Exclusionary screening, also called negative screening, is the practice of removing certain companies, industries or countries from an investment portfolio because of what they make or how they behave. Typical exclusions cover tobacco, controversial weapons, thermal coal, gambling and adult entertainment, but the list depends on the investor. It is the oldest and still one of the most widely used forms of sustainable investing, applied by religious investors, charities, pension funds, sovereign funds and retail mutual funds.
Screening sits alongside other ESG methods rather than replacing them. A best-in-class approach keeps every sector but picks the leaders, a positive tilt shifts weights without removing names, and ESG integration feeds ESG data into valuation. Exclusionary screening should not be confused with sanctions screening, which is a legal compliance check on customers and payments rather than an investment choice, although sanctioned issuers are excluded from portfolios as a matter of law.
Exclusionary screening in plain terms
Think of a family that does its weekly shopping with a short list of things it will never buy: perhaps cigarettes, or meat from a certain source. Everything else in the supermarket is fair game, and the family still chooses on price and quality. The list just takes a few aisles off the route.
An exclusionary screen is that list for an investment fund. Before the manager starts picking shares or bonds, the screen strikes out companies that cross a line the investor has set. The rest of the work carries on as normal. The line can come from religion, personal values, an international agreement, or a view that some industries carry risks the market is not pricing.
History of negative screening
Values-based exclusions began with faith communities. Methodist and Quaker investors in the eighteenth and nineteenth centuries avoided businesses tied to slavery, alcohol and gambling. In the United States, the Pioneer Fund, launched in 1928, is often cited as one of the first mutual funds to avoid alcohol, tobacco and gambling stocks. The Pax World Fund, founded in 1971 during the Vietnam War, became the first US mutual fund to apply social screens publicly, avoiding weapons makers.
Faith-based screening remains large today. Islamic finance applies screens derived from Sharia: equity funds exclude businesses in alcohol, pork, conventional banking and gambling, and also test financial ratios such as debt and interest income, because riba (interest) is prohibited. Any small non-compliant income is given away through income purification. Halal finance products use the same logic, and some Jewish and Christian investors apply their own screens.
Divestment campaigns turned screening into a political tool. In the 1980s universities, churches and US states sold shares in companies doing business in apartheid South Africa. Later campaigns targeted tobacco from the 1990s and fossil fuels from the 2010s. Boycott and divestment campaigns over Israel, such as the BDS Movement, use the same tool.
Types of screen
- Product or activity screens. These remove companies earning more than a set share of revenue from an activity, for example 5% or 10% from tobacco or thermal coal; some screens use zero tolerance for controversial weapons.
- Norms-based screens. These remove companies judged to breach international standards, such as the ten principles of the UN Global Compact or the OECD Guidelines for Multinational Enterprises. Norway's Government Pension Fund Global has had ethical guidelines and a Council on Ethics since 2004; in 2006 it excluded Wal-Mart Stores over labour-rights concerns.
- Country screens. These remove government bonds or companies from states under sanctions or with poor governance records.
- Climate screens. These remove fossil-fuel producers or high emitters, often linked to the goals of the Paris Agreement.
Rules and disclosure
Exclusions are usually written into a fund's investment objective and prospectus. In the EU, ESMA guidelines on fund names using ESG or sustainability terms have applied since 21 November 2024 for new funds and 21 May 2025 for existing ones; funds using such terms must meet an 80% threshold and apply minimum exclusions taken from the EU's Paris-aligned and Climate Transition benchmark rules, which cover controversial weapons, tobacco, companies breaching UN Global Compact or OECD principles and, for environmental names, certain fossil-fuel revenues. In the United States, the SEC's amended Names Rule requires an 80% investment policy for funds whose names imply ESG characteristics. In the UK, the FCA anti-greenwashing rule has applied since 31 May 2024.
Effects on returns and criticism
Removing part of the market narrows the investable universe and raises tracking error against a broad benchmark. Whether that costs or adds return depends on the period: excluded sectors such as energy and tobacco have had both strong and weak decades, and academic studies reach mixed conclusions.
Critics argue that selling shares has little effect on a company, because another buyer takes them, and that the investor gives up its vote and voice. That is why many managers pair limited exclusions with corporate engagement, and why bodies such as the PRI treat screening as one tool among several. Others note that revenue thresholds can be set loosely, letting funds market themselves as screened while still holding heavily exposed companies. Supporters reply that exclusion is clear, easy to check and lets investors align money with conscience, which for faith-based investors is the point.