The Information Content of Second-party Opinions in the Sustainability-linked Bond Market

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

🔬研究者:Provides novel empirical evidence on the signaling value of SPOs in SLBs, informing future studies on green bond integrity and market efficiency.

🏢実務担当者:Highlights that SPO ambition levels may signal emissions performance but not absolute reductions, guiding corporate disclosure and target-setting strategies.

🏛政策担当者:Suggests a potential disconnect between SLB market incentives and decarbonization goals, informing regulatory design for transition finance instruments.

We analyze the information content of second-party opinion (SPO) ambition assessments in the sustainability-linked bond (SLB) market using a novel hand-collected dataset. Issuers of highly ambitious SLBs exhibit slightly larger subsequent reductions in emissions intensity, contain growth in absolute emissions more effectively, are more likely to miss sustainability targets, and earn higher announcement returns around the SPO disclosure date. In contrast, issuers of very low ambition SLBs experience negative returns and largely self-select out of the SLB market. These findings suggest SPO ambition assessments provide a credible signal of firms' commitments to sustainability. However, ambition does not predict reductions in absolute emissions, does not influence SLB pricing, and even among highly ambitious SLBs, announcement returns are largely insensitive to issuers' emissions levels and whether targets are science-based, pointing to a potential disconnect between the SLB market and societal decarbonization objectives.

• semanticscholar https://doi.org/10.2139/ssrn.6351140first seen 2026-05-05 21:50:51