Will Climate Change Crash the Stock Market?

TL;DR

Climate change can put downward pressure on stock valuations, but the transcript does not conclude that it will crash the market. Physical and transition risks can reduce expected cash flows and raise discount rates, while evidence from futures, bonds, and real estate suggests markets already price some climate risk; one study found exposed houses sold at a 7% discount. Read on to understand what this means for green assets and investment decisions.

Transcript

• Climate risk is a concern for many investors. And for good reason, there has been an unprecedented surge in economic development over the last 200 years largely driven by the power of fossil fuels. We've correspondingly seen rising levels of carbon dioxide and other greenhouse gases in our atmosphere and an increase in the global means surface te... Read More

Key Insights

• 👨‍💼 Climate change poses physical and transitional risks to businesses, communities, and the economy, potentially affecting asset valuations.
• 😘 Green assets may hedge climate risk, but they also have lower expected returns due to investor preferences.
• 🏛️ Evidence suggests that climate risk is priced in the market, reflected in various asset classes like weather futures, municipal bonds, real estate, and corporate bonds.
• 😘 Investing in green assets may offer a hedge against climate risk, but it comes with lower expected returns.
• 💚 Total market index funds, rather than focusing only on green companies, may be a more suitable approach to manage climate risk while maximizing returns.
• ✳️ The world's largest asset managers are addressing climate risk through engagement and proxy voting, contributing to the management of climate risks in the market.

Questions & Answers

Q: Will climate change crash the stock market?

The transcript does not conclude that climate change will crash the stock market. It argues that physical and transition risks can reduce expected cash flows and increase discount rates for affected businesses, putting downward pressure on their valuations.

Q: How can climate change affect asset prices?

Physical risks include changing weather patterns, flooding, and previously habitable areas becoming uninhabitable. Transition risks include changing consumer demand and government regulations or taxes, which can reduce expected cash flows and raise the returns investors require.

Q: What is physical climate risk for investors?

Physical climate risk is the potential harm caused by effects such as changing weather patterns, rising temperatures, and flooding. These effects can damage businesses, communities, and the broader economy.

Q: What is transition climate risk?

Transition risk comes from consumer and government responses to climate change. Demand for products with a lower carbon impact, along with emissions regulations or taxes, can create meaningful uncertainty for businesses.

Q: Why might green assets have lower expected returns?

The transcript presents two reasons: investors may accept lower returns because they prefer firms that generate positive externalities, and green assets may hedge climate risk. If climate conditions worsen unexpectedly, demand, regulation, and investor preferences may shift in ways that benefit green firms.

Q: Is climate risk already priced into markets?

The transcript describes evidence that climate risk appears in weather futures, municipal bonds, and real estate prices. For example, a 2020 study found that greater exposure to sea-level rise was associated with higher municipal bond yields, especially for longer-maturity bonds.

Q: What does real estate evidence show about sea-level-rise risk?

A 2019 study found that houses exposed to sea-level rise sold at a 7% discount compared with similar properties without the same exposure. Most of that discount came from houses not expected to face flooding for another 50 years, suggesting a long-term market response.

Q: Should investors overweight green assets to hedge climate risk?

The transcript cautions that overweighting green assets in hopes of profiting from their hedge would be an active bet against market prices. If climate change deteriorates only as expected, green assets should deliver returns that are lower than or equal to those of brown assets under the model discussed.

Summary & Key Takeaways

• Climate change creates physical and transitional risks for businesses, communities, and the economy, potentially affecting asset prices.

• Physical risks include changing weather patterns and areas becoming uninhabitable due to temperature or flooding.

• Transitional risks arise from consumer demands for lower carbon impact and government regulations, creating uncertainty for businesses.