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Long-term correlation between the green and conventional bond markets: The roles of categorical EPU indices and structural changes

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  • Zhang, Hongwei
  • Wei, Shiyao
  • Guo, Yaoqi

Abstract

This study investigates the dynamic correlation between the green and conventional bond markets affected by different categories of economic policy uncertainty (EPU) using the DCC-MIDAS-X model. The results show that EPU has a significant negative impact on the long-term green-conventional bond correlation and most of the categorical EPU indices exhibit a negative impact on the long-term correlation. Furthermore, the study reveals structural changes during the COVID-19 pandemic and incorporates them into the DCC-MIDAS-X model, uncovering additional negative effect on the impact of some categories of EPU. Finally, the study examines the risk management performance using green and conventional assets. The results demonstrate that the green bond can be regarded as an efficient diversification tool for conventional bond assets and incorporating different categorical indices causes different effects on the efficiency. These findings offer valuable insights for investors and policymakers in mitigating risk across green and conventional bond markets under the period of rising EPU and frequent structural changes.

Suggested Citation

  • Zhang, Hongwei & Wei, Shiyao & Guo, Yaoqi, 2025. "Long-term correlation between the green and conventional bond markets: The roles of categorical EPU indices and structural changes," Research in International Business and Finance, Elsevier, vol. 77(PA).
  • Handle: RePEc:eee:riibaf:v:77:y:2025:i:pa:s0275531925001382
    DOI: 10.1016/j.ribaf.2025.102882
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    as
    1. Pham, Linh & Nguyen, Canh Phuc, 2022. "How do stock, oil, and economic policy uncertainty influence the green bond market?," Finance Research Letters, Elsevier, vol. 45(C).
    2. Guo, Dong & Zhou, Peng, 2021. "Green bonds as hedging assets before and after COVID: A comparative study between the US and China," Energy Economics, Elsevier, vol. 104(C).
    3. Arif, Muhammad & Naeem, Muhammad Abubakr & Farid, Saqib & Nepal, Rabindra & Jamasb, Tooraj, 2022. "Diversifier or more? Hedge and safe haven properties of green bonds during COVID-19," Energy Policy, Elsevier, vol. 168(C).
    4. Tareq Saeed & Elie Bouri & Dang Khoa Tran, 2020. "Hedging Strategies of Green Assets against Dirty Energy Assets," Energies, MDPI, vol. 13(12), pages 1-17, June.
    5. Gao, Yang & Li, Yangyang & Wang, Yaojun, 2021. "Risk spillover and network connectedness analysis of China’s green bond and financial markets: Evidence from financial events of 2015–2020," The North American Journal of Economics and Finance, Elsevier, vol. 57(C).
    6. Apergis, Nicholas, 2023. "The connectedness between green and conventional bond yields during the COVID-19 crisis: The role of the vaccination process," Economics Letters, Elsevier, vol. 224(C).
    7. Yousfi, Mohamed & Ben Zaied, Younes & Ben Cheikh, Nidhaleddine & Ben Lahouel, Béchir & Bouzgarrou, Houssem, 2021. "Effects of the COVID-19 pandemic on the US stock market and uncertainty: A comparative assessment between the first and second waves," Technological Forecasting and Social Change, Elsevier, vol. 167(C).
    8. Ma, Rufei & Sun, Bianxia & Zhai, Pengxiang & Jin, Yi, 2021. "Hedging stock market risks: Can gold really beat bonds?," Finance Research Letters, Elsevier, vol. 42(C).
    9. John Cotter & Jim Hanly, 2012. "Hedging effectiveness under conditions of asymmetry," The European Journal of Finance, Taylor & Francis Journals, vol. 18(2), pages 135-147, February.
    10. Flammer, Caroline, 2021. "Corporate green bonds," Journal of Financial Economics, Elsevier, vol. 142(2), pages 499-516.
    11. Zhang, Dayong & Hu, Min & Ji, Qiang, 2020. "Financial markets under the global pandemic of COVID-19," Finance Research Letters, Elsevier, vol. 36(C).
    12. Baeck, E.G. & Brock, W.A., 1992. "A Nonparametric Test for Independence of a Multivariate Time Series," Working papers 9204, Wisconsin Madison - Social Systems.
    13. Dina Azhgaliyeva & Zhanna Kapsalyamova, 2023. "Policy support in promoting green bonds in Asia: empirical evidence," Climate Policy, Taylor & Francis Journals, vol. 23(4), pages 430-445, April.
    14. Pham, Linh, 2021. "Frequency connectedness and cross-quantile dependence between green bond and green equity markets," Energy Economics, Elsevier, vol. 98(C).
    15. Papadamou, Stephanos & Fassas, Athanasios P. & Kenourgios, Dimitris & Dimitriou, Dimitrios, 2021. "Flight-to-quality between global stock and bond markets in the COVID era," Finance Research Letters, Elsevier, vol. 38(C).
    16. Shoaib Ali & Imran Yousaf & Zaghum Umar, 2022. "Infectious disease (COVID-19)-related uncertainty and the safe-haven features of bonds markets," Review of Behavioral Finance, Emerald Group Publishing Limited, vol. 15(4), pages 477-487, February.
    17. Reboredo, Juan C., 2018. "Green bond and financial markets: Co-movement, diversification and price spillover effects," Energy Economics, Elsevier, vol. 74(C), pages 38-50.
    18. Su, Tong & Zhang, Zuopeng (Justin) & Lin, Boqiang, 2022. "Green bonds and conventional financial markets in China: A tale of three transmission modes," Energy Economics, Elsevier, vol. 113(C).
    19. Scott R. Baker & Nicholas Bloom & Steven J. Davis, 2016. "Measuring Economic Policy Uncertainty," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 131(4), pages 1593-1636.
    20. Christian Conrad & Onno Kleen, 2020. "Two are better than one: Volatility forecasting using multiplicative component GARCH‐MIDAS models," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 35(1), pages 19-45, January.
    21. Guo, Yaoqi & Deng, Yiwen & Zhang, Hongwei, 2023. "How do composite and categorical economic policy uncertainties affect the long-term correlation between China's stock and conventional/green bond markets?," Finance Research Letters, Elsevier, vol. 57(C).
    22. Nguyen, Thi Thu Ha & Naeem, Muhammad Abubakr & Balli, Faruk & Balli, Hatice Ozer & Vo, Xuan Vinh, 2021. "Time-frequency comovement among green bonds, stocks, commodities, clean energy, and conventional bonds," Finance Research Letters, Elsevier, vol. 40(C).
    23. Naeem, Muhammad Abubakr & Farid, Saqib & Ferrer, Román & Shahzad, Syed Jawad Hussain, 2021. "Comparative efficiency of green and conventional bonds pre- and during COVID-19: An asymmetric multifractal detrended fluctuation analysis," Energy Policy, Elsevier, vol. 153(C).
    24. Yonghong Jiang & Gengyu Tian & Yiqi Wu & Bin Mo, 2022. "Impacts of geopolitical risks and economic policy uncertainty on Chinese tourism‐listed company stock," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 27(1), pages 320-333, January.
    25. Fang, Libing & Yu, Honghai & Li, Lei, 2017. "The effect of economic policy uncertainty on the long-term correlation between U.S. stock and bond markets," Economic Modelling, Elsevier, vol. 66(C), pages 139-145.
    26. Robert F. Engle & Eric Ghysels & Bumjean Sohn, 2013. "Stock Market Volatility and Macroeconomic Fundamentals," The Review of Economics and Statistics, MIT Press, vol. 95(3), pages 776-797, July.
    27. Sandra Rousseau & Nick Deschacht, 2020. "Public Awareness of Nature and the Environment During the COVID-19 Crisis," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 76(4), pages 1149-1159, August.
    28. Linh Pham, 2016. "Is it risky to go green? A volatility analysis of the green bond market," Journal of Sustainable Finance & Investment, Taylor & Francis Journals, vol. 6(4), pages 263-291, October.
    29. Choudhury, Tonmoy & Kinateder, Harald & Neupane, Biwesh, 2022. "Gold, bonds, and epidemics: A safe haven study," Finance Research Letters, Elsevier, vol. 48(C).
    30. Charles T. Howard & Louis J. D'Antonio, 1994. "The cost of hedging and the optimal hedge ratio," Journal of Futures Markets, John Wiley & Sons, Ltd., vol. 14(2), pages 237-258, April.
    31. Boqiang Lin & Tong Su, 2023. "Uncertainties and green bond markets: Evidence from tail dependence," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 28(4), pages 4458-4475, October.
    32. Danny Contractor & Faruk Balli & Indrit Hoxha, 2023. "Market reaction to macroeconomic anouncements: green vs conventional bonds," Applied Economics, Taylor & Francis Journals, vol. 55(15), pages 1637-1662, March.
    33. Dong, Xiyong & Xiong, Youlin & Nie, Siyue & Yoon, Seong-Min, 2023. "Can bonds hedge stock market risks? Green bonds vs conventional bonds," Finance Research Letters, Elsevier, vol. 52(C).
    34. Mensi, Walid & Naeem, Muhammad Abubakr & Vo, Xuan Vinh & Kang, Sang Hoon, 2022. "Dynamic and frequency spillovers between green bonds, oil and G7 stock markets: Implications for risk management," Economic Analysis and Policy, Elsevier, vol. 73(C), pages 331-344.
    35. Turhan, M. Ibrahim & Sensoy, Ahmet & Ozturk, Kevser & Hacihasanoglu, Erk, 2014. "A view to the long-run dynamic relationship between crude oil and the major asset classes," International Review of Economics & Finance, Elsevier, vol. 33(C), pages 286-299.
    36. Ping Wei & Yinshu Qi & Xiaohang Ren & Kun Duan, 2022. "Does Economic Policy Uncertainty Affect Green Bond Markets? Evidence from Wavelet-Based Quantile Analysis," Emerging Markets Finance and Trade, Taylor & Francis Journals, vol. 58(15), pages 4375-4388, December.
    37. Sakurai, Yuji & Kurosaki, Tetsuo, 2020. "How has the relationship between oil and the US stock market changed after the Covid-19 crisis?," Finance Research Letters, Elsevier, vol. 37(C).
    38. Yu, Lean & Li, Jingjing & Tang, Ling & Wang, Shuai, 2015. "Linear and nonlinear Granger causality investigation between carbon market and crude oil market: A multi-scale approach," Energy Economics, Elsevier, vol. 51(C), pages 300-311.
    39. Colacito, Riccardo & Engle, Robert F. & Ghysels, Eric, 2011. "A component model for dynamic correlations," Journal of Econometrics, Elsevier, vol. 164(1), pages 45-59, September.
    40. Inzamam Ul Haq & Supat Chupradit & Chunhui Huo, 2021. "Do Green Bonds Act as a Hedge or a Safe Haven against Economic Policy Uncertainty? Evidence from the USA and China," IJFS, MDPI, vol. 9(3), pages 1-18, August.
    41. Adekoya, Oluwasegun B. & Oliyide, Johnson A. & Asl, Mahdi Ghaemi & Jalalifar, Saba, 2021. "Financing the green projects: Market efficiency and volatility persistence of green versus conventional bonds, and the comparative effects of health and financial crises," International Review of Financial Analysis, Elsevier, vol. 78(C).
    42. Broadstock, David C. & Cheng, Louis T.W., 2019. "Time-varying relation between black and green bond price benchmarks: Macroeconomic determinants for the first decade," Finance Research Letters, Elsevier, vol. 29(C), pages 17-22.
    43. Cui, Tianxiang & Suleman, Muhammad Tahir & Zhang, Hongwei, 2022. "Do the green bonds overreact to the COVID-19 pandemic?," Finance Research Letters, Elsevier, vol. 49(C).
    44. repec:eee:finlet:v:24:y:2018:i:c:p:56-63 is not listed on IDEAS
    45. Fang, Libing & Yu, Honghai & Huang, Yingbo, 2018. "The role of investor sentiment in the long-term correlation between U.S. stock and bond markets," International Review of Economics & Finance, Elsevier, vol. 58(C), pages 127-139.
    46. Jushan Bai & Pierre Perron, 2003. "Computation and analysis of multiple structural change models," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 18(1), pages 1-22.
    47. Jin, Jiayu & Han, Liyan & Wu, Lei & Zeng, Hongchao, 2020. "The hedging effect of green bonds on carbon market risk," International Review of Financial Analysis, Elsevier, vol. 71(C).
    48. Tian, Jinfang & Yu, Longguang & Xue, Rui & Zhuang, Shan & Shan, Yuli, 2022. "Global low-carbon energy transition in the post-COVID-19 era," Applied Energy, Elsevier, vol. 307(C).
    49. Pham, Linh & Cepni, Oguzhan, 2022. "Extreme directional spillovers between investor attention and green bond markets," International Review of Economics & Finance, Elsevier, vol. 80(C), pages 186-210.
    50. Sadorsky, Perry, 2014. "Modeling volatility and correlations between emerging market stock prices and the prices of copper, oil and wheat," Energy Economics, Elsevier, vol. 43(C), pages 72-81.
    51. He, Feng & Feng, Yaqian & Hao, Jing, 2022. "Information disclosure source, investors’ searching and stock price crash risk," Economics Letters, Elsevier, vol. 210(C).
    52. Kojić, Milena & Mitić, Petar & Schlüter, Stephan & Rakić, Slobodan, 2024. "Complex non-linear relationship between conventional and green bonds: Insights amidst COVID-19 and the RU–UA conflict," Journal of Behavioral and Experimental Finance, Elsevier, vol. 43(C).
    53. Conrad, Christian & Loch, Karin & Rittler, Daniel, 2014. "On the macroeconomic determinants of long-term volatilities and correlations in U.S. stock and crude oil markets," Journal of Empirical Finance, Elsevier, vol. 29(C), pages 26-40.
    54. Mariya Gubareva & Zaghum Umar & Tamara Teplova & Xuan Vinh Vo, 2023. "Flights-to-quality from EM Bonds to safe-haven US Treasury Securities: A time-frequency Analysis," Emerging Markets Finance and Trade, Taylor & Francis Journals, vol. 59(2), pages 338-362, January.
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