Sustainable Bond Issuance Grows 50% During First Half
Investors are seeing a major shift in global debt as green and social bond custody reaches EUR 1.84 trillion.
Updated on Oct. 26, 2026 in Economic Indicators
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Euroclear Bank processed over EUR 233 billion in green, social, sustainability, and sustainability-linked (GSSS) bonds during the first half of 2026. This activity helped push total GSSS bond assets under custody to EUR 1.84 trillion as of June 30, 2026.
Why it matters
The rapid expansion of GSSS bonds indicates a significant shift in how institutional investors allocate capital toward sustainable initiatives. For households, this trend reflects a growing integration of environmental and social criteria into the broader global debt markets.
Issuance of GSSS bonds reached over EUR 233 billion in the first half of 2026, marking a 50% increase compared to the first half of 2025. Total holdings under custody hit EUR 1.84 trillion by June 30, 2026, with green bonds specifically seeing an 85% growth rate.
The players
Euroclear Bank
A major international financial services company that provides settlement and custody services for government and corporate bonds.
The details
The growth in GSSS bonds is driven by rising activity across major classes including green, social, and sustainability-linked debt. More than half of these bonds utilize the international Eurobond structure, which facilitates cross-border investment. The euro remains the most common currency for these holdings, followed by the US dollar and British pound, reflecting global demand for sustainable fixed-income products.
Timeline
H1 2025 served as the baseline period for bond issuance growth comparisons.
H1 2026 saw the issuance of over EUR 233 billion in GSSS bonds.
June 30, 2026, marked the date when total GSSS bond custody reached EUR 1.84 trillion.
Money Landscape
The surge in GSSS bond issuance during the first half of 2026 represents a sharp acceleration beyond the market stabilization period of 2025. This growth signals that sustainable finance is transitioning from a niche segment to a core component of the global fixed-income market.
The expansion of these bond classes suggests that more institutional capital is flowing toward projects with defined sustainability goals. Investors may see more fixed-income options with ESG mandates, so discuss with a financial professional whether these assets fit your risk profile.
The takeaway
The rapid growth in sustainable bonds reflects a major shift in how debt markets support global environmental and social goals. Investors should review their fixed-income holdings to understand how much exposure they have to these evolving asset classes as they plan their long-term portfolios.
Further reading
For more on how global financial shifts impact your savings and broader markets, visit our Economic Indicators section.
Source note: This article includes information reported by Markets Media.
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