Are green bonds less liquid?

The evidence says otherwise.

Once considered a niche innovation, green bonds have evolved into a core segment of global fixed income markets. Over the past two decades, they have scaled rapidly in size, broadened their investor base and integrated seamlessly into market infrastructure.

Today, the sustainable bond market has reached an estimated USD 8.1 trillion* in cumulative issuance. Green bonds are no longer an outlier – they are increasingly aligned with conventional instruments in terms of pricing, trading activity and liquidity.

For issuers, this means the ability to raise capital at scale across longer maturities.
For investors, it reinforces the case for incorporating green bonds into core portfolios not as a specialist allocation, but as a mainstream one.

Backed by Euroclear data and academic research, this paper challenges long-held assumptions on liquidity and maturity – showing just how far the market has come.

*Source: Sustainable Debt Global State of the Market 2025 prepared by the Climate Bonds Initiative.

“At a time when sustainable finance requires ever greater ambition to address the risks posed by climate change, investors and issuers can be reassured that green assets have no systemic disadvantage compared to conventional bonds. They can focus on the impact of, and the return on, their investments.”

Paul Symons, Chief Sustainability Officer of the Euroclear group.

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