In November 2024 the Vatican quietly released an update to its internal investment policy that got almost no coverage in the mainstream financial press and only moderate attention from Catholic media. That was a mistake. The update is one of the more significant moves the Holy See has made on investment ethics in the last decade, and it has real implications for Catholic retail investors even though nothing in the document is binding outside Vatican institutions.

Let me walk through what actually changed, what is still fuzzy, and what it means for anyone trying to invest in alignment with Catholic Social Teaching in 2026.

What the document is and what it is not

The 2024 update was formally called "Mensuram Bonam" supplementary guidance, building on the 2022 document of the same name that set out investment principles for Vatican-affiliated institutions. The new supplement was issued jointly by the Pontifical Academy of Social Sciences and the Dicastery for Promoting Integral Human Development. It runs to about 94 pages in English and includes specific sector exclusions, engagement guidelines, and a new framework for positive screening.

A few things you should understand about what this document is and is not. It is not a binding rule on individual Catholics or lay-run investment firms. It is the Vatican's internal policy for how Vatican-affiliated pension funds, endowments, and operational reserves should be invested. However, it is widely treated as moral guidance by Catholic investors because it represents the most detailed official statement on investment ethics to come out of Rome since the 2022 original.

The document also does not override or replace the US Conference of Catholic Bishops (USCCB) Socially Responsible Investment Guidelines, which got their own major update in 2024. The two documents are complementary but not identical, and the differences between them are actually one of the most interesting parts of the story.

The biggest change: active engagement is now the default, not exclusion

The single most important shift in the 2024 supplement is philosophical. The 2022 original leaned heavily on exclusionary screening: here is a list of industries we will not touch, and we expect our asset managers to respect it. The 2024 supplement explicitly states that engagement and active ownership should be the first tool, and divestment should be used only when engagement has failed or the activity is beyond any moral redemption.

This sounds like a small change but it is not. It means that Vatican-affiliated investors are now expected to actively vote their proxies, file shareholder resolutions, and engage with company management on ethical issues. It is a direct repudiation of the passive "screen out the bad stuff and hold the rest" approach that dominated Catholic institutional investing for most of the last twenty years.

I think this is the right move. Divestment feels clean but it rarely changes corporate behavior because there is always another buyer. Engagement is messier and slower, but it actually has the chance to move companies on specific issues. The Vatican is basically saying we would rather own a company and push it to improve than divest and lose our seat at the table.

The implication for Catholic retail investors is that the funds you hold should also be doing active engagement, not just exclusionary screening. If your Catholic mutual fund brags about how many companies it excludes but cannot tell you what it actually did last year to influence the companies it owns, you are holding a 2015 strategy in a 2026 world.

The exclusion list got more precise and, in some places, more permissive

The 2022 document had a fairly blunt exclusion list: weapons, abortifacients, pornography, and "companies whose primary activity is gambling." The 2024 supplement added granularity in several areas.

On weapons, the new language distinguishes between "armaments intended for indiscriminate harm" (which are excluded) and "dual-use defense technologies" (which are permitted if they meet certain criteria related to lawful defense under just war doctrine). This is a notable softening of the old blanket exclusion and reflects the reality that almost every major industrial company in Europe and North America has some connection to defense supply chains. The Vatican is essentially acknowledging that a rigid exclusion of anything defense-related makes it impossible to hold a diversified equity portfolio in developed markets.

On abortifacients, the exclusion remains strict but the supplement adds clarity on how to treat pharmaceutical companies that have one division producing concerning products while the rest of the company produces life-saving medicines. The old guidance would have excluded the whole company. The new guidance says you can engage, seek divestiture of the specific division, and only exclude the parent company as a last resort. This is a significant change and will probably push some Catholic funds to hold companies they previously excluded.

On gambling, the guidance now includes "companies deriving significant revenue from addictive behaviors, including but not limited to gambling, alcohol, tobacco, and recreational cannabis." That is a broader sweep than the 2022 document, and it is going to catch some holdings that Catholic funds were previously comfortable with, particularly in the consumer staples sector.

The new positive screening framework

The most innovative part of the 2024 supplement is a positive screening framework that asks investors to actively favor companies contributing to specific areas of Catholic Social Teaching. The framework identifies five priority areas: integral human development, the dignity of work and workers, care for creation, solidarity with the poor and marginalized, and the promotion of the common good.

For each area, the document provides specific metrics that can be used to evaluate companies. These are not as prescriptive as ESG scoring systems, but they give fund managers actual things to measure. For example, under "dignity of work and workers," the metrics include living wage policies, union relations, workplace safety records, and the ratio of CEO to median worker pay.

I think this positive framework is going to be incorporated into some mainstream Catholic mutual funds over the next 18 months, which is genuinely exciting. Until now, Catholic investing has been almost entirely defined by what you do not own. Adding a positive dimension makes the approach more intellectually coherent and, frankly, more motivating for younger Catholic investors who want their money to do something, not just avoid doing harm.

What is still vague

Three areas of the 2024 supplement are still frustratingly ambiguous.

First, the treatment of ESG scoring and third-party ratings is unclear. The document acknowledges that ESG ratings can be useful but warns about "ideological capture" of the ratings process and specifically notes concerns about how some ESG frameworks handle life and family issues. The document does not say which ESG ratings are acceptable or what happens when an ESG rating conflicts with Catholic Social Teaching. This is going to be a mess to operationalize.

Second, the treatment of passively managed index funds is not addressed in any real detail. The document leans heavily on active engagement, but most pension and endowment money globally is now in index funds that do not engage. The Vatican does not say whether Catholic institutions should move out of index funds into actively managed vehicles, or whether index fund providers themselves should be pressured to engage on Catholic issues. Given that Vanguard and BlackRock control the proxy votes on most index fund holdings, this is a huge gap.

Third, there is no guidance on cryptocurrency, digital assets, or private market investments. These are three of the fastest-growing asset classes in the world and the 2024 supplement acts like they do not exist. I understand that the Vatican is not going to weigh in on Bitcoin, but the silence on private equity and private credit is a real oversight given how much institutional money has moved into those categories over the last decade.

What Catholic retail investors should do with this information

If you are a Catholic investor reading this, here are my specific recommendations for 2026.

First, audit your current fund holdings against the updated exclusion list. The changes around weapons, pharmaceuticals, and addictive consumer products mean that some funds that were compliant with the 2022 guidance are not compliant with the 2024 update. Ave Maria, Knights of Columbus, and Catholic Investor are all in the process of updating their methodologies, but the updates will roll out at different speeds. Check before you buy.

Second, pay attention to whether your funds are doing active engagement. Read the annual reports. Look for specific examples of shareholder resolutions filed, proxy votes cast against management, and engagement campaigns that actually produced outcomes. If you cannot find any of that, you are paying active management fees for passive exclusion, which is bad value.

Third, take the positive screening framework seriously in your own decision-making. Even if your fund does not formally use it, you can apply it to individual stock purchases in a self-directed account. Think about which companies are actually contributing to integral human development and the common good, not just which ones are not causing harm.

The 2024 Vatican supplement is a serious document that deserved more attention than it got. If you are investing as a Catholic, it is worth reading the whole thing and thinking about what it means for your portfolio. The principles are clearer than they have ever been. The question is whether the Catholic investing industry moves fast enough to match them.

The Vatican's New Investment Guidelines: What Changed in 2024