Prediction of return with the minimum variance zero-beta portfolio

This paper tests prediction of returns on stocks using a direct estimate of the minimum variance zero beta portfolio z. The composition of this portfolio is implicit in Black's paper on capital market equilibrium in the absence of riskless borrowing or lending. Portfolios of stocks drawn from the same industries are used to estimate z. The predictions of Black's equilibrium return equation are compared with those of cross-sectional regressions of return on risk.     

A critique of the asset pricing theory's tests Part I: On past and potential testability of the theory

Testing the two-parameter asset pricing theory is difficult (and currently infeasible). Due to a mathematical equivalence between the individual return/‘beta’ linearity relation and the market portfolio's mean-variance efficiency, any valid test presupposes complete knowledge of the true market portfolio's composition. This implies, inter alia, that every individual asset must be included in a correct test. Errors of inference inducible by incomplete tests are discussed and some ambiguities in published tests are explained.     

A Monte Carlo investigation of the accuracy of multivariate CAPM tests

In a multivariate regression model relating individual returns to the market return, CAPM implies non-linear restrictions on the parameters. Several asymptotically valid tests of these restrictions have been suggested. The existing Monte Carlo evidence shows that some of these tests are unreliable for reasonable sample sizes, but does not indicate well which tests are reliable. This paper reports the results of an extensive Monte Carlo experiment. Shanken's CSR test and Jobson and Korkie's corrected likelihood ratio test are quite accurate in all cases we consider.     

What's different about banks?

Negotiable certificates of deposit (CD's) trade in the capital market in competition with other securities like commercial paper and bankers' acceptances. If CD's must pay lenders competitive monetary interest, the reserve tax on CD's is borne by bank borrowers. Viability of the tax means there must be something special about bank loans that makes some borrowers willing to pay higher interest rates than those on other securities of equivalent risk. Moreover, there must be something special about banks that prevents other intermediaries from competing to assure that it never pays to finance loans with CD's.     

Measuring portfolio performance and the empirical content of asset pricing models

Recent work by Richard Roll has challenged the worth of portfolio performance measures based on the capital asset pricing model. This paper demonstrates that Roll's conclusions are due to his focusing on a ‘truly’ ex-ante efficient index. Using a choice and information theoretic framework, we show that an appropriate index is efficient relative to the probabilities assessed by the ‘market’. Residual analyses and portfolio performance tests, using such an index, yield meaningful results for a wide class of information structures. Roll's primary criticisms, however, relate to tests of the asset pricing model itself. We argue that these criticisms are vastly overstated.     

Optimum consumption and portfolio rules with money as an asset

This article generalizes Merton's optimum consumption and portfolio rules in continuous time by introducing money as a capital asset and allowing for uncertain inflation. Assuming that prices are log-normally distributed, a three-funds theorem is derived and the introduction of money is shown not to change the form of the standard inflation-adjusted CAPM but to change the market price of risk. The individual's consumption-portfolio problem is completely solved under uncertain inflation if his utility function is iso-elastic in its arguments. Comparative statics are used to assess the influence of changes in exogenous parameters on the individual's optimal rules.     

Systematic risk and the theory of the firm: A reexamination

A recent microeconomic model of the determinants of equity betas (Subrahmanyam and Thomadakis 1980) is generalized by including risky human capital in the market portfolio and allowing a general covariance structure between the model's sources of uncertainty. This provides an explanation of the ambiguous effect of operating leverage on beta by viewing human capital and equity contributors as risk sharers in the firm's output risk. This explanation may help to clarify the apparent conflict with the previous literature. The relationship between systematic risk and monopoly power is rederived and shown to depend upon a plausible condition on the correlation between wage rate and price uncertainty. Finally, the public policy implications of this analysis are presented.     

On the exclusion of assets from tests of the two-parameter model: A sensitivity analysis

This study investigates the sensitivity of tests of the CAPM to different sets of asset returns. Tests are conducted with market portfolios that include returns for bonds, real estate, and consumer durables in addition to common stocks. Even when stocks represent only 10% of the portfolio's value, inferences about the CAPM are virtually identical to those obtained with a stocks-only portfolio. In contrast, inferences are sensitive to the set of assets used in the tests.     

Market rationality and dividend announcements

We investigate stock market rationality by examining the timeliness and unbiasedness of the market's response to dividend announcements. Our initial findings for market timeliness show a sluggish market reaction to dividend announcements; however, when the ex-dividend effect is controlled for, we find no evidence of a sluggish market reaction. We examine the unbiasedness of the market's response by testing whether the net announcement effect across a sample that is devoid of ex-post selection bias sums to zero. We observe a significant positive net announcement effect and examine several plausible conjectures for this puzzling phenomenon, but none provides a satisfactory explanation.     

The Recovery Theorem

We can only estimate the distribution of stock returns, but from option prices we observe the distribution of state prices. State prices are the product of risk aversion—the pricing kernel—and the natural probability distribution. The Recovery Theorem enables us to separate these to determine the market's forecast of returns and risk aversion from state prices alone. Among other things, this allows us to recover the pricing kernel, market risk premium, and probability of a catastrophe and to construct model‐free tests of the efficient market hypothesis.     

Bond indenture provisions and the risk of corporate debt

This paper examines the effect of alternative bond indenture provisions on the allocation of risk among the firm's claimants. The approach taken here differs from that of earlier studies in that risk allocation is examined while the firm's leverage (in market value terms) is held constant. In this context, four indenture provisions are examined: (1) the time to maturity, (2) the promised payment schedule, (3) financing restrictions and (4) priority rules. It is concluded that risk is transferred from stockholders to bondholders as the time to maturity and promised payment increase appropriately. Furthermore substitution of longer-term debt for an equal amount of shorter-term debt also increases the risk to bondholders while decreasing the risk to stockholders. The analysis shows that a coupon bond can be represented by a unique discount bond with the same risk and value. This permits the characterization of the effective maturity of a risky debt issue, a concept analogous to the stochastic duration of a default-free coupon bond. These results are shown to be independent of the means used to finance the debt issue. Finally, it is concluded that the relative risk associated with different bonds issued by the same firm cannot be determined by the structure of priority rules alone. It is also necessary to consider the timing of the promised payments compared to that of the other debt issues in the firm's capital structure.     

Bankruptcy,absolute priority,and the pricing of risky debt claims

In practice, there are substantial deviations from the doctrine of ‘absolute priority’, which governs the rights of the firm's claimholders in the event of bankruptcy. To determine whether or not the possibility of such deviations is reflected in the prices of the firm's securities, this study examines the risk and return characteristics of financial claims against firms in court-supervised bankruptcy proceedings. Debt claims against bankrupt firms are indeed ‘risky’, exhibiting levels of systematic risk similar to that of common stocks in general. While some of the findings are anomalous, the data are generally consistent with the view that the capital market ‘properly’ prices risky debt claims to reflect both their risk characteristics and the possibility of departures from the doctrine of absolute priority.     

The effect of asymmetric information on product market outcomes

We explore how asymmetric information in financial markets affects outcomes in product markets. Difference-in-difference tests around brokerage house merger/closure events (which increase asymmetric information through reductions in analyst coverage) indicate worse industry-adjusted sales growth for shocked firms than for their peers. Our results are consistent with Bolton and Scharfstein's (1990) tradeoff between investor agency concerns and predation risk. Further support is found in stronger treatment effects among firms with ex ante greater agency concerns, financing constraints, asymmetric information, and those operating in ex ante more competitive (fluid) product market spaces. Our results are concentrated in industries where we can clearly identify either net firm entry or exit.     

The pricing of the prime rate

The prime business loan rate has become widely viewed as one of the chief barometers of credit market conditions, yet we know little about how this rate is determined. The objective of this paper is to attempt to further our understanding of the prime rate through an analysis of recent prime rate movements in order to determine if the prime reacts immediately to changes in money market conditions, as would be the case of a competitively-determined price, or whether the prime demonstrates properties of an oligopolistic price. The empirical findings contained herein appear to support the hypothesis that the prime rate is an average of a bank's cost of its currently- and previously-issued, but still outstanding, managed liabilities. This type of pricing minimizes the interest rate risk in the bank's balance sheet and facilities coordination and discipline in an oligopolistic market. Furthermore, it also appears that banks may be using the prime rate in conjunction with below prime lending to price discriminate between customers on the basis of whether these customers have alternative channels of short-term financing.     

Testing the CAPM with broader market indexes: A problem of mean-deficiency

This study addresses a problem that can arise when a broader market index is used to test the CAPM: a return series used in the index can exclude part of an asset's return. If the excluded return is constant, then a test of mean-variance efficiency can be constructed, but an additional parameter must be estimated. This point is illustrated in tests with both broader market indexes and stocks-only indexes. The broader indexes exclude the rental return on real estate and durables. The excluded rental return is estimated under the assumption that the index portfolio is mean-variance efficient.     

Portfolio performance manipulation in collateralized loan obligations

We examine the discretionary activities that CLO managers engage in to pass monthly overcollateralization (OC) tests. These tests require a CLO's loan portfolio value, scaled by the CLO notes’ principal balance, to be above a certain threshold. Using CLOs’ granular disclosures, we develop model-free estimates for discretionary loan fair valuation and transaction-based proxies for strategic loan trading. We find a positive association between these discretionary activities and the probability of avoiding an OC test violation. This association varies predictably with junior noteholders’ influence and CLO market conditions. Strategic trading—but not discretionary fair valuation—relates to worse future CLO performance.     

On the independence of transactions on the New York Stock exchange

This paper presents empirical tests of a model of intraday transaction price walks haveior events both the existence of price reversal's in transaction price sequence with random, New York daily. and longer different intervlas. In genral, we find that trasaction of independ events both with respect to their time execution and the siem and (bid or ask) or whick thaye are executed. Over very short intervals times, however, transapction tend to cluster in time and on a particular side of the market. We conjecture that this latter phenomenon is a consequence of market procedures on the New York Stock Exchange.     

The economic determinants of the market reaction to proposed mandatory accounting changes in the oil and gas industry: A cross-sectional analysis

This paper examines the economic reasons for the observed negative abnormal common stock performance of firms whose reported earnings and stockholders' equity were negatively affected by the proposed elimination of full cost accounting in the oil and gas industry. Four explanations of the market effects of this mandatory accounting change are examined: (1) naive investor theory, (2) modified naive investor theory, (3) contracting cost theory, and (4) estimation risk theory. These hypotheses are developed in detail and used to generate variables for a cross-sectional model which explains observed return behavior. The effect of the accounting change on total stockholder's equity, the existence of financial contracts denominated in terms of accounting numbers and, to a lesser extent, firm size are shown to be important explanatory variables. The importance of these variables is consistent with both the contracting cost and estimation risk theories.     

Cash demand,liquidation costs and capital market equilibrium under uncertainty

In this paper, the portfolio and the liquidity planning problems are unified and analyzed in one model. Stochastic cash demands have a significant impact on both the composition of an individual's optimal portfolio and the pricing of capital assets in market equilibrium. The derived capital asset pricing model with cash demands and liquidation costs shows that both the market price of risk and the systematic risk of an asset are affected by the aggregate cash demands and liquidity risk. The modified model does not require that all investors hold an identical risky portfolio as implied by the Sharpe-Lintner-Mossin model. Furthermore, it provides a possible explanation for the noted discrepancies between the empirical evidence and the prediction of the traditional capital asset pricing model.     

The demand for and supply of deposits by credit unions: The Caisses populaires' case

The aim of the study is to explain Quebec major credit union's deposit market by way of intergrating its public demand function with the institution's rate-setting operation. The demand for Caisses' deposits is specified as a dynamic stock adjustment model. On the other hand, the intermediary's rate-setting reduced form is derived from a risk-return portfolio balance model which the managers maximize the expected utility of reserves. The two models are integrated by means of a liability composite rate. Econometric estimates of the integrated model provide us with interesting policy insights. For instance, the Quebecois public views chartered banks' deposits as a weak substitute for Caisses' deposits; it is also more responsive to non-rate arguments, such as loan eligibility or the institution's ethnic appeal. On the supply side, competitive liability rates are more important than returns on assets when the Caisses set its deposit rate. Finally, the impact growth imbalance between loans and deposits is well captured by a flow variable, without infringing on the steady-state determination based on rates.