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Contribution Details

Type Working Paper
Scope Discipline-based scholarship
Title Who Pays for Sustainability? An Analysis of Sustainability-Linked Bonds
Organization Unit
Authors
  • Julian Kölbel
  • Adrien-Paul Lambillon
Language
  • English
Institution University of Zurich
Series Name Swiss Finance Institute Research Paper
Number 23-07
Number of Pages 47
Date 2023
Abstract Text We examine the novel phenomenon of sustainability-linked bonds (SLBs). These bonds’ coupon is linked to the issuer achieving a predetermined sustainability performance target. We estimate the yield differential between SLBs and non-sustainable counterfactuals by matching bonds from the same issuer. Our results show that in most cases investors pay for the improvement in sustainability, while issuers benefit from a sustainability premium. Our analysis suggests that the sustainability premium is larger for bonds with a higher coupon step-up and for callable bonds. We also show that there is a ‘free lunch’ for some SLB issuers, as their financial savings are higher than the potential penalty, and they have a call option to reduce this penalty. While our findings suggest that most SLBs incentivize sustainability improvements by offering a lower cost of capital, some companies that do not benefit from a sustainability premium seem to issue SLBs to signal their commitment to sustainability targets. The ‘free lunch’ however suggests that SLBs can also be a form of greenwashing, when they are issued purely for financial optimization without a real commitment to carry out sustainability improvements.
Free access at DOI
Digital Object Identifier 10.2139/ssrn.4007629
Other Identification Number merlin-id:22989
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