ESG Currents
Debating Whether Climate Risk Is Already Priced In
Why It Matters
Understanding if climate risk is fully priced is crucial for investors, policymakers, and companies to allocate capital wisely and avoid sudden, disruptive repricing. As regulators tighten climate‑risk supervision and research suggests possible underestimation of losses, the episode offers timely insight into the financial system’s readiness for a low‑carbon transition.
Key Takeaways
- •Proponents argue markets already embed climate risk information.
- •Critics cite ECB, BoE, BIS findings of widespread mispricing.
- •Deep uncertainty and long‑term horizons hinder accurate pricing.
- •Research shows equity losses could be 2.5‑3.5× higher.
- •Investor mandates and benchmarks often discount long‑dated climate risks.
Pulse Analysis
The Bloomberg-hosted Oxford-style debate asked whether climate risk is already priced into asset values for investors who care about returns. Host Grace Osborne introduced Dr. Jacob Tomai of Thea Finance Labs, who argued that abundant climate data, strong green-technology performance and investor surveys prove that both physical and transition risks are reflected in market prices. Opposing him, Dr.
Ben Caldicott of the Oxford Sustainable Finance Group contended that systematic gaps remain, citing central-bank stress tests and sovereign-bond studies that reveal substantial under-pricing. Tomai highlighted the 2025 outperformance of green-technology equities, rising insurance premiums in climate-exposed regions, and a Bloomberg-wide survey of over 100 investors that showed consensus on an inevitable transition. He pointed to academic work from the European Central Bank, SOAS and Imperial College linking sovereign risk spreads to climate exposure, and argued that the 'carbon bubble' has largely deflated as renewable adoption accelerates. In his view, the market's information flow is now sufficient for investors to price climate risk accurately. These signals have already shifted cost of capital toward greener projects.
Caldicott countered with evidence that 80% of Eurozone banks lacked basic climate-risk frameworks in the ECB's 2022 stress test, and that the Bank of England found ten-fold valuation differences for the same counterparties. 5× higher than standard models. He argued that deep uncertainty, short-term benchmarks and ambiguous probability distributions prevent markets from fully internalising long-dated climate threats, leaving investors exposed to abrupt repricing. Regulators therefore push for mandatory climate disclosures to close the pricing gap.
Episode Description
Two experts, one question: Is climate risk already priced in? On this week’s episode of the ESG Currents podcast, Bloomberg Intelligence EMEA ESG integration analyst Grace Osborne hosts an Oxford-style debate. Dr. Jakob Thomae, co-founder and CEO of Theia Finance Labs, argues for the motion, while Dr. Ben Caldecott, founding director of the Oxford Sustainable Finance Group and a coordinating lead author on finance for the IPCC’s Seventh Assessment Report, argues against it. From green tech outperformance to central-bank stress tests, the signals are mixed. Greater information availability may help investors price climate risk, but radical uncertainty — from second-order effects to tipping points — remains far harder to capture. This episode was recorded on March 3.
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