Negative Screening in Christian Investing: Principles, Practice, and Nuance

When most people think about faith-based investing, they think about negative screening—the practice of excluding companies from an investment portfolio because their business activities contradict Christian values. It’s the most ancient form of ethical investing: Quakers in the 18th century refused to invest in the slave trade; early Methodist investors excluded tobacco and alcohol companies from their portfolios; the modern Christian investing movement has built on this tradition with increasingly sophisticated screening frameworks.

But negative screening is more complex than simply “don’t own sin stocks.” The practical application involves difficult threshold questions, the problem of diversified conglomerates with mixed business lines, industry boundary disputes, and genuine theological disagreements about which industries warrant exclusion. This guide examines negative screening comprehensively—the biblical basis, the practical mechanics, the major categories of exclusion, and the genuine difficulties.

What Is Negative Screening?

Negative screening (also called “exclusionary screening”) systematically excludes companies from an investment portfolio based on their involvement in designated activities. In faith-based investing, these activities are those deemed inconsistent with biblical values or Christian ethics.

Negative screening is distinct from positive screening, which identifies companies to include based on values alignment, and from shareholder engagement, which maintains ownership of problematic companies in order to advocate for change from within. These three approaches can be combined, and many faith-based investors use all three, but negative screening is the most basic and widely practiced form of faith-aligned investment management.

The mechanics are straightforward: define the prohibited activities, determine the threshold of involvement that triggers exclusion, apply the screen to a universe of potential investments, and build the portfolio from remaining companies. In practice, this requires substantial research infrastructure to identify company revenues and activities across complex corporate structures.

The Biblical Basis for Negative Screening

The deepest theological foundation for negative screening is the principle that ownership carries moral responsibility. When you own equity in a company, you participate in—and benefit from—that company’s business activities. This participation is real, not merely abstract. Your ownership capital supports the company’s existence; your shares give you governance rights; your investment returns flow from the company’s business operations.

Scripture consistently addresses the ethics of commercial participation and guilt by association. Ephesians 5:11 instructs Christians to “have nothing to do with the fruitless deeds of darkness, but rather expose them.” Romans 1:32 extends moral responsibility beyond personal participation to those who “approve of those who practice” wrongdoing. 1 Thessalonians 5:22 calls Christians to “abstain from all appearance of evil.”

These passages don’t directly address stock ownership, but they establish a principle: Christians should be attentive to what they participate in and enable through their choices, including financial choices. The Quaker tradition that refused to profit from slavery was applying exactly this principle—recognizing that financial participation in an immoral enterprise is itself morally problematic, regardless of how indirect that participation may be.

The counterargument—that stock market ownership is so indirect that it carries no moral weight—faces a significant challenge: if it carried no moral weight, there would be no reason to care where your money is invested. The very existence of faith-based investing rests on the premise that what you own matters morally. Once you accept that premise, negative screening follows naturally.

Major Negative Screen Categories in Christian Investing

Abortion and Abortifacients

The most consistently applied exclusion in explicitly Christian investment funds is abortion. Companies excluded typically include:

• Pharmaceutical companies that manufacture abortifacient drugs (mifepristone/RU-486, Plan B in some fund frameworks, certain IUDs)
• Healthcare companies that own or operate abortion clinics
• Companies that make significant donations to abortion providers or abortion advocacy organizations
• Insurance companies that cover elective abortion (though this screen is less common due to the near-universality of such coverage)

The revenue threshold for exclusion varies. Some funds exclude any company with any abortion-related revenue; others apply a 5% or 10% revenue threshold, reasoning that diversified healthcare companies with minor abortion-adjacent exposure shouldn’t be categorically excluded.

Abortion screening is the most theologically motivated and carefully implemented screen in Christian investing—a direct expression of the conviction that human life begins at conception and that Christians shouldn’t financially participate in its termination.

Pornography

Pornography screening excludes companies that produce or distribute sexually explicit content. This includes:

• Adult entertainment companies (studios, distribution platforms)
• Cable and satellite providers that carry significant adult content channels
• Hotels that derive meaningful revenue from adult pay-per-view
• Some streaming services, depending on their content library

The pornography screen reflects multiple biblical concerns: the harm of sexual immorality (1 Corinthians 6:18–20), the violation of human dignity involved in pornography production and consumption, and the documented social harms (addiction, relationship destruction, trafficking connections) associated with the industry.

Practically, this screen is complicated by the ubiquity of sexual content in entertainment and the difficulty of distinguishing between mainstream adult content and explicit pornography at the company level. Fund managers typically focus on companies where pornography is a significant revenue driver rather than incidental content.

Gambling

Gambling screening excludes casino operators, online gambling platforms, state lottery administrators, and companies that derive significant revenue from gambling operations. Some screens also include ancillary gaming businesses—gambling software, gaming equipment—while others exclude only the operators.

The biblical concerns with gambling involve both the immediate harms (addiction, financial destruction, exploitation of the poor) and the broader character concerns around greed and reliance on chance rather than honest labor (see Proverbs 12:11; 13:11). Different Christian traditions weight these concerns differently, but the gambling exclusion is among the most broadly maintained in faith-based investing.

Tobacco

Tobacco screening excludes manufacturers and major distributors of tobacco products, including cigarettes, cigars, chewing tobacco, and increasingly e-cigarettes and vaping products. The biblical case rests on principles of caring for the body as a temple of the Holy Spirit (1 Corinthians 6:19–20) and concern for the harm tobacco does to human health and dignity.

The tobacco industry presents an interesting case study in screening philosophy: tobacco stocks were among the best-performing investments over the 20th century, driven by high profit margins, strong cash flows, and significant shareholder returns. Christian investors who maintained tobacco exclusions throughout this period did forgo significant returns—illustrating the genuine cost (not merely theoretical) of values-based screening.

Alcohol

Alcohol screening is more varied across Christian fund families than any other exclusion category, reflecting genuine theological differences among Christian traditions. Many evangelical and conservative Protestant funds exclude major alcohol producers. Catholic funds like Ave Maria generally do not apply an alcohol exclusion, reflecting the Catholic tradition’s neutral or positive view of alcohol in moderation. Mennonite-influenced funds like Praxis take varied approaches.

The biblical text is complex here: Jesus turned water into wine at Cana (John 2:1–11); Paul recommends a little wine for Timothy’s stomach (1 Timothy 5:23); but Proverbs consistently warns against drunkenness, and Ephesians 5:18 contrasts being filled with wine (negatively) with being filled with the Spirit (positively). The question of whether alcohol production per se is prohibited by Christian ethics is genuinely contested, and fund families reflect this honestly in their varied approaches.

Weapons and Defense

Defense and weapons screening is among the most theologically complex areas of Christian investing. Positions range across a wide spectrum:

No exclusion: Many Christian funds, including some explicitly evangelical ones, make no exclusion for defense companies, reasoning that a just government’s defense of its citizens is a legitimate and even noble calling (Romans 13:1–4).

Selective exclusion: Some funds exclude only manufacturers of weapons of mass destruction (nuclear, biological, chemical weapons) or specific categories like antipersonnel landmines and cluster munitions, which are banned under international humanitarian law.

Broad exclusion: Anabaptist-influenced funds like Praxis apply the most comprehensive defense exclusions, reflecting the pacifist tradition’s principled objection to participating in violence or its preparation.

For Christian investors, the weapons screen requires genuine theological engagement. Is the manufacture of conventional weapons that serve legitimate national defense morally equivalent to the manufacture of weapons designed to maximize civilian casualties? Most Christian ethicists would answer no. The specific screens a fund applies reflect its theological tradition’s answers to these questions.

Revenue Thresholds: How Much Involvement Is Too Much?

One of the most important and least discussed aspects of negative screening is the revenue threshold at which a screen is triggered. This matters practically because many large publicly traded companies have diversified business lines that may include minor exposure to excluded industries.

Consider a hypothetical large food and beverage company that derives 3% of its revenue from beer and wine sales. Does it belong in a fund with an alcohol exclusion? The answer depends on the fund’s threshold:

• A 0% threshold (any revenue from alcohol) would exclude it
• A 5% threshold would include it
• A 10% threshold would include it

Most fund managers apply thresholds in the 5%–10% range for most screen categories, reasoning that minor incidental exposure doesn’t define a company’s character the way a core business model does. Some categories—particularly abortion—may warrant lower thresholds given the severity of the moral concern.

The threshold question has no objectively correct answer. It requires judgment about how to weigh financial participation in an activity against the severity of the moral concern, the company’s overall character, and the practical implications of the standard applied. Christian investors should understand the thresholds their chosen funds use and evaluate whether those thresholds reflect appropriate moral judgment.

The Difficulty of Diversified Conglomerates

Negative screening is relatively straightforward for pure-play companies entirely focused on a single industry. It becomes significantly more complex with diversified conglomerates whose businesses span many sectors.

A large technology company might provide cloud hosting services to gambling websites, entertainment streaming that includes mature content, and healthcare data services that include abortion provider records. None of these might constitute a “core” business activity generating more than 5% of revenue, but the company’s infrastructure services enable all of them.

Fund managers grapple with this difficulty in different ways: some focus narrowly on direct revenue from excluded activities; others apply a broader “facilitation” standard that includes companies whose products or services materially enable excluded activities. The latter approach is theoretically more consistent but practically extremely difficult to apply rigorously across a large portfolio.

Investors should understand that no negative screen is perfectly comprehensive. The complexity of modern corporate structures means that even the most rigorous screens will include some companies with some exposure to excluded activities—and that stringent application of screens significantly reduces the investable universe in ways that affect diversification and performance.

Negative Screening in Practice: How Fund Families Implement It

Different fund families use different research approaches to implement their screens:

Third-party data providers: Companies like MSCI, Sustainalytics, As You Sow, and Morningstar provide data on company revenue by business segment, including flagging of excluded activities. Most fund managers subscribe to one or more of these services and use their data as the primary basis for screening.

Proprietary research: Larger fund families supplement third-party data with their own research—reviewing company filings, press releases, and investor presentations to identify potential exclusions the data providers may have missed.

Advisory boards: Some fund families, including Ave Maria and Timothy Plan, use theological advisory boards to provide guidance on difficult screening questions at the margin of their criteria.

Screening data isn’t perfect. Companies change their business activities. Revenue breakdowns aren’t always publicly disclosed. New industries (cannabis, cryptocurrency, artificial intelligence) don’t fit neatly into existing exclusion categories. Fund managers must make judgment calls in ambiguous situations, and those calls inevitably reflect their theological traditions and the practical realities of portfolio management.

What Negative Screening Doesn’t Do

It’s important to understand the limits of negative screening as a form of faith-based investing:

It doesn’t hurt excluded companies: When you sell shares on the secondary market, you’re not taking money away from the company—you’re transferring ownership to another investor who is willing to own those shares. Divestment and negative screening have at most an indirect effect on company valuation (by reducing demand for shares) rather than a direct effect on company operations or access to capital.

It doesn’t guarantee you own virtuous companies: Avoiding explicitly excluded industries doesn’t mean your portfolio is filled with companies that are actively honoring God in their operations. A company that passes all negative screens might still exploit workers, engage in environmental damage, or practice accounting deception. Positive screening—actively seeking companies with values-aligned practices—is the complement to negative screening that addresses this gap.

It doesn’t substitute for engagement: Shareholder engagement—using ownership to advocate for corporate change—can influence companies in ways that divestment cannot. Some faith-based investors argue that engagement is more impactful than divestment for companies where change seems possible.

These limitations don’t invalidate negative screening. Maintaining personal integrity—not profiting from clearly immoral business activities—has value regardless of whether it materially affects the screened companies. But they do suggest that negative screening is most faithful when integrated with positive screening and engagement rather than treated as a complete solution.

Building a Screened Portfolio

For individual investors who want to implement negative screening in their personal portfolios, several approaches are available:

Use faith-based funds: The simplest approach is to invest in Christian investment funds that implement negative screening professionally. Funds from Timothy Plan, Inspire, Guidestone, Eventide, Ave Maria, and Praxis all apply various forms of negative screening, removing the research burden from individual investors.

Use screening tools: Tools from As You Sow (FossilFreeIndexes.com, GunFreeFunds.org), Morningstar, and MSCI allow individual investors to examine the holdings of specific funds or ETFs and identify exposure to excluded industries.

Direct indexing: Emerging direct indexing platforms allow investors to own individual securities directly, applying custom screens. Companies like Motif and newer fintech platforms offer faith-based direct indexing that can implement highly personalized screening criteria.

Conclusion

Negative screening is the bedrock of faith-based investing—the most basic expression of the conviction that Christians should not profit from business activities that contradict their values. Practiced thoughtfully, with clear criteria, appropriate thresholds, and honest acknowledgment of its limitations, it’s a meaningful expression of the stewardship principle that what we own reflects who we are and what we enable.

The goal isn’t a perfect portfolio—that doesn’t exist in a complex market with imperfect information. The goal is faithful stewardship: making reasonable, principled decisions about what to own and what to avoid, pursuing that standard diligently, and integrating negative screening with the positive practices (seeking good companies, engaging as shareholders) that give the full picture of what Christian investing can look like.