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The impact of climate policy on U.S. environmentally friendly firms: A firm-level examination of stock return, volatility, volume, and connectedness

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  • Pham, Linh
  • Hao, Wei
  • Truong, Ha
  • Trinh, Hai Hong

Abstract

This paper investigates the green stock market reaction to climate policy events associated with the Paris Agreement and the U.S. presidential elections. We document abnormal returns, volatility and volume reactions to climate policy events among green stocks. However, the magnitude of the reactions varies between the tightening and loosening of climate policy and across subgroups of the green stock markets. Our connectedness analysis further investigates the spillover patterns among individual green stocks and confirms their heterogeneous natures when responding to the occurrence of these climate policy events. By constructing a minimum connectedness portfolio based on the estimated connectedness among these green stocks, we find that investors can substantially reduce their risks. Our findings have strong implications for policy makers in designing policies to effectively promote green investments and mitigate climate change.

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  • Pham, Linh & Hao, Wei & Truong, Ha & Trinh, Hai Hong, 2023. "The impact of climate policy on U.S. environmentally friendly firms: A firm-level examination of stock return, volatility, volume, and connectedness," Energy Economics, Elsevier, vol. 119(C).
    • Handle: RePEc:eee:eneeco:v:119:y:2023:i:c:s0140988323000622
    DOI: 10.1016/j.eneco.2023.106564
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    Cited by:

    1. Nguyen, Dat Thanh & Tran, Vuong Thao & Phan, Dinh Hoang Bach, 2023. "Does green activity impact stock price crash risk? The role of climate risk," Finance Research Letters, Elsevier, vol. 55(PA).
    2. Wang, Junling & Cheng, Siyu & Rong, Xueyun & Xu, Xin, 2024. "Nonlinear impact of climate transition risks on green stock performance: Perspectives from multiscale and lag effects," International Review of Financial Analysis, Elsevier, vol. 94(C).
    3. Dai, Zhifeng & Hu, Juan & Liu, Xinheng & Yang, Mi, 2024. "ynamic time-domain and frequency-domain spillovers and portfolio strategies between climate change attention and energy-relevant markets," Energy Economics, Elsevier, vol. 134(C).
    4. Yan, Wan-Lin & Cheung, Adrian (Wai Kong), 2024. "Connectedness among Chinese climate policy uncertainty, exchange rate, Chinese and international crude oil markets: Insights from time and frequency domain analyses of high order moments," The North American Journal of Economics and Finance, Elsevier, vol. 73(C).
    5. Chen, Deyang & Zeng, Zheyu & Chen, Yunyue, 2024. "Heterogeneous impacts of multiple climate policies on the chinese stock market," Finance Research Letters, Elsevier, vol. 60(C).
    6. Wang, Kai-Hua & Wang, Zu-Shan & Yunis, Manal & Kchouri, Bilal, 2023. "Spillovers and connectedness among climate policy uncertainty, energy, green bond and carbon markets: A global perspective," Energy Economics, Elsevier, vol. 128(C).
    7. Chollete, Lorán & Hughen, Keener & Lu, Ching-Chih & Peng, Weijia, 2024. "Assessing the volatility of green firms," Finance Research Letters, Elsevier, vol. 64(C).
    8. Wellalage, Nirosha & Reddy, Krishna & Wallace, Damien, 2023. "Environmental performance and the role of government support: Evidence from the recent COVID-19 pandemic," Finance Research Letters, Elsevier, vol. 58(PA).
    9. Michael D. Plante, 2023. "Investing in the Batteries and Vehicles of the Future: A View Through the Stock Market," Working Papers 2314, Federal Reserve Bank of Dallas, revised 25 Mar 2024.

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    More about this item

    Keywords

    Clean energy; Climate policy; Firm-level analysis; Event study; Connectedness; Portfolio implications;
    All these keywords.

    JEL classification:

    • G0 - Financial Economics - - General
    • Q0 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - General
    • Q2 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation
    • Q4 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Energy

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