The reaction of Canadian securities to revisions of earnings forecasts*

Abstract. This first study of Canadian securities' earnings forecasts published by Institutional Brokers Estimate System (IBES) focuses on changes in the mean earnings per share forecasts of 159 to 188 companies from 1985 to 1987. Cumulative average residuals are used to detect the announcement effects of large earnings forecast revisions. The main results of this study are the following. First, an investor with access to changes of earnings per share forecasts at the beginning of the month of publication could realize abnormal excess returns. Second, trading strategies based on earnings forecasts revisions can also yield abnormal returns, but the magnitude of the revision, the sector of the company, and the month in which the revision is realized must be considered. Third, when financial analysts' forecasts are published, the informational content of large revisions in forecasts has already been discounted by the market. This result is similar to findings of U.S.– and U.K.–based studies. Finally, large forecasts revisions coincide with a period of abnormal returns. However, the information content of the announcement of forecasts changes cannot be established. The gains are larger if the trade is undertaken before the diffusion of the forecast revision to the IBES subscribers. These results do not vary with the model chosen to predict company returns. This does not necessarily indicate the existence of a market inefficiency because information acquisition and analysis costs, as well as transaction costs, may diminish considerably these abnormal trading gains.     

Some evidence on the gains from international diversification for Canadian investors

It is easily demonstrated ex post that international portfolio diversification results in increased returns and reduced risk. However, to determine the value of international diversification as an effective portfolio management strategy, it is necessary to form portfolios based on information available at the time of their composition, and then evaluate the performance of the portfolio in the following months. This is the main focus of our study, which adds several innovations to past research. First, we use daily rates of return on 23 national indices to evaluate the value of international diversification for a Canadian investor. Second, we evaluate the predictive value of the historical variance-covariance matrix vis-à-vis alternative models. Third, we use the Bayes-Stein correction to reduce errors in the historical return vector. Finally, we use a quadratic programming model in order to introduce the effects of constraints on the optimisation process. The results, obtained over the 1986–1989 period, are not in favour of international diversification. Returns on diversified portfolios were often lower than returns on the low-risk Canada market during the low-performance portfolio test periods. In other cases, higher returns on diversified portfolios could not be justified by their higher volatility. It is possible that these results may be partially due to the effects of the market crash in October 1987. Nevertheless, our study brings up many directions for future research. Is international diversification in fact profitable? Is portfolio optimisation appropriate in an international context? Finally, what is the best way to estimate the expected return vector in various markets?     

Is the Chinese Economy Moving in the Direction of Tertiarization？

Drawing upon output, employment, consumption and trade data, this article examtnes whether there is an economic tertiarization trend in China ＇s economy and evaluates the common factors driving current trends. It shows that the tertiarization trend is evident for the overall economy and most regions in terms of the service nominal value-added ratio and service employment and consumption. However, the tertiarization trend is not significant in terms of the service real value-added ratio, and there is even some concurrent ＂detertiarization ＂ because of the decreasing proportion of services in imports and exports. lndeed, China ＇s tertiarization trend is far behind its industrialization trend The rise in the relative prices of services explains the rising proportion of household service consumption expenditure and further illuminates why the service real value-added ratio has not grown. The main cause for the growing percentage of service employment is the lag in service labor productivity growth in interaction with the price inelasticity of service demand ＂Cost disease ＂ has appeared in service consumption.     

Optimal environmental taxation and enforcement policy

We study the optimal environmental taxation and enforcement policy when (i) the regulator does not know the firms’ abatement costs, (ii) penalties for tax evasion are limited, and (iii) monitoring of pollution is costly. We show that the threat of being audited alter the usual firms’ incentives to over-estimate their abatement costs. In particular, depending on the firms’ abatement costs, the optimal policy may involve over or under-deterrence compared to the full information outcome. We then investigate the properties of a pollution standard. We show that this policy comes close to an environmental tax once the economic incentives of the accompanying enforcement policy are considered.     

The empirical content of the job search model: Labor mobility and wage distributions in Europe and the US

Job search models of the labor market hypothesize a very tight correspondence between the determinants of labor turnover and individual wage dynamics on one hand, and the determinants of wage dispersion on the other. This paper offers a systematic examination of whether this correspondence is present in the data by estimating a rudimentary partial equilibrium job search model on a 3-year panel of individual worker data covering 10 European countries and the U.S. We find that our basic job search model fits the data surprisingly well. This also allows us to point at a number of interesting empirical regularities about wage distributions. Our results suggest that cross-sectional data on individual wages contain the basic information needed to obtain a reliable measure of the “magnitude of labor market frictions”, as measured by a parameter of the canonical job search model. Finally, we use our results in a cross-country comparison of the intensity and nature of job-to-job turnover. We arrange countries into two different groups according to their turnover intensity. We further show that the nature of job-to-job turnover is very different between those two groups: Turnover is predominantly voluntary in low-turnover countries, whereas it is to a large extent involuntary in high-turnover countries.     

The Geopolitics of China’s Maritime Silk Road Initiative

China’s “One Belt, One Road” project is comprised of two components: the Maritime Silk Road Initiative (MSRI) and the Silk Road Economic Belt (SREB)—that were announced separately in 2013. Each component has the potential to transform the global geopolitical landscape through the construction of interrelated infrastructure projects including ports, highways, railways and pipelines. Such hard infrastructure requires the complementary construction of soft infrastructure, such as free trade and investment agreements, and other accords. We introduce a special section focusing specifically on the geopolitics of the MSRI that stems from a workshop hosted in November 2015 in Shanghai. The origins, scope and content of the MSRI are described, along with a summary of the current literature discussing the project, and dominant geopolitical representations. The MSRI is a geopolitical project that involves a number of actors (governments, private companies and Chinese state-owned enterprises) at a number of geographic scales (cities, provinces, states and continents). Arrghi’s twin logics of territorial and economic power help frame and connect the papers of the special section to illustrate the complexity and dynamism of the geopolitics of the MSRI. The articles provide insights into the geopolitics of a large connectivity project.     

Coherent Measures of Risk

In this paper we study both market risks and nonmarket risks, without complete markets assumption, and discuss methods of measurement of these risks. We present and justify a set of four desirable properties for measures of risk, and call the measures satisfying these properties "coherent." We examine the measures of risk provided and the related actions required by SPAN, by the SEC/NASD rules, and by quantile-based methods. We demonstrate the universality of scenario-based methods for providing coherent measures. We offer suggestions concerning the SEC method. We also suggest a method to repair the failure of subadditivity of quantile-based methods.     

A Distance-Based Collective Weak Ordering

A group decision-making approach can be seen as a two stage process. The first stage allows for multi-cirteria evaluation of the alternatives and the second aims at deriving a collective weak ordering from the partial orderings supplied by the members after the first stage. The problem of combining the weak orderings to form a collective ranking is investigated. An axiomatic structure relating to the concept of distance between binary relations is developed. An algorithm for deriving the collective weak ordering is proposed, based on the idea of ranking first the least dominated alternatives.