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Was Covid-19 a wake-up call on climate risks? Evidence from the greenium

Author

Listed:
  • Danilo Liberati

    (Bank of Italy)

  • Giuseppe Marinelli

    (Bank of Italy)

Abstract

Building on the work by Liberati and Marinelli (2021), this paper presents a study on the greenium, i.e. the negative yield difference between green bonds and their conventional counterparts. We use a security-by-security data set comprising a large sample of green bonds exchanged on the main global security markets, integrated with the microdata employed in official statistics on security holdings and prices. After showing the existence of the greenium, we employ a twofold approach in order to contribute to the literature on this topic. Firstly, we exploit an econometric strategy based on security-level panel regressions and we find strong evidence for the existence of the greenium and for its increase following the Covid-19 shock; nonetheless, after the end of the state of emergency, we find evidence of a rebound of the greenium of different intensities depending on the issuing sector. Finally, we provide econometric evidence for a persistent excess demand in the green bond secondary market through a non-Walrasian disequilibrium model a la Maddala and Nelson (1974).

Suggested Citation

  • Danilo Liberati & Giuseppe Marinelli, 2024. "Was Covid-19 a wake-up call on climate risks? Evidence from the greenium," Questioni di Economia e Finanza (Occasional Papers) 832, Bank of Italy, Economic Research and International Relations Area.
    • Handle: RePEc:bdi:opques:qef_832_24
    as

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    References listed on IDEAS

    as
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    More about this item

    Keywords

    Green bonds; greenium; Covid-19;
    All these keywords.

    JEL classification:

    • C33 - Mathematical and Quantitative Methods - - Multiple or Simultaneous Equation Models; Multiple Variables - - - Models with Panel Data; Spatio-temporal Models
    • G12 - Financial Economics - - General Financial Markets - - - Asset Pricing; Trading Volume; Bond Interest Rates
    • G21 - Financial Economics - - Financial Institutions and Services - - - Banks; Other Depository Institutions; Micro Finance Institutions; Mortgages
    • Q56 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Environment and Development; Environment and Trade; Sustainability; Environmental Accounts and Accounting; Environmental Equity; Population Growth

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