assessing the effects of co2 price caps on electricity investments a real options analysis abstract this paper uses real options modeling to assess the impact of different climate change policy instruments on investment profits and cumulative emissions in the electricity sector even though co 2 price caps or safety valves have been suggested as methods to limit uncertainty emanating from fluctuating prices of co 2 permits that would hurt the industry s profit and thereby also energy security our analysis shows that price caps set at a too low level are detrimental to the adoption of e g modern biomass fired capacity as a replacement for existing coal fired power plants we therefore conduct a series of experiments with different policy scenarios to analyze under which regime emissions are most effectively reduced with respect to co 2 price uncertainty it turns out that even for moderately rising co 2 prices fluctuations frequently lead to investment into carbon capture and storage ccs while investment is often not triggered in the face of deterministic co 2 prices

simulating stock returns under switching regimes a new test of market efficiency a model of profits switches between four regimes with fixed probabilities the rationally expected profits stream implies the stock market value this efficient market model is not rejected by uk post war time series behaviour of either profits or the ftse index

germany s dash for coal exploring drivers and factors abstract the german electricity sector has recently seen extensive planning and construction of new coal fired power plants within a period of only a few years new investments amounting to around 15 of the total sector capacity were brought on the way and plans for a multitude of additional projects are pending this dash for coal in germany has raised considerable public concern especially as it risks to undermine recent political attempts to combat global warming yet the question of why the dash for coal has emerged has not yet been addressed in a thorough analysis this article attempts to close this research gap while at the same time contributing as a case study to the general understanding of investment patterns in liberalized electricity markets it finds that the main reasons for the dash have been 1 replacement requirements due to the nuclear phase out 2 the onset of a new investment cycle in the power market 3 favorable economic and technological prospects for coal compared with natural gas in the long run 4 a status quo bias of investors in regard to future renewable deployment 5 explicit political support for coal and 6 the ineffectiveness of public protest in hampering new projects

money income prices and interest rates including data from the 1980s sharply weakens the postwar time series evidence indicating significant relationships between money however defined and nominal income or between money and either real income or prices separately focusing on data from 1970 onward destroys this evidence altogether evidence indicating cointegration of real income and real money balances with due allowance for the effect of interest rates also deteriorates when the sample extends through the 1980s a positive finding is that the spread between the commercial paper rate and the treasury bill rate consistently contains highly significant information about future movements in real income copyright 1992 by american economic association

solving asset pricing models when the price dividend function is analytic we present a new method for solving asset pricing models which yields an analytic price dividend function of one state variable to illustrate our method we give a detailed analysis of abel s asset pricing model a function is analytic in an open interval if it can be represented as a convergent power series near every point of that interval in addition to allowing us to solve for the exact equilibrium price dividend function the analyticity property also lets us assess the accuracy of any numerical solution procedure used in the asset pricing literature

can a well fitted equilibrium asset pricing model produce mean reversion in recent papers cecchetti et al 1990 and kandel and stambaugh 1990 showed that negative serial correlation in long horizon returns was consistent with an equilibrium model of asset pricing in this paper we show that their results rely on misspecified markov switching models for the endowment process once the proper markov specification is chosen for the endowment process the model does not produce mean reversion of the magnitude detected in the data furthermore the small amount of mean reversion produced by the model is due only to small sample bias we also show that this model is unable to predict negative excess returns contrary to empirical evidence

measures of fit for rational expectations models this survey provides a detailed description of some of the recent theoretical and empirical literature on rational expectations econometrics the survey pays special attention to non stationarity of the data and to the various methods for evaluating rational expectations models that have been developed as alternatives to the classical statistical approach of testing overidentifying restrictions these methods have become very popular and widely used in empirical research we provide an illustration using danish stock market data and we summarize the many results obtained recently using these measures in areas as diverse as stock prices the term structure of interest rates exchange rates consumption and saving the balance of payments tax smoothing hyperinflation and linear quadratic adjustment cost models for inventories labour demand and money demand

can agents learn to rational expectations some results on convergence and stability of learning in the uk stock market rational expectations are frequently justified as the point of convergence of agents learning process when agents learning feeds back on the actual law of motion of the economy convergence of their rule to a rational expectations equilibrium ree is not guaranteed however applying new methods to analyze the convergence of learning in a model of u k stock prices we find evidence that agents could not have learned to form rational expectations if they had attempted to estimate the long run dynamics of the model if however agents have strong priors and impose a unit root on the model thus confining their learning to the short run dynamics there is evidence that recursive learning may eventually lead them to a ree the learning process on the path to this equilibrium is highly volatile suggesting that learning may help to explain excess volatility in u k stock prices copyright 1994 by royal economic society

did investment become green in china evidence from a sectoral panel analysis from 2003 to 2012 under conditions of policy incentives and energy transition an investment is considered to become green if greater investment would support a reduction in the proportion of total energy consumption involving coal use however few empirical studies have attempted to investigate green investment in china at the sector level using panel data for 5 sectors in china between 2003 and 2012 we tested the relationships between investment and different factors including carbon dioxide co2 emission reduction policies and energy structure by building panel models for the national sample the results demonstrated that investment did not become green and mainly relied on gross domestic product gdp during the 2003 2012 period in china although investments in the industry sector and the commerce and services sector were weakened by the co2 emission regulations chinese climate policies had no effect on investment in the agriculture sector or the construction sector and had a positive effect on investment in the transportation sector moreover the proportion of total energy consumption involving coal use had no effect on investment in the construction sector or the commerce and services sector but had a negative effect on investments in the agriculture sector and the transportation sector investment in the industry sector showed strong viscosity to low price coal consumption finally we propose a series of policy implications based on the test results which may guide green investment

the econometrics of the general equilibrium approach to business cycles early in this century american institutionists and members of the german historical school attacked and rightfully so neoclassical economic theory for not being quantitative this deficiency bothered ragnar frisch and motivated him along with irving fisher joseph schumpeter and others to organize the econometric society in 1930 the aim of the society was to foster the development of quantitative economic theory that is the development of what frisch labeled econometrics soon after its inception the society started the journal econometrica frisch was the journal s first editor and served in this capacity for twenty five years

windfall profits in the power sector during phase iii of the eu ets interplay and effects of renewables and carbon prices abstract since power utilities were originally grandfathered into the eu ets by way of a free allocation of carbon emission allowances eua the issue of windfall profits accruing to producers with carbon intensive generation portfolios has been the subject of critical analysis one of the chief aims of the switch to a predominantly auction based allocation system at the onset of phase iii of the eu ets was to negate the incidence of windfall profits the following analysis examines the merits of this policy aim drawing on economic theory of power markets a linear optimisation model covering the electricity market of the eu member states is deployed to investigate this question scenarios reflecting developments over a medium term horizon 10 years are developed with which carbon prices are endogenously determined their effects on the contribution margins of producers in the member states are subsequently evaluated the overall findings indicate that the incidence of windfall profits in the power sector remains prevalent in the overwhelming majority of eu countries the analysis suggests that the carbon intensiveness of the respective generation fleet is not the deciding factor as to whether producers earn windfall profits but rather the fundamental generation structure of the power plant fleet the results raise questions about the capacity of the current eu ets regime to provide the desired decarbonising effect on power producers generation portfolios in european power markets

mean reversion in g 10 nominal exchange rates according to conventional wisdom industrial country floating exchange rates contain unit roots sur tests on panels of monthly group of ten g 10 log nominal rates reject the null of unit roots for various samples over the current float with significance levels from 0 5 to 15 on average in out of sample forecasts mean reversion models beat random walks significantly in some forecast periods for monthly data the range of expected usd dem appreciation rates exceeds 15 per year in the mean reversion model mean reversion places strong restrictions on international models over the sample period the g 10 had to run monetary policies consistent with stable long run nominal rates

measuring business cycles a modern perspective in the first half of this century special attention was given to two features of the business cycle 1 the comovement of many individual economic series and 2 the different behavior of the economy during expansions and contractions both of these attributes were ignored in many subsequent business cycle models which were often linear representations of a single macroeconomic aggregate however recent theoretical and empirical research has revived interest in each attribute separately notably dynamic factor models have been used to obtain a single common factor from a set of macroeconomic variables and nonlinear models have been used to describe the regime switching nature of aggregate output we survey these two strands of research and then provide some suggestive empirical analysis in an effort to unite the two literatures and to assess their usefulness in a statistical characterization of business cycle dynamics

investment risks under uncertain climate change policy abstract this paper describes results from a model of decision making under uncertainty using a real options methodology developed by the international energy agency iea the model represents investment decisions in power generation from the perspective of a private company the investments are subject to uncertain future climate policy which is treated as an external risk factor over which the company has no control the aims of this paper are to i quantify these regulatory risks in order to improve understanding of how policy uncertainty may affect investment behaviour by private companies and ii illustrate the effectiveness of the real options approach as a policy analysis tool the study analysed firms investment options of coal and gas fired power plants and carbon capture and storage ccs technologies policy uncertainty is represented as an exogenous event that creates uncertainty in the carbon price our findings indicate that climate policy uncertainty creates a risk premium for power generation investments in the case of gas and coal fired power generation the risk premium would lead to an increase in electricity prices of 5 10 in order to stimulate investment in the case of ccs the risk premium would increase the carbon price required to stimulate investment by 16 37 compared to a situation of perfect certainty the option to retrofit ccs acts as a hedge against high future carbon prices and could accelerate investment in coal plant this paper concludes that to minimise investment risks in low carbon technologies policy makers should aim to provide some long term regulatory certainty

price determination for a collectible good the case of rare united states coins researchers investigating markets for collectible goods such as paintings 1 2 6 12 antique furniture 7 stradivarius violins 14 wine 8 10 and postage stamps 15 often report rates of return to holding collectibles that are both low 2 6 7 8 12 and volatile 6 7 8 12 baumol 2 argues that the market for paintings of noted deceased artists has no long run equilibrium price because the market is characterized by infrequent trades of unique assets which are available in fixed supply his empirical analysis supports the idea that paintings experience unpredictable price changes and highly dispersed rates of return with a mean near zero in contrast anderson 1 reports estimated equations explaining approximately 60 percent of the variation in log prices of paintings based on the size of painting date of sale and a constructed measure of repute of the artist other researchers have examined markets with more frequent transactions and greater substitutability among the goods traded schnitzel 15 finds that year to year changes in prices of postage stamps are predictable based on age of the stamp and quantity printed ross and zondervan 14 report that variations in quality affect prices but not rates of return of stradivarius violins a result which is consistent with user benefits being invariant with respect to quality among markets for collectibles the market for rare u s coins is active and well organized and faces the potential for increased federal regulation annual sales are estimated at 5 billion 16 two wall street brokerages recently have formed multimillion dollar limited partnerships to invest in rare coins and some coins now are traded on electronic exchanges 5 these innovations have come amid calls for increased regulation to guard against fraudulent grading of coins 5 16 a major determinant of the price of a collectible coin is its grade a measure of condition reflecting qualities such as sharpness of features regulators accuse coin dealers of defrauding collectors of millions of dollars annually by assigning higher than warranted grades to the coins dealers sell while downgrading coins they buy for example the federal trade commission ftc

when the market misleads stock prices firm behavior and industry evolution this paper augments learning and institutional theories of firm behavior with an explicit focus on the idiosyncratic characteristics of learning from financial markets various streams of literature implicitly assume that financial markets influence firm strategies yet the specifics of these interactions are not well specified motivated by a case study of the retail brokerage industry this study proposes three particular characteristics of learning from financial markets first there is vicarious learning from outcomes e g stock valuations yet this has characteristics that are more similar to institutional forms of mimetic isomorphism second the forward looking and complex nature of financial valuations incites a paradoxically simplified type of crude heuristic learning third there is a mutual and simultaneous learning process in that firms learn from financial markets which in turn are themselves in a process of social construction this combination of special characteristics suggests a number of learning pathologies that center around an increasing likelihood compared with other types of learning and adaptation of falling prey to misleading signals a computer simulation based on a model in which cournot duopolists play a multistage game involving investment and cost reduction explores the implications of these characteristics and pathologies in a systematic way

likelihood ratio based tests for markov regime switching markov regime switching models are widely considered in economics and nance although there have been persistent interests see e g hansen 1992 garcia 1998 and cho and white 2007 the asymptotic distributions of likelihood ratio based tests have remained unknown this paper considers such tests and establishes their asymptotic distributions in the context of nonlinear models allowing for multiple switching parameters the analysis simultaneously addresses three di culties i some nuisance parameters are unidenti ed under the null hypothesis ii the null hypothesis yields a local optimum and iii the conditional regime probabilities follow stochastic processes that can only be represented recursively addressing these issues permits substantial power gains in empirically relevant situations besides obtaining the tests asymptotic distributions this paper also obtains four sets of results that can be of independent interest 1 a characterization of conditional regime probabilities and their high order derivatives with respect to the model s parameters 2 a high order approximation to the log likelihood ratio permitting multiple switching parameters 3 a re nement to the asymptotic distribution and 4 a uni ed algorithm for simulating the critical values for models that are linear under the null hypothesis the elements needed for the algorithm can all be computed analytically the above results also shed light on why some bootstrap procedures can be inconsistent and why standard information criteria such as the bayesian information criterion bic can be sensitive to the hypothesis and the model s structure when applied to the us quarterly real gdp growth rates the methods suggest fairly strong evidence favoring the regime switching speci cation consistently over a range of sample periods

endogenous trading volume and momentum in stock return volatility this article examines the ability of volume data to shed light on the source of persistence in stock return volatility a mixture model in which a latent common factor restricts the joint density of volume and returns is used to relax the assumption of exogenous volume used in previous studies we use a point in time signal extraction procedure to identify this latent process and a calibrated simulation to conduct analysis of the viability of the model to explain important properties of the data using daily returns and volume on individual stocks our procedure cannot accommodate serial dependence in squared returns

the reaction of stock returns to news about fundamentals in good times stock prices react negatively to good news and positively to bad news whereas in bad times they react positively to good news and negatively to bad news to account for this stylized fact we consider an asset pricing model where the dividend growth rate switches between different values depending on the underlying state of the economy investors never observe the true dividend growth rate but learn about it through not only its realizations but also external signals such as macroeconomic indicators under plausible assumptions the differing precision of external signals across different states of the economy can change the sign of the market reaction to news from external signals in good and bad times this paper was accepted by brad barber finance

testing the unbiased forward exchange rate hypothesis using a markov switching model and instrumental variables this paper develops a model for the forward and spot exchange rate which allows for the presence of a markov switching risk premium in the forward market and considers the issue of testing the unbiased forward exchange rate ufer hypothesis using us uk data it is shown that the ufer hypothesis cannot be rejected provided that instrumental variables are used to account for within regime correlation between explanatory variables and disturbances in the markov switching model on which the test is based copyright 2005 john wiley sons ltd

the impact of intraday markets on the market value of flexibility decomposing effects on profile and the imbalance costs abstract an increasing share of variable renewable energy sources vres basically affects the electricity price formation in two ways 1 the so called merit order effect tends to lower the base price level and challenges conventional plants to remain profitable 2 due to the variable nature of renewable energy infeed the short term demand for flexibility increases and changes the volatility of electricity prices the more variable prices offer opportunities for controllable electricity producers ceps who provide up and down ramping flexibility to increase their revenues in contrast the vres with high degrees of simultaneity tend to pay for this flexibility in the electricity spot market to reduce their imbalance exposure the intraday market idm for electricity has gained importance for the market value of different technologies lately and continues to expand due to the increasing efforts to balance within day deviation from day ahead schedules this article presents a combination and extension of two existing models to capture the peculiarities of the intraday price formation and to analyze the impact of the idm on the market value of vres and ceps doing so the paper suggests an adjustment of the classical market value factor metric and to go beyond classical day ahead market dam information the article shows that market value factors mvfs can be stabilized if the idm delivers market based price signals for the costs of flexibility that are sufficient to activate flexibilities prior to the usually more expensive imbalance mechanism ibm yet the mvfs from single vre technologies will worsen if their market share is high enough to outweigh forecast errors from other technologies and if they become a permanent price maker in the idm and the ibm

money demand and the effects of fiscal policies this paper reexamines the choice of the scale variable in the money demand function a variety of evidence suggests that consumer spending is a better scale variable than gnp changing the money demand specification along these lines can profoundly affect the standard keynesian analysis of a tax cut copyright 1986 by ohio state university press

option pricing with mean reversion and stochastic volatility many underlying assets of option contracts such as currencies commodities energy temperature and even some stocks exhibit both mean reversion and stochastic volatility this paper investigates the valuation of options when the underlying asset follows a mean reverting lognormal process with stochastic volatility a closed form solution is derived for european options by means of fourier transform the proposed model allows the option pricing formula to capture both the term structure of futures prices and the market implied volatility smile within a unified framework a bivariate trinomial lattice approach is introduced to value path dependent options with the proposed model numerical examples using european options american options and barrier options demonstrate the use of the model and the quality of the numerical scheme

on the fluctuations in consumption and market returns in the presence of labor and human capital an equilibrium analysis abstract we examine the effects of human capital on consumption stock market and other fluctuations in a general equilibrium continuous time model a representative consumer worker investor derives utility from consumption and leisure a representative firm demands labor as the sole input to a stochastic production technology driven by general possibly nonmultiplicative shocks for cobb douglas utility and multiplicative shocks labor is nonstochastic and consumption and stock market volatility are equated as under no human capital deviations from this are analyzed for logarithmic utility and constant elasticity of substitution production technology cases are identified where the presence of labor causes consumption to be smoother than the stock market

cointegration and structural change an application to the u s demand for money wankeun oh i perform the cointegration tests for the trivariate model of real monetary aggregates real personal income and short term interest rate i find the existence of a long run relationship among these three variables to check the stability of a long run money demand relationship i implement a rank constancy test and cusum test the test results show that real mi is relatively more stable than other aggregates but structural change occurred during the 1970s and early 1980s this is consistent with prior research on money demand jel e41 i introduction incorporating structural change when performing tests on the properties of stochastic processes is important because structural breaks may cause misspecification problems most tests of structural change consider the stability of the parameters over time tests for structural breaks and parameter stability have been studied extensively a partial list includes chow 1966 brown et al 1975 harvey and collier 1977 king 1987 ploberger et al 1989 in the context of unit root processes perron 1989 showed that the presence of a one time change in the level or slope of the trend function can severely distort the results of unit root tests and it is natural to ask how structural change can distort the results of cointegration tests 1 traditional tests of parameter stability ask if the parameters of the model are constant in contrast quintos 1993 proposed a test for stability of the long run relationship s in a cointegrating regression the test is based on johansen s 1988 framework and the test statistic is simply the weighted sum of the likelihood ratio test as given in johansen 1988 quintos s rank test is very different from the traditional cusum and chow tests for parameter stability because her rank test checks for stability of the cointegrating relationship between variables in other words the rank test checks whether cointegration holds for the full period the traditional cusum and chow tests assume that cointegration holds for the full period or does not hold for the full period and tests simply whether the cointegration vector changes for example if there is cointegration from 1960 1990 between revenues and expenditures with cointegrating vector 1 1 then the cusum and chow tests check whether the cointegra ting vector 1 1 is stable throughout the period the rank constancy test checks whether the cointegration rank is stable throughout the period not whether the cointegrating vector is stable at 1 1 in other words the rank test will check whether for example there is cointegration from 1960 1980 and no cointegration from 1980 onward the chow and cusum tests are not designed to check for this the structural stability of money demand relationships has been the issue of a substantial number of empirical studies 2 in general structural stability means stability of the underlying behavioral equations 3 this term includes parameter stability and stability of functional form friedman s 1990 research on the money demand function assumes that a long run equilibrium relationship exists between real money balances real income or real wealth and the opportunity cost of holding real money balances recently there has been strong evidence of cointegration between real income real money balances and a nominal interest rate for instance engle and granger 1987 dickey et al 1991 hafer and jansen 1991 hoffman and rasche 1991 mehra 1993 miller 1991 fischer and nicoletti 1993 and baba et al 1992 report on cointegration among variables in u s aggregate money demand jain and moon 1994 report on cointegration in u s sectoral money demand yashiv 1994 and engsted 1993 on money demand in a high inflation country and hoffman et al 1995 report on international money demand comparison this article asks if long run money demand relationship is stable and if so for which measure of money is it stable over time

intrinsic bubbles and regime switching abstract froot and obstfeld 1991 allow for an intrinsic bubble in stock prices using approximately a century of annual data for the us in an attempt to model the widely documented deviations from the prices predicted by present values or fundamentals however they assume that the log of real dividends follows a constant random walk with drift over the whole period we show that this assumption is invalid and that a markov switching model is a more appropriate representation of dividends we then generalise the formulation of stock prices including the intrinsic bubble to allow for this and show that regime switching provides a better explanation for stock prices than the bubble we show that when allowance is made both for the bubble and for regime switching in the dividend process the incremental explanatory contribution of the bubble is low

pattern recognition and procedurally rational expectations abstract this paper introduces a model of pattern recognition for assessing probabilities of future events experimental data from a time series setting indicates that the proposed model gives a better account of subjects expectation formation than the hypothesis of rational expectations parameter estimates suggest that individuals typically modify their behavior only with respect to some patterns while keeping other pattern responses unchanged in the light of new data when the individual data are used to simulate an asset market several features of speculative markets emerge large deviations of the market price from the fundamental price price movements in times without innovation in the fundamentals and large and variable levels of trading activities these regularities are shown to be consistent with pattern induced changes in expectations

nonlinear dynamical model of regime switching between conventions and business cycles abstract we introduce and study a non equilibrium continuous time dynamical model of the price of a single asset traded by a population of heterogeneous interacting agents in the presence of uncertainty and regulatory constraints the model takes into account i the price formation delay between decision and investment by the second order nature of the dynamical equations ii the linear and nonlinear mean reversal or their contrarian in the form of speculative price trading iii market friction iv uncertainty in the fundamental value that controls the amplitude of mispricing v nonlinear speculative momentum effects and vi market regulations that may limit large mispricing drifts we find markets with coexisting equilibrium conventions and business cycles that depend on a the relative strength of value investing versus momentum investing b the level of uncertainty on the fundamental value and c the degree of market regulation the stochastic dynamics is characterized by nonlinear geometric random walk like processes with spontaneous regime shifts between different conventions or business cycles this model provides a natural dynamical framework to model regime shifts between different market phases that may result from the interplay between the effects i vi

long run income and interest elasticities of money demand in the united states econometric techniques designed to accommodate nonstationary data are used to reexamine the stability of interest and income elasticities of money demand in the united states estimates based on postwar monthly data reveal a stable relationship between m1 velocity and various measures of interest rates that proxy the opportunity cost of holding money balances tests for the existence of cointegration and methods used to estimate the income and interest elasticities are based on procedures prescribed by soren johansen 1988 corresponding error correction estimates offer insight as to the dynamics of the process that maintains the equilibrium relation between velocity and interest rates copyright 1991 by mit press

dividend variability and stock market swings this paper examines the extent to which swings in stock prices can be related to variations in the discounted value of expected future dividends when investors face uncertainty about their future behaviour i develop an econometric model that accounts for the instability of u s dividend growth and discount rates during the past 120 years estimates of the model reveal that changing forecasts of future dividend growth account for more than 90 of the predictable variations in dividend prices the estimates also imply that instability in the dividend and discount rate processes contribute significantly to the predictability of long horizon stock returns

consumption asset pricing with stable shocks exploring a solution and its implications for mean equity returns abstract we study the consumption based asset pricing model due to lucas econometrica 46 1978 1429 the exogenous endowment sequence is modeled as a linear stochastic process driven by stable shocks in an otherwise standard framework the gaussian process emerges as a special case we derive exact analytical solutions for asset prices and returns and provide conditions under which these exist we also study the ability of the model to generate realistic values of observed mean rates of return

testing the term structure of interest rates using a stationary vector autoregression with regime switching abstract the expectations model of the term structure for us data on three and six month treasury bills for the period 1962 1 1987 3 is explored the analysis allows for the nonstationarity of the data and for unobserved stochastic switches of regime by estimating vars in the yield spread and the change in the three month rate which allow the time series processes to change between regimes in contrast to other results for the expectations model such as those of hamilton 1988 mankiw and miron 1986 and others we find that the data do not reject the model

acquisition of costly information an experimental study abstract i study decision making in a situation where subjects can buy information in order to uncover the initially unknown deterministic structure the majority of subjects fail to find the most economical way of choosing between two possible prospects many subjects underestimate the value of information and as a result make avoidable forecasting errors other subjects learn correctly which action is most successful under any given condition but fail to implement this knowledge efficiently they either accept errors for the sake of economizing on small amounts of information costs or they invest in redundant information the measured losses are substantial however in certain settings the fact that half of the economist subjects and one fourth of non economist subjects learn to behave optimally may be sufficient for efficient market functioning the present findings thus help to explain the near competitive outcomes observed in many experimental and actual markets

information quality and stock returns revisited this paper investigates the relation between information on the state of the economy and equity risk premium we use a setup where investors have epstein zin preferences and the economy randomly switches between booms and recessions we are able to establish 2 key results first investors with high elasticity of intertemporal substitution eis will require lower excess returns for holding stocks if they are provided with better information on the state of the economy second we find that this also holds for investors with moderate eis if they are sufficiently risk averse

market expectations in the uk before and after the erm crisis the british pound left the erm on 16 september 1992 after a period of turbulence uk monetary policy soon shifted to lower short interest rates and an inflation target was announced this paper uses daily option prices to estimate how the market s probability distribution of the future marks pound exchange rate and uk and german interest rates changed over the summer and autumn of 1992 the results show among other things how various policy decisions affected the market s assessment of the probabilities of realignments and lending rate cuts

the interaction between nonexpected utility and asymmetric market fundamentals this paper studies a nonexpected utility general equilibrium asset pricing model in which market fundamentals follow a bivariate markov switching process the results show that nonexpected utility is capable of exactly matching the means of the risk free rate and the risk premium asymmetric market fundamentals are capable of generating a negative sample correlation between the risk free rate and the risk premium moreover an equilibrium asset pricing model endowed with asymmetric market fundamentals is consistent with all five first and second moments of the risk free rate and the risk premium in the u s data in their seminal work mehra and prescott 1985 argue that the observed historical average for the equity risk premium is too large and the average risk free rate is too small to be rationalized by a complete and frictionless asset pricing model the result of mehra and prescott which is known as the equity premium puzzle has triggered a great deal of research much of this research has attempted to resolve the puzzle by relaxing the assumptions of their analysis the agent has von neumann morgenstern time additive expected utility the return to the stock market is approximately equal to the return on the market portfolio and the consumption growth rate follows a symmetric markov chain one branch of research focuses on nonexpected utility functions of the kreps and porteus 1978 1979 type as a means of resolving the puzzle it is well known that von neumann morgenstern time additive expected utility has an intrinsic restriction that the reciprocal of the coefficient of relative risk aversion equals the elasticity of intertemporal substitution kreps and porteus establish a nonexpected utility framework which is capable of distinguishing the coefficient of relative risk aversion from the elasticity of intertemporal substitution however kocherlakota 1990a and weil 1989 demonstrate that relaxing the restriction between the coefficient of relative risk aversion and the elasticity of intertemporal substitution is not capable of resolving the puzzle

exact solutions for expected rates of return under markov regime switching implications for the equity premium puzzle this paper derives simple closed form solutions for expected rates of return on stocks and riskless one period bills under the assumption that shocks to the growth rates of consumption and dividends are generated by a markov regime switching process these closed form solutions are used to show that the markov regime switching process exacerbates the equity premium puzzle and the risk free rate puzzle three empirical examples illustrate the magnitude of the effects of markov regime switching on equilibrium expected returns this abstract was borrowed from another version of this item

the risk premium and long run global imbalances this study proposes that heterogeneous household portfolio choices within a country and across countries offer an explanation for global imbalances we construct a stochastic growth multi country model in which heterogeneous agents face the following restrictions on asset trade first the degree of us equity market participation is higher than that of the rest of the world second a fraction of households in each country maintains a fixed share of equity in its portfolios in our calibrated model which matches the us net foreign asset position and the equity premium the average us household loads up more aggregate risk than the average foreign household by investing in risky assets abroad and issuing risk free assets as a result the us is compensated by a high risk premium and runs trade deficits even as a debtor country the long run average trade deficit in our model accounts for 50 of the observed us trade deficit

risk aversion and co2 regulatory uncertainty in power generation investment policy and modeling implications abstract we consider a simulation of risk averse producers when making investment decisions in a competitive energy market who face uncertainty about future regulation of carbon dioxide emissions investments are made under regulatory uncertainty then the regulatory state is revealed and producers realize returns we consider anticipated taxes grandfathered permits and auctioned permits and show that some anticipated policies increase investment in the relatively dirty technology beliefs about the policy instrument that will be used to price carbon may be as important as certainty that carbon will be priced more generally a failure to consider risk aversion may bias policy analysis for the power sector

a model of carbon price interactions with macroeconomic and energy dynamics abstract this paper develops a model of carbon pricing by considering two fundamental drivers of european union allowances economic activity and energy prices on the one hand economic activity is proxied by aggregated industrial production in the eu 27 as it provides the best performance in a preliminary forecasting exercise vs other indicators on the other hand brent natural gas and coal prices are selected as being the main carbon price drivers as highlighted by previous literature the interactions between the macroeconomic and energy spheres are captured in a markov switching var model with two states that is able to reproduce the boom bust business cycle hamilton 1989 first industrial production is found to impact positively negatively the carbon market during periods of economic expansion recession thereby confirming the existence of a link between the macroeconomy and the price of carbon second the brent price is confirmed to be the leader in price formation among energy markets bachmeier and griffin 2006 as it impacts other variables through the structure of the markov switching model taken together these results uncover new interactions between the recently created eu emissions market and the pre existing macroeconomic energy environment

sectoral money demand and the great disinflation in the united states estimates of the welfare costs of inflation based on bailey 1956 are typically computed using aggregate money demand models yet the behavior of money demand may vary across sectors thus the impact on welfare of inflation regime shifts may differ between households and firms we specifically investigate the sectoral welfare implications of the shift from the great inflation to the present regime of low and stable inflation for this purpose we estimate different functional specifications of money demand for u s households and nonfinancial firms using flow of fund data covering four decades we find that the benefits were significant for both sectors

switching equilibria the present value model for stock prices revisited abstract this paper analyzes the dynamic features displayed by alternative rational expectations equilibria in the context of the present value model for stock prices with feedback in particular it shows that there exists a unique equilibrium implying cointegration and that equilibrium is characterized by either the fundamental or alternatively the backward solution depending on the size of the feedback parameter it is shown analytically that the existence of switching equilibria induces large stock market swings using us data and structural estimation the hypotheses of feedback and switching equilibria are tested the empirical results provide evidence of both switching equilibria and feedback

an exploration of the effects of pessimism and doubt on asset returns the subjective distribution of growth rates of aggregate consumption is characterized by pessimism if it is first order stochastically dominated by the objective distribution uniform pessimism is a leftward translation of the objective distribution of the logarithm of the growth rate the subjective distribution is characterized by doubt if it is mean preserving spread of the objective distribution pessimism and doubt both reduce the riskfree rate and thus can help resolve the riskfree rate puzzle uniform pessimism and doubt both increase the average equity premium and thus can help resolve the equity premium puzzle

a ten year rule to guide the allocation of eu emission allowances abstract member states in the european union eu are responsible for national allocation plans governing the initial distribution of emission allowances in the co2 emission trading system including rules governing allocations to installations that close and to new entrants the european commission has provided guidelines to discourage the use of allocation methodologies that provide incentives affecting firms compliance behavior for example by rewarding one type of compliance investment over another we find that the treatment of closures and new entrants by member states is inconsistent with the general guidelines provided by the eu we propose stronger eu guidance regarding closures and new entrants a more precise compensation criterion on which to justify free allocations and a ten year rule as a component of future eu policy that can guide a transition from current practice to an approach that places greater weight on efficiency

developments in non expected utility theory the hunt for a descriptive theory of choice under risk this article reviews recent developments in the economic theory of individual decision making under risk since the 1950s it has been known that individual choices violate the standard model of expected utility in predictable ways considerable research effort has now been devoted to the project of developing a superior descriptive model following an overview of non expected utility theories which distinguishes between conventional and non conventional approaches the paper seeks to assess these alternative models in terms of empirical success using laboratory and field data and theoretical usefulness the closing sections reflect on some new directions emerging in this literature

rents in the european power sector due to carbon trading abstract the european union emissions trading scheme eu ets has imposed a price on the allowances for co2 emissions of electricity companies integrating this allowance price into the price of electricity earns a rent for companies who have received these allowances for free during phase i 2005 2007 rents corresponding to the aggregate value of allocated allowances amounted to roughly 13 billion per year however due to the specific price setting mechanism in electricity markets true rents were considerably higher this is due to the fact that companies also that have not received any allowances gain additional infra marginal rents to the extent that their variable costs are below the new market price after inclusion of the allowance price producers with low carbon emissions and low marginal costs thus also benefit substantially from carbon pricing this paper develops a methodology to determine the specific interaction of the imposition of such a co2 constraint and the price setting mechanism in the electricity sector under the assumption of marginal cost pricing in a liberalized european electricity market the article thus provides an empirical estimate of the true total rents of power producers during phase i of the eu ets 2005 2007 the eu ets generated in phase i additional rents in excess of 19 billion per year for electricity producers these transfers are distributed very unevenly between different electricity producers in a second step the paper assesses the impact of switching from free allocation to an auctioning of allowances in 2013 we show that such a switch to auctioning will continue to create additional infra marginal rents for certain producers and will leave the electricity sector as a whole better off than before the introduction of the eu ets

first evidence of asymmetric cost pass through of eu emissions allowances examining wholesale electricity prices in germany abstract we test the hypothesis that rising prices of emission allowances have a stronger impact on wholesale electricity prices than falling prices asymmetric cost pass through using an autoregressive distributed lag model we confirm this hypothesis for the german market

free euas and fuel switching abstract this paper focuses on the impact of euas on the optimal policy of a competitive electricity producer the effect of grandfathering is consistently shown to introduce significant distortions to the system it is theoretically shown that there is a threshold value of carbon price so that for prices above this the eua becomes an incentive for reduced production rather than a penalty for inefficient producers these theoretical results are supported by the data of one producer from italy and one from germany furthermore the empirical evidence concludes that the high level of free allowances may generate a shift in production from less to more polluting technologies

volatility momentum and time varying skewness in foreign exchange returns this article tests a stochastic volatility model of exchange rates that links both the level of volatility and its instantaneous covariance with returns to pathwise properties of the currency in particular the model implies that the return volatility covariance behaves like a weighted average of recent returns and hence switches signs according to the direction of trends in the data this implies that the skewness of the finite horizon return distribution likewise switches sign leading to time varying implied volatility smiles in options prices the model is fit and assessed using bayesian techniques some previously reported volatility results are accounted for by the fitted models the predicted pattern of skewness dynamics accords well with that found in historical options prices

mean reversion in equilibrium asset prices this paper demonstrates that negative serial correlation in long horizon stock returns is consistent with an equilibrium model of asset pricing when investors display only a moderate desire to smooth their consumption commonly used measures of mean reversion in stock prices calculated from historical returns data nearly always lie within a 60 percent confidence interval of the median of the monte carlo distributions implied by the authors equilibrium model from this evidence the authors conclude that the degree of serial correlation in the data could plausibly have been generated by their model copyright 1990 by american economic association

real risk inflation risk and the term structure i present a model for the term structures of nominal and real interest rates in the uk that incorporates markov switching and allows for non neutralities nonlinear dynamics and flexibility in the dynamics of the risk premia the model is used to assess how accurately the term structure reflects changing expectations of future yields and inflation i find that variations in inflation expected over the next two to three years are very accurately reflected by current yields over longer horizons the term structures closely track changing expectations regarding future nominal and real yields but not future inflation

efficient gradualism in intertemporal portfolios abstract this paper examines intertemporal portfolio plans under autocorrelation in asset returns and considers whether these plans conform to the common advice that risky assets be bought gradually and then held in decreasing amounts as the investment horizon approaches given elliptical returns optimal portfolio plans with precommitment must be mean variance efficient then for arma 1 1 parameterizations with negative autocorrelation the age effect gradual diminishing of risky holdings as the horizon approaches is confirmed as is dollar cost averaging gradual entry into the risky asset for sufficiently distant horizons for a numerically analyzed alternative bivariate returns process only the age effect is confirmed

the demand for money in the united states evidence from cointegration tests this paper uses recent cointegration test procedures to investigate the underlying economic relationship between real money balances real income and interest rates for the united states unlike recent studies of money demand the authors analysis uses quarterly data spanning the period 1915 88 thus providing a sample encompassing a wide variety of economic experiences the evidence presented indicates that the broader m2 measure of money is the preferable measure with which to consider the long run effects of monetary policy copyright 1991 by ohio state university press

sectoral money demand a co integration approach the major emphasis in previous money demand studies has been at the aggregate level with little systematic attention paid to sectoral differences in money holding behavior this paper attempts to address the latter issue by focusing on more homogeneous subgroups to gauge money holding patterns we apply cointegration theory to identify long run money demand functions for the household and business sectors of the u s economy in general our results which are based on the 1960 1990 u s monetary experience suggest substantial sectoral divergences in long run relationships in particular the household sector reveals more stable relationships the business sector indicates strong interest elasticities which are found to be negligible for the household case these findings are invariant to alternative money definitions and for different sample periods copyright 1994 by mit press

ratings migration and the business cycle with application to credit portfolio stress testing the turmoil in the capital markets in 1997 and 1998 has highlighted the need for systematic stress testing of banks portfolios including both their trading and lending books we propose that underlying macroeconomic volatility is a key part of a useful conceptual framework for stress testing credit portfolios and that credit migration matrices provide the specific linkages between underlying macroeconomic conditions and asset quality credit migration matrices which characterize the expected changes in credit quality of obligors are cardinal inputs to many applications including portfolio risk assessment modeling the term structure of credit risk premia and pricing of credit derivatives they are also an integral part of many of the credit portfolio models used by financial institutions by separating the economy into two states or regimes expansion and contraction and conditioning the migration matrix on these states we show that the loss distribution of credit portfolios can differ greatly as can the concomitant level of economic capital to be assigned

emissions trading and investment decisions in the power sector a case study in finland abstract organizations which consider investment in or divestment of power production licences capacity within the european community are exposed to the impacts of the european union emission allowance trading scheme eu ets in this paper the consequences of the eu ets on investment decisions are explored in a country specific setting in finland first we review the general mechanisms through which the eu ets influences size timing and cashflows of an investment next we discuss the projected changes in finnish power producers investment environment and examine the financial impacts due to the eu ets on a case investment decision a hypothetical condensing power plant 250 mwe the standard discounted cash flow dcf analysis is extended to take into account the value of two real options the option to wait and the option to alter operating scale in a quantitative investment appraisal the impact of emissions trading not only depends on the expected level of allowance prices but also on their volatility and correlation with electricity and fuel prices the case study shows that the uncertainty regarding the allocation of emission allowances is critical in a quantitative investment appraisal of fossil fuel fired power plants

robust measures of skewness and kurtosis for macroeconomic and financial time series abstractthe sample skewness and kurtosis of macroeconomic and financial time series are routinely scrutinized in the early stages of model building and are often the central topic of studies in eco

how emission certificate allocations distort fossil investments the german example despite political activities to foster a low carbon energy transition germany currently sees a considerable number of new coal power plants being added to its power mix there are several possible drivers for this dash for coal but it is widely accepted that windfall profits gained through free allocation of ets certificates play an important role yet the quantification of allocation related investment distortions has been limited to back of the envelope calculations and stylized models so far we close this gap with a numerical model integrating both germany s particular allocation rules and its specific power generation structure we find that technology specific new entrant provisions have substantially increased incentives to invest in hard coal plants red to natural gas at the time of the ets onset more precisely disproportionate windfall profits compared more than half the total capital costs of a hard coal plant moreover shorter periods of free allocations would not have turned investors favours towards the cleaner natural gas technology because of pre existing economic advantages for coal in contrast full auctioning of permits or a single best available technology benchmark would have made natural gas the predominant technology of choice

educational attainment and the changing u s wage structure dynamic implications on young individuals choices we present a dynamic model of individuals educational investments that allows us to explore alternative modeling strategies for forecasting future wage distributions the key innovation we propose is an approach to forecasting that relies only on the information that would be available at the actual time decisions are made and which incorporates the role of parameter uncertainty into the decision making process we compare the performance of our method with alternative models of forecasting behavior based on cps data over the period 1964 2004