An investigation of the weekend effect during different market orientations

Studies of stock returns over short horizons indicated irregularities in returns, the weekend effect, and consequently the notion of market efficiency has been questioned. Despite extensive research on the weekend effect, little research has been conducted to define the prominence of the seasonal anomaly in Bear markets versus non-Bear markets. In the paper the weekend effect is investigated for daily returns in the Dow Jones Industrial Average (DJIA), the S&P 500, and the NASDAQ for Bear and non-Bear markets. Results support a weekend effect but only during non-Bear market orientations and a possible day-of-the-week effect during Bear and non-Bear markets.     

Equity recognition of mandatory accounting changes: the case of transitional goodwill impairment losses

This study investigates if and how the use of the retroactive method to account for a mandatory accounting change affects a firm's measurement and recognition choices. We examine if reporting incentives and constraints are associated with the magnitude of transitional goodwill impairment losses reported by Canadian firms implementing Section 3062 on purchased goodwill. Our results indicate firms have an incentive to both overstate and understate transitional goodwill impairment losses. We also show that financially literate and independent audit committees constrain managerial opportunism. Copyright © 2008 ASAC. Published by John Wiley & Sons, Ltd.     

Agency theory and the influence of equity ownership structure on corporate diversification strategies

We articulate the agency theory view of managerial decision making and its implications for corporate diversification strategies. From agency theory, we generate testable predictions for the relation between equity ownership structure and diversification strategies and review the existing evidence on this relation. On balance, the evidence strongly supports the view that ownership structure influences corporate strategy. Copyright © 1999 John Wiley & Sons, Ltd.     

Mean square error for the Leland–Lott hedging strategy: convex pay-offs

Leland’s approach to the hedging of derivatives under proportional transaction costs is based on an approximate replication of the European-type contingent claim V _T using the classical Black–Scholes formula with a suitably enlarged volatility. The formal mathematical framework is a scheme of series, i.e., a sequence of models with transaction cost coefficients k _n =k ₀ n ^−α , where α∈[0,1/2] and n is the number of portfolio revision dates. The enlarged volatility [^(s)]_n\widehat{\sigma}_{n} in general depends on n except for the case which was investigated in detail by Lott, to whom belongs the first rigorous result on convergence of the approximating portfolio value Vⁿ_TV^{n}_{T} to the pay-off V _T . In this paper, we consider only the Lott case α=1/2. We prove first, for an arbitrary pay-off V _T =G(S _T ) where G is a convex piecewise smooth function, that the mean square approximation error converges to zero with rate n ^−1/2 in L ² and find the first order term of the asymptotics. We are working in a setting with non-uniform revision intervals and establish the asymptotic expansion when the revision dates are t_iⁿ=g(i/n)t_{i}^{n}=g(i/n), where the strictly increasing scale function g:[0,1]→[0,1] and its inverse f are continuous with their first and second derivatives on the whole interval, or g(t)=1−(1−t) ^β , β≥1. We show that the sequence n^1/2(V_Tⁿ-V_T)n^{1/2}(V_{T}^{n}-V_{T}) converges in law to a random variable which is the terminal value of a component of a two-dimensional Markov diffusion process and calculate the limit. Our central result is a functional limit theorem for the discrepancy process.     

A reconsideration of the link between vertical externality and managerial incentives

Previous research revealed that the strategic role of delegation contracts disappears if two quantity‐setting firms outsource input production to a monopolistic supplier. I show that this role is restored if the assumption of a downstream duopoly is relaxed. Thus, delegation contracts allow downstream profit‐maximizing owners to commit their firms to a behavior that differs from their preferences. This behavior varies nonmonotonically with the number of firms in the downstream market. Corresponding deviations from profit maximization are larger if the upstream monopolist makes a price precommitment. But little to no deviation occurs if the number of firms is large.     

An investigation into the financial characteristics of dividend initiating firms

Dividend announcements are said to have an informational content concerning the value of the firm. Most studies on dividend announcements have involved models to predict change or to analyze that informational content. The purpose of this study is to establish the financial characteristics of firms that initiate or significantly increase dividends. One hundred firms were selected for study. Fifty of the firms had recently either initiated or significantly increased dividends; the other fifty were selected at random. Significant differences were found in the financial characteristics of the two groups. The results were generally consistent with previous studies and finance theory. There were however, two genuine surprises. The dividend initiating firms possessed lower levels of liquidity and activity than firms selected at random. This suggests that dividends may not be paid to dispose of excess cash, but to provide shareholders with some tangible reward in periods of low liquidity and little activity.     

Bayesian inference for the mover–stayer model in continuous time with an application to labour market transition data

This paper presents Bayesian inference procedures for the continuous time mover–stayer model applied to labour market transition data collected in discrete time. These methods allow us to derive the probability of embeddability of the discrete‐time modelling with the continuous‐time one. A special emphasis is put on two alternative procedures, namely the importance sampling algorithm and a new Gibbs sampling algorithm. Transition intensities, proportions of stayers and functions of these parameters are then estimated with the Gibbs sampling algorithm for individual transition data coming from the French Labour Force Surveys collected over the period 1986–2000. Copyright © 2003 John Wiley & Sons, Ltd.