preferred risk habitat of individual investors abstract the preferred risk habitat hypothesis introduced here is that individual investors select stocks whose volatilities are commensurate with their risk aversion the data 1995 2000 holdings of over 20 000 clients at a large german broker are consistent with the predictions of the hypothesis the returns of stocks within each portfolio have remarkably similar volatilities when stocks are sold they are replaced by stocks of similar volatilities and the more risk averse customers indeed hold less volatile stocks greater volatility specialization is associated with lower sharpe ratios primarily because more specialized investors hold fewer stocks and thereby expose themselves to more unsystematic risk

empirical evaluation of the asset allocation puzzle abstract we examine the portfolio choice puzzle posed by canner mankiw and weil canner n mankiw n g weil d n 1997 an asset allocation puzzle the american economic review 87 181 191 from data on the portfolio composition of 470 clients of a brokerage firm we obtain that the bonds stocks ratio does decrease in relation to risk tolerance this result complements the findings of cmw 1997 by focusing on actual allocations of individual portfolios rather than recommended allocations by financial advisors

reward structures in a planned economy some difficulties there is an extensive literature on the socially optimal pricing policy for public firms but much less attention has been paid to the vital question of how managers of public firms can be induced to follow such policies the politicians or planners who seek to control a public enterprise will be less well informed about cost and demand functions than the manager and there is no reason to suppose that managers are altruists thus with asymmetrical information and selfish managers there is a significant control problem recently tam 1981 has suggested an ingenious iterative incentive mechanism designed to surmount this problem this note a argues that her negative price incentive scheme npis will not achieve its objective of guiding managers to price at marginal cost2 and b compares npis with variants of the performance index pi proposed by scott 1952 1978 and finsinger and vogelsang 1980a 1981 tam s proposal is that the manager of a public firm be paid a bonus b each period

an asset allocation puzzle comment should the proportion of risky assets in the risky part of an investor s portfolio depend on the investor s risk aversion according to basic financial theory in particular the mutual fund separation theorem with a riskless asset the answer is no the theorem states that rational investors should divide their assets between a riskless asset and a risky mutual fund the composition of which is the same for all investors risk aversion affects only the allocation between the riskless asset and the fund however niko canner et al 1997 cmw hereafter observed that popular investment advice does not conform to this theory they reported the stocks bonds and cash allocations recommended by four advisors for conservative moderate and aggressive investors as shown in table 1 which is reproduced from cmw the advisors recommend a bond stock ratio that varies directly with risk aversion for example fidelity recommends a bond stock ratio of 1 50 for a conservative more riskaverse investor a ratio of 1 00 for a moderate less risk averse investor and a ratio of 0 46 for an aggressive still less risk averse investor the inconsistency between such advice and the separation theorem is called an asset allocation puzzle by cmw they attempted to solve the puzzle by relaxing key assumptions in the theory but finally reached a negative conclusion although we cannot rule out the possibility that popular advice is consistent with some model of rational behavior we have so far been unable to find such a model p 181 however they suggested that consideration of intertemporal trading might help resolve the puzzle in the present paper we provide theoretical support for the popular advice the two key insights are that the investor s horizon may exceed the maturity of the cash asset and that the investor rebalances the portfolio as time passes if the investor s horizon exceeds the maturity of cash which might be a money market security with maturity of one to six months then cash is not the riskless asset as is commonly assumed in the basic theory in a theory allowing portfolio rebalancing as opposed to a buy and hold framework it is not unreasonable to assume that the investor can synthesize a riskless asset a zero coupon bond maturing at the horizon using a bond fund and cash then bonds will be both in the synthetic riskless asset and in the risky mutual fund and we show that in this case the theoretical bond stock ratio varies directly with risk aversion for any hyperbolic absolute risk aversion hara investor as an example of the type of results that a specific model can produce we provide a continuous time model with closed form solutions which produces theoretical bond stock ratios similar to the popular advice the present paper is organized as follows in the next section we analyze the popular advice in terms of the theory of mutual fund separation of david cass and joseph e stiglitz 1970 we show that this theory is relevant both in static and dynamic frameworks and use it to analyze the popular advice in complete and incomplete markets in section ii we analyze the popular advice in the context of robert c merton s 1971 continuous time statement of mutualfund separation and present an illustrative model in which a crra investor makes continuous time portfolio decisions under interest rate and stock price uncertainty in section iii numerical results are compared with the popular advice section iv is a conclusion bajeux besnainou department of finance school of business and public management george washington university 2023 g street nw washington dc 20052 jordan national economic research associates 1255 23rd street nw washington dc 20037 portait cnam and essec finance chair cnam 2 rue conte paris france this research was supported by a grant from the institute for quantitative investment research we thank two anonymous referees for their comments 1 hara functions include quadratic utility which is one way of justifying mean variance preferences and constant relative risk aversion crra utility both quadratic and crra utility were considered in the cmw analysis

an asset allocation puzzle comment the purpose of this note is to look at the rationale behind popular advice on portfolio allocation among cash bonds and stocks we argue that the typical investment advice is not inconsistent with the behavior of risk averse expected utility maximizers we propose an additional solution to the asset allocation puzzle posed by niko canner et al 1997 who argue that popular advice contradicts financial theory because it is inconsistent with the capital asset pricing model capm mutual fund separation theorem the capm asserts that investors should hold the same selection of risky assets while popular advice is that investors should hold a proportion of bonds to stocks that increases with risk aversion using mean variance mv analysis and the capm canner et al show that recommended portfolios are far from optimal and that losses from the apparent failure of optimization are not substantial however they failed to explain the popular advice within an economic model we offer a rational model based on stochastic dominance to demonstrate that all popular financial advice portfolios belong to the efficient set for all risk averse investors using the historical annual real returns on bonds and stocks in canner et al we cannot ascertain that investment advisors indeed offer bad advice rather we maintain that acting as agents for numerous clients advisors recommend portfolios that are not inefficient for all risk averse investors i overview

bond ladders and optimal portfolios we analyze complex bond portfolios within the framework of a dynamic general equilibrium asset pricing model equilibrium bond portfolios are nonsensical and imply a trading volume that vastly exceeds observed trading volume on financial markets instead portfolios that combine bond ladders with a market portfolio of equity assets are nearly optimal investment strategies the welfare loss of these simple investment strategies when compared to the equilibrium portfolio converges to zero as the length of the bond ladder increases this article therefore provides a rationale for naming bond ladders as a popular bond investment strategy

per customer quantity limit and price discrimination evidence from the u s residential mortgage market abstract theoretically if firms face a regulatory per customer quantity limit they should have an incentive to discriminatively charge high demand customers higher prices and make them just willing to buy a quantity equal to the limit in the u s residential mortgage industry mortgages with origination balances above the conforming loan limits cannot be guaranteed by government sponsored enterprises which make lenders face a per customer quantity limit this paper finds that borrowers bunching at the limit pay higher interest rates due to price discrimination this study rules out the alternative explanation that those borrowers are of higher risk lending cost than other borrowers

multiple market contact between savings and loans note when firms diversify into new product or geographic markets via entry or merger they may encounter firms with whom they are already competing an important question for study is whether multiple market contact between firms affects their behavior although most traditional theory assumes that behavior of firms in a market is determined by factors in that market alone edwards 1955 advanced the mutual forbearance or linked oligopoly hypothesis starting from the premise that dominant firms in a market are likely to meet one another in other markets edwards hypothesized that a multimarket firm may not take aggressive actions against a competitor in one market if it fears retaliatory actions by that competitor in another market the crux of the hypothesis is that as the number of contact points between dominant firms of a given market increases the less competitive that market will be regardless of the market s level of concentration although edwards suggested that multimarket contact might reduce competition others including solomon 1970 who studied geographic banking markets and scott 1982 who investigated the diversification of manufacturing firms across different lines of business recognized that contact might increase competition neither edwards solomon nor scott presented a formal model however game theoretic models have been constructed that can be used to study the effects of diversification investigators of the chain store paradox e g kreps and wilson 1982 have shown that in a very simple environment rational strategies in one market cannot be influenced by behavior in a second indepen

optimal portfolio choice for long horizon investors with nontradable labor income this paper examines how risky labor income and retirement affect optimal portfolio choice with idiosyncratic labor income risk the optimal allocation to stocks is unambiguously larger for employed investors than for retired investors consistent with the typical recommendations of investment advisors increasing idiosyncratic labor income risk raises investors willingness to save and reduces their stock portfolio allocation towards the level of retired investors positive correlation between labor income and stock returns has a further negative effect and can actually reduce stockholdings below the level of retired investors financial advisors typically recommend that their customers invest more in stocks than in safe assets when they are working and to shift their investments towards safe assets when they retire jagannathan and kocherlakota 1996 malkiel 1996 by contrast the standard academic models of portfolio choice merton 1969 1971 samuelson 1969 show that retirement is irrelevant for portfolio decisions if investment opportunities are constant and human capital is tradable in this case the fraction of wealth optimally invested in risky assets should be constant over the lifetime of an individual recent research building on the pioneering work by merton 1971 shows that time varying investment opportunities result in portfolio rules with an intertemporal hedging component whose magnitude depends on the investment horizon of the investor kim and omberg 1996 balduzzi and lynch 1997 brennan schwartz and lagnado 1997 brandt 1999 campbell and viceira 1999 2001 barberis 2000 with time variation in investment opportunities retirement and death play an instrumental role as events that exogenously fix the individual s investment horizon more importantly retirement also marks the time at which individuals stop working and thereafter must live off their lifetime savings and possibly transfers from this perspective retirement matters for portfolio choice

outstanding debt and the household portfolio this article examines the effect of household debt on investment decisions we alter a simple portfolio choice model to allow households to retire outstanding debt and realize a risk free rate of return equal to the interest rate on that debt using the survey of consumer finances we find that households with mortgage debt are 10 less likely to own stocks and 37 less likely to own bonds compared to similar households with no mortgage debt we calculate the costs of nonoptimal investment in the presence of various forms of household debt we find that 26 of households should forgo equity market participation on account of the high interest rates they pay on their debt 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

who should buy long term bonds according to conventional wisdom long term bonds are appropriate for conservative long term investors this paper develops a model of optimal consumption and portfolio choice for infinite lived investors with recursive utility who face stochastic interest rates solves the model using an approximate analytical method and evaluates conventional wisdom as risk aversion increases the myopic component of risky asset demand disappears but the intertemporal hedging component does not conservative investors hold assets to hedge the risk that real interest rates will decline long term inflation indexed bonds are most suitable for this purpose but nominal bonds may also be used if inflation risk is low

bank commercial loan markets and the role of market structure evidence from surveys of commercial lending abstract this paper seeks to test two tenets that underlie the current practice of antitrust analysis in banking the first is the view that bank commercial loan markets are local in nature and the second is the view that banks in more concentrated markets are more likely to engage in some form of noncompetitive behavior tests of both of these tenets are conducted using an extensive set of loan specific survey information not previously employed to address these issues results consistent with the existence of local banking markets and the dominance of competitive differences as an explanation for observed differences in loan rates are found

dynamic branching and interest rate competition of commercial banks evidence from hungary abstract i supplement previous models of bank competition by incorporating the endogenous branching choices of commercial banks i apply a dynamic structural model of banks branching and interest rate choices to a unique bank level dataset on hungarian commercial banks during 2004 2007 i find that banks charge a premium in interest rates for relative branch network dominance and banks with relatively smaller networks are less likely to close branches i present significant and robust estimates of branch setup costs and scrap values and discuss the potential use of branching restrictions as regulatory tools to alter lending rates and consumer surplus

the asset allocation decision and investor heterogeneity a puzzle abstract this paper examines portfolio allocation decisions for a large sample of demographically diverse survey respondents in light of finance theory and the recommendations of financial advisors we investigate whether asset allocation decisions vary for respondents who differ across several dimensions including gender home ownership age net worth and psychological orientation sample respondents decisions are consistent with popular advice and finance theory we find that only age affects the mix of risky securities when we consider the allocation of total portfolio assets to equity all individual characteristics except age matter psychological orientation contributes to our ability to explain asset allocation decisions

regulation by price adjustment the regulatory price adjustment process originally proposed by vogelsang and finsinger has been shown to be vulnerable to strategic manipulation by the regulated firm this article proposes several modifications to that scheme which improve its performance and broaden its applicability inclusion of a monopoly franchise market and the firm s past prices and earnings in the price adjustment constraints are shown to ensure efficient production by the firm and convergence to ramsey prices regardless of the firm s cost structure

estimated inflation rate consumption and portfolio decision abstract when the expected inflation rate could not be completely observed by investors we show two main results 1 both portfolio weights on financial assets and real consumption would be affected by the estimation error of unobservable inflation rate 2 if there is only nominal instantaneously risk free asset in the financial market the change of nominal price would affect the optimal real consumptions plan

evolutionary portfolio selection with liquidity shocks insurance companies invest their wealth in financial markets the wealth evolution strongly depends on the success of their investment strategies but also on liquidity shocks which occur during unfavourable years when indemnities to be paid to the clients exceed collected premia an investment strategy that does not take liquidity shocks into account exposes insurance companies to the risk of bankruptcy when liquidity shocks and low investment payoffs jointly appear therefore regulatory authorities impose solvency restrictions to ensure that insurance companies are able to face their obligations with high probability this paper analyses the behaviour of insurance companies in an evolutionary framework we show that an insurance company that merely satisfies regulatory constraints will eventually vanish from the market we give a more restrictive no bankruptcy condition for the investment strategies and we characterize trading strategies that are evolutionary stable i e able to drive out any mutation

the rationality of asset allocation recommendations the popular finance literature describes the asset allocation decision as one of the most important factors in determining investment performance this article reviews the implications of modern portfolio theory for the asset allocation decision and then examinesthe recommendations of some leading financial experts to see if they are consistent with theory

a portrait of the individual investor abstract behavioral finance models often rely on a concept of noise traders who are prone to judgment and decision making errors what do noise traders do we review prior research and present new survey evidence on the behavior of small individual investors who manage their own equity portfolios many people 1 discover naive patterns in past price movements 2 share popular models of value 3 are not properly diversified and 4 trade in suboptimal ways

the regulation of multiproduct firms part i theory abstract this paper develops a normative model of the regulation of a multiproduct firm with private information about its technology and cost reducing activity it first characterizes the optimal regulatory scheme and illustrates it through examples it then derives necessary and sufficient conditions for the pricing incentive dichotomy to hold i e conditions under which the cost reimbursement rule but not pricing is used to provide incentives last the paper studies the regulation of the multiproduct firm in a general equilibrium framework both to assess the validity of the partial equilibrium approach and to formalize the notion of taxation by regulation

a model of housing in the presence of adjustment costs a structural interpretation of habit persistence building on the model of sanford j grossman and guy laroque 1990 this paper provides a model of household consumption and portfolio allocation which incorporates the role of housing as both a consumption good and as a component of wealth the model captures the following features of the household s problem a utility depends probably nonseparably on two distinct goods nondurable consumption and housing b nondurable consumption can be adjusted cost lessly but housing is subject to an adjustment cost c households face housing price risk in the sense that the relative price of housing varies over time and d in addition to the house the household can invest in a wide variety of financial assets this single reasonably tractable model generates testable implications for portfolio allocation risk aversion asset pricing and the dynamics of nondurable consumption because the original grossman and laroque model considers a utility function in which the durable good is the sole argument and thus abstracts completely from nondurable consump tion their analysis cannot address either the potential spillover effects of the adjustment costs of the durable good on the dynamics of nondurable consumption or the implications for portfolio allocation of housing risk arising from variation in the relative price of housing in addition to generating implications for issues on which the original grossman and laroque model was silent the housing model delivers a strikingly different message concerning asset pricing that is in contrast to the grossman and laroque result that the consumption based capital asset pricing model consumption capm fails the housing model implies that the consumptioncapm holds we assume that the household incurs an adjustment cost when altering the holding of the dura ble good or house although financial assets can be bought and sold costlessly consumption of the nondurable good can also be adjusted costlessly when choosing a new house the consumer takes into account the fact that the consumption of housing services will be constant at the new level until the subsequent stopping time when it is again worthwhile to incur the adjustment cost thus the home purchase decision is endogenous and fully rational but because of the adjustment cost infrequent in this continuous time setting the household s decision process has a recursive structure at each instant the household first decides whether it is optimal to sell the house immediately on those rare occasions that it is optimal to incur the adjustment cost the household sells the old house and buys a new one instantaneously if the household decides that it is not optimal to sell the house immediately it then determines its optimal holdings of financial assets and optimal level of nondurable consumption conditional on the current housing stock in essence because of the adjustment costs associated with the durable good the current

how loss averse are investors in financial markets abstract we investigate loss aversion in financial markets using a typical asset allocation problem our theoretical and empirical results show that investors in financial markets are more loss averse than assumed in the literature moreover loss aversion changes depending on market conditions investors become far more loss averse during bull markets than during bear markets indicating their more profound disutility for losses when others enjoy gains contrary to most previous results we find that investors are more sensitive to changes in losses than changes in gains

naive diversification strategies in defined contribution saving plans there is a worldwide trend toward defined contribution saving plans and growing interest in privatized social security plans in both environments individuals are given some responsibility to make their own asset allocation decisions raising concerns about how well they do at this task this paper investigates one aspect of the task namely diversification it is shown that some investors follow the 1 n strategy they divide their contributions evenly across the funds offered in the plan consistent with this naive notion of diversification it is found that the proportion invested in stocks depends strongly on the proportion of stock funds in the plan

the asset allocation puzzle is still a puzzle abstract intertemporal hedging activity has been advocated as being the solution to the asset allocation puzzle a standing assumption made in the dynamic asset allocation literature is that one or several bonds can perfectly hedge the interest rate risk and related market price of risk in the economy in a multi asset world ceteris paribus such an assumption biases the portfolio allocation of a non myopic investor towards bonds we extend the literature to allow for an incomplete bond market when solving for the optimal portfolio choice of a rational investor it is shown that investors with a high level of risk aversion could invest more in stocks than in bonds

reward structures in a planned economy the problem of incentives and efficient allocation of resources this paper considers a reward mechanism for inducing the choice of a socially optimal level of output by a socialist price setting manager under this mechanism the planner is assumed to have no information other than the observed output and price level it thus has informational advantages over other schemes thus far discussed in the literature the other schemes require the additional knowledge of demand elasticities of all the products produced in the economy besides this informational advantage the reward structure suggested here also eliminates other basic weaknesses of those schemes suggested previously

retrospectives lange and von mises large scale enterprises and the economic case for socialism in the debates over economic calculation launched by ludwig von mises in 1920 and extending well into the 1940s the central issue concerned the ability of a socialist economy to achieve allocative efficiency von mises emphasized that a collectivist state would have great difficulty in gathering and acting on relevant information therefore under socialism even well intentioned bureaucrats would lack a meaningful system of values on which to calculate defenders of socialism such as oskar lange countered that a market socialism could match demand to supply just as well as capitalism and meet the range of static conditions required for pareto optimality that debate is a rich and interesting story that has been told many times before but in all that has been written an important aspect of the original debate has been lost somewhat oddly both the socialists like oskar lange and the advocates of private ownership like von mises and friedrich hayek maintained that they were defending the progressive tendencies of competitive capitalism against the deadening hand of monopoly power this historic paradox deserves consideration if only because it serves to focus attention on our still incomplete theories of large scale enterprises under socialism and capitalism

the regulation of multiproduct firms part ii applications to competitive environments and policy analysis abstract this paper extends our companion paper part i laffont and tirole 1990 on the regulation of the rate of return and prices of a multiproduct firm in two directions first it studies optimal pricing by a regulated firm competing with regulated or unregulated rivals with or without market power or other distorted pricing it then focuses on the access pricing problem and its potential foreclosure effects second it shows how optimal pricing can be decentralized to the regulated firm in the absence of cost and demand information

behavioral portfolio theory we develop a positive behavioral portfolio theory bpt and explore its implications for portfolio construction and security design the optimal portfolios of bpt investors resemble combinations of bonds and lottery tickets consistent with friedman and savage s 1948 observation we compare the bpt efficient frontier with the mean variance efficient frontier and show that in general the two frontiers do not coincide optimal bpt portfolios are also different from optimal capm portfolios in particular the capm twofund separation does not hold in bpt we present bpt in a single mental account version bpt sa and a multiple mental account version bpt ma bpt sa investors integrate their portfolios into a single mental account while bpt ma investors segregate their port folios into several mental accounts bpt ma portfolios resemble layered pyramids where layers are associated with aspirations we explore a two layer portfolio where the low aspiration layer is designed to avoid poverty while the high aspiration layer is designed for a shot at riches

market competition and corporate performance empirical evidence from china listed banks with financial monopoly aspect theorists and policy experts generally believe that the higher degrees of financial monopoly and lower degrees of market competition can result in the higher performance level of companies especial

the behavioral relevance of mental accounting for the pricing of financial options abstract the paper reports an experiment on the pricing of financial options arbitrage free option pricing is tested against three hypotheses based on mental accounting the data show that even with considerable experience unexploited arbitrage opportunities persist subjects do not seem to make the connections between the different investment possibilities as essential for arbitrage free pricing afp instead they act as if they associate the risky assets to the same mental account while the bond is treated separately this corresponds to the construction of a two layer portfolio of a risky and a safe layer in the behavioral portfolio theory of shefrin and statman j fin quant anal 35 2000 127

effort rewarding incentive mechanisms for public enterprise managers abstract management incentive schemes leading to welfare optimal pricing and efficient production of public enterprises have so far been mainly concerned with the information advantages that public enterprise managers hold over their supervising government or central planning agency managers under these schemes are induced to improve their firm s performance in adjustment processes which in the limit lead to optimal firm decisions such managers are supposed to be income maximizers disregarding any personal effort which could influence their performance and utility in this paper i show that two incentive schemes recently proposed by tam 1981 and finsinger and vogelsang 1982 can also help to induce managers to provide an optimal level of effort here effort is assumed to reduce managers utility and the firm s costs the result depends crucially on myopic managerial utility maximization once managers maximize the discounted value of future utility levels they will deviate from the optimal behavior under tam s scheme this can hold independent of the optimal effort level under the finsinger vogelsang performance index managers will always show suboptimal effort levels in a steady state equilibrium because the index only rewards welfare improvements effort however has to be rewarded even with no improvement in behavior an improved performance index which provides cumulative rewards is shown to be strategy proof and lead to a welfare optimum this reward structure basically treats managers as if they were private entrepreneurs it looks extremely generous in that it gives managers the fruits of all costs reductions due to increases in effort suggestions are made to mitigate this income distributional impact

branch banking and the geography of bank pricing we show that bank branching tends to mitigate localized market power by broadening the geographic scope of competition among banks even though branch banking allows banks to differentiate themselves through their choices of branch locations banking services at peripheral locations will be priced more competitively when those locales are served by branch networks we develop a theoretical model in support of this view and offer empirical evidence

an asset allocation puzzle this paper examines popular advice on portfolio allocation among cash bonds and stocks it documents that this advice is inconsistent with the mutual fund separation theorem which states that all investors should hold the same composition of risky assets in contrast to the theorem popular advisors recommend that aggressive investors hold a lower ratio of bonds to stocks than conservative investors the paper explores various possible explanations of this puzzle and finds them unsatisfactory copyright 1997 by american economic association

consolidation and bank branching patterns abstract this paper examines the association between consolidation and changes in levels of bank branching as measured by changes in the number of bank branches per capita using a specially constructed data set we address this issue as well as how this relationship varies with the type of consolidation and initial regulatory competitive and market conditions we find that merges where merging institutions have branch networks which overlap within a zip code within zip merger are strongly associated with a reduction in offices per capita in that zip code this result is robust across time and holds in both rural and urban areas the findings also suggest that contrary to popularly held views consolidation is not unambiguously negatively associated with changes in the number of banking offices per capita neither within market but not within zip mergers nor out of market mergers consistently show such a relationship we also find that the relationships between within zip and within market but not within zip mergers and changes in the number of bank offices per capita are more negative in low income neighborhoods than in other neighborhoods however because most states now have unrestricted branching and because savings associations are less prevalent and financially healthier than in the past these findings may not be indicative of future branching patterns

using cost observation to regulate firms the paper emphasizes the use of accounting data in regulatory or procurement contracts when the supplier 1 has superior information about the cost of the project and 2 invests in cost reduction the main result states that under risk neutrality the supplier announces an expected cost and is given an incentive contract linear in cost overruns this optimal contract moves toward a fixed price contract as the announced cost decreases an investment choice is then introduced and the use of a rate of return regulation is studied

bank net worth and frustrated monetary policy abstract i present a model in which bank net worth determines both loan market competition and monetary transmission to firm borrowing rates in the model banks are local monopolists for borrowers near them when they are flush with equity banks expand their lending compete for customers at the edges of their markets and pass through changes in the monetary policy rate to their loan rates when they lose substantial equity banks consolidate retreat from rivalry and frustrate monetary transmission the model explains why interest rate pass through weakens after financial crises its predictions are consistent with several facts about bank to firm lending

personal investing advice theory and evidence data from a unique survey containing information on the composition of the respondents total asset holdings both inside and outside their retirement accounts shed light on individual asset allocation behavior individual asset allocations are consistent with the recommendations of expert practitioners and with the prescriptions of economic theory the survey respondents maintain in cash and near cash investments a proportion of their wealth that declines as wealth increases they hold these safe assets outside their retirement accounts the proportion of total assets that they hold in equities declines with age and rises with wealth they do not appear to manage their assets across retirement and nonretirement accounts to maximize tax efficiency

a mechanism to induce ramsey pricing for natural monopoly firms this paper considers a model with m independent natural monopoly firms it then proposes a taxation subsidy scheme that the regulator can implement to induce the m price setting firms acting independently to jointly adopt ramsey pricing the scheme has the following desirable features 1 the regulator needs only book keeping data on quantities prices and profits 2 the scheme induces cost minimization behaviour 3 the firms will not behave strategically 4 at each step of the convergence process to optimum each firm earns a non negative return and welfare is improved

monitoring and market power in credit markets abstract whether or not banks are engaged in monitoring of customers information acquisition may have important consequences to the whole economy theory suggests an inverse relation between both average loan interest rates and credit losses and banks investments in monitoring in contrast investments in market power result in a direct relation these predictions are tested using panel data on finnish local banks we find evidence that banks investments in branch network density and human capital personnel contribute more to monitoring than to market power we also find that managing the money transactions of customers enables banks to better control risks in their lending

dynamic asset allocation for stocks bonds and cash closed form solutions for hara optimal portfolios are obtained in a dynamic portfolio optimization model in three assets stocks bonds and cash in a vasicek type model of stochastic interest rates with correlated stock prices the hara is a buy and hold combination of a zero coupon bond with maturity matching the investor s horizon and a crra mutual fund this simple characterization facilitates insights about investor behavior over time and provides explanations on the rational use of convex versus concave investment strategies the model illuminates clearly the role of the different market parameters and relative risk aversion in portfolio strategies

dynamic asset allocation portfolio decomposition formula and applications a new decomposition of the optimal portfolio in dynamic models with von neumann morgenstern preferences and ito prices is established the formula rests on a change of numeraire that uses pure discount bonds as units of account the dynamic hedging demand has two components the first hedge insures against fluctuations in an optimally designed bond with a maturity date matching the investor s horizon the second hedge immunizes against fluctuations in the market price of risk in the bond numeraire various applications are examined new results concerning the behavior of extremely risk averse individuals the demand for bonds and its long horizon limit and the optimal portfolio in incomplete markets are derived the author 2009 published by oxford university press on behalf of the society for financial studies all rights reserved for permissions please email journals permissions oxfordjournals org oxford university press

local financial development and growth using a unique sample of net domestic product data for districts in india i investigate the connection between banking sector development human capital and economic growth at the sub national level using disaggregate data avoids many of the omitted variable problems that plague cross country studies of the finance growth connection and facilitates an instrumentation strategy the findings show that the growth of many districts in india is financially constrained due to lack of banking sector development and that the relationship between finance and growth may be non linear for the districts in the sample moving from the 75th percentile of credit net domestic product to the 25th percentile implies an average loss of 4 percent in growth over the 1990s this indicates that the gains from increased banking sector outreach may be large the analysis shows that human capital deepening can reduce the effect of the financial constraint and help decouple growth from financial development in a district at the 25th literacy percentile the implied growth loss due to a constrained banking sector is twice as large as in a district at the 75th literacy percentile thus higher levels of human capital may activate alternative growth and production channels that are less finance intensive

bonds versus stocks investors age and risk taking abstract it has become increasingly popular to advise investors to relocate their funds from a primarily stock portfolio to a primarily bond portfolio as they get older however the well known decision rules such as mean variance or stochastic dominance rules are unable to explain this common practice almost stochastic dominance asd and almost mean variance amv approaches are used to examine the dominance of stock and bond portfolios asd and amv rules unambiguously support the popular practice of advising higher stock to bond ratio for long investment horizons hence we provide an explanation to the practitioners recommendation within the expected utility paradigm

owner occupied housing and investment in stocks an empirical test abstract this paper analyzes the empirical link between housing investment and stockholding by testing implications of the model of flavin and yamashita american economic review 92 2002 345 362 their model illustrates how the house to net worth ratio influences a homeowner s portfolio composition regression estimates suggest that there is a strong relationship between housing investment and stockholding and the house to net worth ratio could explain certain heterogeneity in stockholding households with a high house to net worth ratio hold a lower proportion in stocks the results support the hypothesis that overinvestment in housing affects financial portfolio of homeowners

portfolio rebalancing in general equilibrium abstract this paper develops an overlapping generations model of optimal rebalancing where agents differ in age and risk tolerance equilibrium rebalancing is driven by a leverage effect that influences levered and unlevered agents in opposite directions an aggregate risk tolerance effect that depends on the distribution of wealth and an intertemporal hedging effect after a negative macroeconomic shock relatively risk tolerant investors sell risky assets while more risk averse investors buy them owing to interactions of leverage and changing wealth however all agents have higher exposure to aggregate risk after a negative macroeconomic shock and lower exposure after a positive shock

semi analytical solutions for dynamic portfolio choice in jump diffusion models and the optimal bond stock mix this paper studies the optimal portfolio selection problem in jump diffusion models where an investor has a hara utility function and there are potentially a large number of assets and state variables more specifically we incorporate jumps into both stock returns and state variables and then derive semi analytical solutions for the optimal portfolio policy up to solving a set of ordinary differential equations to greatly facilitate economic insights and empirical applications of jump diffusion models to examine the effect of jump risk on investors behavior we apply our results to the bond stock mix problem and particularly revisit the bond stock ratio puzzle in jump diffusion models our results cast new light on this puzzle that unlike pure diffusion models it cannot be rationalized by the hedging demand assumption due to the presence of jumps in stock returns

the concentration conduct relationship in bank deposit markets this study investigates the structure conduct performance relationship in retail deposit markets the study explicitly incorporates conduct as the link between structure and performance in local deposit markets it attempts to determine whether banks typically behave competitively or strategically and whether their conduct is influenced by market concentration the empirical investigation is guided by an equilibrium model of a retail deposit market the model is applied to regression equations for local msa mmda and three and six month cd rates the empirical results indicate that strategic conduct is the norm in mmda and in three and six month cd markets copyright 1991 by mit press

optimal dynamic tax evasion a portfolio approach abstract most tax evasion models are set in a timeless environment though this is not suitable for a study of revenues from financial activities where tax evasion occurs in a dynamic environment this study examines a representative agent aiming to maximize the expected utility from inter temporal consumption and could invest in both riskless and risky assets through tax evasion is possible only in the latter case the investor must pay a fine when his her evasion is detected with a given probability we show that i optimal consumption is higher with tax evasion ii optimal evasion is affected by neither the return nor the volatility of the risky asset iii evasion reduces investment in the risky asset and increases investment in the riskless asset iv evasion can be reduced more efficiently by increasing the fine rather than by increasing the frequency of controls v for a sufficiently high tax rate on the riskless asset the optimal evasion is zero and vi if the fine is proportional to the amount of taxes for only sufficiently low fines the yitzhaki 1974 paradox is confirmed

optimal departures from marginal cost pricing focuses on departures from marginal cost pricing optimal allocation or resources level of tax revenue that will be collected by the government theorems developed for resource allocation ebsco

on the strategic choice of spatial price policy the strategic incentives with respect to the choice of price policy in spatial competition are analyzed in a duopoly model price discrimination emerges as the unique equilibriu m outcome in games with either simultaneous choice of policy and pric e or sequential choice where firms may commit first to uniform mill p ricing before the actual market stage nevertheless profits may be h igher with uniform pricing the authors models are applied to analyz e some common business practices that arise in geographical pricing like the basing point system and in the pricing of varieties or opti ons from a base product in a product differentiation context copyright 1988 by american economic association

the price concentration relationship in banking the commonly observed positive correlation between market concentration and profitability may be explained by noncompetitive pricing behavior as argued by the structure performance hypothesis or by the greater efficiency of firms with dominant market shares as argued by the efficient structure hypothesis by examining the price concentration relationship instead of the profit concentration relationship this paper tests the structure performance hypothesis in a manner that excludes the efficient structure hypothesis as an alternative explanation of the results the results strongly support the structure performance hypothesis and are robust with respect to model specification measurement of concentration and econometric technique copyright 1989 by mit press