THIN TRADING AND THE ESTIMATION OF BETAS: THE EFFICACY OF ALTERNATIVE TECHNIQUES

Infrequent trading induces biased estimates of the beta risk coefficient. This paper reports on the efficacy of approaches that seek to correct for this bias and documents the extent of thin trading among New Zealand securities. Parameter estimates free of the thin-trading bias are obtained. These are compared with estimates obtained using ordinary least squares (OLS) applied in the conventional manner to nonsynchronous data, with and without bias-correcting procedures. OLS beta estimates are found to be less biased, more efficient, and as consistent when compared with Dimson or Scholes-Williams estimators. Lower beta estimates are associated with lower trading frequencies.     

THE ACCURACY OF CASH FLOW ESTIMATION PROCEDURES

Prior research uses mechanical procedures to estimate cash flow data. This study examines the accuracy of these procedures by measuring errors between estimated cash flows and reported cash flows. The results indicate that mechanical rules provide poor estimates for reported cash flows. We also show that the errors between cash flow estimates and reported cash flows can be reduced by adjustments made from footnote disclosures. However, large errors remain, even after adjustments are made from footnote disclosures. These remaining errors are correlated with firm specific characteristics such as sales (firm size), extraordinary items, foreign currency gains and losses, and changes in inventory.     

ALTERNATIVE TESTS OF THE ZERO‐BETA CAPM

In this paper I develop an analytical Wald test of the zero‐beta capital asset pricing model (CAPM) in a simple iid (independent and identically distributed) setting and extend the Wald test to the generalized method of moments (GMM) framework that allows for a general form of serial correlation and conditional heteroskedasticity. The size and power of these tests, along with some existing tests, are investigated under normal errors and other alternative distributional specifications. The results show that, under alternative distributional assumptions for the error terms, the proposed Wald and GMM tests have reliable sizes for medium‐size samples, whereas the likelihood ratio test (LRT) rejects the efficiency too often, especially when the error terms significantly deviate from normality. However, the LRT is more powerful than both the Wald and GMM tests. JEL classification: C13, C53, G14.     

A BIAS-CORRECTING PROCEDURE FOR BETA ESTIMATION IN THE PRESENCE OF THIN TRADING

In this paper, an alternative technique is developed for obtaining consistent estimates of beta in the presence of thin trading. The new estimator is tested on simulated data and the results are compared with those obtained from the Dimson [ 4 ] Scholes and Williams [ 9 ] techniques. The new estimator is found to have approximately the same bias as the others, but it has a considerably lower variance.     

FIRM PERFORMANCE AND SECURITY TYPE IN SEASONED OFFERINGS: AN EMPIRICAL EXAMINATION OF ALTERNATIVE SIGNALING MODELS

In this paper we examine the long-term performance of publicly traded firms that issue straight debt, convertible debt, or common stock. Declines in firm performance following issuance are consistent with declines in firm value at announcement and issuance, and suggest that convertible debt and common stock are substantially equivalent. This study is consistent with the pecking-order and Miller-Rock models, but inconsistent with the leverage-signaling model. Despite a significant decline following issuance, firms issuing common stock or convertible debt perform better, on average, than the industry before, at, and after issuance. This is consistent with younger, riskier, higher-growth firms being the predominant issuers of common stock and convertible debt.     

THE OPERATING BETA OF A U.S. MULTI-ACTIVITY FIRM: AN EMPIRICAL INVESTIGATION

Various researchers have decomposed the firm's beta (or systematic risk) into components that are reflective of the firm's corporate characteristics, for example, leverage position, product mix, etc. In this paper, the theoretical beta decompositions of Hamada (1969 and 1972) and Rubinstein (1973) are sub- jected to empirical examination for a sample of diversified (or multi-activity) firms. The results of the analysis evidence highly significant empirical support for the Hamada- Rubinstein model and for the viability of operationalizing that model with available accounting and market data.     

THE IMPACT OF AGRICULTURAL EXTENSION: THE TRAINING AND VISIT SYSTEM IN INDIA

This article reviews the rationale for public sector involvementin the dissemination of technological information to farmers,concluding that free markets do not fully satisfy farmers' informationneeds, and that government support is justified. Agriculturalextension is a principal way that governments can disseminateinformation, and the World Bank is financing many extensionprojects throughout the developing world. One specific approachto extension adopted in many Bank extension projects is theTraining and Visit (T&V) system. Data from a Bank-sponsoredsurvey in northwest India and from monitoring and evaluationreports issued by several Indian states are used in this articleto evaluate T&V extension operations and their impact. Extensionagents' interaction with farmers is found to be more intensiveand more significant as a source of information in areas coveredby T&V extension than in areas with a different extensionsystem. The yield levels of farmers whose main source of informationwas the T&V extension agent are also shown to be higher.In one case study, the incremental investment in T&V extensionis shown to be likely to generate at least a 15 to 20 percentrate of return.      

INTEREST RATE HEDGING: AN EMPIRICAL TEST OF ALTERNATIVE STRATEGIES

For hedging, financial and agricultural futures contracts differ in their usefulness. This paper presents a new hedging approach uniquely appropriate to financial futures that better fits the typical hedging situation confronted by those wishing to hedge interest rate risk. The superiority of this new hedging strategy is demonstrated empirically by comparing the strategy with several other methods currently in use.