A fund called "Sustainable Future Equity" and a fund called "Total Market Index" can hold many of the same companies, charge very different fees, and follow methodologies that share almost nothing. That gap between what a label promises and what a portfolio actually does is the core problem of greenwashing in ESG investing. ESG, short for environmental, social, and governance, describes a broad set of strategies that weigh non-financial factors alongside returns, but the term has no single regulatory definition, and the marketing has often outrun the substance. This article explains what ESG funds claim to do, why their labels frequently mislead, how regulators in the United States and European Union have responded, and the concrete steps an investor can take to separate a genuinely sustainable fund from a well-branded one. None of this is financial advice; it is general information, and decisions about your own money should be made with a licensed professional and your own situation in mind.
What ESG Investing Claims To Be
ESG investing is an umbrella for several distinct approaches rather than one method. The U.S. Securities and Exchange Commission's investor education materials describe ESG strategies as falling broadly into screening out certain companies or sectors, selecting leaders within an industry, or investing in firms with the goal of engaging them to improve their practices [1]. Some funds avoid tobacco, weapons, or fossil fuels; others tilt toward companies with strong governance or low carbon intensity; still others target measurable real-world outcomes, sometimes called impact investing.
What unites these strategies is a claim that the fund considers more than financial metrics. What divides them is everything else: which factors matter, how they are measured, how much they are weighted, and whether they drive the portfolio or merely sit alongside conventional stock-picking. Because "ESG," "sustainable," "green," and "responsible" carry no fixed legal meaning, two products with nearly identical names can pursue opposite logics. That ambiguity is the soil in which greenwashing grows.
What Greenwashing Actually Means
Greenwashing is the practice of presenting an investment as more environmentally or socially responsible than its holdings and methodology justify. The SEC's investor bulletin on ESG funds explicitly warns that some funds may exaggerate their environmental or sustainability practices, and that investors cannot assume a fund's name reflects its actual strategy [1]. Greenwashing is not always an outright lie; more often it is selective emphasis, where a fund highlights a handful of clean-energy holdings while quietly maintaining broad market exposure.
The risk is concrete, not theoretical. The SEC has brought enforcement actions against advisers for misstatements about their ESG processes, including a case in which an adviser represented that investments had undergone an ESG quality review when, in fact, that review was not consistently applied [1]. The lesson for investors is that the marketing layer and the operational reality can diverge, and that diligence has to reach past the brochure.
Why Fund Labels Can Mislead
The single most common gap is between a fund's name and its holdings. A name signals a theme; the portfolio reveals the substance. A fund may carry "ESG" or "sustainable" in its title while holding the same large-cap technology and consumer companies that dominate any broad index, with only modest exclusions at the margins. The label sets an expectation that the holdings do not necessarily meet.
Several structural problems compound this:
- Vague criteria. Terms like "responsible," "ethical," and "green" are not defined by any standard, so each issuer can interpret them differently.
- Inconsistent ratings. Different data providers score the same company very differently, so a fund's claimed ESG credentials depend heavily on which rater it uses.
- Name-versus-holdings gaps. A small thematic sleeve can justify a sustainable-sounding name even when most assets sit in conventional positions.
- Weighting opacity. A fund can include controversial holdings if its methodology weights governance or transition potential heavily enough to offset them.
Because these choices happen inside the methodology rather than on the marketing page, an investor who reads only the fund name learns almost nothing reliable about what they actually own.
The Limits Of ESG Ratings
Much of the confusion traces back to the ratings themselves. ESG scores are produced by competing data firms using proprietary models, and those models disagree substantially. A widely cited study published in the Review of Finance, titled "Aggregate Confusion," found that ESG ratings from major agencies correlated only in the range of roughly 0.38 to 0.71, meaning the same company can look like a leader to one rater and a laggard to another [2].
The researchers traced this divergence to three sources: measurement, where agencies use different indicators for the same attribute; scope, where they consider different sets of attributes; and weight, where they aggregate those attributes differently. Measurement accounted for the largest share of the disagreement, followed by scope, with weighting contributing the least [2]. There is also a "rater effect," in which an agency's overall impression of a company colors its category-level scores [2]. The practical consequence is that an ESG rating is an opinion, not a measurement, and a fund built on one provider's scores reflects that provider's judgment calls rather than an objective truth.
How Regulators Have Responded
Regulators on both sides of the Atlantic have moved to curb the gap between labels and reality, though their tools differ. In the United States, the SEC adopted amendments to its fund "Names Rule" on September 20, 2023, the first substantial changes in two decades [3]. The amendments expand the long-standing requirement that a fund invest at least 80 percent of its assets in line with what its name suggests, extending that rule to names implying particular characteristics, including terms that indicate the fund incorporates ESG factors [3]. The aim is to make a sustainable-sounding name correspond to a sustainable-leaning portfolio.
In the European Union, the Sustainable Finance Disclosure Regulation, known as SFDR, has applied since March 2021. It is important to frame SFDR accurately: it is fundamentally a disclosure regime, not a labeling or quality-certification scheme [4]. Its Article 8 covers products that promote environmental or social characteristics, and Article 9 covers products with sustainable investment as their objective. In practice, the market began using "Article 8" and "Article 9" as de facto labels, even though regulators did not intend them as quality seals, and European supervisors including ESMA have worked to address the resulting confusion and supervisory inconsistency. Both regimes share a common message: disclosure and naming must not mislead, but neither guarantees that any given fund matches an individual investor's values.
How To Scrutinize A Fund Yourself
Because no label is self-certifying, the burden of verification falls on the investor, and the tools to do it are public and free. The SEC's investor materials direct investors to read a fund's prospectus and most recent shareholder report rather than rely on the name [1]. A disciplined review can be reduced to a few steps:
- Read the actual holdings. Pull the fund's full list of positions and check whether they match the theme the name implies. Large gaps between name and holdings are the clearest warning sign.
- Read the prospectus and methodology. Look for a specific description of the ESG strategy, which factors are used, and which data provider supplies the scores. Vague language is itself informative.
- Check the expense ratio. The SEC notes that ESG funds may carry different, sometimes higher, fees than comparable conventional funds, and higher fees reduce returns over time [1].
- Compare fees with a neutral tool. FINRA's Fund Analyzer lets investors compare the operating expenses of mutual funds and ETFs against similar funds and project the long-term cost impact [5].
- Compare ratings across providers. Because raters disagree, looking at more than one ESG score gives a fuller, more honest picture than trusting a single number [2].
- Watch for unsupported claims. Be skeptical of broad words like "green" or "responsible" that the fund does not back with a defined, disclosed process.
The goal is not to find a perfect fund but to confirm that the document trail supports the marketing.
The Bottom Line
ESG investing can reflect genuine, well-documented strategies, and it can also be a coat of paint over an ordinary portfolio. The difference is rarely visible in the fund's name, which is precisely why greenwashing persists. Ratings disagree, definitions are loose, and even strong regulation in the United States and European Union addresses naming and disclosure rather than guaranteeing that a fund matches your particular values [3][4]. The reliable defense is documentary: read the holdings, read the prospectus and methodology, compare expense ratios with a neutral tool, and treat any ESG score as one opinion among several [1][2][5]. A fund that earns a sustainable label should be able to show its work in writing. This article is general educational information and not financial advice; consult a qualified, licensed professional before making investment decisions.
Sources
[1] U.S. SEC Investor.gov: Environmental, Social and Governance (ESG) Funds – Investor Bulletin — https://www.investor.gov/introduction-investing/general-resources/news-alerts/alerts-bulletins/investor-bulletins-1
[2] Review of Finance (Oxford Academic): Aggregate Confusion: The Divergence of ESG Ratings — https://academic.oup.com/rof/article/26/6/1315/6590670
[3] U.S. SEC: SEC Adopts Rule Enhancements to Prevent Misleading or Deceptive Investment Fund Names (Press Release 2023-188) — https://www.sec.gov/newsroom/press-releases/2023-188
[4] European Commission: Sustainability-related disclosure in the financial services sector (SFDR) — https://finance.ec.europa.eu/sustainable-finance/disclosures/sustainability-related-disclosure-financial-services-sector_en
[5] FINRA: Using the FINRA Fund Analyzer — https://www.finra.org/investors/tools-and-calculators/using-finra-fund-analyzer
