Values-Based Investing in Nigeria: How to Remove Sin Stocks from Your Portfolio

Nigerian investors increasingly seek investment strategies that reflect their personal values while pursuing financial returns. Values-based investing, also called ESG (Environmental, Social, and Governance) screening, allows you to build portfolios that exclude companies involved in activities you consider harmful.

Whether you want to avoid tobacco companies, gambling platforms, or businesses harming the environment, you can create an investment portfolio that aligns with both your financial goals and personal principles. Research shows that investors worldwide now hold over $35 trillion in value-based investments, and these portfolios often perform just as well as traditional ones.

For Nigerian investors navigating local and international markets, understanding how to screen investments based on your values has become easier than ever before.

What Does Values-Based Investing Mean?

Values-based investing means choosing where to put your money based on more than just potential profits. You also consider whether companies operate in ways that match your ethical, religious, or social beliefs. Some people call this ESG investing, which stands for Environmental, Social, and Governance factors. Others refer to it as ethical investing or socially responsible investing.

The basic idea is simple. Instead of investing in any company that might make money, you look at what that company actually does. Does it harm the environment? Does it treat workers fairly? Does it sell products you consider harmful? Based on your answers to these questions, you decide whether that company deserves your investment money.

This strategy has grown rapidly across Africa. According to the African Investing for Impact Barometer, investors managing over $336 billion in assets now use ESG principles when making decisions. Screening strategies, where investors specifically exclude certain types of companies, account for approximately $231 billion of this total. These numbers show that values-based investing is not just a trend but a fundamental shift in how people think about building wealth.

Understanding Sin Stocks and Why Investors Avoid Them

The term "sin stocks" refers to shares in companies that make money from activities many people consider morally wrong or socially harmful. Traditional sin stocks include tobacco companies, alcohol producers, gambling operations, and weapons manufacturers. These industries have existed for decades, but an increasing number of investors now choose to exclude them from their portfolios.

Tobacco Companies

Tobacco companies represent perhaps the most widely avoided sin stock category. Global smoking rates have fallen dramatically over the past 80 years. In the 1940s, about half of all adults smoked cigarettes. Today, that number has dropped to roughly 12.5% in developed countries. This decline reflects both health awareness and changing social attitudes. Many investors believe that profiting from products known to cause cancer and other serious diseases contradicts their values, regardless of potential financial returns.

Alcohol Producers

Alcohol producers form another major category of sin stocks. For Muslim investors in Nigeria, avoiding alcohol companies is not optional but required by religious law. Islamic principles prohibit not only consuming alcohol but also profiting from its production and sale. This religious guidance has created strong demand for Shariah-compliant investment options that automatically exclude alcohol producers, along with other prohibited businesses.

Gambling Operations

Gambling operations have expanded rapidly across Africa in recent years. Online betting platforms now reach millions of Nigerians through mobile phones. While some people see gambling as harmless entertainment, others view it as predatory, particularly when targeting low-income communities. Studies show that gambling can lead to addiction, financial ruin, and family problems. Investors concerned about these social impacts often choose to exclude gambling companies from their portfolios.

Weapons Manufacturers

Weapons manufacturers profit from producing guns, missiles, and other military equipment. Some investors avoid these companies because they oppose violence or war on principle. Others specifically target manufacturers of controversial weapons like landmines or cluster bombs, which cause civilian casualties long after conflicts end. Between 2012 and 2016, the amount of money divested from weapons manufacturers grew from $74 billion to $835 billion globally, showing the scale of concern about this industry.

Expanding Definitions

Beyond these traditional categories, modern sin stocks now include fossil fuel companies contributing to climate change, businesses with poor labor practices, companies involved in deforestation, and firms violating human rights. As awareness of global challenges grows, the definition of what constitutes a sin stock continues to expand.

Does Avoiding Sin Stocks Mean Lower Returns?

Many investors worry that excluding certain companies will hurt their investment performance. This concern is understandable but often misplaced. Research on this question produces mixed results, but the overall message is clear: you can build wealth while honoring your values.

Some studies suggest that sin stocks actually perform better than average because they face less competition for investment money. When large numbers of ethical investors refuse to buy these stocks, prices may stay lower than company fundamentals would justify. This creates opportunities for investors who do not share these ethical concerns. However, this performance advantage appears to be shrinking as values-based investing becomes more mainstream.

Other research shows that portfolios excluding sin stocks can match or exceed market returns. The iShares ESG Aware MSCI USA ETF, which screens out controversial companies, delivered 14.63% returns per year over the five years ending January 2025. This performance demonstrates that avoiding sin stocks does not automatically mean accepting lower profits.

The real question is not whether you can make money with values-based investing, but whether the companies you exclude would have performed better than the ones you include. In many cases, sin stocks face growing regulatory pressures, changing consumer preferences, and reputation risks that may hurt long-term performance. Tobacco companies, for example, have seen steady declines in demand across developed markets. Fossil fuel companies face increasing pressure from climate regulations and competition from renewable energy.

For Nigerian investors, the performance question matters less than many think. If a company's business model contradicts your core values, the potential for slightly higher returns rarely justifies the moral compromise. Moreover, as global attitudes shift, companies aligned with positive social values may increasingly outperform those seen as harmful.

Five Strategies for Screening Your Portfolio

Building a values-based portfolio requires a clear strategy. You need to decide not just what to avoid, but how to make those decisions systematically. Five main approaches have emerged, each with distinct advantages and challenges.

Negative Screening

Negative screening represents the most straightforward approach. You create a list of companies, industries, or practices you refuse to support, then eliminate any investments that match your exclusion criteria. For example, if you want to avoid all tobacco exposure, you would exclude Philip Morris, British American Tobacco, Altria, and any other company involved in cigarette production or sales. This method provides absolute certainty that your money is not supporting activities you oppose. However, it can reduce your investment options and may require significant research to identify all companies involved in excluded activities.

Positive Screening

Positive screening takes the opposite approach. Instead of excluding bad actors, you actively search for companies demonstrating excellent environmental, social, and governance practices. This strategy allows you to stay invested in industries you might otherwise avoid by choosing the best companies within each sector. For instance, rather than excluding all energy companies, you might invest in those making the strongest commitments to renewable energy and carbon reduction. The challenge here lies in determining which companies truly lead their industries versus those simply engaged in public relations exercises.

ESG Integration

ESG integration combines traditional financial analysis with environmental, social, and governance factors. When evaluating any potential investment, you consider not just profitability and growth prospects but also how the company manages environmental risks, treats employees, engages with communities, and structures its leadership. This approach provides the most complete picture of a company but requires access to detailed ESG data, which may be limited for smaller Nigerian companies.

Norms-Based Screening

Norms-based screening excludes companies violating international standards like the UN Global Compact principles. These principles cover human rights, labor standards, environmental protection, and anti-corruption measures. This strategy works well for investors who want to avoid the worst corporate behavior without getting into complex debates about which industries are acceptable. Companies clearly violating international norms get excluded regardless of their sector. The main limitation is that many companies can technically comply with minimum standards while still engaging in practices some investors find objectionable.

Thematic Investing

Thematic investing focuses your portfolio on specific solutions to social or environmental problems. Rather than primarily avoiding harm, you actively seek companies addressing challenges you care about. In Nigeria, this might mean investing in solar energy companies working to solve electricity shortages, agricultural technology firms improving food security, or healthcare providers expanding access to medical services. This approach appeals to investors who want their money actively contributing to positive change, not just avoiding negative impacts.

How to Actually Build Your Values-Based Portfolio

Understanding these strategies matters only if you know how to apply them. Creating a values-based portfolio requires several concrete steps, starting with honest reflection about what matters most to you.

Define Your Values and Priorities Clearly

Begin by defining your values and priorities clearly. Sit down with a piece of paper and write out which issues concern you most deeply. Are you primarily motivated by religious requirements? Do environmental problems keep you awake at night? Are you focused on social justice issues like fair wages and safe working conditions? Different investors prioritize different concerns, and your portfolio should reflect your specific values, not someone else's. Once you have identified your top priorities, translate them into specific exclusion criteria. For example, "I care about the environment" becomes "I will not invest in companies involved in deforestation, fossil fuel extraction, or industrial pollution."

Examine Your Current Investment Holdings

Next, examine your current investment holdings honestly. Look at every stock, mutual fund, and exchange-traded fund in your portfolio. Research what these companies actually do and how they make money. You may discover uncomfortable truths. That diversified fund you thought was safe and boring might hold tobacco stocks. That technology company you admire might manufacture weapons systems. That bank offering attractive dividends might finance fossil fuel projects. Use company websites, annual reports, and ESG rating services to understand exactly where your money is going right now.

For individual stocks, this research is relatively straightforward. For mutual funds and ETFs, you need to examine the fund holdings, which are typically listed on the fund company's website or in regulatory filings. Pay special attention to the largest holdings, as these represent the biggest portions of your investment. Some funds hold hundreds of companies, making complete screening impractical, but reviewing the top 20 to 30 holdings usually reveals whether the fund aligns with your values.

Develop a Transition Plan

After identifying conflicts between your current holdings and your values, develop a transition plan. Selling everything at once rarely makes sense. You may face tax consequences from selling appreciated investments. Transaction costs can add up quickly if you are making many small trades. Market timing also matters, as selling during a temporary price decline locks in losses unnecessarily. Instead, create a gradual transition schedule. Start by divesting from your most objectionable holdings, then reinvest those proceeds in values-aligned alternatives. Over several months or quarters, progressively shift your entire portfolio toward companies meeting your criteria.

Research Carefully

As you reinvest, research carefully to avoid jumping from one problem to another. A company with strong environmental practices might have terrible labor relations. A firm avoiding obvious sin stock categories might derive significant revenue from less visible controversial activities. Use multiple information sources, including ESG ratings from providers like MSCI or Sustainalytics, company sustainability reports, news coverage, and non-profit research organizations tracking corporate behavior.

Nigerian investors face specific challenges finding values-aligned investment options in the local market. The Nigerian Exchange Group lists relatively few companies compared to major international markets, and detailed ESG information may be limited. However, you can combine careful research on local companies with access to international ESG funds through global brokerage accounts. Many Nigerian banks and investment platforms now offer access to international markets, allowing you to invest in ESG-focused ETFs and mutual funds managed by major firms like BlackRock, Vanguard, and State Street.

Investment Options for Values-Based Nigerian Investors

Several practical investment options exist for Nigerian investors committed to values-based strategies. Understanding what is available helps you build a diversified portfolio without compromising your principles.

International ESG-Focused Exchange-Traded Funds

International ESG-focused exchange-traded funds provide the easiest entry point for most investors. These funds automatically screen out sin stocks and controversial companies, saving you from having to research thousands of individual companies yourself. The iShares ESG Aware MSCI USA ETF, for example, tracks large American companies while excluding those with significant tobacco, weapons, fossil fuel, or other controversial business activities. Similar funds exist covering European markets, emerging markets, and specific sectors like technology or healthcare. Most charge annual fees between 0.15% and 0.25%, which is very reasonable for the screening work they provide.

Shariah-Compliant Funds

For Muslim investors, Shariah-compliant funds offer ready-made portfolios meeting Islamic investment principles. These funds automatically exclude not just alcohol, tobacco, gambling, and pork-related businesses, but also conventional financial institutions that profit from interest. They also apply financial ratio screens to ensure companies do not carry excessive debt or derive too much income from prohibited activities. Several international fund families now offer Shariah-compliant options, and some Nigerian banks provide access to Islamic investment products.

Custom Portfolios of Individual Nigerian Stocks

Building a custom portfolio of individual Nigerian stocks allows you to support local companies while maintaining values alignment. This approach requires more work but gives you complete control. Focus your research on sectors like telecommunications, where companies are expanding digital connectivity and financial inclusion, or consumer goods firms demonstrating commitment to sustainable practices and fair labor. Banking sector companies involved in microfinance and SME lending often score well on social impact criteria. Review company annual reports, sustainability disclosures required by the Nigerian Exchange Group, and media coverage to assess which firms genuinely prioritize ESG factors versus those merely talking about them.

Thematic Funds Targeting Specific Solutions

Thematic funds targeting specific solutions offer another compelling option. Clean energy funds invest in solar, wind, and other renewable energy companies. Water funds focus on companies providing clean water access or improving water efficiency. Financial inclusion funds target businesses expanding banking and payment services to underserved populations. These thematic approaches appeal to investors who want their money actively contributing to solutions, not just avoiding problems.

Managing Your Values-Based Portfolio Over Time

Creating a values-based portfolio is not a one-time project but an ongoing commitment. Companies change, your values may evolve, and new information constantly emerges about corporate practices. Effective management requires regular attention without becoming obsessive.

Schedule Regular Portfolio Reviews

Schedule quarterly or annual portfolio reviews to reassess your holdings. During these reviews, check whether your companies remain aligned with your criteria. Has a previously acceptable company entered a controversial business? Has a firm you excluded made genuine changes addressing your concerns? Have new ESG ratings or research reports revealed information changing your assessment? These reviews help you maintain portfolio integrity without constant monitoring.

Stay Informed About Major ESG Developments

Stay informed about major ESG developments affecting your investments. You do not need to read every corporate sustainability report or follow daily ESG news, but you should watch for significant events. When a company faces accusations of human rights violations, environmental disasters, or major governance failures, take time to investigate. Sometimes allegations prove unfounded or blown out of proportion. Other times, they reveal serious problems requiring you to reconsider your investment.

Be Prepared for Difficult Decisions

Be prepared to make difficult decisions when companies you own create moral dilemmas. Suppose you invest in a technology company with strong environmental practices and fair labor policies, but then discover it sells surveillance equipment to repressive governments. Or imagine owning shares in a bank that funds renewable energy projects but also finances fossil fuel extraction. Perfect companies rarely exist. You must decide where to draw your lines and when compromises become unacceptable.

Consider Engagement as an Alternative

Consider engagement as an alternative to immediate divestment when companies fall short of your standards. If you own shares in a company, you have rights as a part-owner. You can vote on shareholder resolutions, attend annual meetings, and communicate directly with management about your concerns. Some investors use a stewardship approach, attempting to influence company behavior before resorting to selling shares. This strategy works best when many investors coordinate their efforts and when companies care about their reputation with the investment community. However, engagement requires time and expertise that individual investors may lack.

Build Your Values-Based Portfolio with Run Alpha

Creating an investment portfolio that honors your values while building wealth requires expertise and ongoing management. At Run Alpha, we help Nigerian investors align their financial goals with their personal principles through customized values-based investment strategies.

Visit www.runalpha.co to schedule a consultation and start building a portfolio that reflects what matters most to you.