Styles: from exclusion to impact

"Responsible investing" is an umbrella over several distinct styles that are often lumped together. Knowing which one a fund actually uses tells you far more than the label on the cover.

The main approaches

• Negative / exclusionary screening — the oldest approach. Simply refuse to own certain industries: tobacco, weapons, gambling, fossil fuels, thermal coal. Easy to apply, but blunt.
• Positive / best-in-class screening — instead of excluding whole sectors, pick the leaders within each sector by ESG score. A "best-in-class" energy fund might still hold oil companies — the better-run ones.
• ESG integration — fold ESG factors into ordinary financial analysis as one more input into risk and value, without hard exclusions.
• Thematic — invest around a theme such as clean energy, water, or gender diversity.
• Impact investing — the most demanding: invest specifically to generate measurable, intentional positive outcomes alongside a financial return, and report on those outcomes.

Sustainable/responsible investing vs impact investing

The key difference is intent and measurement. Most ESG and "sustainable" funds aim to manage risk or reflect values while still chasing market returns. Impact investing goes further — it sets out to cause a specific positive change (clean water delivered, tonnes of CO2 avoided, jobs created) and measures whether that change actually happened. All impact investing is responsible investing, but most responsible investing is not impact investing.

Why the distinction matters

A fund marketed as "sustainable" might do nothing more than exclude tobacco, or it might rigorously target measurable outcomes. The styles differ enormously in how much they actually change. Read the methodology, not the marketing.