Investor Corner/The asset classes/Factor Investing and ESG
2.6.5 ESG Investing
ESG investing screens or tilts a portfolio toward companies with better environmental, social and governance scores. Performance evidence relative to conventional investing is mixed; the main benefit tends to be values alignment and potential long-term risk reduction.
What the three letters actually cover
Environmental factors look at a company's impact on the natural environment, such as emissions and resource use. Social factors look at how a company treats its workforce, customers and the wider community. Governance factors look at the quality and integrity of a company's leadership, board structure and internal oversight.
ESG stands for Environmental, Social and Governance, three categories of non-financial factors used to evaluate companies. Environmental criteria cover a company's carbon footprint, pollution, resource usage and climate risk management. Social criteria cover labour practices, community impact, diversity, customer safety and supply chain standards. Governance criteria cover board independence, executive compensation, shareholder rights, transparency and anti-corruption practices.
ESG investing is not philanthropy. The thesis is that companies managing ESG risks well are better-run businesses that will outperform over the long term, and companies ignoring these risks face regulatory penalties, lawsuits, reputational damage and operational disruptions that eventually destroy shareholder value. The argument is economic, not purely ethical: a company dumping toxic waste may save costs today but faces cleanup liabilities, regulatory fines and consumer backlash that will impair future earnings.
How ESG funds actually build their portfolios
Some ESG funds simply exclude specific industries entirely, such as tobacco or certain fossil fuel producers. Others take a more integrated approach, incorporating ESG scores as one additional input alongside traditional financial analysis when selecting which companies to hold, without necessarily excluding entire industries outright.
ESG funds in India are a relatively recent development. Several AMCs offer ESG-themed funds, typically constructed by filtering the investment universe through ESG scores provided by rating agencies (CRISIL, MSCI, Sustainalytics). The filtering methodology varies: some funds use negative screening (excluding the worst offenders), some use positive screening (selecting ESG leaders), and some use a best-in-class approach (selecting the top ESG performers within each sector, rather than excluding entire sectors).
The performance record of ESG funds in India is too short to draw definitive conclusions. Globally, the evidence is mixed: ESG factors appear to have a modest positive or neutral effect on risk-adjusted returns over long periods, but the magnitude is debated and varies significantly by market, methodology and time period. The main risk of ESG investing is not underperformance but concentration: excluding large sectors (tobacco, fossil fuels, defence) from the investment universe can reduce diversification and create unintended sector tilts.
What to check before investing based on ESG criteria
ESG methodologies and scoring approaches vary meaningfully between fund providers, so two funds both labelled ESG can differ considerably in what they actually screen for and how strictly. Reading a specific fund's actual ESG methodology, rather than assuming based on the label alone, is worth the effort for anyone specifically motivated by these considerations.
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Before investing in an ESG fund, understand the specific methodology used. A fund that excludes coal companies from its portfolio has a very different exposure profile from one that includes all sectors but overweights ESG leaders within each. Check the top holdings and sector allocation of the ESG fund against a broad market index to see how different the two actually are. In some cases, ESG funds in India end up looking very similar to the Nifty 50 because most large Indian companies now report ESG metrics and score reasonably well. If the ESG fund's portfolio largely overlaps with a standard index fund at a higher expense ratio, the value added by the ESG label is questionable.