monetary policy and uncertainty in an empirical small open economy model this paper explores optimal policy design in an estimated model of three small open economies australia canada and new zealand within a class of generalized taylor rules we show that to stabilize a weighted objective of output consumer price in ation and nominal interest variation optimal policy does not respond to the nominal exchange this is despite the presence of local currency pricing and due in large part to observed exchange rate disconnect in these economies optimal policies that account for the uncertainty of model estimates as captured by the parameters posterior distrbution similarly exhibit a lack of exchange rate response in contrast to brainard 1967 the presence of parameter uncertainty can lead to more or less aggressive policy responses depending on the model at hand

comparing four models of aggregate fluctuations due to self fulfilling expectations abstract this paper compares four equilibrium business cycle models with increasing returns to scale production technologies that allow for aggregate fluctuations due to self fulfilling expectations necessary and sufficient conditions for the existence of stationary sunspot equilibria are derived numerical examples demonstrate that the degree of increasing returns necessary for the existence of stationary sunspot equilibria lies in the upper range of available empirical estimates the paper also shows that persistent fluctuations are not a necessary property of these four models when the only source of fluctuations is changes in people s expectations about the future path of the economy journal of economic literature classification numbers e32 d43

optimal international hedging in commodity and currency forward markets abstract this paper derives optimal hedging and production rules for an exporting firm which faces both commodity price and foreign exchange rate uncertainty the size of the commodity hedge is independent of the properties of the foreign exchange market however the optimal foreign exchange hedge depends on the commodity hedge and the properties of the commodity forward market the firm s production decision is independent of its objective function if both forward markets exist but depends on the consumption beta of the unhedgeable risks in the absence of one or both of the markets

money liquidity and monetary policy in a market based financial system banking and capital market developments are inseparable and funding conditions are closely tied to fluctuations in the leverage of market based financial intermediaries offering a window on liquidity the balance sheet growth of broker dealers provides a sense of the availability of credit contractions of broker dealer balance sheets have tended to precede declines in real economic growth even before the current turmoil for this reason balance sheet quantities of market based financial intermediaries are important macroeconomic state variables for the conduct of monetary policy

interpreting the macroeconomic time series facts the effects of monetary policy existing theory and evidence on the effects of monetary policy are reviewed substantial room for disagreement among economists remains new evidence based on multivariate time series studies of several countries is presented while certain patterns in the data consistent with effective monetary policy are strikingly similar across countries others particularly the tendency of interest rate increases to predict high inflation are harder to reconcile with effective monetary policy

testing for indeterminacy an application to u s monetary policy reply this paper considers a prototypical new keynesian model in which the equilibrium is undetermined if monetary policy is passive the likelihood based estimation of dynamic equilibrium models is extended to allow for indeterminacies and sunspot fluctuations we construct posterior weights for the determinacy and indeterminacy region of the parameter space and estimates for the propagation of fundamental and sunspot shocks according to the estimated model u s monetary policy post 1982 is consistent with determinacy whereas the pre volcker policy is not we find that before 1979 indeterminacy substantially altered the propagation of shocks

does macro prudential regulation leak evidence from a uk policy experiment the regulation of bank capital as a means of smoothing the credit cycle is a central element of forthcoming macro prudential regimes internationally for such regulation to be effective in controlling the aggregate supply of credit it must be the case that i changes in capital requirements affect loan supply by regulated banks and ii unregulated substitute sources of credit are unable to offset changes in credit supply by affected banks this paper examines micro evidence lacking to date on both questions using a unique data set in the uk regulators have imposed time varying bank specific minimum capital requirements since basel i it is found that regulated banks uk owned banks and resident foreign subsidiaries reduce lending in response to tighter capital requirements but unregulated banks resident foreign branches increase lending in response to tighter capital requirements on a relevant reference group of regulated banks this leakage is substantial amounting to about one third of the initial impulse from the regulatory change

current real business cycle theories and aggregate labor market fluctuations hours worked and the return to working are weakly correlated traditionally the ability to account for this fact has been a litmus test for macroeconomic models existing real business cycle models fail this test dramatically we modify prototypical real business cycle models by allowing government consumption shocks to influence labor market dynamics this modification can in principle bring the models into closer conformity with the data our empirical results indicate that it does

price stability with imperfect financial integration this paper studies whether the international monetary system can be affected by asymmetries in the cross country positions in the international financial markets i e the fact that some countries are large debtors while others are creditors an important channel that is explored is the interaction between international risk sharing and the stabilization role of monetary policy in each country the main finding is that the welfare costs of incomplete markets and the gains of deviating from a policy of price stability are increasing with the cross country asymmetries in the initial net international positions and in particular they become nonnegligible when the persistence of the shocks increases 1 of a permanent shift in steady state consumption for the welfare costs of incomplete markets and 0 2 for the gains of deviating from a policy of price stability when global imbalances become larger optimal monetary policy requires an increase in the volatilities of the real returns on assets and in particular of the nominal interest rates which should happen to be more correlated across countries

the myth of financial innovation and the great moderation financial innovation is widely believed to be at least partly responsible for the recent financial crisis at the same time there are empirical and theoretical arguments that support the view that changes in financial markets in particular innovations in consumer credit and home mortgages played a role in the great moderation this article questions empirical evidence supporting this view especially the behaviour of aggregate home mortgages changed less during the great moderation than is typically believed a remarkable change we do find is that monetary tightenings became episodes during which financial institutions other than banks increased their mortgages holdings

cross hedging under multiplicative basis risk cross hedging price risk in an incomplete financial market creates basis risk we propose a new way of modeling basis risk where price risk and basis risk are combined in a multiplicative way under this specification positive prudence is a necessary and sufficient condition for underhedging in an unbiased market using the example of cross hedging jet fuel price risk with crude oil futures we show that the new specification is superior in describing the price series and that optimal cross hedges differ significantly from those derived under the traditional additive cross hedging model

indeterminacy under constant returns to scale in multisector economies recently there has been a renewed interest in indeterminacy or alternatively put in the existence of a continuum of equilibria in dynamic economies that exhibit some market imperfections one of the primary concerns of this literature has been the empirical plausibility of indeterminacy which arises in markets with external effects or with monopolistic competition often coupled with some degree 10 of increasing returns

the effects of the fed s monetary tightening campaign on nonbank mortgage lending abstract we examine the response of mortgage credit volumes to the fed s planned monetary tightening campaign of continued policy rate increases and slowed future purchases of agency securitized mortgages a shadow policy rate measures unconventional policy tools used at the zero lower bound after the great recession our results from a time varying parameter factor augmented var model show that a policy rate increase identified with sign restrictions shifts mortgage lending from banks to less regulated nonbanks more mortgage funding comes from increased issuance of agency rather than private label securitized mortgages

business cycle measurement with some theory a method to evaluate cyclical models not requiring knowledge of the dgp and the exact specification of the aggregate decision rules is proposed we derive robust restrictions in a class of models use some to identify structural shocks in the data and others to evaluate the class or contrast sub models the approach has good properties even in small samples and when the class of models is misspecified the method is used to sort out the relevance of a certain friction the presence of rule of thumb consumers in a standard class of models

financial crises bank risk exposure and government financial policy a macroeconomic model with nancial intermediation is developed in which the intermediaries banks can issue outside equity as well as short term debt this makes bank risk exposure an endogenous choice the goal is to have a model that can not only capture a crisis when banks are highly vulnerable to risk but can also account for why banks adopt such a risky balance sheet in the rst place we use the model to assess quantitatively how perceptions of fundamental risk and of government credit

capacity utilization under increasing returns to scale abstract this paper overcomes an important objection against the empirical relevance of the benhabib farmer model as a potential account of actual business cycle fluctuations this is attributable to an elasticity effect and a returns to scale effect of capacity utilization these effects are closely related to the empirical puzzles that capital appears to play an insignificant role in explaining cyclical movements in output and that the estimated labor elasticity appears to be larger than labor s share due to these effects multiple equilibria and persistent fluctuations can easily occur in a growth model for externalities mild enough so that the aggregate labor demand curve is downward sloping analyses show that the propagation mechanism generated by capacity utilization under mild increasing returns is capable of explaining the periodic patterns of u s business cycles documented by watson journal of economic literature classification numbers e32 e22 c52

financial intermediation and macroeconomic analysis a macroeconomic framework in which fi nancial intermediation matters for the allocation of resources allocation of resources in this paper i fi rst discuss why neither standard macroeconomic models that in this paper i fi rst discuss why neither standard macroeconomic models that abstract from fi nancial intermediation nor traditional models of the bank lending abstract from fi nancial intermediation nor traditional models of the bank lending channel are adequate as a basis for understanding the recent crisis i argue that channel are adequate as a basis for understanding the recent crisis i argue that instead we need models in which intermediation plays a crucial role but in which instead we need models in which intermediation plays a crucial role but in which intermediation is modeled in a way that better conforms to current institutional intermediation is modeled in a way that better conforms to current institutional realities in particular we need models that recognize that a market based fi nan realities in particular we need models that recognize that a market based fi nan cial system one in which intermediaries fund themselves by selling securities in cial system one in which intermediaries fund themselves by selling securities in competitive markets rather than collecting deposits subject to reserve require competitive markets rather than collecting deposits subject to reserve require ments is not the same as a frictionless system ments is not the same as a frictionless system i then sketch the basic elements of an approach that allows fi nancial inter i then sketch the basic elements of an approach that allows fi nancial inter mediation and credit frictions to be integrated into macroeconomic analysis in a mediation and credit frictions to be integrated into macroeconomic analysis in a straightforward way i show how the model can be used to analyze the macroeco straightforward way i show how the model can be used to analyze the macroeco nomic consequences of the recent fi nancial crisis and conclude with a discussion of nomic consequences of the recent fi nancial crisis and conclude with a discussion of some implications of the model for the conduct of monetary policy some implications of the model for the conduct of monetary policy

a macroprudential approach to financial regulation many observers have argued that the regulatory framework in place prior to the global financial crisis was deficient because it was largely microprudential in nature a microprudential approach is one in which regulation is partial equilibrium in its conception and aimed at preventing the costly failure of individual financial institutions by contrast a macroprudential approach recognizes the importance of general equilibrium effects and seeks to safeguard the financial system as a whole in the aftermath of the crisis there seems to be agreement among both academics and policymakers that financial regulation needs to move in a macroprudential direction in this paper we offer a detailed vision for how a macroprudential regime might be designed our prescriptions follow from a specific theory of how modern financial crises unfold and why both an unregulated financial system as well as one based on capital rules that only apply to traditional banks is likely to be fragile we begin by identifying the key market failures at work why individual financial firms acting in their own interests deviate from what a social planner would have them do next we discuss a number of concrete steps to remedy these market failures we conclude the paper by comparing our proposals to recent regulatory reforms in the united states and to proposed global banking reforms

optimal bidding and hedging in international markets this paper examines the optimal bidding and hedging decisions of a risk averse contractor for a construction project abroad we show that currency options play no role as a hedging instrument when the contractor has a quadratic utility function however if the contractor is prudent currency options are used for hedging purposes prudence thus generates a hedging demand for currency options when foreign exchange exposure is uncertain contrary to the conventional wisdom we show that currency hedging may have perverse effects on the contractor s bidding behavior in a canonical example with negative exponential utility functions we demonstrate that the possibilities for the contractor to bid more aggressively in the absence of currency hedging are not factitious

international trade with forward futures markets under exchange rate and price uncertainty abstract the paper examines a risk averse firm s decisions on the level of trade when the exchange rate and the commodity price are uncertain and the extent of forward exchange and commodity futures commitments first we verify the separation theorem and the full double hedging theorem second we investigate the implications of the existence of both forward foreign exchange and commodity futures markets in comparison to the case where only one or no market is available to the firm the second exercise enables us to focus on conditions under which establishing forward futures arrangements promotes international trade

indeterminacy home production and the business cycle a calibrated analysis abstract in this paper i present a business cycle model with one market sector that produces a standard good and another that produces a non market or home good the model can have multiple equilibria and therefore cycles driven only by self fulfilling expectations with low externalities to market production in particular an upward sloping aggregate labor demand as e g in farmer and guo j economic theory 63 1994 42 72 is not required for indeterminacy the effect of technology shocks is also studied in all cases the time series that are generated have properties that are comparable to the real us postwar series

spotting sunspots some evidence in support of models with self fulfilling prophecies abstract this paper adds financial assests to roger farmer s business cycle model with increasing returns and self fulfilling beliefs by using information from the financial markets in conjunction with the structure of the model we can uncover from financial data the belief shocks that drive the model specifically we assume that belief shocks drive both economic fluctuations and asset returns the financial market information allows us to identify these shocks we use our methods to generate dynamic simulations of the model and show that it has incremental predictive power for key us time series

aggregate returns to scale and embodied technical change theory and measurement using stock market data abstract we develop a new general equilibrium growth accounting framework that features increasing returns to scale imperfect competition and incorporates technological revolutions into the description of technical progress we propose a way to tell apart revolutionary changes in technology and incremental innovations using stock market data we use our framework to jointly estimate the overall embodied tfp change during 1953 1995 and the aggregate output elasticity we find that the it revolution raised the aggregate tfp level by about 20 we suggest a 1 09 1 11 range for the aggregate returns to scale

monetary policy and rational asset price bubbles i examine the impact of alternative monetary policy rules on a rational asset price bubble through the lens of an olg model with nominal rigidities a systematic increase in interest rates in response to a growing bubble is shown to enhance the uctuations in the latter

indirect hedging of exchange rate risk abstract the purpose of this study is to investigate the impact of exchange rate risk upon export production when the firm cannot engage in a direct forward hedge in the exchange rate however there exists a forward market for a domestic financial asset correlated with the exchange rate in question exporting firms using such an indirect hedging device to reduce foreign exchange risk do not necessarily increase their output when such unbiased hedging market becomes available this contrasts with the well known result in the case of direct hedging

do contractionary monetary policy shocks expand shadow banking summary using var models for the usa we find that a contractionary monetary policy shock has a persistent negative impact on the level of commercial bank assets but increases the assets of shadow banks and securitization activity to explain this waterbed effect we propose a standard new keynesian model featuring both commercial and shadow banks and we show that the model comes close to explaining the empirical results our findings cast doubt on the idea that monetary policy can usefully get in all the cracks of the financial sector in a uniform way

monetary policy and risk taking abstract we assess the effects of monetary policy on bank risk to verify the existence of a risk taking channel monetary expansions inducing banks to assume more risk we first present var evidence confirming that this channel exists and is particularly significant on the bank funding side then to rationalize this evidence we build a macroeconomic model where banks subject to runs endogenously choose their funding structure deposits vs capital and risk level a monetary expansion increases bank leverage and risk in turn higher bank risk in steady state increases asset price volatility and reduces equilibrium output

limited asset markets participation monetary policy and inverted aggregate demand logic abstract this paper incorporates limited asset markets participation in dynamic general equilibrium and develops a simple analytical framework for monetary policy analysis aggregate dynamics and stability properties of an otherwise standard business cycle model depend nonlinearly on the degree of asset market participation while moderate participation rates strengthen the role of monetary policy low enough participation causes an inversion of results dictated by conventional wisdom the slope of the is curve changes sign the taylor principle is inverted optimal welfare maximizing discretionary monetary policy requires a passive policy rule and the effects and propagation of shocks are changed however a targeting rule implementing optimal policy under commitment delivers equilibrium determinacy regardless of the degree of asset market participation our results may justify fed s behavior during the great inflation period

the structural dynamics of output growth and inflation some international evidence we examine the dynamics of output growth and inflation in the us euro area and uk using a structural time varying coefficient var there are important similarities in structural inflation dynamics across countries output growth dynamics differ swings in the magnitude of inflation and output growth volatilities and persistences are accounted for by a combination of three structural shocks changes over time in the structure of the economy are limited and permanent variations largely absent changes in the volatilities of structural shocks matter

shadow banks and macroeconomic instability we develop a macroeconomic model in which in which commercial banks can o oad risky loans to a highly levered shadow banking sector and financial intermediaries trade in securitized assets we highlight the liquidity creation role played by securitization we show how an endogenous tightening of credit constraints can exacerbate the e ect of shocks by limiting the ability of shadow banks to supply collateral and of banks to securitize the model is able to reproduce the cyclical behavior of bank and non bank credit and leverage macroeconomic shocks that directly impact the worth of financial sector are particularly harmful to economic activity but purely redistributive intra financial shocks can also generate recessions we discuss how government policy can stabilize the securitization market when the shadow banking system becomes impaired

fiscal policy shocks and stock prices in the united states this paper uses a range of structural vars to show that the response of us stock prices to fiscal shocks changed in 1980 over the period 1955 1980 an expansionary spending or revenue shock was associated with modestly higher stock prices after 1980 along with a decline in the fiscal multiplier the response of stock prices to the same shock became negative and larger in magnitude we use an estimated dsge model to show that this change is consistent with a switch from an economy characterised by active fiscal policy and passive monetary policy to one where fiscal policy was passive and the central bank acted aggressively in response to inflationary shocks

the role of interbank markets in monetary policy a model with rationing the empirical research on monetary transmission has reported a number of puzzles challenging extant theoretical models of the transmission mechanism in this paper we argue that asymmetric information in the interbank market may be important to have a better understanding of the mechanisms at work in the transmission process we show that asymmetric information may induce an equilibrium with rationing this in turn has two major implications first it reconciles the apparent irresponsiveness of business investment to the user cost of capital with the large impact of monetary policy magnitude puzzle and second it shows that this impact will not be limited to short term credit supply but will also affect long term lending even if the corresponding interest rate is unaffected composition puzzle

firm dynamics and markup variations implications for sunspot equilibria and endogenous economic fluctuations this paper analyzes how the interaction between firms entry and exit decisions and variations in competition gives rise to self fulfilling expectation driven fluctuations in aggregate economic activity and in measured total factor productivity tfp the analysis is based on a dynamic general equilibrium model in which net business formation is endogenously procyclical and leads to endogenous countercyclical variations in markups this interaction leads to indeterminacy in which economic fluctuations occur as a result of self fulfilling shifts in the beliefs of rational forward looking agents when calibrated with empirically plausible parameter values and driven solely by self fulfilling shocks to expectations the model can quantitatively account for the main empirical regularities characterizing postwar u s business cycles and for 65 of the fluctuations in measured tfp

some unpleasant general equilibrium implications of executive incentive compensation contracts abstract we consider a simple real business cycle model in which shareholders hire self interested executives to manage their firm a generic family of compensation contracts similar to those employed in practice is studied when compensation is convex in the firm s dividend an increase in the firm s output results in a more than proportional increase in the managers income incentive contracts of sufficient yet modest convexity are shown to result in an indeterminate general equilibrium one in which business cycles are driven by self fulfilling fluctuations in managers expectations the proposed family of contracts may yield first best outcomes for specific parameter choices

discriminating monopoly forward markets and international trade recent empirical studies see e g kravis and lipsev 1977 1978 isard 1977 aspe and giavazi 1982 demonstrate that there are notable divergencies between domestic and export prices this empirical evidence suggests that the law of one price is systematically violated kravis and lipsey 1977 p 155 argue that many firms involved in international trade particularly manufacturers are in the position of a discriminating monopolist faced with separate markets each characterized by a different demand elasticity a model which explicitly allows for price discrimination has been used by several authors see for example aspe and giavazi 1982 ethier 1982 katz paroush and kahana 1982 and tarr 1979 katz paroush and kahana 1982 hereafter kpk used a model of a price discriminating firm which operates under price uncertainty to investigate its optimal level of output and sales in the two markets the main assumption made in kpk 1982 is that the firm determines its level of output and the allocation of sales between the two markets before the resolution of uncertainty furthermore no forward markets were available to this firm in this paper we analyze a price discriminating firm which sells its produce both in the domestic and on world markets under either exchange rate uncertainty or foreign price uncertainty this firm is a monopoly in the domestic market but a price taker on the world market our model differs substantially from the kpk model and in some cases conforms better with reality due to the following two assumptions first the firm determines its level of output before the resolution of uncertainty but decides about the optimal allocation of sales only after it observes the foreign price denominated in domestic currency secondly forward markets to share the exchange rate risk or the uncertain foreign commodity price are available and their impact on the firm s policy is analyzed hence this work integrates two strands of literature it combines studies on price discriminating firms some were mentioned above and studies on firm behavior when forward markets are available danthine 1978 holthausen 1979 katz and paroush 1979 feder just and schmitz 1980 in this paper we are mainly concerned with a firm which always exports this includes large