The Effect of Corporate Merger Transactions on the Information Content of Earnings Announcements*

Abstract. This study develops and tests the proposition that corporate merger transactions give rise to changes in the association between firm accounting earnings and security returns. A model of the effect of merger transactions on stock price responses to information releases suggests that the earnings response coefficient of a postmerger entity is a weighted average of the earnings response coefficients of the combining firms, with the weights depending on relative earnings variability of the combining firms. Empirical results, based on a sample of 90 mergers completed over a 12-year period, are consistent with the model. Résumé. L'auteur élabore et vérifie une proposition selon laquelle les opérations de fusion donnent lieu à des changements dans la relation entre les bénéfices comptables de l'entreprise et le rendement de ses titres. Selon le modèle de l'incidence des opérations de fusion sur la réaction du cours des valeurs mobilières à la communication d'information, le coefficient de réaction des bénéfices d'une entité résultant d'une fusion est la moyenne pondérée des coefficients de réaction des bénéfices des entreprises qui fusionnent, les pondérations dépendant de la variabilité relative des bénéfices des entreprises constituantes. Les résultats empiriques, fondés sur un échantillon de 90 fusions s'échelonnant sur une période de plus de 12 ans, confirment la validité du modèle.     

Hours of Part-Time and Full-Time Workers at the Same Firm

Nearly half of all firms hire both part-time and full-time workers. This note uses the results of a unique survey of more than 5,000 establishments to examine the ratio of part-time weekly hours to full-time weekly hours at firms employing both types of worker. The distribution of relative hours appears fairly stable across industries, Regression analysis shows that higher quasi-fixed labor costs increase the ratio of part-time to full-time hours, although the effect is empirically small.     

FAMILY LIFESTYLE AND ENERGY CONSUMPTION: AN ENERGY ADAPTATION MODEL*

The premise of the paper is that family energy consumption is a consequence of family lifestyle. To facilitate the development of policies that allow families to make satisfactory lifestyle choices as energy resources decline, we explore in detail the relationship between family lifestyle and energy consumption. A model is developed to illustrate the decision making processes that link individual and family behaviour patterns with energy consumption. A series of propositions is derived from the model that relates family values, family effectiveness and family decision making to energy prices, energy conservation adoption, attitude formation and family lifestyle changes. The model can be used by public and private decision makers to identify research and consumer information programs that will facilitate adoption of more energy efficient lifestyles.     

Volume,Volatility, and New York Stock Exchange Trading Halts

Trading halts increase, rather than reduce, both volume and volatility. Volume (volatility) in the first full trading day after a trading halt is 230 percent (50 to 115 percent) higher than following “pseudohalts”: nonhalt control periods matched on time of day, duration, and absolute net-of-market returns. These results are robust over different halt types and news categories. Higher posthalt volume is observed into the third day while higher posthalt volatility decays within hours. The extent of media coverage is a partial determinant of volume and volatility following both halts and pseudohalts, but a separate halt effect remains after controlling for the media effect.