Vol. 12, No. 2
An ethical investments evaluation for portfolio selection
The Socially Responsible Investing (SRI) is an assets allocation, whose aim is to maximize not only the portfolio expected return but the benefits for a consumer who as a whole operates according to the ethical principles. The wealth of a market economy is to cross the different ethical identities of families, of enterprises, of banks, in order to improve the allocation of the resources for a sustainable development. In this paper, we aim at describing the portfolio selection realized on the basis of the ethical principles - positive /negative, inclusionary/exclusionary - of an investor. The first part of this paper describes Socially Responsible Investing (SRI) and ethical funds market in the world; the second part builds an ethical index as evaluation of the coherence of the ethical principles of the investor in comparison with the ethical principles respected in the investment. The paper also illustrates the set of admissible portfolios for an ethical investor, obtained on the basis of the following indexes - of risk, of expected return and of ethicality.
Socially responsible investing, ethical screening, portfolio theory
Evidence from psychology, game theory, anthropology and contingent valuation surveys reveals a more complex pattern of decision-making than that described by neoclassical utility theory. In this paper, we aim at describing the portfolio selection realized on basis of ethical principles, that is on basis of investment quality - in order to know, for instance, the production of the income and the coherence of the destination of the funds to the sustainable development.
The Selection Portfolio Theory consists in the allocation of a capital among n possible investments, and is divided into two phases:
For the first phase, a static model can be enough; for the second, a dynamic model is opportune due to information and transaction costs. In this paper we're going to analyse the first phase. The most meaningful results - both theoretical and practical - of the Portfolio Theory comes from H. Markowitz approach (1959). In comparison with Tobin, Markowitz gives a theoretical interpretation of the behaviour of a subject, who is rational and adverse to the risk, and individualizes the class of the efficient portfolios.
On the basis of the different inclinations of the subject, such an approach individualizes an optimal portfolio. In the Markowitz model, the assets diversification in the portfolio is the tool used to reduce the risk, without penalizing the return too much. The Socially Responsible Investing (SRI) consists in the selection and/or the management of the investments (shares, bonds) realized on the basis of ethical positive/negative (of inclusion and/or of exclusion) screening. Within the Modern Portfolio Theory, this paper aims at illustrating a third index - besides the expected return and the risk - an ethical index, that quantitatively expresses the coherence of the ethical values of the subject compared to the ethical values respected by the asset.
Therefore, we are going to describe the diffusion in the world of the SRI; we intend to propose an evaluation of an ethical investment and of a portfolio by the building of an ethical index. Finally, we show how the set of portfolios changes for an investor, who is rational, ethical and adverse to the risk, in comparison with the formulation of the Modern Portfolio Theory.
2. The Socially Responsible Investing (SRI)
The SRI phenomenon is provoking above all a change of the enterprises and consumers. SRI attracted the attention of the main banks and asset management firms in the world: they have seen ethical investments as new ways to attract investors. Ethical products have the same characteristics as existing financial products, with an important difference in qualitative aspects, such as the objective of investments, the respect of social and environmental principles, the transparency in management, etc. Financial funds invested in ethical funds can be allocated according to three different criteria:
Screening is the inclusion or exclusion of stocks and shares in unit trusts, investment trusts or other investment portfolios on ethical, social or environmental grounds. Ethical screening is usually divided into "negative" screening to exclude unacceptable shares from the portfolio, and "positive" screening to select companies with superior social or environmental performance.
Shareholders' advocacy is the process of using shareholder influence to help to bring positive social and environmental change to corporations. Proxy resolutions on social issues are generally aimed at influencing corporate behaviour toward a more responsible level of corporate citizenship, steering management toward action that enhances the well-being of all the company's stakeholders, and improving financial performance over time.
Community Investing - also known as social venture capital - is the investment of money into community development or micro-enterprise initiatives that contribute to the growth and well-being of particular communities and/or environmental concerns.
The most common is, so far, the screening criteria which involve an ethical evaluation of the investment object. Both the exclusionary and positive screens are shown in the following tables:
Source: Avanzi/SiRi Group in cooperation with CSR Europe, 2002
The attribution of a different priority to one criteria more than another only depends on investor principles. Furthermore, while the existence of a negative criteria automatically exclude a company (or asset), the absence of a positive criteria can be balanced by other considerations. Such considerations are of fundamental importance in the ethical evaluation function, that builds the ethical index of portfolio (section 4). The variables to be taken into account are numerous, and an ad hoc selection, on the basis of the ethics of the client, is impossible. The ethical market is supposed to split: every religion in America has its codes of ethical selection of the investment.
Before building financial products, it is necessary to understand the ethical identity and the objective function of the investors, since the wealth of a market economy is to cross the different ethical identities of families, of enterprises, of banks, in order to improve the allocation of the resources for a sustainable development.
3. The market of ethical funds
The transparency, for the socially responsible products market, is still weak and confusion between screened funds or assets and humanitarian funds or assets is still strong. There is a fundamental difference between ethical funds and humanitarian funds:
- Ethical asset portfolios invest socially responsible, a company should have all these characteristics;
- Humanitarian funds, also known as devolution funds, are those where the investor give up to a part or all the profit to community or solidarity activities.
Humanitarian funds cannot be considered ethical funds because, according to prevailing opinion, it is just an indirect form of donation that doesn't give to investors responsibility for the way money is used in the investment process. Worldwide financial markets are able to generate huge crises, but they could also been seen as the main channel to create a new way of making finance.
This section describes the diffusion of ethical funds throughout the world.
The American market is the market leader in ethical investment: 18% of all new funds collected by asset management companies is invested in SRI1, Europe is growing and the data released confirm this trend. There is an important analysis, done by the Italian rating agency Avanzi2, that shows the state of ethical funds in Europe. The report is the result of collective research carried out during the year 2002 by organisations belonging to the Sustainable Investment Research International (SiRi) Group, a worldwide coalition of local research organisations devoted to the advancement of socially responsible investing.
SiRi Group members that participated in the project are: Avanzi covering Italy, Caring Company covering Sweden, Denmark, Finland, Norway, Poland, Centre Info Suisse covering Switzerland, Fundacion Ecologia y Deasarrollo covering Spain and Portugal, PIRC - Pensions & Investment Research Consultants covering the United Kingdom, Scoris covering Germany and Austria, Stock and Stake / Ethibel covering Belgium and Luxembourg and Triodos Research, covering the Netherlands.
Other SiRi Group members that did not take part in the project (mainly due to its geographical scope) are: KLD - Kinder, Lydenberg & Domini & Co., Inc. (United States), MJRA - Michael Jantzi Research Associates (Canada) and SIRIS (Australia).
The project has also been promoted and supported by CSR Europe, a business driven membership network of 60 companies whose mission is to place Corporate Social Responsibility (CSR) in the mainstream of business practice and by Euronext, the company who manage the Stock Exchange of Paris, Brussels and Amsterdam.
The funds considered in this report3 should all:
Any fund has to meet all of these conditions in order to be eligible for the analysis.
Therefore the research does not take into account:
Here follow some indicative data on the growth of the ethical market.
From the Green, Social and Ethical Funds in Europe 2001, a growth rate emerges that is particularly interesting when considering the reference period coincides with a difficult period for asset management and financial investment activities throughout Europe. Socially responsible investments can therefore be considered to be one of the most dynamic and rapidly growing activities in the investment funds industry with an increase of more than 30%: from €11,1 million in 1999 to 14,9 by the end of 2001.
On 31 December 2001 there were 280 green, social and ethical funds operating in Europe, a +78% increase in the 24-month period since the end of 1999, as shown in the graph below.
The comparison between assets of SRI funds and the total asset managed in European funds (UCITS funds, as defined in the European legislation), shows that SRI funds are still a very small portion of all funds in Europe, and the assets under management are just 0.43% of the total asset managed by UCITS funds.
Percentage of assets managed by SRI funds compared to those managed by non SRI funds in selected countries (at June 30, 2001)
Source: Green, Social and Ethical Funds in Europe 2001, SiRi Group
Assets under management and growth rate for the European funds (mlns € at June 30, 2001)
We are going to complete the first part of the introduction to the SRI, proposing to the reader some questions:
- The choices of ethical investors affect the behaviour of the enterprises?
- This behaviour could lead to an abandonment of the non coherent productions with a such as: fiscal facilitations for productions, management and ethical certifications and/or taxations sustainable development (and to a consequent cost of the lowest capital), also following government provisions on productions that do not promote the sustainable development?
- The increasing attention of the firms to a sustainable development could be a new form of marketing?
- The job of ethical committees for the control and the certification of the ethicality of the investments - is it accurate? What is its cost? to whom is it charged?
Following these considerations, the section 4 of this paper describes the decisional path of a subject who allocates resources on ethical investments.
4. An ethical investments evaluation
In recent years, attention has been drawn to some of the earlier controversies in utility theory due to questions about environmental, armaments, human rights violations, Genetically Modified Organisms (GMO) in agriculture evaluation based on neoclassical axioms of consumer choice - in particular the contingent evaluation method by some economists (see Stigler and Becker, 1977; Becker, 1996; most contemporary microeconomists, for examples see van den Bergh et al., 2000). We are aware of the rich body of theories extending neoclassical utility theory to include interpersonal comparison of choice, altruism, lexicographic preferences, and other phenomena of human behaviour. We argue that these axioms of consumer choice do not confirm the accepted models of human behaviour verified after experimental and theoretical work in economics, psychology, anthropology and game theory.
The neoclassical utility theory ignores the biological basis of human existence. In standard theory, ethical needs are indistinguishable from whims of consumer choice. In a survey of the contributions of environmental psychology, economics and environmental philosophy to the debate about the human evaluation of nature, Lockwood (1999) concludes that when non-compensatory preferences are present (meaning that a change in one alternative cannot be compensated by a change in another alternative) a multifaceted evaluation framework is necessary.
Much of the criticism of neoclassical economics is directed at the notion that humans are rational calculating individuals. The methodological individualism of consumer choice theory systematically ignores the hierarchical nature of social and ecological systems when preferences and utility are aggregated within social systems.
5. Conclusions and future directions
Predictions based on the axioms of consumer choice have proved to be less accurate than those based on more realistic assumptions of human behaviour (Gintis, 2000, chapter 11). Game theoretic models of altruism, for example, are proving to be better predictors of human behaviour than models based on the axioms of consumer choice (Friedman, 1991; Bergstrom and Stark, 1993; Bowles and Gintis, 1997; Bohnet and Frey, 1999; Gachter and Fehr, 1999). Economic journals now routinely publish papers questioning the standard characterization of human nature, the standard representation of economic production, and even the standard assumption of growth as progress.
These considerations, drawn by the economic literature, together to the growth of the offer and the variety of ethical financial products have encouraged our study. The purpose of the paper is to describe the subjectivity and the differentiation of the portfolio selection, in basis to the ethical principles of the subject, through the construction of an ethical index.
In other terms, this paper describes the evaluation process of the ethical characteristics of financial products from an investor having his ethical system. Besides this paper describes the different regions of portfolios, in basis to ethical evaluations, and shows that the ethical investor choices are more articulate: can belong to Preference, Non-Preference or Hesitation Regions, but also can belong to Not-Ethical Preference or Ethical Preference Regions.
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1 Di Turi A., Fondi etici +1: parte Zenit Etico & Ricerca, Eticare, 23 October 2002.
2 Avanzi, from 1997, is a research consultancy company centre for the promotion of innovative tools for environmental, economic and social sustainability. It is the first Italian company to develop social and environmental rating of Italian quoted companies (MIB 30 index) and other listed companies in North America. Europe and Japan.
3 see: Green and ethical funds in Europe 2001.
4 UCITS stands for Undertaking for Collective Investment in Transferable Securities which is a collective investment fund that complies with the EU UCITS Directive N° 85/611/EEC of 20 October 1985 (OJ L 375/3 of 12-31-1985) and consequently can be marketed in all EU countries.
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