the relative valuation of caps and swaptions theory and empirical evidence although traded as distinct products caps and swaptions are linked by noarbitrage relations through the correlation structure of interest rates using a string market model we solve for the correlation matrix implied by swaptions and examine the relative valuation of caps and swaptions we find that swaption prices are generated by four factors and that implied correlations are lower than historical correlations long dated swaptions appear mispriced and there were major pricing distortions during the 1998 hedge fund crisis cap prices periodically deviate significantly from the no arbitrage values implied by the swaptions market the growth in interest rate swaps during the past decade has led to the creation and rapid expansion of markets for two important types of swap related derivatives interest rate caps and swaptions these over the counter derivatives are widely used by many firms to manage their interest rate risk exposure and collectively represent the largest class of fixed income options in the financial markets the international swaps and derivatives association isda estimates that the total notional amount of caps and swaptions outstanding at the end of 1997 was over 4 9 trillion which was more than 300 times the 15 billion notional of all chicago board of trade treasury note and bond futures options combined caps and swaptions are generally traded as separate products in the financial markets and the models used to value caps are typically different from those used to value swaptions furthermore most wall street firms use a piecemeal approach in calibrating their models for caps and swaptions making it difficult to evaluate whether these derivatives are fairly priced

contagion as a wealth effect financial contagion is described as a wealth effect in a continuous time model with two risky assets and three types of traders noise traders trade randomly in one market long term investors provide liquidity using a linear rule based on fundamentals convergence traders with logarithmic utility trade optimally in both markets asset price dynamics are endogenously determined numerically as functions of endogenous wealth and exogenous noise when convergence traders lose money they liquidate positions in both markets this creates contagion in that returns become more volatile and more correlated contagion reduces benefits from portfolio diversification and raises issues for risk management during the f inancial panic associated with the default of the russian government in august 1998 and the subsequent collapse of the hedge fund long term capital management numerous hedge funds banks and securities firms tried simultaneously to reduce exposures to a variety of financial instruments such as russian bonds brazilian stocks u s mortgages spreads between on therun and off the run government securities and spreads between swaps and u s treasuries although the fundamental values of these positions would appear to have little correlation during this financial crisis the asset prices in these markets exhibited the following common empirical pattern 1 financial intermediaries suffered losses as prices moved against their positions 2 market depth and liquidity decreased simultaneously in several markets 3 the volatility of prices increased simultaneously in several markets and

sulfur dioxide control by electric utilities what are the gains from trade title iv of the 1990 clean air act amendments caaa established a market for transferable sulfur dioxide so2 emission allowances among electric utilities this market offers firms facing high marginal abatement costs the opportunity to purchase the right to emit so2 from firms with lower costs and this is expected to yield cost savings compared to a command and control approach to environmental regulation this paper uses econometrically estimated marginal abatement cost functions for power plants affected by title iv of the caaa to evaluate the performance of the so2 allowance market specifically we investigate whether the much heralded fall in the cost of abating so2 compared to original estimates can be attributed to allowance trading we demonstrate that for plants that use low sulfur coal to reduce so2 emissions technical change and the fall in prices of low sulfur coal have lowered marginal abatement cost curves by over 50 percent since 1985 the flexibility to take advantage of these chan

taxes on tax exempt bonds implicit tax rates priced in the cross section of municipal bonds are approximately two to three times as high as statutory income tax rates with implicit tax rates close to 100 using retail trades and above 70 for interdealer trades these implied tax rates can be identified because a portion of secondary market municipal bond trades involves income taxes after valuing the tax payments market discount bonds which carry income tax liabilities trade at yields around 25 basis points higher than com parable municipal bonds not subject to any taxes the high sensitivities of municipal bond prices to tax rates can be traced to individual retail traders dominating dealers and other institutions the issue of how taxes affect asset prices is an important issue in finance accounting and economics in theoretical models examining the effect of taxes

the valuation of floating rate instruments abstract a framework for valuing floating rate notes is developed to examine the effects of 1 lags in the coupon formula 2 special contractual features and 3 default risk evidence from a sample of floaters indicates they sold at significant discounts while lags in the coupon formulas and other contractual features make these notes more variable they do not account for the magnitude of the discounts we conclude that the fixed default premium in the coupon formula of a typical note is inadequate to compensate for time varying default premiums demanded by investors who treat other corporate short term paper as close substitutes

systematic variation in yield spreads for tax exempt general obligation bonds in recent years much research has centered upon whether yield differentials between bonds which differ in default risk vary systematically over the business cycle theory suggests that during a cyclical upswing the yield differential or risk premium narrows while during a downswing the differential widens the cyclical behavior of yield spreads is well documented in the corporate bond market 4 8 12 16 this effect has only recently been given attention in the tax exempt bond market 1 11 in addition the municipal bond market may be segmented if tax exempt borrowers and investors are unable to substitute between tax exempt securities of varying default risk changes in the relative supply of and demand for these classes of securities could produce systematic fluctuations in tax exempt yield differentials these effects could be produced by regulatory statutes which require that banks purchase high grade securities and the fixed nature of bond ratings

evil is the root of all money plenary talk delivered at the annual meeting of the society for economic dynamics this abstract was borrowed from another version of this item

market organisation and trading relationships in this paper we give a theoretical model of buyers behaviour on a market for a perishable good where no prices are posted we show that if buyers learn from their own previous experience there is a sharp division between those who learn to be loyal to certain sellers and those who continue to shop around this feature remains in more general models which are simulated and is consistent with empirical data from the marseille fish market

a voting architecture for the governance of free driver externalities with application to geoengineering abating climate change is an enormous international public goods problem with a classical free rider structure however it is also a global free driver problem because geoengineering the stratosphere with reflective particles to block incoming solar radiation is so cheap that it could essentially be undertaken unilaterally by one state perceiving itself to be in peril this exploratory paper develops the main features of a free driver externality in a simple model motivated by the asymmetric consequences of type i and type ii errors i propose a social choice decision architecture embodying the solution concept of a supermajority voting rule and derive its basic properties

stochastic volatilities and correlations of bond yields i develop an interest rate model with separate factors driving innovations in bond yields and their covariances it features a flexible and tractable affine structure for bond covariances maximum likelihood estimation of the model with panel data on swaptions and discount bonds implies pricing errors for swaptions that are almost always lower than half of the bid ask spread furthermore market prices of interest rate caps do not deviate significantly from their no arbitrage values implied by the swaptions under the model these findings support the conjectures of collin dufresne and goldstein 2003 dai and singleton 2003 and jagnnathan kaplin and sun 2003

relative risk in municipal and corporate debt the yields of municipal bonds and corporate bonds are often compared the ratios of municipal bond yields to corporate bond yields are thought by many to be indicative of the marginal tax bracket of the marginal holder of the bonds if for example the ratio is 60 the implication is that an investor in the fortypercent tax bracket will be indifferent between the fully taxed corporate and the fully tax exempt municipal this assumes that the two bonds are currently selling at par such comparisons have attracted increased attention since the publication of merton miller s seminal debt and taxes in this work miller indirectly suggests that the marginal tax bracket at work across tax exempt and taxable bonds is equal to the corporate tax rate while the ratio of yields seems to indicate that this is true for short term bonds the yields of long term taxexempts seem too high relative to long term taxables to confirm miller s hypothesis implicit in these comparisons and the conclusions drawn from them is the tenuous notion that the compared bonds are identical except for the taxability of the coupon for example some authors have questioned whether municipals and corporates are equally risky see trzcinka 1982 the purpose of this paper is to present preliminary evidence on the relative riskiness of the two classes of bonds

discrete choice with social interactions this paper provides an analysis of aggregate behavioural outcomes when individual utility exhibits social interaction effects we study generalized logistic models of individual choice which incorporate terms reflecting the desire of individuals to conform to the behaviour of others in an environment of noncooperative decisionmaking laws of large numbers are generated in such environments multiplicity of equilibria in these models which are equivalent to the existence of multiple self consistent means for average choice behaviour will exist when the social interactions exceed a particular threshold local stability of these multiple equilibria is also studied the properties of the noncooperative economy are contrasted with the properties of an economy in which a social planner determines the set of individual choices finally a likelihood function based on the theoretical model is given and conditions for the econometric identifiability of the model are established

auction failures and the market for auction rate securities abstract the market for auction rate securities ars made headlines during the second week of february 2008 when auctions at which the bonds interest rates reset experienced a wave of failures contrary to headlines that attribute the failures to a frozen market or investors irrationality we find that 1 even at their height less than 50 of ars experienced auction failures 2 the likelihood of auction failure was directly related to the level of the bonds maximum auction rates 3 the implied market clearing yields of bonds with failed auctions were significantly above their maximum auction rates and 4 ars yields were generally higher than yields of various cash equivalent investment alternatives we infer that investors priced the possibility of auctions failures into ars yields and rationally declined to bid for bonds for which required market yields exceeded their maximum auction rates

municipal debt and marginal tax rates is there a tax premium in asset prices we study the marginal tax rate incorporated into short term municipal rates using municipal swap market data using an affine model we identify the marginal tax rate and the credit liquidity spread in 1 week tax exempt rates as well as their associated risk premia the marginal tax rate averages 38 0 and is related to stock bond and commodity returns the tax risk premium is negative consistent with the strong countercyclical nature of after tax fixed income cash flows these results demonstrate that tax risk is a systematic asset pricing factor and help resolve the muni bond puzzle

dealer intermediation and price behavior in the aftermarket for new bond issues municipal bonds trade in decentralized broker dealer markets and are underpriced when issued but unlike equities the average price rises slowly over several days newly issued municipal bonds have high levels of price dispersion and the average price rises because the mix of trade sizes changes over time while large trades occur close to the reoffering price small trades occur between the reoffering price to as much as 5 above the reoffering price using a mixed distribution model we quantify the losses uninformed traders or issuers give up to broker dealers

portfolio choice with illiquid assets we present a model of optimal allocation to liquid and illiquid assets where illiquidity risk results from the restriction that an asset cannot be traded for intervals of uncertain duration illiquidity risk leads to increased and state dependent risk aversion and reduces the allocation to both liquid and illiquid risky assets uncertainty about the length of the illiquidity interval as opposed to a deterministic nontrading interval is a primary determinant of the cost of illiquidity we allow market liquidity to vary from normal periods when all assets are fully liquid to illiquidity crises when some assets can only be traded infrequently the possibility of a liquidity crisis leads to limited arbitrage in normal times investors are willing to forgo 2 of their wealth to hedge against illiquidity crises occurring once every 10 years this paper was accepted by itay goldstein finance

dynamic interaction models of economic equilibrium abstract the paper develops a stochastic dynamic model of economic equilibrium with locally interacting agents the main focus of the study is on the modeling of market interactions those arising in connection with commodity exchange and regulated by price mechanisms the mathematical framework is a control theory for random vector fields on directed graphs the graphs involved serve to describe the spatio temporal structure of commodity flows in the system the main results are concerned with the existence uniqueness and stability of stochastic dynamic equilibria

option theory and floating rate securities with a comparison of adjustable and fixed rate mortgages this article demonstrates how to value floating rate securities in particular adjustable rate mortgages in the presence of default the problem is not a straightforward one since endogenous termination default and prepayment necessitates solution by backward procedures but caps on the floating rate then create path dependencies the solution is to introduce an artificial state variable the past contract rate in addition to the natural stochastic variables the interest and the house price process with this technique a numerical investigation of the properties of defaultable adjustable rate mortgages is provided in all cases a comparison is made with standard fixed rate mortgages coauthors are donald c keenan walter j muller iii and james f epperson copyright 1993 by university of chicago press

default risk cannot explain the muni puzzle evidence from municipal bonds that are secured by u s treasury obligations fama 1977 and miller 1977 predict that one minus the corporate tax rate will equate after tax yields from comparable taxable and tax exempt bonds empirical evidence shows that long term tax exempt yields are higher than theory predicts two popular explanations for this empirical puzzle are that relative to taxable bonds municipal bonds bear more default risk and include costly call options i study u s government secured municipal bond yields which are effectively default free and nonmalleable these municipal yields display the same tendency to be too high i conclude that differential default risk and call options do not explain the municipal bond puzzle article published by oxford university press on behalf of the society for financial studies in its journal the review of financial studies

liquidity backstops and dynamic debt runs liquidity backstops can mitigate runs in this paper we develop a dynamic model of debt runs based on he and xiong 2012 to identify both conceptually and quantitatively the value of a liquidity backstop for its run mitigating role for the purpose of identification we focus on the municipal bond markets for variable rate demand obligations and auction rate securities based on the run episodes in these markets during the financial crisis of 2007 09 and the calibrated model we find that the value of a liquidity backstop is about 14 5 basis points per annum our findings have important policy implications regarding the effectiveness of liquidity backstops in ameliorating problems of financial instability

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