Stock market reaction to the announcement of Morocco’s voluntary carbon market: An event study
-
DOIhttp://dx.doi.org/10.21511/ee.17(4).2026.02
-
Article InfoVolume 17 2026, Issue #4, pp. 20–31
- 23 Views
-
2 Downloads
This work is licensed under a
Creative Commons Attribution 4.0 International License
Type of the article: Research Article
Abstract
The growing development of voluntary carbon markets has raised increasing interest in understanding how financial markets respond to climate-related policy announcements, particularly in emerging economies. This study investigates the stock market reaction to the official announcement of the operational launch of Morocco’s voluntary carbon market on September 24, 2024. The analysis applies the event study methodology to a sample of the eight largest companies listed on the Casablanca Stock Exchange to estimate expected returns and abnormal returns over an event window of [–4; +5].
The results indicate that the announcement did not generate statistically significant abnormal stock market reactions. On the event day (t = 0), the average abnormal return (AAR) was –0.238% (t = –1.006; p = 0.348), while the cumulative abnormal return (CAR) over the [–4; +5] event window reached 1.00% (t = 0.615; p = 0.550), indicating the absence of a statistically significant market response. A robustness analysis using an alternative event window [–3; +3] produced similar results (CAR = 1.52%, t = 1.494; p = 0.186), confirming the stability of our finding.
Overall, the evidence suggests that the operational launch of Morocco’s voluntary carbon market did not constitute value-relevant information capable of significantly influencing investors’ expectations or short-term market valuation, reflecting the early stage of development of the country’s voluntary carbon market.
- Keywords
-
JEL Classification (Paper profile tab)G14, G15, Q54, Q56
-
References20
-
Tables6
-
Figures1
-
- Figure 1. Evolution of average abnormal returns during the event window
-
- Table 1. Characteristics of the sample
- Table 2. Identification of the event
- Table 3. Market model estimation results
- Table 4. Daily Average Returns (AAR) during the event window
- Table 5. Cumulative Abnormal Returns (CARs) over the event window
- Table 6. Robustness analysis using alternative event windows
-
- Africa Carbon Markets Initiative. (2024). Africa Carbon Markets Initiative (ACMI) status and outlook report 2024–25.
- Bolton, P., & Kacperczyk, M. (2021). Do investors care about carbon risk? Journal of Financial Economics, 142(2), 517-549.
- Brown, S. J., & Warner, J. B. (1985). Using daily stock returns: The case of event studies. Journal of Financial Economics, 14(1), 3-31.
- Clark, G. L., Feiner, A., & Viehs, M. (2015). From the stockholder to the stakeholder: How sustainability can drive financial outperformance. University of Oxford & Arabesque Partners.
- Ecosystem Marketplace. (2021). State of the voluntary carbon markets 2021: Market in motion. Forest Trends Association.
- Fama, E. F. (1970). Efficient capital markets: A review of theory and empirical work. The Journal of Finance, 25(2), 383-417.
- Fama, E. F., Fisher, L., Jensen, M. C., & Roll, R. (1969). The adjustment of stock prices to new information. International Economic Review, 10(1), 1-21.
- Fisher-Vanden, K., & Thorburn, K. S. (2011). Voluntary corporate environmental initiatives and shareholder wealth. Journal of Environmental Economics and Management, 62(3), 430-445.
- Forest Peoples Programme. (2023). Carbon markets, forests and rights: An introductory series for indigenous peoples and communities.
- Friede, G., Busch, T., & Bassen, A. (2015). ESG and financial performance: Aggregated evidence from more than 2000 empirical studies. Journal of Sustainable Finance & Investment, 5(4), 210-233.
- Gnaoui, I., & Moutahaddib, A. (2025). Morocco’s voluntary carbon market: Towards a low-carbon future and an energy transition. In Proceedings of the International Conference on Multidisciplinary Research in Management and Economics (ICMRME 2025) (pp. 515-532). Atlantis Press.
- Intergovernmental Panel on Climate Change (IPCC). (2021). Climate change 2021: The physical science basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change. In V. Masson-Delmotte, P. Zhai, A. Pirani, S. L. Connors, C. Péan, S. Berger, N. Caud, Y. Chen, L. Goldfarb, M. I. Gomis, M. Huang, K. Leitzell, E. Lonnoy, J. B. R. Matthews, T. K. Maycock, T. Waterfield, O. Yelekçi, R. Yu, & B. Zhou (Eds.). Cambridge University Press.
- Keele, D. M., & DeHart, S. (2011). Partners of USEPA Climate Leaders: An event study on stock performance. Business Strategy and the Environment, 20(8), 485-497.
- MacKinlay, A. C. (1997). Event studies in economics and finance. Journal of Economic Literature, 35(1), 13-39.
- Medias24. (2024, September 24). CFCA et la CDG s’allient pour un marché volontaire du carbone à portée régionale [CFCA and CDG join forces for a regional voluntary carbon market]. (In French).
- Ramiah, V., Martin, B., & Moosa, I. (2013). How does the stock market react to the announcement of green policies? Journal of Banking & Finance, 37(5), 1747-1758.
- Stavins, R. N. (2008). A meaningful U.S. cap-and-trade system to address climate change (FEEM Working Paper No. 82.2008).
- United Nations Framework Convention on Climate Change (UNFCCC). (2021a). Stratégie bas carbone à long terme Maroc 2050 [Long-term low-carbon strategy Morocco 2050]. United Nations Framework Convention on Climate Change. Ministère de la Transition énergétique et du Développement durable.
- United Nations Framework Convention on Climate Change (UNFCCC). (2021b). Contribution déterminée au niveau national – actualisée (CDN-Maroc) [Updated nationally determined contribution of Morocco]. Ministère de la Transition énergétique et du Développement durable.
- Weng, C. K., & Boehmer, K. (2006). Launching of ISO 14064 for greenhouse gas accounting and verification. ISO Management Systems, 15(2), 14-16.


