a conference on postcrisis banking this essay provides an introduction to the special issue we focus on four themes which are important for policymakers and researchers alike in view of the experiences of the global financial crisis of 2007 2009 and the ensuing sovereign debt crisis in the euro area the relevance of the banking sector for the real economy the future structure and regulation of the banking sector the efficacy of past and current regulatory reforms and the impact of crossborder banking on economic stability and financial development

taming macroeconomic instability monetary and macro prudential policy interactions in an agent based model abstract we develop an agent based model to study the macroeconomic impact of alternative macro prudential regulations and their possible interactions with different monetary policy rules the aim is to shed light on the most appropriate policy mix to achieve the resilience of the banking sector and foster macroeconomic stability simulation results show that a triple mandate taylor rule focused on output gap inflation and credit growth and a basel iii prudential regulation is the best policy mix to improve the stability of the banking sector and smooth output fluctuations moreover we consider the different levers of basel iii and their combinations we find that minimum capital requirements and counter cyclical capital buffers allow to achieve results close to the basel iii first best with a much more simplified regulatory framework finally the components of basel iii are non additive the inclusion of an additional lever does not always improve the performance of the macro prudential regulation

inverse portfolio problem with coherent risk measures abstract in general a portfolio problem minimizes risk or negative utility of a portfolio of financial assets with respect to portfolio weights subject to a budget constraint the inverse portfolio problem then arises when an investor assumes that his her risk preferences have a numerical representation in the form of a certain class of functionals e g in the form of expected utility coherent risk measure or mean deviation functional and aims to identify such a functional whose minimization results in a portfolio e g a market index that he she is most satisfied with in this work the portfolio risk is determined by a coherent risk measure and the rate of return of investor s preferred portfolio is assumed to be known the inverse portfolio problem then recovers investor s coherent risk measure either through finding a convex set of feasible probability measures risk envelope or in the form of either mixed cvar or negative yaari s dual utility it is solved in single period and multi period formulations and is demonstrated in a case study with the ftse 100 index

nonmonetary effects of the financial crisis in propagation of the great depression this paper examines the effects of the financial crisis of the 1930s onthe path of aggregate output during that period our approach is complementary to that of friedman and schwartz who emphasized the monetary impact of the bank failures we focus on non monetary primarily credit related aspects of the financial sector output link and consider the problems of debtors as well as those of the banking system we argue that the financial disruptions of 1930 33 reduced the efficiency of the credit allocation process and that the resulting higher cost and reduced availability of credit acted to depress aggregate demand evidence suggests that effects of this type can help explain the unusual length and depth of the great depression this abstract was borrowed from another version of this item

a reconsideration of the twentieth century robert a mundell held his prize lecture december 8 1999 at aula magna stockholm university he was presented by lars e o svensson chairman of the prize committee this abstract was borrowed from another version of this item

inverse portfolio problem with mean deviation model abstract a markowitz type portfolio selection problem is to minimize a deviation measure of portfolio rate of return subject to constraints on portfolio budget and on desired expected return in this context the inverse portfolio problem is finding a deviation measure by observing the optimal mean deviation portfolio that an investor holds necessary and sufficient conditions for the existence of such a deviation measure are established it is shown that if the deviation measure exists it can be chosen in the form of a mixed cvar deviation and in the case of n risky assets available for investment to form a portfolio it is determined by a combination of n 1 cvar deviations in the later case an algorithm for constructing the deviation measure is presented and if the number of cvar deviations is constrained an approximate mixed cvar deviation is offered as well the solution of the inverse portfolio problem may not be unique and the investor can opt for the most conservative one which has a simple closed form representation

consequences of bank distress during the great depression the consequences of bank distress for the economy during the depression remain an area of unresolved controversy since john m keynes 1931 and irving fisher 1933 macroeconomists have argued that bank distress magnified the extent of the economic decline during the depression as the intermediaries controlling money and credit banks were in a special position to transmit their distress to other sectors but the mechanism through which banking distress mattered for the economy has been hotly contested milton friedman and anna j schwartz 1963 saw the contraction in the money multiplier driven in their view by panicked depositors withdrawals of deposits as the primary mechanism through which banking distress affected the real economy they described the mechanism transmitting banking distress to the real sector as operating at the national level through changes in the aggregate supply of money and interest rates bank distress reduced the money supply available to the public either through the closure of banks and the consequent freezing of bank deposits or the withdrawals of deposits by depositors that feared bank failure ben s bernanke 1983 building on fisher 1933 emphasized the transmission of monetary shocks via their effects on the balance sheets of borrowers and on the supply of credit by banks borrowers balance sheets were worsened by debt deflation as the result of fixed dollar debt obligations borrowers net worth and cash flow declined with the rising value of debt service costs relative to income borrowers with positive net present value projects but weak balance sheets had less internally generated retained earnings to invest and could not qualify for credit furthermore bernanke argued that the contraction of the money supply produced contraction of nominal income and prices relative to fixed debt service which weakened borrowers balance sheets and in turn weakened banks not only did firms financial distress reduce the number of qualified borrowers the contraction in banks net worth forced a reduction in the supply of bank loans to qualified borrowers many firms and individuals relied on banks for credit and as those banks suffered losses of capital due to asset value declines and contractions in deposits as depositors reacted to bank weakness by withdrawing their funds even borrowers with viable projects and strong balance sheets experienced a decrease in the effective supply of loanable funds bernanke termed the combined weakening of borrowers balance sheets and the contraction in bank credit supply a rise in the cost of credit intermediation the scarcity of perfect substitutes for the positive net present value investments of firms with weak balance sheets and for the credit supplied by existing banks implies that the weakening of firms and banks balance sheets the disappearance of banks and the contraction in surviving banks lending made it more difficult for the economy to channel funds to their best use thus what began as a contraction in aggregate demand became a contraction in aggregate supply which magnified adverse economic shocks and prolonged and deepened the depression the financial distress of firms and banks and the decline in bank lending were not only symptoms of the depression but means for magnifying the shocks that caused the depression bernanke s statistical evidence in support of this story is derived from time series analysis at the national level in calomiris graduate school of business 601 uris hall columbia university 3022 broadway new york ny 10027 and national bureau of economic research e mail cc374 columbia edu mason department of finance drexel university 3141 chestnut street philadelphia pa 19104 e mail joe mason drexel edu we thank valerie ramey david wheelock charles himmelberg steve zeldes gary gorton two referees and seminar participants at columbia university wharton northwestern university and the 2001 economic history association meetings for helpful comments on an earlier draft we gratefully acknowledge support from the national science foundation the university of illinois and the federal reserve bank of st louis

risk neutral parameter shifts and derivatives pricing in discrete time we obtain a large class of discrete time risk neutral valuation relationships or preference free derivatives pricing models by imposing a simple restriction on the state price density process the risk neutral stock return and forward rate dynamics are obtained by changing only a location parameter which can be determined independent of the preference and true location parameters the gaussian models of rubinstein 1976 brennan 1979 and c mera 2003 and the gamma model of heston 1993 are all special cases the model provides simple relationships between expected returns and state price density parameters analogous to the diffusion case

the variance gamma v g model for share market returns a new stochastic process termed the variance gamma process is proposed as a model for the uncertainty underlying security prices the unit period distribution is normal conditional on a variance that is distributed as a gamma variate its advantages include long tailedness continuous time specification finite moments of all orders elliptical multivariate unit period distributions and good empirical fit the process is pure jump approximable by a compound poisson process with high jump frequency and low jump magnitudes applications to option pricing show differential effects for options on the money compared to in or out of the money copyright 1990 by the university of chicago

macroprudential policies capital flows and the structure of the banking sector abstract using a large sample of advanced and emerging market economies over the period 1999 2012 we examine the effectiveness of macroprudential policies mpps in managing cross border bank flows conditioning on the structure of the banking sector in the mpp implementing country we find that higher regulatory quality and a higher credit to deposit ratio increase the effectiveness of mpps while a higher cost to income ratio has the opposite effect if all three financial variables are evaluated at the median the marginal effect of our preferred mpp measure leads to a reduction of international bank inflows in percent of gdp by around half a percentage point and is only marginally significant however when the more enhanced 25th 10th percentiles of their respective distributions are considered we observe as a response to the same mpp measure a reduction of bank inflows by 3 44 5 39 percentage points that is highly statistically and economically significant additionally we find that the structure of the domestic banking sector determines spillovers from mpps across asset classes while spillovers from mpps across countries are a function of banking sector conditions both at home and abroad

on a tight leash does bank organizational structure matter for macroprudential spillovers abstract this paper examines whether the organizational form of multinational banks foreign affiliates affects cross border spillovers of macroprudential regulation we compare changes in the growth of lending provided by foreign banks branches versus subsidiaries in the united kingdom in response to changes in capital requirements lending standards and reserve requirements in foreign banks home countries our results suggest that a tightening of capital requirements at home reduces uk branches interbank lending growth by 5 7 pp more relative to subsidiaries we link this effect to the higher degree of control which parent banks hold over operations of their foreign branches compared to subsidiaries supporting this hypothesis a set of further tests illustrates that the response of foreign affiliates operating under a branch structure is stronger where parent banks are more likely to delegate more decision making authority to the board of directors of their subsidiaries

the multinomial option pricing model and its brownian and poisson limits the cox ross and rubinstein binomial model is generalized to the multinomial case limits are investigated and shown to yield the blacks scholes formula in the case of continuous sample paths for formula in the case of complete market structures in the discontinuous case a merton type formula is shown to result provided jump probabilities are replaced by their corresponding arrow debreu prices article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

international monetary relations taking finance seriously in our book global capital markets integration crisis and growth we traced out the evolution of the international monetary system using the framework of the international monetary trilemma countries can enjoy at most two from the set exchange rate stability open capital markets and domestic monetary autonomy the events of the past decade or more highlight the further complications for this framework posed by financial stability issues here we update and qualify our prior analysis drawing on recent experience and research under the classical gold standard scant attention was paid to macro management either to stabilize output and employment or to ensure financial stability the interwar years highlighted the changing demands for modern central bank interventions in the economy financial instability followed by wwii left a world with sharply constricted financial markets and little private cross border capital mobility due to this historical accident the bretton woods system agreed in 1944 focused not at all on financial stability and focused on issues like adjustment exchange rate misalignment and international liquidity defined in terms of official not private capital account transactions post 1970s floating rates permitted but did not require liberalization of the capital account but the political equilibrium had shifted in favor of financial interests signaled by the push toward european integration and the later reform process in emerging markets starting in the 1990s this development however opened the door once again to domestic financial crises and their international transmission countries now become more susceptible to a new species of capital account crises fueled by bank and bond lending and its sudden withdrawal these developments in fact made evident a different financial trilemma countries can pick at most two from financial stability open capital markets and autonomy over domestic financial policy we distill the main lessons as to the interactions between the monetary and financial trilemmas and policies that could best address the resulting weaknesses

what do we know about the effects of macroprudential policy the literature on the effectiveness of macroprudential policy tools is still in its infancy and has so far provided only limited guidance for policy decisions in recent years however increasing efforts have been made to fill this gap progress has been made in embedding macroprudential policy in theoretical models there is increasing empirical work on the effect of some macroprudential tools on a range of target variables such as quantities and prices of credit asset prices and on the amplitude of the financial cycle and financial stability in this paper we provide a critical review of recent progress in theoretical and empirical research on the effectiveness of macroprudential instruments

capital regulation and the macroeconomy empirical evidence and macroprudential policy abstract we present new evidence on the macroeconomic effects of changes in microprudential bank capital requirements using confidential regulatory data from the basel i and ii regimes in the united kingdom our central result is that an increase in capital requirements lowered lending to firms and households reduced aggregate expenditure and raised credit spreads a financial accelerator effect is found to have amplified the macroeconomic responses to shifts in bank credit supply results from a counterfactual experiment that links capital requirements to house prices and mortgage spreads indicate that tighter macroprudential policy would have had a moderating effect on house price and mortgage lending growth in the early 2000s with easier monetary policy acting to offset its contractionary effects on output

effects of monetary and macroprudential policies evidence from four inflation targeting economies we examine the effects of monetary and macroprudential policies in the asia pacific region where many inflation targeting economies have adopted macroprudential policies in order to safeguard financial stability using structural panel vector autoregressions that identify both monetary and macroprudential policy actions we show that tighter macroprudential policies used to contain credit growth also have a significant negative impact on macroeconomic aggregates such as real gdp and the price level the similar effects of monetary and macroprudential policies may suggest a complementary use of the two policies at normal times however they could also create challenges for policymakers especially during times when low inflation coincides with buoyant credit growth

lessons from the past capital markets during the 19th century and the interwar period on friday 13 august 1982 finance minster jesus silva herzog of mexico made a series of visits to the international monetary fund the federal reserve and the u s treasury his message to each was the same mexico could no longer continue to service its debt thus began a dramatic weekend of negotiations that marked the end of the preceding decade s buoyant expansion of developing country debt and the start of a still continuing response to the sudden collapse

disappointment in decision making under uncertainty decision analysis requires that two equally desirable consequences should have the same utility and vice versa most analyses of financial decision making presume that two consequences with the same dollar outcome will be equally preferred however winning the top prize of 10 000 in a lottery may leave one much happier than receiving 10 000 as the lowest prize in a lottery this paper explores the implications of disappointment a psychological reaction caused by comparing the actual outcome of a lottery to one s prior expectations for decision making under uncertainty explicit recognition that decision makers may be paying a premium to avoid potential disappointment provides an interpretation for some known behavioral paradoxes and suggests that decision makers may be sensitive to the manner in which a lottery is resolved the concept of disappointment is integrated into utility theory in a prescriptive model

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

cross country spillovers from macroprudential regulation reciprocity and leakage abstract in a globally interconnected banking system there can be spillovers from domestic macroprudential policies to foreign banks and vice versa for example through the presence of foreign branches in the domestic economy the lack of reciprocity of some macroprudential instruments may result in an increase in bank flows to those banks with lower regulatory levels a phenomenon known as leakage this may decrease the effectiveness of macroprudential policies in the pursuit of financial stability to explore this topic i consider a two country dsge model with housing and credit constraints borrowers can choose whether to borrow from domestic or foreign banks macroprudential policies are conducted at a national level and are represented by a countercyclical rule on the loan to value ratio results show that when there are some sort of reciprocity agreements on macroprudential policies across countries financial stability and welfare gains are larger than in a situation of non reciprocity an optimal policy analysis shows that in order to enhance the effectiveness of macroprudential policies reciprocity mechanisms are desirable although the foreign macroprudential rule does not need to be as aggressive as the domestic one

time varying capital requirements and disclosure rules effects on capitalization and lending decisions we investigate how banks capital and lending decisions respond to changes in bank specific capital and disclosure requirements we find that an increase in the bank specific regulatory capital requirement results in a higher bank capital ratio brought about via less asset risk a decrease in the requirement implies more lending to firms but also less tier 1 capital and higher bank leverage we do not observe differences between confidential and public disclosure of capital requirements our results empirically illustrate a tradeoff between bank resilience and a fostering of the economy through more bank lending using banks capital requirement as policy instrument

the international transmission of financial shocks the case of japan one of the more dramatic financial events of the late 1980s and early 1990s was the surge in japanese stock prices that was immediately followed by a very sharp decline of more than 50 percent while the unprecedented fluctuations in japanese stock prices were domestic financial shocks the unique institutional characteristics of the japanese economy produce a framework that is particularly suited to the transmission of such shocks to other countries through the behavior of the japanese banking system the large size of japanese bank lending operations in the united states enables us to use u s banking data to investigate the extent to which this domestic japanese financial shock was transmitted to the united states as well as to identify a supply shock to u s bank lending that is independent of u s loan demand we find that binding risk based capital requirements associated with the decline in the japanese stock market resulted in a decline in commercial lending by japanese banks in the united states that was both economically and statistically significant this finding has added importance given the severe real estate loan problems currently faced by japanese banks how japanese bank regulators decide to resolve these problems will have significant implications for credit availability in the united states as well as in other countries with a significant japanese bank presence

technical change sectoral dislocation and barriers to labor mobility factors behind the great recession abstract the global financial and economic crisis which began in late 2007 great recession is the worst international crisis since 1929 great depression and still affects many countries this paper attempts to determine if the theory of extended crises presented by delli gatti et al 2012 is consistent with empirical evidence the analysis is carried out using two approaches the first part of the paper is purely descriptive and is dedicated to a comparison between structural differences and different patterns of development in six countries france germany italy spain uk and us using data on the major world economies klems and stan since 1970 we show that the fundamentals behind the extended crisis theory apply to these economies we focus particularly on italy germany and the us among large economies italy is one of the most affected and still not recovering even though the italian financial sector appeared to have been less exposed to the 2008 shock than other countries the crisis in italy could be directly connected to the failure of the italian economy to move to an economic system based on more skill intensive production in particular in the service sector as in the us the us financial sector was extremely exposed to the 2008 sub prime crisis but us economy recovered much faster than in many european countries germany is the leading european economy generally considered in european public debate as the example to be followed in the last part of the paper the analysis is broadened involving more countries in a panel analysis approach different specifications of panel probit logit models are presented in a first attempt to investigate the roles of both structural features and financial shock in explaining the extent of the crisis in different countries

direct data based decision making under uncertainty abstract in a typical one period decision making model under uncertainty unknown consequences are modeled as random variables however accurately estimating probability distributions of the involved random variables from historical data is rarely possible as a result decisions made may be suboptimal or even unacceptable in the future also an agent may not view data occurred at different time moments e g yesterday and one year ago as equally probable the agent may apply a so called time profile weights to historical data to address these issues an axiomatic framework for decision making based directly on historical time series is presented it is used for constructing data based analogues of mean variance and maxmin utility approaches to optimal portfolio selection

capital asset pricing model capm with drawdown measure the notion of drawdown is central to active portfolio management conditional drawdown at risk cdar is defined as the average of a specified percentage of the largest drawdowns over an investment horizon and includes maximum and average drawdowns as particular cases the necessary optimality conditions for a portfolio optimization problem with cdar yield the capital asset pricing model capm stated in both single and multiple sample path settings the drawdown beta in the capm has a simple interpretation and is evaluated for hedge fund indices from the hfrx database in the single sample path setting drawdown alpha is introduced similarly to the alpha in the classical capm and is evaluated for the same hedge fund indices both drawdown beta and drawdown alpha are used to prioritize hedge fund strategies and to identify instruments for hedging against market drawdowns

the international transmission of bank capital requirements evidence from the uk abstract we use data on uk banks minimum capital requirements to study the impact of changes to bank specific capital requirements on cross border bank loan supply from 1999q1 to 2006q4 by examining a sample in which each recipient country has multiple relationships with uk resident banks we are able to control for demand effects we find a negative and statistically significant effect of changes to banks capital requirements on cross border lending a 100 basis point increase in the requirement is associated with a reduction in the growth rate of cross border credit of 5 5 percentage points we also find that banks tend to favor their most important country relationships so that the negative cross border credit supply response in core countries is significantly less than in others banks tend to cut back cross border credit to other banks including foreign affiliates more than to firms and households consistent with shorter maturity wholesale lending which is easier to roll off and may be associated with weaker borrowing relationships

the capital crunch neither a borrower nor a lender be the dramatic reduction in the growth rate of bank lending associated with the 1990 91 recession particularly in new england has evoked claims by many observers of a credit crunch however because of the difficulty in determining whether the observed slow credit growth is a demand or supply phenomenon convincing evidence of the practical importance of credit crunches for economic activity remains elusive we overcome this obstacle by examining a cross section of banks in new england that have experienced the same economic downturn effectively controlling for changes in demand we find empirical support for a capital crunch whereby poorly capitalized institutions shrink to satisfy capital requirements this alone is not a sufficient condition for a credit crunch however we find s6me additional evidence that the ca ital crunch may have limited credit availability in new england

lessons from the 1930s great depression this paper provides a survey of the great depression comprising both a narrative account and a detailed review of the empirical evidence focusing especially on the experience of the united states we examine the reasons for and flawed resolution of the american banking crisis as well as the conduct of fiscal and monetary policy we also consider the pivotal role of the gold standard in the international transmission of the slump and leaving gold as a route to recovery policy lessons for today from the great depression are discussed as are some implications for macroeconomics

comment on the spillovers interactions and un intended consequences of monetary and regulatory policies by kristin forbes dennis reinhardt and tomasz wieladek journal of monetary economics

empirical tests for stochastic dominance efficiency we derive empirical tests for the stochastic dominance efficiency of a given portfolio with respect to all possible portfolios constructed from a set of assets the tests can be computed using straightforward linear programming bootstrapping techniques and asymptotic distribution theory can approximate the sampling properties of the test results and allow for statistical inference our results could provide a stimulus to the further proliferation of stochastic dominance for the problem of portfolio selection and evaluation using our tests the fama and french market portfolio is significantly inefficient relative to benchmark portfolios formed on market capitalization and book to market equity ratio

financial intermediation and delegated monitoring this paper develops a theory of financial intermediation based on minimizing the cost of monitoring information which is useful for resolving incentive problems between borrowers and lenders it presents a characterization of the costs of providing incentives for delegated monitoring by a financial intermediary diversification within an intermediary serves to reduce these costs even in a risk neutral economy the paper presents some more general analysis of the effect of diversification on resolving incentive problems in the environment assumed in the model debt contracts with costly bankruptcy are shown to be optimal the analysis has implications for the portfolio structure and capital structure of intermediaries

financial protectionism first evidence we examine large public interventions in the financial sector such as bank nationalizations and search for financial protectionism a decrease in the quantity and or an increase in the price of loans that banks from one country make to borrowers resident in another we use a bank level panel data set spanning all u k resident banks between 1997q3 and 2010q1 after nationalization foreign banks reduced their fraction of british loans by about 11 and increased their effective interest rates by about 70 basis points in contrast nationalized british banks did not significantly change either their loan mix or effective interest rates

reputation risk taking and macroprudential policy abstract this paper examines the role of macroprudential capital requirements in preventing inefficient credit booms in a model with reputational externalities in our model unprofitable banks have strong incentives to invest in risky assets when macroeconomic fundamentals are good in order to avoid the stigma of being assessed as low ability by the market we show that across the system countercyclical capital requirements that deter such gambling are constrained optimal when fundamentals are neither extremely weak nor extremely strong

effective macroprudential policy cross sector substitution from price and quantity measures macroprudential policy is increasingly being implemented worldwide key questions are its effectiveness in influencing bank credit and substitution effects beyond banking our results confirm the expected effects of macroprudential policies on bank credit both for advanced economies and emerging market economies but results also confirm substitution effects towards non bank credit especially in advanced economies reducing the policies effect on total credit quantity restrictions are particularly potent in constraining bank credit but also cause the strongest substitution effects policy implications indicate a need to extend macroprudential policy beyond banking especially in advanced economies

bank regulation and the credit crunch abstract this study investigates the direct link between regulatory enforcement actions and the shrinkage of bank loans to sectors likely to be bank dependent we partition the shrinkage due to loan supply into the component due to explicit regulatory enforcement actions and that due to a voluntary response by bank management to low capital to asset ratios we find that banks with formal actions shrink at a significantly faster rate than those without even after controlling for differences in capital to asset ratios furthermore much of the reduced lending has been in categories containing primarily loans to bank dependent borrowers

distance and private information in lending we study the effects of physical distance on the acquisition and use of private information in informationally opaque credit markets using a unique data set of all loan applications by small firms to a large bank we show that borrower proximity facilitates the collection of soft information leading to a trade off in the availability and pricing of credit which is more readily accessible to nearby firms albeit at higher interest rates ceteris paribus analyzing loan rates and firms decision to switch lenders provides further evidence for banks strategic use of private information however distance erodes our lender s ability to collect proprietary intelligence and to carve out local captive markets suggesting that the requisite soft information is primarily local the author 2010 published by oxford university press on behalf of the society for financial studies all rights reserved for permissions please e mail journals permissions oxfordjournals org oxford university press

risk aversion in quiggin and yaari s rank order model of choice under uncertainty this paper studies the rank dependent model of choice under uncertainty proposed by j quiggin in 1982 and elaborated by m e yaari in 1984 first a rigorous axiomatic foundation for the model is provided a very close analogy with expected utility theory is drawn permitting a considerably simplified treatment risk aversion and its measurement are then studied two characterizations one weaker and one stronger are presented in addition to the one considered by yaari lastly risk aversion and other properties of th model are related to empirically observed departures from expected utility maximizing behavior copyright 1987 by royal economic society

a jump diffusion model for option pricing brownian motion and normal distribution have been widely used in the black scholes option pricing framework to model the return of assets however two puzzles emerge from many empirical investigations the leptokurtic feature that the return distribution of assets may have a higher peak and two asymmetric heavier tails than those of the normal distribution and an empirical phenomenon called volatility smile in option markets to incorporate both of them and to strike a balance between reality and tractability this paper proposes for the purpose of option pricing a double exponential jump diffusion model in particular the model is simple enough to produce analytical solutions for a variety of option pricing problems including call and put options interest rate derivatives and path dependent options equilibrium analysis and a psychological interpretation of the model are also presented

europe s great depression coordination failure after the first world war in this paper i survey and reinterpret the extensive literature on europe s great depression i argue that europe could not exploit its vast economic potential after 1918 because the war had not yet come to an end indeed it did not end before 1945 both domestic and international institutions suffered from a lack of reciprocal trust and commitment which can be clearly illustrated in the realm of monetary policy but affected many other areas of policy making such as energy or migration policies these institutions in turn affected expectations and thereby the extent to which for example expansionary policies could be effective

estimating quadratic variation using realized variance this paper looks at some recent work on estimating quadratic variation using realised variance rv that is sums of m squared returns this econometrics has been motivated by the advent of the common availability of high frequency financial return data when the underlying process is a semimartingale we recall the fundamental result that rv is a consistent as m estimator of quadratic variation qv we express concern that without additional assumptions it seems difficult to give any measure of uncertainty of the rv in this context the position dramatically changes when we work with a rather general sv model which is a special case of the semimartingale model then qv is integrated variance and we can derive the asymptotic distribution of the rv and its rate of convergence these results do not require us to specify a model for either the drift or volatility functions although we have to impose some weak regularity assumptions we illustrate the use of the limit theory on some exchange rate data and some stock data we show that even with large values of m the rv is sometimes a quite noisy estimator of integrated variance

optimal monetary and macroprudential policy in a currency union abstract the financial crisis proved strikingly that financial frictions play a crucial role for system risk and policymakers have overlooked financial stability the obvious candidate for addressing financial stability is macroprudential policy in this paper we study the optimal ramsey monetary and macroprudential policy mix in a currency union in the case of different kinds of aggregate and idiosyncratic shocks the monetary and macroprudential instruments are modeled as independent tools with a union wide macroprudential tool full stabilization on the aggregate level is possible but welfare losses due to fluctuations in relative variables prevail with country specific macroprudential tools full stabilization of shocks is always possible but as a rule not optimal evaluating the performance of different policy regimes shows that the additional welfare gains from having country specific macroprudential tools are small and vanish as the ability of the central bank to commit decreases

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

procyclical capital regulation and lending we use a quasi experimental research design to examine the effect of model based capital regulation on the procyclicality of bank lending and firms access to funds in response to an exogenous shock to credit risk in the german economy capital charges for loans under model based regulation increased by 0 5 percentage points as a consequence banks reduced the amount of these loans by 2 1 to 3 9 percentage points more than for loans under the traditional approach with fixed capital charges we find an even stronger effect when we examine aggregate firm borrowing suggesting that microprudential capital regulation can have sizeable real effects

capital requirements and bank behavior in the uk are there lessons for international capital standards abstract the financial crisis prompted widespread interest in developing a better understanding of how capital regulation drives bank behavior this paper uses a unique comprehensive database of regulatory capital requirements on all uk banks to examine their effects on capital lending and balance sheet management behavior we find that capital requirements that include firm specific time varying add ons set by supervisors affect banks desired capital ratios and that resulting adjustments to capital and lending depend on the gap between actual and target ratios we use these results to measure the effects of a capital regime that includes features similar to those embedded in the uk framework our results suggest that countercyclical capital requirements may be less effective in slowing credit activity when banks can readily satisfy them with lower quality lower costing capital elements versus higher quality common equity given the size of the uk banking sector and the global nature of many of the largest institutions in the uk banking sector the results have implications for the ongoing debate surrounding the design and calibration of international capital standards

dampened power law reconciling the tail behavior of financial security returns this article proposes a stylized model that reconciles several seemingly conflicting findings on financial security returns and option prices the model is based on a pure jump levy process wherein the jump arrival rate obeys a power law dampened by an exponential function the model allows for different degrees of dampening for positive and negative jumps and also for different pricing for upside and downside market risks calibration of the model to the s p 500 index shows that the market charges only a moderate premium on upward index movements but the maximally allowable premium on downward index movements

borrowing relationships intermediation and the cost of issuing public securities abstract this paper investigates how an established borrowing relationship affects the costs associated with initial public offerings of equity our model illustrates how the existence of a borrowing relationship reduces the ex ante uncertainty about the value of the issuing firm s equity in the secondary market if underpricing is related to uncertainty a borrowing relationship can reduce underpricing empirically we find that other things equal ipos of firms with previously established borrowing relationships are underpriced substantially less than other ipos

maxmin expected utility over savage acts with a set of priors abstract this paper provides an axiomatic foundation for a maxmin expected utility over a set of priors mmeu decision rule in an environment where the elements of choice are savage acts this characterization complements the original axiomatization of mmeu developed in a lottery acts or anscombe aumann framework by i gilboa and d schmeidler 1989 j math econ 18 141 153 mmeu preferences are of interest primarily because they provide a natural and tractable way of modeling decision makers who display an aversion to uncertainty or ambiguity the novel axioms are formulated using standard sequence techniques which allow cardinal properties of utility to be expressed directly through preferences journal of economic literature classification number d81

case based decision theory this paper suggests that decision making under uncertainty is at least partly case based we propose a model in which cases are primitive and provide a simple axiomatization of a decision rule that chooses a best act based on its past performance in similar cases each act is evaluated by the sum of the utility levels that resulted from using this act in past cases each weighted by the similarity of that past case to the problem at hand the formal model of case based decision theory naturally gives rise to the notions of satisficing decisions and aspiration levels

fetters of gold and paper we describe in this essay why the gold standard and the euro are extreme forms of fixed exchange rates and how these policies had their most potent effects in the worst peaceful economic periods in modern times while we are lucky to have avoided another catastrophe like the great depression in 2008 9 mainly by virtue of policy makers aggressive use of monetary and fiscal stimuli the world economy is still experiencing many difficulties as in the great depression this second round of problems stems from the prevalence of fixed exchange rates fixed exchange rates facilitate business and communication in good times but intensify problems when times are bad

an fft network for levy option pricing abstract this paper develops a simple network approach to american exotic option valuation under levy processes using the fast fourier transform fft the forward shooting grid fsg technique of the lattice approach is then generalized to expand the fft network to accommodate path dependent variables this network pricing approach is applicable to all levy processes for which the characteristic function is readily available in other words the log value of the underlying asset can follow finite activity or infinite activity levy processes with the powerful computation of fft the proposed network has a negligible additional computational burden compared to the binomial tree approach the early exercise policy and option values in the continuation region are determined in a way very similar to that of the lattice approach numerical examples using american style barrier lookback and asian options demonstrate that the fft network is accurate and efficient

the synchronization of credit cycles abstract this paper proposes a simple econometric procedure to test for the synchronization of credit cycles using a century of data for 14 advanced economies we find that credit cycle synchronization dropped in the early 1920s from initially relatively high levels between the 1920s and the 1970s synchronization was overall low and concentrated within five predominantly regional clusters however synchronization has significantly increased in the post bretton woods era and has become less associated with geographic proximity australia denmark france italy japan norway spain switzerland the uk and the us form a single major credit cycle cluster since the 1970s a smaller cluster is formed by canada the netherlands and sweden while the german credit cycle follows a distinct path using logistic regressions we find that the synchronization of credit and business cycles go hand in hand our findings are especially relevant for the international coordination of macroprudential policy as well as to spur and inform further analysis on credit cycle dynamics

the spillovers interactions and un intended consequences of monetary and regulatory policies abstract have bank regulatory policies and unconventional monetary policies and any possible interactions been a factor behind the recent deglobalisation in cross border bank lending to test this hypothesis we use bank level data from the uk a country at the heart of the global financial system our results suggest that increases in microprudential capital requirements tend to reduce international bank lending and some forms of unconventional monetary policy can amplify this effect specifically the uk s funding for lending scheme fls significantly amplified the effects of increased capital requirements on cross border lending quantitative easing did not appear to have a similar effect and countries with stronger prudential capital regulations were partially insulated against the effects of these changes in uk policy we find that this interaction between microprudential regulations and the fls can explain roughly 30 of the contraction in aggregate uk cross border bank lending between mid 2012 and end 2013 corresponding to around 10 of the global contraction in cross border lending this suggests that unconventional monetary policy designed to support domestic lending can have the unintended consequence of reducing foreign lending

a general distribution for describing security price returns this paper introduces a generalized distribution called the gb2 distribution for describing security returns the distribution is extremely flexible containing a large number of well known distributions such as the lognormal log t and log cauchy distribu tions as special or limiting cases and allowing large even infinite higher moments this flexibility allows a direct representation of different degrees of fat tails in the distribution the properties of the gb2 make it useful in empirical estimation of security returns and in facilitating the development of option pricing models and other models that depend on the specification and mathematical manipulation of distributions copyright 1987 by the university of chicago

an empirical examination of the variance gamma model for foreign currency options we apply the variance gamma vg option pricing model to currency options the model is a pure infinite activity jump model we examine whether and to what extent this new model can improve the pricing quality for currency options over the existing modified black scholes model and the merton jump diffusion jd model we find that the vg model yields better out of sample pricing performance than the modified black scholes model or the jd model in addition a cross entropy analysis shows that the vg model is more consistent with the general criterion of utility maximization and optimal portfolio selection

policy mandates and institutional architecture abstract the model developed in this paper examines the interaction between monetary and macroprudential policies in promoting macroeconomic stability highlighting the role of shocks and policy instruments the paper shows that assigning the mandates of monetary and financial stability to independent authorities enhances macroeconomic stability only when some level of coordination exists between policymakers and it is the dominant institutional arrangement when monetary stability is socially important instead when society values financial stability internalising the policy spillovers by assigning the two mandates to a single policymaker could become the dominant configuration depending on the model s parameter values

how does credit supply respond to monetary policy and bank minimum capital requirements abstract we use data on uk banks minimum capital requirements to study the interaction of monetary policy and capital requirement regulation uk banks were subject to both time varying capital requirements and changes in interest rate policy tightening of either capital requirements or monetary policy reduces the supply of lending lending by large banks reacts substantially to capital requirement changes but not to monetary policy changes lending by small banks reacts to both there is little evidence of interaction between these two policy instruments the differences in the responses of small and large banks identify important distributional consequences within the financial system of these two policy instruments finally our findings do not corroborate theoretical models that raise concerns about complex interactions between monetary policy and macro prudential variation in capital requirements

banks incentives and inconsistent risk models this paper investigates banks incentive to bias the risk estimates they report to regulators within loan syndicates we find that banks with less capital report lower risk estimates consistent with an effort to mitigate capital requirements the sensitivity to capital is robust to bank fixed effects and greater for large risky and opaque credits also low capital banks risk estimates have less explanatory power than those of high capital banks with regard to loan prices indicating that their estimates incorporate less information our results suggest banks underreport risk in response to capital constraints and highlight the perils of regulation premised on self reporting received september 21 2016 editorial decision september 18 2017 by editor philip strahan authors have furnished an internet appendix which is available on the oxford university press web site next to the link to the final published paper online

macroprudential policies and housing prices a new database and empirical evidence for central eastern and southeastern europe several countries in central eastern and southeastern europe used a rich set of prudential instruments during the recent credit and housing boom and bust cycles we construct a comprehensive database of these policy measures covering 16 countries at a quarterly frequency we use this database to investigate whether the policy measures had an impact on housing price inflation the measures that appeared to be effective were capital measures minimum capital adequacy ratio maximum ratio of lending to households to share capital and nonstandard liquidity measures marginal reserve requirements mrrs on foreign funding mrrs linked to credit growth

from financial crisis to great recession the role of globalized banks this paper provides evidence of the role of globalized banks in transmitting financial stresses to the real economy during the global financial crisis a novel dataset is constructed from quarterly balance sheet reports provided by all uk resident banks to the bank of england i find that the shock to bank funding from non resident creditors was transmitted domestically through a significant reduction in bank credit supply resident subsidiaries and branches of foreign owned banks reduced lending by a larger amount than domestically owned banks while the latter calibrated the reduction in domestic lending more closely to the size of the funding shock

cross of euros the eurozone currently confronts severe short run macroeconomic adjustment problems and a deficient institutional architecture that has to be reformed in the longer run europe s efforts at economic and monetary union are historically unprecedented however the gold standard provides lessons regarding what will and won t work macroeconomically and politically in the short run while us history provides long run lessons regarding appropriate institutional structures the latter also suggests that institutional reform only happens at times of great crisis and that it cannot be taken for granted the eurozone s leaders may therefore ultimately have to take heed of the lessons of history regarding currency union breakups