Positive (or affirmative) screening means that rather than excluding companies, investors select companies that set positive examples of environmentally friendly products and socially responsible business practices. Unlike negative screens, which are generally more black and white, positive screens require an analysis of complex issues such as pollution, workplace practices, diversity and product safety.
Part of a positively screened investment portfolio may consist of smaller companies that have come up with innovative products that enhance the world’s sustainability. Examples are companies generating renewable energy, such as solar power, wind power, and hydrogen fuel cells; manufacturers of natural food and healthy living products; and companies involved in environmental clean-up and recycling.
A well-diversified portfolio also requires large and medium-sized companies. Larger companies, and the problems they face, are more complex. Positive screening can help determine which of these large companies are heading in a positive direction. Mutual funds and other institutions often use a ‘best-in-class’ approach to positively screen companies. This means that they can include a tobacco company that is showing leadership in its industry, despite the overall record of that particular industry.