Financial Market Effectiveness of Sustainability Initiatives in Green Bond Markets: Evidence Synthesis and Research Framework

ABSTRACT This research synthesizes prior evidence on the effectiveness of financial market sustainability initiatives (FMSIs) in green bond markets. Our analysis of 45 peer‐reviewed studies, including 42 quantitative empirical studies with 169 codable FMSI–outcome relationships, shows that FMSIs are most consistently associated with favorable financial market outcomes when they improve credibility, comparability, or interpretability of green bond information. Pricing evidence differs between primary and secondary markets. Across both segments, greenness assurance provides the broadest pricing evidence base, whereas regulation and policy show the most favorable evidence balance on a narrower base. Outside pricing, evidence remains limited for issuer behavior, relative green allocation, and environmental attribution. We propose a life cycle–based research framework linking information and agency problems to five stages of the green bond process and identify future research directions concerning FMSI interactions, institutional conditions, and participation costs. Our findings provide design implications for issuers, investors, regulators, and information intermediaries.