Climate Change vs. The Stock Market (EP.156)

Episode Summary

Executive Summary: In this episode of the Rational Reminder Podcast, hosts Benjamin Felix and Cameron Passmore discuss the book 'Factfulness' by Hans Rosling, which argues the world is improving despite negative news. They dive deep into climate change as an investing topic, examining whether climate risk is priced in financial markets. By reviewing extensive academic literature, Felix concludes climate risk is indeed priced, but it does not offer unique expected returns beyond known risk factors like size, value, and profitability. He proposes a counterintuitive approach of owning 'brown' companies and engaging for their transition rather than just excluding them.

Main Topics: Book Review: Factfulness by Hans Rosling (Priority: 4/5): Cameron Passmore reviews the book 'Factfulness', which shows how the world is actually improving through statistics on life expectancy, literacy, and other metrics, but people perceive the opposite due to negative news focusing on extremes. Climate Change as Invested Risk (Priority: 5/5): Benjamin Felix explores the theory and empirical evidence on whether climate risk is priced in financial markets, covering physical risk and transitional risk, and using research papers to demonstrate that markets do account for climate-related risks. Empirical Evidence on Climate Risk Pricing (Priority: 5/5): A deep dive into multiple academic papers showing that climate risk is priced in municipal bonds, real estate, options markets, and corporate bonds, and that market participants have expectations aligned with climate models. Investment Implications of Climate Risk (Priority: 5/5): Discussion on how investors can respond to priced climate risk, including the idea of owning brown companies to benefit from their transition to greener operations, versus owning only green firms. Robo-Advisor Strategy Shift and Bad Advice (Priority: 3/5): Analysis of Wealthfront's pivot toward self-directed trading and crypto, moving away from modern portfolio theory, and criticism of advice to allocate 5% each to gold, Bitcoin, commodities, and cash as inflation hedges.

Key Arguments: Climate risk (physical and transitional) is priced in financial markets, meaning investors are compensated for bearing it. Empirical studies show that physical risk is priced in municipal bonds (higher yields for sea-level rise exposure) and real estate (7% discount), while transitional risk is priced in stock prices (1.5-2% drop after Nature paper on unburnable carbon) and options (higher cost of downside protection for carbon-intensive firms). After controlling for known risk factors (size, value, profitability), greenhouse gas emissions have no additional predictive power for stock returns, based on a 2020 study by Wade Dave and Philip Meyer-Brauns. Investors with a taste for green assets accept lower expected returns, as green firms hedge climate risk but come with lower cost of capital. A counterintuitive strategy: owning brown companies and engaging for their transition to green may be more impactful than simply excluding them, as active ownership by large asset managers can pressure firms to reduce climate risk. The world is improving (Factfulness), but negative news cycle distorts perception; this context helps understand why climate risk may seem worse than it is in aggregate.

Data Points: Temperature record: 46.1°C - Set in Lytton, BC, Canada, July 2021, during a heatwave discussed at the start of the podcast. Life expectancy of average person in world: 72 years - Cited from Factfulness; most people guess incorrectly, with educated audiences performing worse than random. Drop in stock prices of largest U.S. oil and gas firms after Nature paper: 1.5 to 2% - Within three days of publication of paper arguing fossil fuel reserves must remain untouched to limit warming to 2°C. Discount for houses exposed to sea-level rise (50-year projection): 7% - From 2019 study by Bernstein, Gustafson, and Lewis; discount is 4% for 100-year projected flooding. Guitars per million people increase from 1962 to 2014: 200 to 11,000 per million - Stat from Factfulness illustrating progress in a non-obvious area. Projected world population plateau: 11 billion in ~100 years - UN projection; birth rate slowing, contradicting fears of exponential growth.

Pivotal Quotes: "I think that as much as it [climate risk] is a risk, and I agree that it is, it's a priced risk. And we, as investors, are being compensated for taking it." — Benjamin Felix: Summarizing the main takeaway on how investors should view climate change within their portfolios. "Owning the brown firms and seeing them through to their greener futures may be a better way to change the world than ignoring the brown firms and saying, 'I'm just going to own the green ones.'" — Benjamin Felix: Counterintuitive proposal for investors who want to align values with impact, using engagement rather than exclusion. "The tails are not the story. The middle is the story. The change in the majority of the population around the world should be the story." — Cameron Passmore (paraphrasing Hans Rosling): Highlighting the core message of Factfulness: focusing on the average progress rather than extreme negative events.

Implications: For investors, climate risk does not require special portfolio tilts; standard diversified portfolios already compensate for it. Those seeking impact should consider engagement through broad market ownership. The evidence supports that markets are efficient in incorporating climate information, so investors should focus on long-term, factor-based strategies rather than reacting to climate narratives.