bank runs liquidity costs and investment distortions abstract in this paper we extend the diamond and dybvig 1983 model of intermediation to study further the conditions under which bank runs can occur and to consider how private parties might adjust to the existence of bank run equilibria we provide weaker necessary conditions for runs we then characterize how banks respond to the possibility of runs in their design of deposit contracts and investment decisions banks might choose to offer contracts that prevent runs but under some conditions the second best contracts will involve accepting some risk of runs in order to achieve higher expected returns from their investments

efficient mechanisms for bilateral trading we consider bargaining problems between one buyer and one seller for a single object the seller s valuation and the buyer s valuation for the object are assumed to be independent random variables and each individual s valuation is unknown to the other we characterize the set of allocation mechanisms that are bayesian incentive compatible and individually rational and show the general impossibility of ex post efficient mechanisms without outside subsidies for a wide class of problems we show how to compute mechanisms that maximize expected total gains from trade and mechanisms that can maximize a broker s expected profit journal of economic literature classification number 026

a theory of corporate financial decisions with liquidity and solvency concerns this paper studies the impact of both liquidity and solvency concerns on corporate finance i present a tractable model of a firm that optimally chooses capital structure cash holdings dividends and default while facing cash flows with long term uncertainty and short term liquidity shocks the model explains how changes in solvency affect liquidity and also how liquidity concerns affect solvency via capital structure choice these interactions result in a dynamic cash policy in which cash reserves increase in profitability and are positively correlated with cash flows the optimal dividend distributions implied by the model are smoothed relative to cash flows i also find that liquidity concerns lead to a decrease of dispersion of credit spreads

investment under uncertainty with strategic debt service the presence of a well designed bankruptcy code is an important part of the nancialarchitecture in developed economies by allowing the creditors to seize the assets of theborrowers who fail to make contractual payments the code generates bene cial ex ante e ectson debt capacity and rm value by giving the borrowers options to renegotiate their debtobligations and seek bankruptcy protection the code increases the likelihood that borrowersmay avoid ine cient ex post liquidation as hart 1999 notes the code should balanceex ante rm value maximization with ex post e ciency the bankruptcy codes in di erentcountries weight this tradeo di erently and hence vary in terms of the distribution of rightsand powers between borrowers and lenders in this paper we provide an inter temporal framework to examine how the creditors liquidation rights and the distribution of ex post bargaining powers in uence the rm s in vestment and nancing decisions and a ect ex ante rm value we show that strongerequityholders bargaining power lowers debt capacity reduces rm value and discouragesgrowth option exercising our calibration suggests that the quantitative e ects of ex poststrategic renegotiation on ex ante rm value may be large our paper provides an attempt to integrate nancial architecture into the theory of in vestment growth option exercising by building on two strands of literature investment anddebt pricing we extend the real options approach to investment pioneered by mcdonaldand siegel 1986 and brennan and schwartz 1985 to allow for capital structure decisionsunder strategic debt service we also draw insights from corporate debt pricing capital struc ture literature which focuses on leverage and security pricing after investment has alreadybeen made merton 1974 black and cox 1976 and leland 1994 our paper bridgesthe gap between these two strands of literature by characterizing the optimal investment and nancing decisions and the option value of waiting in closed form we show that the inter action between nancing and investment decisions in the presence of strategic debt servicegenerates new insights and also quantitatively important e ects on ex ante rm value

can the trade off theory explain debt structure we examine the optimal mixture and priority structure of bank and market debt using a tradeoff model where banks have the unique ability to renegotiate outside formal bankruptcy flexible bank debt offers a superior tradeoff between tax shields and bankruptcy costs ease of renegotiation limits bank debt capacity however optimal debt structure hinges upon which party has bargaining power in private workouts weak firms have high bank debt capacity and utilize bank debt exclusively strong firms lever up to their lower bank debt capacity augment with market debt and place the bank senior therefore the tradeoff theory offers an explanation for i why young small firms use bank debt exclusively ii why large mature firms employ mixed debt financing and iii why bank debt is senior the tradeoff theory also generates predictions consistent with international evidence in countries where the bankruptcy regime entails soft tough enforcement of contractual priority bank debt capacity is low high implying greater less reliance on market debt

implementation in differential information economies abstract we consider the problem of implementation of social choice correspondences in differential information economies we provide necessary conditions for implementation and slightly stronger conditions which are sufficient to guarantee implementation

financial fragility and over the counter markets abstract this paper studies the interaction between financial fragility and over the counter otc markets i model the financial sector as a large number of investors divided into different groups which i interpret as financial institutions and a large number of dealers financial institutions and dealers trade assets in an otc market a la duffie et al 2005 and lagos and rocheteau 2009 investors receive privately observed preference shocks and financial institutions use the balanced team mechanism proposed by athey and segal 2013 to implement an efficient risk sharing arrangement among their investors when the market is liquid in the sense that search and bargaining are small frictions i show that the economy is likely to have a unique equilibrium and therefore is not fragile when these frictions are severe a run equilibrium exists investors announce low valuation of assets because they believe everyone else in their financial institution is doing the same conditional on bank runs existing the welfare impact of the search friction is ambiguous during runs trade is inefficient and as a result a friction that reduces trade during runs has the potential to improve welfare this result is in sharp contrast with the existing literature which suggests that search friction has a negative impact on welfare

state capitalism and performance persistence of business group affiliated firms a comparative study of china and india business groups emerged in developing economies through direct or indirect support from the state in order to overcome a variety of institutional voids and or to further state objectives of economic growth however the efficacy of this organizational form and its associated governance structures have been debated given the dual possibility of business groups to allocate resources among its affiliates for cross subsidization or winner picking we argue that elements of the institutional environment comprising of the state s approach to organizations and the political context of these interactions vary across countries thereby influencing business groups resource allocation strategies and affecting the persistence of affiliated firms superior performance contrasting the types of state capitalism in china and india we develop and test our hypotheses we find that the effect of business group affiliation on firms superior performance persistence is stronger in a state led system of state capitalism e g china than in a co governed system e g india and that this divergence of the business group effect is weakened as affiliated firms internationalize our findings have implications for understanding business groups across institutional contexts and the influence of diversity in the types of state capitalism on organizational strategies

asset redeployability liquidation value and endogenous capital structure heterogeneity firms with lower leverage are not only less likely to experience financial distress but are also better positioned to acquire assets from other distressed firms with endogenous asset sales and values each firm s debt choice then depends on the choices of its industry peers with indivisible assets otherwise identical firms may adopt different debt policies with some choosing highly levered operations to take advantage of ongoing debt benefits and others choosing more conservative policies to wait for acquisition opportunities our key empirical implication is that the acquisition channel can induce firms to reduce debt when assets become more redeployable

optimal secession rules abstract should the constitution of a federation allow for peaceful secession constitutionally defined secession rules are optimal ex post if the federation breaks down however they may be suboptimal ex ante if the member countries receive a benefit from the perceived long term stability of the federation and constitutionally defined secession rules increase the probability of a break up the optimal social contract trades off ex ante benefits and ex post losses and it may avoid explicit secession rules if transfers are costly the trade off is present even if ex post renegotiation is allowed finally we show that under asymmetric information it is more difficult to keep the federation together and that a secession war may occur

economic theories of the break up and integration of nations abstract this paper surveys the recent political economy literature on the size distribution of nations the main themes of this literature are 1 a the spread of democracy leads to the creation of too many sovereign states 2 b the extent of factor mobility plays a key role in determining the incentives towards separation or integration 3 c economic integration through the development of international trade may require greater political integration to create and effectively maintain a level playing field in international trade at the same time economic integration by reducing the economic costs of separation increases the incentives towards political separation

dynamic security design convergence to continuous time and asset pricing implications an entrepreneur with limited liability needs to finance an infinite horizon investment project an agency problem arises because she can divert operating cash flows before reporting them to the financiers we first study the optimal contract in discrete time this contract can be implemented by cash reserves debt and equity the latter is split between the financiers and the entrepreneur and pays dividends when retained earnings reach a threshold to provide appropriate incentives to the entrepreneur the firm is downsized when it runs short of cash we then study the continuous time limit of the model we prove the convergence of the discrete time value functions and optimal contracts our analysis yields rich implications for the dynamics of security prices stock prices follow a diusion reflected at the dividend barrier and absorbed at zero their volatility as well as the leverage ratio of the firm increase after bad performance stock prices and book tomarket ratios are in a non monotonic relationship a more severe agency problem entails lower price earning ratios and firm liquidity and higher default risk

job matching and the wage distribution this paper brings together the microeconomic labor and the macroeconomic equilibrium views of matching in labor markets we nest a job matching model a la jovanovic 1984 into a mortensen and pissarides 1994 type equilibrium search environment the resulting framework preserves the implications of job matching theory for worker turnover and wage dynamics and it also allows for aggregation and general equilibrium analysis we obtain two new equilibrium implications of job matching and search frictions for wage inequality first learning about match quality and worker turnover map gaussian output noise into an ergodic wage distribution of empirically accurate shape unimodal skewed with a paretian right tail second high idiosyncratic productivity risk hinders learning and sorting and reduces wage inequality the equilibrium solutions for the wage distribution and for the aggregate worker flows quits to unemployment and to other jobs displacements hires provide the likelihood function of the model in closed form

optimal security design and dynamic capital structure in a continuous time agency model we derive the optimal dynamic contract in a continuous time principal agent setting and implement it with a capital structure credit line long term debt and equity over which the agent controls the payout policy while the project s volatility and liquidation cost have little impact on the firm s total debt capacity they increase the use of credit versus debt leverage is nonstationary and declines with past profitability the firm may hold a compensating cash balance while borrowing at a higher rate through the credit line surprisingly the usual conflicts between debt and equity asset substitution strategic default need not arise in this paper we consider a dynamic contracting environment in which a riskneutral agent or entrepreneur with limited resources manages an investment activity while the investment is profitable it is also risky and in the short run it can generate arbitrarily large operating losses the agent will need outside financial support to cover such losses and continue the project the difficulty is that while the probability distribution of the cash flows is publicly known the agent may distort these cash flows by taking a hidden action that leads to a private benefit specifically the agent may i conceal and divert cash flows for his own consumption and or ii stop providing costly effort which would reduce the mean of the cash flows therefore from the perspective of the principal or investors that fund the project there is the concern that a low cash flow realization may be a result of the agent s actions rather than the project s fundamentals to provide the agent with appropriate incentives investors control the agent s wage and may also withdraw their financial support for the project and force its early termination we seek to characterize an optimal contract in this framework and relate it to the firm s choice of capital structure we develop a method to solve for the optimal contract given the incentive constraints in a continuous time setting and study the properties of the credit line debt and equity that implement the contract as in the discrete time model of demarzo and fishman 2003 the continuous time setting offers several peter m demarzo is from stanford university and yuliy sannikov is from u c berkeley we

the breakup of nations a political economy analysis this paper develops a model of the breakup or unification of nations in each nation the decision to separate is taken by majority voting a basic trade off between the efficiency gains of unification and the costs in terms of loss of control on political decisions is highlighted the model emphasizes political conflicts over redistribution policies the main results of the paper are i when income distributions vary across regions and the efficiency gains from unification are small separation occurs in equilibrium and ii when all factors of production are perfectly mobile all incentives for separation disappear i introduction following the demise of communism the entire map of europe from the atlantic coast to the urals is being redrawn and issues of separation unification and the redrawing of borders are yet again at the forefront of european concerns many of the issues raised by this process are primarily of a political cultural or linguistic nature however there are also economic considerations that bear on this problem the objective of this paper is to analyze some important economic and political determinants of the process of unification and separation of democratic nations the starting point of our analysis is to suppose that from an economic efficiency point of view separation of nations is never desirable a unified nation is always more efficient since free trade among regions is guaranteed duplication costs in defense and law enforcement are avoided and local public goods provision such as transportation and communication networks or common standards can be coordinated furthermore any benefits of decentralization that might be obtained in a world with several nations may also be achieved within a unified nation by replicating the administrative structure of the world with several

an efficient dynamic mechanism this paper constructs an efficient budget balanced bayesian incentive compatible mechanism for a general dynamic environment with quasilinear payoffs in which agents observe private information and decisions are made over countably many periods first under the assumption of private values other agents private information does not directly affect an agent s payoffs we construct an efficient ex post incentive compatible mechanism which is not budget balanced second under the assumption of independent types the distribution of each agent s private information is not directly affected by other agents private information we show how the budget can be balanced without compromising agents incentives finally we show that the mechanism can be made self enforcing when agents are sufficiently patient and the induced stochastic process over types is an ergodic finite markov chain publication abstract

economic integration and political disintegration in a world of trade restrictions large countries enjoy economic benefits because political boundaries determine the size of the market under free trade and global markets even relatively small cultural linguistic or ethnic groups can benefit from forming small homogeneous political jurisdictions this paper provides a formal model of the relationship between openness and the equilibrium number and size of countries and successfully tests two implications of the model firstly the economic benefits of country size are mediated by the degree of openness to trade secondly the history of nation state creations and secessions is influenced by the trade regime

the impact of debt financing on entry and exit in a duopoly this article investigates the interaction between market entry company foreclosure and capital structure in a duopoly we find that the order in which firms foreclose is determined not only by differences in firm specific factors but also by common economic factors such as the interest rate and the market profit volatility we extend the exit model by allowing financially distressed firms to renegotiate their debt contracts through a one off debt exchange offer we find that firms with high bankruptcy costs or with prospects of profit improvement can get bigger reductions on their debt repayments investigating market entry we find that financial vulnerability of the incumbent induces earlier entry article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

liquidity default liquidity management and smooth dividends policy abstractour article models liquidity financing constraints with the real options framework by conducting a comprehensive investigation of the effects of shocks to liquidity constraints on the firm s optimal investment financing and dividend policies our model highlights the importance of liquidity management and extends the liquidity management approach to hedge liquidity default risk we find that being concerned about liquidity default risk will significantly change a firm s behaviours including those related to investment and the optimal capital structure a firm that is concerned about its liquidity default risk will become more cautious it will choose to delay investment and have higher leverage when internal liquidity is very low but choose earlier investment and lower leverage when liquidity is high enough the dividends policy can alleviate risks from both the external market and internal project volatility and provides an alternative explanation for the smooth dividends policy puzzle comm

run equilibria in the green lin model of financial intermediation abstract we study the green lin model of financial intermediation e j green p lin implementing efficient allocations in a model of financial intermediation j econ theory 109 2003 1 23 under a more general specification of the distribution of types across agents we derive the efficient allocation in closed form we show that in some cases the intermediary cannot uniquely implement the efficient allocation using a direct revelation mechanism in these cases the mechanism also admits an equilibrium in which some but not all agents run on the intermediary and withdraw their funds regardless of their true liquidity needs in other words self fulfilling runs can arise in a generalized green lin model and these runs are necessarily partial with only some agents participating

idiosyncratic return volatility cash flows and product market competition over the past 40 years the volatility of the average stock return has drastically outpaced total market volatility thus idiosyncratic return volatility has dramatically increased we estimate this increase to be 6 per year consistent with an efficient market this result is mirrored by an increase in the idiosyncratic volatility of fundamental cash flows we argue that these findings are attributable to the more intense economy wide competition various cross sectional and time series tests support this idea economic competitiveness facilitates reinterpretation of the results from the cross country r2 literature as well as the us idiosyncratic risk literature jel g12 g14

short term debt and incentives for risk taking abstract we challenge the view that short term debt curbs moral hazard and demonstrate that in a world with financing frictions and fair debt pricing short term debt generates incentives for risk taking to do so we develop a model in which firms are financed with equity and short term debt and cannot freely optimize their default decision because of financing frictions we show that when firms are close to distress the dynamic interaction of operating and rollover losses fuels default risk in such instances shareholders find it optimal to increase asset risk to improve interim debt repricing and prevent inefficient liquidation these risk taking incentives do not arise when debt maturity is sufficiently long

the shadow costs of repos and bank liability structure making use of a structural model that allows for optimal liquidity management we study the role that repos play in a bank s financing structure in our model the bank s assets consist of illiquid loans and liquid reserves and are financed by a combination of repos long term debt deposits and equity repos are a cheap source of funding but they are subject to an exogenous rollover risk we show that the use of repos inflicts two types of indirect shadow costs on the bank s shareholders first it induces the bank to maintain higher liquid reserves in order to alleviate the additional default risk second it adds to the cost of long term debt financing these shadow costs limit the bank s appetite for cheap but unstable repo funding this effect is however weakened under poor returns on risky assets access to deposit funding and the depositor preference rule we also analyze the impact of a liquidity coverage ratio payout restrictions and a leverage ratio on the bank s financing choices and show that all these tools are able to curb the bank s reliance on repos

cash holdings and credit risk intuition suggests that rms with higher cash holdings are safer and should have lower credit spreads yet empirically the correlation between cash and spreads is robustly positive and higher for lower credit ratings this puzzling nding can be explained by the precautionary motive for saving cash in our model endogenously determined optimal cash reserves are positively related to credit risk resulting in a spurious positive correlation between cash and spreads by contrast spreads are negatively related to the exogenous component of cash holdings independent of credit risk factors similarly although rms with higher cash reserves are less likely to default over short horizons longer term endogenously determined liquidity may be positively related to the probability of default our empirical analysis conrms these predictions suggesting that endogenous precautionary savings are central to understanding the eects of cash on credit risk

secession and the limits of taxation toward a theory of internal exit comment the purpose of this note is to correct an error in the seminal article on secession by buchanan and faith 1987 in their paper buchanan and faith neglected an important effect political separation affects markets and consequently individual private incomes

a stochastic frontier approach to modelling financial constraints in firms an application to india we propose the use of stochastic frontier approach to modelling financial constraints of firms the main advantage of the stochastic frontier approach over the stylised approaches that use pooled ols or fixed effects panel regression models is that we can not only decide whether or not the average firm is financially constrained but also estimate a measure of the degree of the constraint for each firm and for each time period and also the marginal impact of firm characteristics on this measure we then apply the stochastic frontier approach to a panel of indian manufacturing firms for the 1997 2006 period in our application we highlight and discuss the aforementioned advantages while also demonstrating that the stochastic frontier approach generates regression estimates that are consistent with the stylised intuition found in the literature on financial constraint and the wider literature on the indian credit capital market

economic growth liquidity and bank runs abstract we construct an endogenous growth model in which bank runs occur with positive probability in equilibrium in this setting a bank run has a permanent effect on the levels of the capital stock and of output in addition the possibility of a run changes the portfolio choices of depositors and of banks and thereby affects the long run growth rate these facts imply that both the occurrence of a run and the mere possibility of runs in a given period have a large impact on all future periods a bank run in our model is triggered by sunspots and we consider two different equilibrium selection rules in the first a run occurs with a fixed exogenous probability while in the second the probability of a run is influenced by banks portfolio choices we show that when the choices of an individual bank affect the probability of a run on that bank the economy both grows faster and experiences fewer runs

liquidation fire sales and acquirers private information abstract we develop a dynamic model in which a distressed firm optimizes an exit choice between sell out and default as well as its timing we assume that the distressed firm is not informed about the acquirer s asset valuation we show that the firm delays liquidation to decrease the acquirer s information rent notably the firm can change the exit choice from sell out to default when the screening cost is high in this case shareholders declare default regardless of the acquirer s valuation which provides the acquirer the maximum information rent together with the deadweight costs of bankruptcy the maximal information rent which causes a wealth transfer from debt holders of the bankrupt firm to the acquirer lowers the sales price and debt recovery this mechanism can explain many empirical findings about fire sales and acquirers excess gains higher volatility leverage and asymmetric information increase the likelihood of a fire sale but higher bankruptcy costs could play a positive role in preventing a fire sale with asymmetric information the firm can reduce debt issuance to avoid the risk of a fire sale

optimal incentive contracts with multiple agents abstract a setting in which a single principal contracts with two agents who possess perfect private information about their own productivity is considered with correlated productivities each agent s private information also provides a signal about the other agent s productivity in contrast to the setting in which there is only one agent it is shown that such private information may be of no value to the agents it is only if the agents are risk averse that their private information may allow them to command rents moreover when the agents are constrained only to reveal their private information truthfully as a nash equilibrium the pareto optimal incentive scheme may induce the agents to adopt strategies other than truth telling this leads to the consideration of truth telling equilibria that are not pareto dominated in the subgame played by the agents among all such equilibria the one preferred by the principal restricts one agent to tell the truth as a dominant strategy and the other as a nash response to truth

optimal debt and equity values in the presence of chapter 7 and chapter 11 explicit presence of reorganization in addition to liquidation leads to conflicts of interest between borrowers and lenders in the first best outcome reorganization adds value to both parties via higher debt capacity lower credit spreads and improved overall firm value if control of the ex ante reorganization timing and the ex post decision to liquidate is given to borrowers most of the benefits are appropriated by borrowers ex post lenders can restore the first best outcome by seizing this control or by the ex post transfer of control rights reorganization is more likely and liquidation is less likely relative to the benchmark case with liquidation only the u s bankruptcy code which includes a liquidation process chapter 7 and a reorganization process chapter 11 aims to resolve a number of important issues associated with a distressed firm these issues can be classified into information asymmetry problems e g quality of the firm heinkel and zechner 1993 agency problems e g risk shifting jensen and meckling 1976 or coordination problems e g debt of various maturities berglof and von thadden 1994 in this paper we investigate whether there is a place for a reorganization process in the presence of costly financial distress and liquidation these costs capture in reduced form the aforementioned frictions we wish to characterize the states of a borrowing firm relative to its outstanding contractual debt obligations at different stages of financial distress assuming full information and a single issue of debt we also seek to determine the role played by the bankruptcy code in improving the welfare of borrowers and lenders and how its influence depends on the rights given to borrowers and lenders at various stages of financial distress more precisely we build on structural models of debt merton 1974 black and cox 1976 which allows us to determine overall firm value along with the values of equity and debt in line with this literature we assume that liquidation destroys part of the firm s value we then ask the basic and yet important

the corporate propensity to save why do corporations accumulate liquid assets we show theoretically that intertemporal trade offs between interest income taxation and the cost of external finance determine optimal savings intriguingly we find that controlling for tobin s q saving and cash flow are negatively related because firms lower cash reserves to invest after receiving positive cash flow shocks and vice versa consistent with theory we estimate negative propensities to save out of cash flow we also find that income uncertainty affects saving more than do external finance constraints therefore contrary to previous evidence saving propensities reflect too many forces to be used to measure external finance constraints

debt valuation renegotiation and optimal dividend policy the valuation of debt and equity reorganization boundaries and firm s optimal dividend policies are studied in a framework where we model strategic interactions between debt holders and equity holders in a game theoretic setting which can accommodate varying bargaining powers to the two claimants two formulations of reorganization are presented debt equity swaps and strategic debt service resulting from negotiated debt service reductions we study the effects of bond covenants on payout policies and distinguish liquidity induced defaults from strategic defaults we derive optimal equity issuance and payout policies the debt capacity of the firm and the optimal capital structure are characterized

term structures of credit spreads with incomplete accounting information we study the implications of imperfect information for term structures of credit spreads on corporate bonds we suppose that bond investors cannot observe the issuer s assets directly and receive instead only periodic and imperfect accounting reports for a setting in which the assets of the firm are a geometric brownian motion until informed equityholders optimally liquidate we derive the conditional distribution of the assets given accounting data and survivorship contrary to the perfect information case there exists a default arrival intensity process that intensity is calculated in terms of the conditional distribution of assets credit yield spreads are characterized in terms of accounting information generalizations are provided

political bargaining in a federation buchanan meets coase abstract in recent decades the issues of federalism and political integration have gained prominence in public debate as well as in the academic realm a frequently made point is that allowing free secession may protect the minority s interests thus providing it with an incentive to enter the federation this paper explicitly considers the political process in the federation arguing that the option to secede may distort the political choices made by the individual regions to improve their bargaining positions as a result the allocation of resources in the federation could well end up being inefficient and unattractive for the minority region in contrast limiting the secession possibilities by requiring the consent of a majority of voters through a regional referendum rather than leaving it to the discretion of the legislature restores efficiency

togetheror separately issues on the costs and benefits of political and fiscal unions abstract around the world one observes a tendency toward political separatism the economic literature generally but not always emphasizes several benefits of large fiscal and therefore political jurisdictions in this paper we discuss several politico economic arguments which reconcile this tension between normative economic models and empirical observations

on the number and size of nations this paper studies the equilibrium determination of the number of countries in different political regimes and in different economic environments with more or less economic integration we focus on the trade off between the benefits of large jurisdictions and the costs of heterogeneity of large and diverse populations our model implies that i democratization leads to secessions ii in equilibrium one generally observes an inefficiently large number of countries iii the equilibrium number of countries is increasing in the amount of economic integration

corporate policies with permanent and transitory shocks we model the financing cash holdings and hedging policies of a firm facing financing frictions and subject to permanent and transitory cash flow shocks the permanent and transitory shocks generate distinct sometimes opposite effects on corporate policies we use the model to develop a rich set of empirical predictions in our model correlated permanent and transitory shocks imply less risk lower cash savings and a drop in the value of credit lines the composition of cash flow shocks affects the cash flow sensitivity of cash which can be positive or negative optimal hedging of permanent and transitory shocks may involve opposite positions

equilibrium bank runs we analyze a banking system in which the class of feasible deposit contracts or mechanisms is broad the mechanisms must satisfy a sequential service constraint but partial or full suspension of convertibility is allowed consumers must be willing to deposit ex ante we show by examples that under the so called optimal contract the postdeposit game can have a run equilibrium given a propensity to run triggered by sunspots the optimal contract for the full predeposit game can be consistent with runs that occur with positive probability thus the diamond dybvig framework can explain bank runs as emerging in equilibrium under the optimal deposit contract