S7 Ep15: Mispriced risk and the end of ESG

Episode Summary

Executive Summary: The episode examines whether carbon-intensive firms earn higher returns because markets misprice climate transition risk or because they truly outperform. Guest Alex Edmonds argues the carbon premium is largely explained by earnings surprises, implying significant mispricing and externality-driven underinvestment in emissions reduction. The discussion broadens to ESG’s role, disclosure, investor trade-offs, and the limits of treating ESG as a special niche.

Main Topics: Carbon premium: risk vs. mispricing (Priority: 5/5): Edmonds explains that stocks with higher carbon emissions show higher realized returns, but argues this may reflect outperformance rather than compensation for risk. He challenges the assumption that markets fully price transition risk. Earnings surprises as evidence of mispricing (Priority: 5/5): The core empirical test in Edmonds’ paper compares carbon-intensive firms’ earnings to analyst expectations. He says high emitters deliver positive earnings surprises and stock-price jumps around earnings announcements, supporting mispricing. Externalities and why polluters may not bear costs (Priority: 5/5): The conversation stresses that transition risk differs from physical risk because polluting firms create the problem but may not suffer its costs absent regulation or carbon taxation. This externality helps explain persistent mispricing. ESG is important, but not special (Priority: 4/5): In discussing his paper 'The End of ESG,' Edmonds argues ESG should be mainstream and evaluated like other long-term value drivers such as brand, management quality, and culture—not treated as a separate investment category. Investor and fiduciary trade-offs (Priority: 4/5): Edmonds rejects the idea that all climate-related investing automatically improves returns. Investors should recognize trade-offs and assess each project individually rather than assume every emissions-reduction decision creates shareholder value. Policy, disclosure, and corporate purpose (Priority: 4/5): The speakers discuss whether governments should tax externalities, whether climate disclosures should be mandatory, and whether firm purpose should incorporate social/environmental value. Edmonds is cautious about broad mandates and simple integrated-value models. Systemic climate risk and long-term value (Priority: 3/5): The episode closes by weighing climate tipping points, regional habitability, and investor horizons. Edmonds accepts climate change is severe, but argues its financial relevance must be analyzed alongside other development constraints and practical valuation limits.

Key Arguments: Carbon-intensive stocks have higher realized returns, but that premium may reflect mispricing and better-than-expected earnings rather than higher transition risk. A standard earnings-surprise test shows carbon-intensive firms beat analyst forecasts, and earnings-announcement days explain a large share of the carbon premium. Transition risk is a classic externality: firms causing emissions may not bear the cost unless policy internalizes it through taxes or regulation. ESG should be treated as one of many drivers of long-term performance, not as a special category that automatically deserves priority or exclusion. Investors face real trade-offs; it is simplistic to say all pro-ESG actions improve returns or that all ESG spending destroys value. Climate disclosure should focus on true vulnerability/risk as well as emissions, but climate is not the only material risk firms face. Universal ownership arguments are overstated; large investors do not automatically internalize all climate externalities, and smaller investors also face complex incentives. A purpose shift toward stakeholder/value-maximization sounds appealing in theory, but practical valuation of social and environmental value is extremely difficult.

Data Points: Carbon premium explained by earnings announcements: 30% to 50% - Share of the carbon premium explained by three-day earnings-announcement windows around quarterly earnings releases. Carbon premium explained using a broader window: 40% to 60% - Share explained when the window is expanded to seven days (one day before through five days after the earnings announcement). Earnings announcements per year analyzed: 4 - Quarterly earnings announcements used in the paper’s event-study design. Carbon externalities priced: 23% - Speaker cites the current share of carbon externalities being priced in the economy. People without electricity in sub-Saharan Africa: 600 million - Used to illustrate trade-offs and development constraints alongside decarbonization. Paper length: About 10 pages - Edmonds describes the carbon-premium paper as short because the test is standard in finance. Legislation restricting ESG in the US: 165 pieces - Referenced from a recent report on anti-ESG legislation. Working paper reference: EGCI working paper number 940 - The carbon premium paper is cited as a 2023 European Corporate Governance Institute working paper.

Pivotal Quotes: "Stocks that emit more carbon have higher realized returns than stocks that emit little carbon." — Alex Edmonds: Defines the carbon premium at the start of the discussion. "This is something where you can contribute to global warming, but you don't bear the consequences of it." — Alex Edmonds: Explains why transition risk may remain unpriced due to externalities. "ESG is extremely important, yes, but also nothing special." — Alex Edmonds: Summarizes his view that ESG matters but should not be treated as a unique investment category.

Implications: Investors should not assume carbon-intensive firms are always overpriced for risk; some may outperform due to mispricing. Policymakers should internalize externalities, while firms and shareholders should assess ESG projects case by case rather than relying on broad slogans.