In recent years, a plurality of different governance initiatives has emerged that are designed to expand the disclosure of environmental risk within financial markets. The emergence of these initiatives represents an important policy development, and it has the potential to reduce environmental risk within the financial sector by incentivizing investments in sustainable economic activity capable of long-term value creation. Unfortunately, environmental risk disclosure has yet to be assessed as a field of governance activity in addition to its potential effectiveness in improving disclosure within financial markets. Jason Thistlethwaite addresses this gap by describing environmental risk disclosure as a “regime complex,” defined by a field of fragmented but related governance initiatives that lacks an overarching hierarchy. While this regime complex does reveal evidence for policy convergence among different initiatives, it lacks the enforcement necessary to produce a coherent and comparable disclosure and contributes to uncertainty within the financial sector over the impact of environmental risk. The paper concludes that this uncertainty justifies an expanded role of international financial regulations in establishing a mandatory and harmonized disclosure standard that can be applied across different domestic jurisdictions.