this dependence by constructing a joint model using constant as well as time varying copulas we propose to use score driven models as marginal model for the spot price of electricity as these are more robust to extreme events compared to arma garch models we apply the new model to pricing and risk management of ppas and benchmark it against the arma garch specification our comparison shows that the score driven model results in a statistically significant improvement of predicting the value at risk var which is of high importance for risk management of long term ppas further comparing constant and time varying copulas we find that all time varying copulas are significantly better than their constant counterparts at predicting the var hence time varying copulas should be used in risk management of ppas

low quality leadership in a vertically differentiated duopoly with cournot competition abstract we model a vertically differentiated duopoly with quantity setting firms as an extended game in which firms noncooperatively choose the timing of moves at the quality stage to show that at the subgame perfect equilibrium sequential play obtains with the low quality firm taking the leader s role

collusive price leadership with capacity constraints abstract in this paper collusive price leadership in homogeneous good capacity constrained repeated price competition is examined in the stage game firms choose their timing of price setting although setting a price early is disadvantageous per se a large firm has an incentive to move early in order to demonstrate its commitment not to deviate if the discount factor is not too large this behavior raises the collusive price compared to that arising in collusion with simultaneous moves as a result all firms obtain strictly higher profits

delay in contests abstract why is there delay in contests in this paper we follow and extend the line of reasoning of carl von clausewitz to explain delay for a given contest technology delay may occur if there is an asymmetry between defense and attack if the expected change in relative strengths is moderate and if the additional cost of investment in future strength is low

prisoners dilemma in duopoly super games abstract the choice between quantity and price in order to stabilize collusion is modeled here it is shown that this relocates the prisoners dilemma backward from the market stage to the stage where the market variable is chosen in order to sustain collusion and where discount rates appear as the payoffs likewise a prisoners dilemma arises also when both the market variable and the type of behavior cooperative or non cooperative are simultaneously chosen journal of economic literature classification numbers c72 d43 l13

corporate social responsibility or payoff asymmetry a study of an endogenous timing game we revisit an endogenous timing game by introducing corporate social responsibility into firms payoffs previous research investigates an endogenous timing game in a mixed oligopoly wherein one welfare maximizing public firm competes against profit maximizing private firms it shows that the outcome is completely different from that of private oligopoly in contrast to its result we find that this change in payoff does not matter as long as the payoffs are symmetric our result indicates that asymmetry and not welfare concerning objectives yields specific results in the literature on mixed oligopoly

endogenous timing in the presence of non monotonicities the aim of this paper is to generalize the endogenous timing game proposed by hamilton and slutsky games and economic behavior 1990 2 pp 29 46 by allowing the payoff or the marginal payoff of a player to become non monotonic with respect to the strategy of the opponent we propose a taxonomy of the subgame perfect nash equilibria based on the characteristics of the payoff functions proposed by eaton canadian journal of economics 2004 37 pp 805 29 we determine under which conditions of the initial payoff functions commitment has a social value and when the simultaneous move nash equilibrium is commitment robust and discuss its pareto efficiency

supermodularity and complementarity in economics an elementary survey the literature on supermodular optimization and games is surveyed from the perspective of potential users in economics this methodology provides a new approach for comparative statics based only on critical assumptions and allows a general analysis of games with strategic complementarities the results are presented in a simplified yet rigourous manner without reference to lattice theory for the special case of one dimensional parameter and actions sets with the emphasis being on wide accessibility detailed applications are presented for well known models of consumer behavior monopoly pass through bertrand and cournot competition strategic r d search and matching wherever appropriate useful tricks for applications and comparative comments are inserted

capacity investment timing by start ups and established firms in new markets we analyze the competitive capacity investment timing decisions of both established firms and start ups entering new markets which have a high degree of demand uncertainty firms may invest in capacity early when uncertainty is high or late when uncertainty has been resolved possibly at different costs established firms choose an investment timing and capacity level to maximize expected profits whereas start ups make those choices to maximize the probability of survival when a start up competes against an established firm we find that when demand uncertainty is high and costs do not decline too severely over time the start up takes a leadership role and invests first in capacity whereas the established firm follows by contrast when two established firms compete in an otherwise identical game both firms invest late we conclude that the threat of firm failure significantly impacts the dynamics of competition involving start ups this paper was accepted by yossi aviv operations management

alternative time patterns of decisions and dynamic strategic interactions this paper offers a simple approach to study steady state markov perfect equilibria arising in dynamic games when players are obliged to commit their actions for several periods it highlights the importance of spillovers and dynamic strategic interactions when assessing the various time patterns conceivable in such games the obtained results are then applied to various either micro or macroeconomic issues where time patterns of decisions matter

are benefits from oil stocks diversification gone new evidence from a dynamic copula and high frequency data abstract oil is perceived as a good diversification tool for stock markets to fully understand this potential we propose a new empirical methodology that combines generalized autoregressive score copula functions with high frequency data and allows us to capture and forecast the conditional time varying joint distribution of the oil stocks pair accurately our realized garch with time varying copula yields statistically better forecasts of the dependence and quantiles of the distribution relative to competing models employing a recently proposed conditional diversification benefits measure that considers higher order moments and nonlinear dependence from tail events we document decreasing benefits from diversification over the past ten years the diversification benefits implied by our empirical model are moreover strongly varied over time these findings have important implications for asset allocation as the benefits of including oil in stock portfolios may not be as large as perceived

firm scale and the endogenous timing of entry a choice between commitment and flexibility abstract this paper presents a model of stochastic oligopoly with demand uncertainty where firms endogenously choose entry timing we examine two extreme types of market structure and show that the equilibrium correspondence that connects them is continous with two identically sized firms there are symmetric cournot type equilibria where the probability of early entry declines with greater uncertainty and for low uncertainty two asymmetric equilibria with one large firm with a continuum of nonatomic firms there is a unique stackelberg equilibrium we conclude that the behavior of a dominant firm with a finite fringe can be approximated by stackelberg equilibrium journal of economic literatureclassification numbers d21 l11

endogenous timing in a mixed oligopoly abstract endogenous order of moves is analyzed in a mixed oligopoly where the firms first choose the timing for choosing their quantities the results are strikingly different from those obtained in a corresponding oligopoly with all profit maximizing firms

leadership and the provision of safe food modern food production typically involves many interacting stages and two or more decision makers there is reason to believe that inputs in determining quality likely complement and it is not possible to regulate many of these inputs in a food production system possessing these characteristics we show that leadership by one or more firms through communicating actions may be used as a mechanism to increase overall food quality as there may be no private incentive to lead there may be strategic merit in assigning liability through legislation we also suggest the possibility that genetics are leadership instruments in hog production systems copyright 2001 oxford university press

a note on equilibrium leadership in tax competition models this paper reexamines the work of kempf and rota graziosi j pub econ 94 768 776 2010 which shows that leadership by the small region is the risk dominant equilibrium under the endogenous timing game they obtained this result in a model where the asymmetry among regions translates into different gradients of the demand for capital but identical vertical intercepts in this paper we simply reverse the form of asymmetry by considering different vertical intercepts but identical gradients the reason is that market power is typically related to the intercept and not to the slope of the demand function we then show that leadership by the large region becomes the risk dominant equilibrium and can even become pareto superior

on the nash bargaining solution with noise abstract suppose two parties have to share a surplus of random size each of the two can either commit to a demand prior to the realization of the surplus as in the nash demand game or remain silent and wait until the surplus was observed adding the strategy to wait results in two strict equilibria in each of which one player takes almost the whole surplus provided uncertainty is small if commitments concern only who makes the first offer the more balanced nash bargaining solution is approximately restored in all cases commitment occurs in equilibrium despite the risk of breakdown of negotiations

endogenous timing in general rent seeking and conflict models we examine simultaneous versus sequential choice of effort in a two player contest the timing of moves determined in a preplay stage prior to the contest subgame as well as the value of the prize is allowed to be endogenous contrary to endogenous timing models with an exogenously fixed prize the present paper finds the following 1 players may decide to choose their effort simultaneously in the subgame perfect equilibrium spe of the extended game 2 the spe does not need to be unique in particular there is no unique spe with sequential moves if the direct costs of effort are zero 3 symmetry among players does not rule out incentives for precommitment to effort locally away from the cournot nash level 4 finally there may be no correlation between win probability and strategic incentives in our framework a finding most central in the analysis of fixed prize contests

list pricing and discounting in a bertrand edgeworth duopoly list or retail pricing is a widely used trading institution where firms announce a price that may be discounted at a later stage competition authorities view list pricing and discounting as a procompetitive practice we modify the standard bertrand edgeworth duopoly model to include list pricing and a subsequent discounting stage both firms first simultaneously choose a maximum list price and then decide whether to discount or not in a subsequent stage we show that list pricing works as a credible commitment device that induces a pure strategy outcome this is true for a general class of rationing rules further unlike the dominant firm interpretation of a price leader the low capacity firm may have incentives to commit to a low price and in this sense assume the role of a leader