why do suppliers charge larger buyers lower prices the phenomenon of input suppliers charging larger buyer firms relative to smaller buyer firms lower prices is commonly explained in terms of supplier economies of scale supplier competition for larger buyers and the larger bargaining power of larger buyers this paper provides an alternative explanation and shows that the observed direction of differential pricing can benefit the supplier by lowering the level of tacit collusion its buyers can sustain in their output market this result also provides a new mechanism through which a ban on price discrimination by input suppliers may lower consumer welfare

asset pricing in multiperiod securities markets the intertemporal models developed in this paper have been stimulated by the capital asset pricing model capm of sharpe and lintner and the role of factor structure in ross arbitrage pricing theory apt suppose that some one dimensional stochastic process s provides a sufficient statistic for aggregate consumption then a heuristic dynamic programming argument shows that s market wealth and the wealth derivative of the value function for any agent are all locally perfectly correlated it follows from merton s work that there is a linear relationship between the local mean return on a security and the local covariance of that return with the return on the market portfolio the formal development uses martingale representation and martingale projection to obtain an intertemporal capm the history of a scalar brownian motion plays the role of a sufficient statistic we motivate the assumption of a sufficient statistic for aggregate consumption by considering a countable set of securities whose payoffs have an approximate factor structure where the factor components are in the information set generated by an n dimensional brownian motion and the idiosyncratic components are weakly correlated the approximate factor structure on the security payoffs implies that the rates of return have locally an approximate factor structure the role of the market portfolio can now be played by a set of n well diversified portfolios

the role of firm size in bilateral bargaining a study of the cable television industry we examine the effect of buyer merger on bilateral negotiations between a supplier and n buyers merger may have bargaining effects in addition to the usual efficiency effects the effect of merger on the buyers bargaining position depends on the curvature of the supplier s gross surplus function merger enhances worsens the buyers bargaining position if the function is concave convex based on a panel of advertising revenue in the cable television industry our estimates indicate that the gross surplus function for suppliers of program services is convex this result suggests that cable operators integrate horizontally to realize efficiency gains rather than to enhance their bargaining position vis a vis program suppliers

ex day behavior with dividend preference and limitations to short term arbitrage the case of swedish lottery bonds abstract swedish lottery bonds offer a unique opportunity to study ex day effects in an environment where cash distributions are tax advantaged relative to capital gains thus in the lottery bond market we observe a reversal of the preference for capital gains that researchers have cited as an explanation for the ex day behavior of u s equities further in this market there are barriers to short term arbitrage when prices do reflect the tax preferences of individual investors we find the bonds are priced around the ex day to reflect differential tax rates on income and capital gains consistent with the prevailing tax regimes the bonds consistently experience negative returns over the coupon payment period and in fact often sell at negative yields prior to the cash distribution as one would expect given tax motivated trading between high tax investors who buy prior to the distribution and low tax investors who buy after the distribution

evidence on corporate hedging policy this paper provides empirical evidence on the determinants of corporate hedging decisions the paper examines the evidence in light of currently mandated financial reporting require ments and in particular the constraints placed on anticipatory hedging data on hedging are obtained from 1992 annual reports for a sample of 3 022 firms out of the 771 firms classified as hedgers 543 firms disclose information in their annual reports on their hedging activities the remaining 228 firms report use of derivatives but no information on hedging activities based on the evidence i draw the following conclusions with respect to the models of hedging evidence is inconsistent with financial distress cost models evidence is mixed with respect to contracting cost capital market imperfections and tax based models and evidence uniformly supports the hypothesis that hedging activities exhibit economies of scale

environment market share and market power in this paper we develop a process model relating market share to firm profits in particular we specify average price and average cost equations as a function of previous year market share position changes in market share environmental conditions and interactions of environmental conditions with the lagged market position and market share change variables we estimate these equations using pims data after controlling for unobservable factors our results suggest that firms with high market shares derive no extra market power benefits except if they operate in environments with little buyer power instead environmental factors and changes in market share most strongly influence price and cost an analysis of the market share associated with maximal firm profits indicates that for the majority of firms in our sample steadily increasing market share does not always associate with increasing profits giving credence to the proposition that more market share is not always better

the role of market forces in assuring contractual performance the conditions under which transactors can use the market repeat purchase mechanism of contract enforcement are examined increased price is shown to be a means of assuring contractual performance a necessary and sufficient condition for performance is the existence of price sufficiently above salvageable production costs so that the nonperforming firm loses a discounted steam of rents on future sales which is greater than the wealth increase from nonperformance this will generally imply a market price greater than the perfectly competitive price and rationalize investments in firm specific assets advertising investments thereby become a positive indicator of likely performance

a simple model of sectoral adjustment despite the significance of limited labour mobility across sectors few attempts have been made to produce dynamic models of sectoral adjustment which are consistent with perfect foresight and yet flexible enough to allow for a variety of dynamic experiments this paper proposes a simple perfect foresight model of two sector economies in which aggregate sectoral movement of labour takes place through the process of demographic change the model is tractable enough that one can easily examine the effects of intertemporally complicated relative price shocks both exogenous and endogenous under a variety of assumptions on technology

trading as gambling this paper offers evidence from three different samples consistent with investors substituting between playing the lottery and gambling in financial markets in the united states increases in the jackpots of the multistate lotteries powerball and mega millions are associated with significant reductions in small trade participation in the stock market california based discount brokerage clients and german discount brokerage clients are significantly less likely to trade during weeks with larger lottery prizes in the california and german lotteries respectively variation in lottery prizes affects speculative trading in more lottery like securities such as individual stocks and options but not trading in bonds and mutual funds trading that is likely associated with long term savings motives such as trading in retirement accounts does not respond to lottery jackpots either the negative relation between trading activity and jackpots is stronger for individuals who are more likely to play the lottery this paper was accepted by brad barber finance

countervailing power and price transparency we investigate whether improved transparency about prices may increase the countervailing power exercised by buyers of an intermediate good in a model with an informed manufacturer that sells to both informed and uninformed firms we show that full transparency cannot be part of equilibrium due to the strategic effect of the resulting informational spillover transparency policies introduce a distortion for informed segments and are unsuccessful in completely removing the distortion from the uninformed segment welfare effects are hence ambiguous and depend on the weight assigned to uninformed markets our results thus cast further doubt on the value of transparency

insurer hospital bargaining negotiated discounts in post deregulation connecticut this paper uses unique data from the state of connecticut to examine discounting patterns in the state s hospital industry for the years following deregulation 1995 1998 the data provide a rare opportunity to study payer level differences in negotiated discounts for hospital services in addition to presenting descriptive evidence on how discounts vary across payers payer types and hospital types this study uses matched revenue data to analyze the economic determinants of discount magnitudes payer size appears to affect bargaining power but the economic significance of the effect is small the data exhibit patterns consistent with a bargaining explanation in which discount magnitudes depend critically on payers abilities to channel patients to hospitals with which favorable discounts have been negotiated

the effects of derivatives on firm risk and value using a large sample of nonfinancial firms from 47 countries we examine the effect of derivative use on firm risk and value we control for endogeneity by matching users and nonusers on the basis of their propensity to use derivatives we also use a new technique to estimate the effect of omitted variable bias on our inferences we find strong evidence that the use of financial derivatives reduces both total risk and systematic risk the effect of derivative use on firm value is positive but more sensitive to endogeneity and omitted variable concerns however using derivatives is associated with significantly higher value abnormal returns and larger profits during the economic downturn in 2001 2002 suggesting that firms are hedging downside risk

do esg controversies matter for firm value evidence from international data the aim of this paper is to investigate the relationship between environmental social and governance esg controversies and firm market value we use a unique dataset of more than 4000 firms from 58 countries during 2002 2011 primary analysis surprisingly shows that esg controversies are associated with greater firm value however when interacted with the corporate social performance csp score esg controversies are found to have no direct effect on firm value while the interaction appears to be highly and significantly positive building on this evidence we attempt to explore the channels through which csp may enhance market value conducting sample split analysis indicates that higher csp score has an impact on market value only for high attention firms those firms which are larger perform better located in countries with greater press freedom more searched on the internet more followed by analysts and have an improved corporate social reputation thus our findings provide new insights on the role of firm visibility through which firms can profit from their csp

what is the optimal design for lottery linked savings programmes in this article we determine the optimal design of lottery linked savings lls programmes lls vehicles such as lottery bonds are financial instruments that preserve depositors principal but provide randomized variable returns to these depositors through periodic lottery drawings in lieu of the regular coupon payments traditionally received by bondholders this type of asset is very popular in europe we note that the framing of lls instruments is linked to their popularity and we attempt to elucidate that link and thereby determine the optimal structure of payments for lls programmes our goal is to frame lls programmes in a manner that both maximizes their investors satisfaction and preserves their ability to serve as inexpensive sources of capital for their issuers we demonstrate that the optimal pay off structure is characterized by a high level of skewness as investors are willing to accept a decrease in the small and medium prizes of the lottery in exchange for an increase in the grand pri

the role of foreign institutional investors in restraining earnings management activities across countries this study investigates the role of foreign institutional investors fiis in restraining earnings management activities of firms under varying levels of investor protection firms manage their earnings less when independent fiis are among their shareholders especially for firms in which monitoring is more valuable firms in weak investor protection countries and when firms have greater growth opportunities these effects are robust to a quasi exogenous shock to fiis shareholdings unobserved firm heterogeneity and alternative earning management measures fiis are associated with an increase in foreign director presence on corporate boards and audit committees

a dynamic theory of countervailing power in this article i develop a model of an infinitely repeated procurement auction with one buyer and several sellers the buyer can accumulate a backlog of unfilled orders which similar to a boom in demand forces the sellers to collude on a low price to prevent undercutting if the buyer s cost of shifiing its consumption over time is low enough then the extent of collusion is bounded away from the joint profit maximizing level even for discount factors approaching one the model is extended to allow for multiple buyers large buyers are shown to obtain lower prices from the sellers buyer mergers increase pro t for all buyers not just the merging pair at the expense of the sellers in contrast buyer growth through addition harms buyers that do not grow and benefits sellers

correlated demand shocks and price wars during booms the supergame theoretic model of price competition rotemberg and saloner 1986 is re examined in the case of serially correlated demand shocks the equilibrium price is shown to exhibit the same counter cyclical movement as in the i i d case if the discount factor and the number of firms satisfy certain relationship

the flip side of fashion used clothing exports to the third world since the early 1970s western countries have increasingly recycled their second hand clothes by exporting to the third world in response some ldc governments have banned used clothing imports to protect their domestic textile industries this article after reviewing the structure and evolution of world used clothing trade examines the consequences for africa s largest importer rwanda in this low income country with its small domestic textile industry displacement is minimal and imported used clothing offers a modest but rare policy lever for directly increasing national income as well as incomes of the rural poor

group purchasing nonlinear tariffs and oligopoly abstract loyalty discounts are nonlinear tariffs that condition rebates or marginal prices on meeting aggregate purchase or market share targets these discounts are widespread and are often the impetus for consumers to form buying groups or group purchase organizations gpos this paper models the competitive effects of the introduction of a gpo into a market within which the preferences of the gpo s members are horizontally differentiated while nonlinear tariffs are an effective way for a monopolist to extract consumer surplus when two suppliers compete using such schedules the results are far more competitive in comparison to simple bertrand nash competition with linear tariffs this result holds when the product of each of the suppliers is attractive to a substantial portion of consumers in our model the nonlinear schedule puts all customers in play to a degree that contrasts sharply with the competition at the margin characteristic of constant per unit prices moreover competing in nonlinear tariffs removes allocative inefficiency that can result from single price competition

monopoly with incomplete information recent theoretical research on principal agent relationships has emphasized incentive problems that arise when the parties involved are constrained by either asymmetric information or their inability to monitor each other s actions here we concentrate on the former constraint and consider the case of a single principal the monopolist the main contribution is to show that under a separability assumption strong conclusions can be drawn about the nature of optimal incentive schemes although the primary focus is on optimal quantity discounts in a monopolized market the results also shed light on related topics such as optimal income taxation and commodity bundling

structural change and economic growth this paper presents a model in which a country s measured average propensity to save endogenously rises when its economy industrializes the model has agricultural and manufacturing sectors only agriculture uses land if at early dates income per capita is low agricultural consumption is important land is valuable and capital gains on land may constitute most wealth accumulation leaving the country s nipa aps low if exogenous technological progress raises incomes over time engel s law shifts demand to manufactured goods then land s portfolio importance relative to reproducible capital diminishes and the national income and products account saving rate can rise this paper presents a model illustrating that structural change due to the operation of engel s law can systematically affect an economy s measured saving rate according to the model a country s national income and product account average propensity to save will rise naturally if and when technological progress sufficiently lifts its income per capita this suggests a new interpretation of time series evidence while saving rates historically tend to be higher after industrialization than before one cannot automatically infer that changing wealth accumulation behaviour led to modernization rather structural change accompanying growth may have caused the rise in saving rates this paper also warns that international trade could lead to a contrasting pattern in cross sectional data highincome nations might contemporaneously have lower measured saving rates than poor countries recent work by mankiw romer and weil 1992 islam 1995 mankiw 1995 and others investigates long run patterns the analyses assume that each economy has attained or is moving toward a steady state equilibrium as in solow 1956 a country s steady state level of per capita gdp depends on its average propensity to save aps its rate of population growth the efficiency of its production sector etc regression outcomes seem consistent with the solow model s prediction that a higher aps will ceteris paribus lead to a higher level of income per capita the idea is that heterogeneity of exogenous preferences leads to international differences in aps s and in turn to long run differences

the dynamics of performance volatility and firm valuation we construct a model to illustrate the dynamics of cash flow volatility cfv and firm valuation as a firm progressively invests in its growth opportunities its book value increases and catches up with its market value reducing the valuation multiple q cfv decreases because of the diversification effect of investing in more market segments we document a positive cfv q association which varies with firm size investment opportunities and the correlation across market segments empirical findings strongly support the model s predictions and are robust to alternative explanations offered by extant studies on firm growth volatility and valuation

the pricing of corporate debt a note to develop a theory of the risk structure of interest rates r c merton 2 defines the risk as the possible gains or losses to bond holders as a result of unanticipated changes in the probability of default p 449 he derives the pricing theory of a pure discount bond corporation debt along the line of blackscholes 1 comparative statics are used to develop graphs of the risk structure although his algebraic derivation is correct his graphical presentation is inadvertently wrong

do vertical mergers facilitate upstream collusion we investigate the impact of vertical mergers on upstream firms ability to collude when selling to downstream firms in a repeated game we show that vertical mergers give rise to an outlets effect the deviation profits of cheating unintegrated firms are reduced as these firms can no longer profitably sell to the downstream affiliates of their integrated rivals vertical mergers also result in an opposing punishment effect integrated firms typically make more profit in the punishment phase than unintegrated upstream firms the net result of these effects in an unintegrated industry is to facilitate upstream collusion we provide conditions under which further vertical integration also facilitates collusion

buyers miscoordination entry and downstream competition this article shows that buyers coordination failures might prevent entry in an industry with an incumbent firm and a more efficient potential entrant if there were a single buyer or if all buyers formed a central purchasing agency coordination failures would be avoided and efficient entry would always occur more generally exclusion is less likely the lower the number of buyers for any given number of buyers exclusion is less likely the more fiercely buyers compete in the downstream market first intense competition may prevent miscoordination equilibria from arising second in cases where miscoordination equilibria still exist it lowers the maximum price that the incumbent can sustain at such exclusionary equilibria buyers have experienced increased concentration in many sectors in particular grocery retailing 1 2 this trend has triggered a wide debate on the effects of buyer power 3 we contribute to this debate by studying how concentration and competition among buyers affect the possibility of entry by a new upstream supplier in an industry characterised by scale economies in our model buyers fragmentation may lead to a situation where a new upstream firm does not manage to enter a market although endowed with lower marginal costs than an incumbent firm when several buyers decide independently from which supplier to purchase miscoordination equilibria may arise where all buyers buy from the incumbent even if the entrant sets a lower price if all buyers address the incumbent none of them has an incentive to deviate that is to switch to the entrant anticipating that a single order would not allow the

tobin s q and the gains from takeovers this paper analyzes the relation between takeover gains and the q ratios of targets and bidders for a sample of 704 mergers and tender offers over the period 1972 1987 target bidder and total returns are larger when targets have low q ratios and bidders have high q ratios the relation is strengthened after controlling for the characteristics of the offer and the contest this evidence confirms the results of the work by lang stulz and walkling and shows that their findings also hold for mergers and after controlling for other determinants of takeover gains in a recent paper lang stulz and walkling lsw 1989 document that the abnormal returns in tender offers are related to the tobin s q ratios of the targets and the bidders in particular they find that target bidder and total returns are higher when takeover targets have high q ratios and bidders have low q ratios where one is used as a cutoff point to separate high q firms from low q firms in fact bidders with high q ratios have significant positive abnormal returns when they engage in a takeover while bidders with low q ratios have significant negative abnormal returns the best takeovers in terms of value creation are those where a high q firm takes over a low q firm the opposite scenario holds for the worst case takeovers low q firms taking over high q firms if q is interpreted as a measure of managerial performance these findings imply that better performing firms also make better acquisitions and that more value can be created from taking over poorly performing companies while the results of lsw are insightful they leave a number of questions unanswered their sample consists only of tender offers several studies have documented that the returns to targets in mergers are smaller than those in tender offers see jensen and ruback 1983 and huang and walkling 1987 it would therefore be useful to see whether the lsw 1989 results hold for a larger sample which includes both mergers and tender offers previous research has also shown that the characteristics of the takeover hostile versus friendly and single versus multiple bidder the form of payment cash versus securities the time period before 1968 1968 1980 1981 and later and the relative size of target and bidder are important determinants of the magnitude of takeover gains and their distribution

managed care s price bargaining with hospitals research has shown that managed care mc slowed the rate of growth in health care spending in the 1990s primarily via lower unit prices paid however the mechanism of mc s price bargaining has not been well studied this article uses a unique panel dataset with actual hospital prices in massachusetts between 1994 and 2000 to examine the sources of mc s bargaining power i find two significant determinants of price discounts first plans with large memberships are able to extract volume discounts across hospitals second health plans that are more successful at channeling patients can extract greater discounts patient channeling can add to the volume discount that plans negotiate

bilateral monopolies and incentives for merger the paper presents a model of duopoly in which firms acquire inputs through bilateral monopoly relations with suppliers it combines a bargaining model with a duopoly model to examine how input pri

the loss leader is a turkey targeted discounts from multi product competitors abstract i show that multi product firms can compete for their more profitable customers by setting lower margins on goods that are purchased primarily by them effectively offering them discounts without offering these discounts to less profitable customers this suggests a theory of multi product pricing in which a good s profit margin is inversely related to the profitability of the customers who purchase it this theory i provides one explanation for firms offering lower prices to larger customers and ii suggests that loss leader pricing may allow firms to compete more vigorously for more profitable customers this can explain why stores sell turkeys as loss leaders at thanksgiving but may not discount flowers on mother s day or candy on valentines day

multimarket contact and collusive behavior traditional analyses of industrial behavior typically link the exercise of market power in an industry to internalfeatures such as demand conditions concentration and barriers to entry nevertheless some economists have remained concerned that external factors such as contact across markets may also play a significant role in determining the level of competitiveness in any particular industry in this article we examine the effect of multimarket contact on the degree of cooperation that firms can sustain in settings of repeated competition we isolate conditions under which multimarket contact facilitates collusion and show that these collusive gains are achieved through modes of behavior that have been identified in previous empirical studies of multimarketfirms

growth and barriers to growth among nairobi s small and medium sized garment producers abstract few of nairobi s small and medium sized garment enterprises actually grow understanding why this should be so requires recognition both of their common problems and of the variations in their organization and market relations two factors appear critical for the growth of all of the producers demand for new clothing and the firm s initial capital other growth constraints differ according to the type of firm space constraints are highlighted as especially important for businesses presently operating in market stalls the design of policy and donor interventions needs to consider both the commonalities and the differences among firms

used clothing donations and apparel production in africa this article examines the importance of one possible explanation for the failure of african countries to step onto the bottom rung of the manufacturing sophistication ladder that is to produce apparel used clothing donations to thrift shops and other organisations in industrialised countries typically end up being sold to consumers in africa since used clothing is initially provided as a donation it shares characteristics with food aid which always assists consumers but at times harms african food producers used clothing imports are found to have a negative impact on apparel production in africa explaining roughly 40 of the decline in production and 50 of the decline in employment over the period 1981 2000

are investors rational choices among index funds s p 500 index funds represent one of the simplest vehicles for examining rational behavior they hold virtually the same securities yet their returns differ by more than 2 percent per year although the relative returns of alternative s p 500 funds are easily predictable the relationship between cash flows and performance is weaker than rational behavior would lead us to expect we show that selecting funds based on low expenses or high past returns outperforms the portfolio of index funds selected by investors our results exemplify the fact that in a market where arbitrage is not possible dominated products can prosper

the welfare effects of third degree price discrimination in intermediate good markets the case of bargaining this article examines the welfare effects of third degree price discrimination by a monopolist selling to downstream firms with bargaining power one of the downstream firms the chain store can integrate backward at lower cost than rivals bargaining powers also depend on disagreement profits bargaining weights and concession costs if the chain s integration threat is not credible price discrimination reduces the input price charged symmetric downstream firms and often reduces the average input price charged asymmetric downstream firms

choosing the precision of performance metrics there is a standard trade off in compensation contracts between the provision of incentives and insurance we hypothesize that this trade off influences the precision with which firm performance is measured we find that firm outcomes are measured less precisely when chance plays a large role in these outcomes further this precision is determined through the choice of shares outstanding this has several novel implications nominal stock prices can remain constant over time and firms with unpredictable cash flows should have more shares and lower stock price levels all else equal we find evidence consistent with these implications

the value of consumer choice and the decline in hmo enrollments i introduction and overview health insurance contracts may restrict consumers choice of medical provider in order to minimize moral hazard for example consumers who are insured for their marginal healthcare expenses have no incentive to enforce price discipline on their own in this case insurers may impose this discipline by restricting consumers choice of medical provider to those who offer competitive prices 1 this practice known as selective contracting sc may have other benefits as well including channeling consumers to efficient providers and achieving other efficiencies associated with partial vertical integration sc has been utilized by insurers both in the united states and abroad 2 however it is not a universal feature of health insurance contracts in part this is because reducing the choice set of medical providers imposes costs on consumers to the extent that consumers assign option value to choice capps dranove and satterthwaite 2003 for example sc was widely employed in the united states by health maintenance organizations hmos and other insurers in the 1990s and appears to have been an important cost control mechanism cutler mcclellan and newhouse 2000 robinson and phibbs 1989 however most private u s health insurers moderated their use of sc during the past decade at the same time that healthcare costs accelerated anecdotally a consumer and regulatory backlash against provider choice restrictions forced insurers to expand choice and largely abandon the practice blendon et al 1998 vita 2001 simultaneously hmo enrollments declined the purpose of this article is to explore the economic tradeoffs of sc with a particular focus on directly measuring the value that consumers assign to choice in medical markets i am interested in assessing whether the magnitude of any utility loss from choice restrictions can be offset by volume based price discounts that insurers may receive from hospitals my results bear on the larger question of whether an economic linkage can be drawn between consumers demand for choice and their apparent rejection of what is called tightly managed care they also have implications for many healthcare reform proposals that necessarily imply restrictions on the consumers choice sets i analyze health plan s sc of hospitals in the state of florida between 1999 and 2003 hospital sc restricts consumer choice in multiple ways including their choice of hospital in addition hospital choice restrictions imply restrictions over the use of specific physicians 3 i start by constructing hospital networks for each of a set of plan choices and then estimate a discrete choice model of health insurance demand conditional on each plan s restricted network for these purposes i use the capps dranove and satterthwaite 2003 measure of sc disutility that focuses on the option value of choice i employ several different discrete choice estimators to estimate the model including models with plan metropolitan statistical area msa fixed effects designed to control for unobserved plan attributes this provides me with estimates of disutility resulting from choice restrictions subsequently i project the estimated plan effects onto an instrumented value of plan price in order to estimate the price elasticity and also convert my disutility estimates into dollars my results show that consumers associated restrictive hospital networks with plan disutility during each of the years of the study period with choice elasticities that range from 0 10 to 0 32 in pooled estimates greater effects are obtained in 2003 using models where i allow the estimates to vary by year using my instrumental variables methodology to recover unbiased price coefficients i show that consumers associated a one standard deviation reduction in the size of a plan s hospital network with a reduction in plan value of between 62 and 118

a theory of hub and spoke collusion abstract we develop a model of hub and spoke collusion between a manufacturer and two retailers demand is stochastic and collusion between retailers is difficult the best collusive equilibrium is inefficient rotemberg and saloner 1986 in the hub and spoke collusive agreement retailers transmit their information about the state of demand to the supplier the supplier uses this information to adjust the wholesale price by organizing the collusion the supplier increases profits of the vertical chain we show that surprisingly this type of collusive agreement can under some conditions improve consumer welfare

liquidity taxes and short term treasury yields this article investigates differences in yields on identical treasury notes and bills and shows that they reflect differences in liquidity immediacy risk and taxes it proposes an empirical measure for differences in the liquidity risk of notes and bills the volatility ofthe underlying rate times the ratio of bills turnover to notes turnover because differential taxes affect sellers but not buyers of bills and notes the results reject free of informational problems the hypothesis that the notes demand curve is horizontal note bill yield differences also decrease with inventories of notes the less liquid asset

do investors value smooth performance abstract this paper presents empirical evidence that cash flow volatility is negatively valued by investors the magnitude of the effect is substantial with a 1 increase in cash flow volatility resulting in approximately a 0 15 decrease in firm value we show that this increase however is not associated with earnings smoothing resulting from managers accrual estimates our results are consistent with a preference by the market for less volatile cash flows and suggest that managers efforts to produce smooth financial statements add value but only via the cash component of earnings

a unified beta pricing theory abstract this paper derives ross s mutual fund separation theory and a new equilibrium version of ross s arbitrage pricing theory as special cases of a general theory the paper also reveals that the two theories are identical in their predictions of asset prices and portfolio returns the capital asset pricing model a restricted case of the mutual fund separation theory receives special treatment

explaining african economic performance africa has had slow growth and a massive exodus of capital in many respects it has been the most capital hostile region we review and interpret the aggregate level and microeconomic literatures to identify the key explanations for this performance there is a reasonable correspondence of the two sets of evidence pointing to four factors as being important these are a lack of openness to international trade a high risk environment a low level of social capital and poor infrastructure these problems are to a substantial extent attributable to government behaviour and the paper includes a review of the political economy literature which addresses that behaviour

an explanation for accounting income smoothing it is widely believed that corporate managers often engage in income smoothing taking actions to dampen fluctuations in their firms publicly reported net income one reason given for this is that managers think that investors pay more for a firm with a smoother income stream see ronen and sadan 1981 while there have been many empirical studies attempting to document whether or not income smoothing actually occurs there has been little exploration of why a manager might rationally want to smooth his firm s income explaining why smoothing might be observed and how it can result in an increased stock price is the focus of this paper in two recent studies lambert 1984 and dye 1988 demonstrate in agency settings that a risk averse manager who is precluded from borrowing and lending in the capital markets has an incentive to smooth his firm s reported income in this paper in contrast it is shown that within a market setting an incentive exists for a manager to smooth income that is independent of either risk aversion or restricted access to capital markets the market setting is also useful in that it allows for the analysis of the effect of income smoothing on stock prices it is shown here that if a manager can choose which of two periods to recognize certain income he may prefer the choice that is expected to

customer concentration and over investment this paper investigates the impact of customer concentration on a supplier firm s over investment behaviour based on a large sample analysis on the us market we find that a supplier firm with hig

the valuation of nonsystematic risks and the pricing of swedish lottery bonds swedish government lottery bonds have coupon payments determined by lottery they offer a unique opportunity to study a security with uncertain payoffs having a known observable distribution the risk associated with the lotteries is idiosyncratic by construction and should not command a risk premium in equilibrium the bonds are traded in two forms allowing us to evaluate the rewards to bearing extra lottery risk despite its idiosyncratic nature we find prices appear to reflect aversion to this risk we evaluate the empirical determinants of this differential pricing and possible explanations for it article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

choice under uncertainty problems solved and unsolved ffifteen years ago the theory of choice under uncertainty could be considered one of the success stories of economic analysis it rested on solid axiomatic foundations it had seen important breakthroughs in the analytics of risk risk aversion and their applications to economic issues and it stood ready to provide the theoretical underpinnings for the newly emerging information revolution in economics 1 today choice under uncertainty is a field in flux the standard theory is being challenged on several grounds from both within and outside economics the nature of these challenges and of our profession s responses to them is the topic of this paper

collusion and the choice of auction auctions are used in many different markets including the leasing of a substantial fraction of the natural resources in the united states the procedures used in the auctions conducted by the federal government have been a continuing source of controversy one of the concerns has been the possibility of collusion among bidders this article shows that cartels are stable if the seller uses open ascending bid oral auctions but not if he uses sealed high bid auctions this may help to explain the frequent use of sealed high bid auctions

do firms hedge in response to tax incentives there are two tax incentives for corporations to hedge to increase debt capacity and interest tax deductions and to reduce expected tax liability if the tax function is convex we test whether these incentives affect the extent of corporate hedging with derivatives using an explicit measure of tax function convexity we find no evidence that firms hedge in response to tax convexity our analysis does however indicate that firms hedge to increase debt capacity with increased tax benefits averaging 1 1 percent of firm value our results also indicate that firms hedge because of expected financial distress costs and firm size an increasing number of corporations use financial derivatives each year the international swaps and derivatives association reports that the notional value of outstanding otc swap contracts increased from 11 3 trillion in 1994 to more than 60 trillion by mid 2000 http 00www isda org this is interesting because financial theory tells us that corporate risk management enhances value only in the presence of costly market imperfections a number of empirical studies examine derivative holdings to identify which of the proposed theoretical incentives and imperfections lead to corporate hedging our paper adds to the hedging literature by testing whether corporations respond to two tax related incentives to hedge the incentive to reduce volatility thereby increasing debt capacity and the tax benefits of debt and the incentive to reduce expected tax liabilities by reducing the volatility of taxable income we also use a refined dependent variable to measure net

gains from trade in used goods evidence from automobiles abstract i investigate the welfare effects of trade liberalization by exploiting a natural policy experiment in the economy of cyprus a 1993 law relaxed import restrictions on used vehicles and enabled the importation of second hand japanese automobiles into the country this led to a dramatic shift of consumer purchases from new to used cars and a substantial expansion of the overall market welfare gains computed from a structural demand system average 2000 per purchaser per year over a four year period after the policy change the findings are suggestive of the potential for substantial gains from liberalizing trade in used goods

vertical bargaining and retail competition what drives countervailing power this article investigates the effects of changes in market concentration on the equilibrium prices in a supply chain results are derived from a theoretical model of bilateral bargaining between upstream and downstream firms which allows for general forms of demand and retail competition whether countervailing buyer power arises in the form of lower input prices following greater concentration downstream depends on the pass through rate of input prices to retail prices countervailing buyer power generally does not translate into lower retail prices because of heightened market power at the retail level

collusion over the business cycle we present a theory of collusive pricing for markets in which demand alternates stochastically between fast growth boom and slow growth recession phases we show that 1 the most collusive prices are weakly procyclical countercyclical when demand growth rates are positively negatively correlated through time and 2 the amplitude of the collusive pricing cycle is larger when the expected duration of boom phases decreases and when the expected duration of recession phases increases we also offer a generalization of rotemberg and saloner s 1986 model interpreting their findings in terms of transitory demand shocks that occur within broader business cycle phases

quality standards for used durables an indirect subsidy abstract we construct a theoretical framework to study the impact of quality standards for used durable goods on trade ows pro ts and consumer welfare we show that asymmetric quality standards generate trade in used goods from high to low standard countries while at the same time reducing trade in new goods producers in the exporting country bene t from this change while consumers lose in the importing country consumers are better off but domestic industry is hurt these ndings suggest that quality standards on used goods may be a powerful policy tool whose use should be monitored by the wto

borrowing cost reduction by interest rate swaps an option pricing analysis abstract interest rate swaps generally involve two firms with different credit ratings a quality spread differential qsd is observed to exist at different maturities for firm debts with different credit ratings the quality spread differential allows two firms with different credit ratings to decrease their borrowing costs through interest rate swaps by utilising their comparative advantage in borrowing in different markets the credit ratings of firms are determined by credit risk factors such as leverage and volatility of earnings asset value this paper investigates the effect of the leverage and the volatility on the behaviour of risk premia between firm debts with different credit ratings by using the contingent claim analysis our results show that the quality spread differential can be explained by the differences in leverage and volatility thus two firms with different leverage and volatility of earnings asset value will benefit from interest rate swaps however it is found that the duration within which the qsd exists is limited by the values of the leverage and the volatility of two firms in conclusion this paper shows that interest rate swaps can help the firms to lower borrowing costs without necessarily relying on the arbitrage argument asserted by existing literature

operational hedges and the foreign exchange exposure of u s multinational corporations this paper examines the impact of operational hedges of us multinational corporations mncs on their exchange rate exposure the two important contributions of this study are first it documents the importance of operational hedges as significant determinants of exchange rate risk as measured by breadth and depth dimensions of the mnc foreign subsidiary network second this finding remains robust even after examining the impact of operational hedges on exposure separately for negatively and positively exposed mncs

why do larger buyers pay lower prices intense supplier competition abstract the paper provides a theoretical explanation of the common claim that larger buyers pay lower prices in the model suppliers compete more aggressively for the business of larger buyers much as they do in boom periods of rotemberg and saloner

a multi attribute comparative evaluation of relative risk for a sample of banks abstract this paper proposes a comparative analysis of five different attributes of commercial banks liabilities that may be thought of as either directly measuring the default risk or are perceived by the market as impacting upon that default risk two of these attributes are credit ratings assigned by moody s and standard and poor s to debt issues the third attribute that we consider is yield to maturity which is typically assumed to be positively related to default risk the fourth attribute that is proposed is the fair value risk adjusted deposit insurance premium derived from option theoretic modeling and estimated from the daily data on equity prices finally we propose a term structure adjusted difference in yield between the risky debt and default free government debt as a more precise and theoretically sound measure of the default risk premium and develop a methodology for eliciting it on a composite basis for a given bank from the market prices of its various bond issues this term structure adjusted risk premium provides an analytical approximation to the valuation of corporate bonds call features and sinking fund provisions in view of the ordinality of the credit ratings given by the investment agencies spearman s rank correlation coefficient is employed as an analytical tool the analysis

the impact of climate risk on firm performance and financing choices an international comparison increasingly adverse climatic conditions have created greater systematic risk for companies throughout the global economy few studies have directly examined the consequences of climate related risk on financing choices by publicly listed firms across the globe we attempt to do so using the global climate risk index compiled and published by germanwatch kreft eckstein 2014 which captures at the country level the extent of losses from extreme weather events as expected we find the likelihood of loss from major storms flooding heat waves etc to be associated with lower and more volatile earnings and cash flows consistent with policies that attempt to moderate such effects we show that firms located in countries characterized by more severe weather are likelier to hold more cash so as to build financial slack and thereby organizational resilience to climatic threats those firms also tend to have less short term debt but more long term debt and to be less likely to distribute cash dividends in addition we find that certain industries are less vulnerable to extreme weather and so face less climate related risk our results are robust to using an instrumental variable approach a propensity score matched sample and path analysis and remain unchanged when we consider an alternative measure of climate risk finally our conclusions are invariant to the timing of financial crises that can affect different countries at different times

individual vs aggregate preferences the case of a small fish in a big pond we study the relationship between the risk preferences of individuals and the risk preferences of the aggregate economy to emphasize the vast differences that can occur between individual and market preferences brought about through aggregation we assume an economy consisting entirely of risk seekers we show that such individuals can lead to an aggregate economy that is risk averse the converse is also true an aggregate economy that exhibits risk aversion does not imply an economy of individual risk averters an economy demanding a risk premium can be formed from individuals who do not demand such compensation understanding the relationship between the preferences of individuals and the preferences of the aggregate economy is crucial for understanding the connection between the behavioral finance literature which focuses on individual preferences and the asset pricing literature which focuses on aggregate prices we discuss empirical implications of these results this paper was accepted by wei xiong finance

the impact of cyclical demand movements on collusive behavior recent work by rotemberg and saloner 1986 investigates the effect of the business cycle on optimal collusive pricing by specifying that demand is subject to i i d shocks an implication of the i i d assumption is that firms expectations on future demand are unrelated to the current level of demand we put forth a model that allows for both the level of current demand and firms expectations on future demand to change over time thus it captures two important properties of the business cycle our analysis reveals that while the gain to deviating from a collusive agreement is greatest during booms firms find it most difficult to collude during recessions as the forgone profits from inducing a price war are relatively low an implication of this effect for pricing behavior is that at the same level of demand price is lower when demand is declining than when demand is rising consistent with previous theoretical work we find that firms price countercyclically for a range of values for the discount factor however numerical simulations reveal a greater tendency for firms to price countercyclically during recessions than during booms

the economic theory of vertical restraints the types of contracts arising in a typical vertical manufacturer retailer relationship are more sophisticated than a simple uniform price in addition to setting per unit prices manufacturers and retailers also revert to non linear pricing and non price instruments these instruments or contracts are referred to as vertical restraints and can take the form of franchise fees resale price maintenance exclusive dealing exclusive territories and slotting allowances the use and the effects of one type of instrument versus another depend crucially on specific market assumptions upstream and downstream and on the division of bargaining power between manufacturers and retailers this paper surveys the industrial organization literature on retail pricing and shows that vertical restraint instruments have important effects on producer and consumer prices market structure efficiency and welfare

exchange rate exposure hedging and the use of foreign currency derivatives abstract we examine whether firms use foreign currency derivatives for hedging or for speculative purposes using a sample of s p 500 nonfinancial firms for 1993 we find evidence that firms use currency derivatives for hedging as their use significantly reduces the exchange rate exposure firms face we also find that while the decision to use derivatives depends on exposure factors i e foreign sales and foreign trade and on variables largely associated with theories of optimal hedging i e size and r d expenditures the level of derivatives used depends only on a firm s exposure through foreign sales and trade

pricing black scholes options with correlated credit risk abstract this paper presents an improved method of pricing vulnerable black scholes options under assumptions which are appropriate in many business situations an analytic pricing formula is derived which allows not only for correlation between the option s underlying asset and the credit risk of the counterparty but also for the option writer to have other liabilities further the proportion of nominal claims paid out in default is endogenous to the model and is based on the terminal value of the assets of the counterparty and the amount of other equally ranking claims numerical examples compare the results of this model with those of other pricing formulas based on alternative assumptions and illustrate how the model can be calibrated using market data

a simple model of the taxable and tax exempt yield curves i examine the anomalous behavior of the taxable and tax exempt yield curves long municipal yields appear too high relative to the equivalent after tax yield that can be earned in treasury or corporate bonds i discuss existing explanations of the problem and propose a simple model that relates the yields of taxable bonds to the yield curve for par tax exempts the ratio of the tax exempt yield to the taxable yield increases with maturity in the model so it is consistent with observed phenomena such as inverted yield curves for taxables and contemporaneous rising yield curves for tax exempts statistical and descriptive comparisons between the yields predicted by the model and observed yields on par bonds that the model has some promise in explaining the apparent anomalies in the behaviors of the two yield curves article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

the impact of cash flow volatility on discretionary investment and the costs of debt and equity financing abstract we show that higher cash flow volatility is associated with lower average levels of investment in capital expenditures r d and advertising this association suggests that firms do not use external capital markets to fully cover cash flow shortfalls but rather permanently forgo investment cash flow volatility also is associated with higher costs of accessing external capital moreover these higher costs as measured by some proxies imply a greater sensitivity of investment to cash flow volatility thus cash flow volatility not only increases the likelihood that a firm will need to access capital markets it also increases the costs of doing so

on the determinants of corporate hedging finance theory indicates that hedging increases firm value by reducing expected taxes expected costs of financial distress or other agency costs this paper provides evidence on these hypotheses using survey data on firm s use of forwards futures swaps and options combined with computstat data on firm characteristics of 169 firms in the sample 104 firms use hedging instruments in 1986 the data suggest that firms which hedge face more convex tax functions have less coverage of fixed claims are larger have more growth options in their investment opportunity set and employ fewer hedging substitutes