In the wake of a compelling societal shift and the subsequent widespread response across multiple industries, Environmental, Social, and Governance (ESG) factors have emerged as a pivotal subject in scholarly literature. To gauge the significance of these contributions and facilitate objective exploration in future research, we employ bibliometric techniques. Thus, we identify the relevant authors and journals, and depict the evolution in the themes and pillars of the intellectual framework underpinning the topic. Our analysis covers 594 articles from 2007 to 2022, divided into two distinct periods. In the first period, the pillars are centered on contextualizing theories, the impact in terms of financial‐related performance, and the ethical implications within the domain of corporate social responsibility. In the subsequent period, there is a notable progression towards reinforcing theoretical foundations. The pillars shift towards more practical implications, focusing on challenges associated with investing based on ESG criteria, guiding stakeholders in adapting to this paradigm, and addressing risks tied to its implementation. Financial performance, disclosure in reporting, and socially responsible investments remain crucial matters, and the analysis of the environmental issues outnumber social, and governance ones in both periods. We discuss the potential implications and further lines of research.

This paper deals with the analysis of the persistence in the Harmonized Indices of Consumer Prices in France, Germany, Italy, and Spain. The degree of persistence is measured through fractional integration or I (d) techniques, using monthly data from January 2010 to February 2023. We first conducted the analysis with data ending in December 2019, that is, with data prior to the COVID-19 pandemic. Then, we extended the sample, first up to December 2021 and finally to February 2023. Our results show that the findings of our series are highly persistent, with values of the differencing parameter about one or higher than one in the majority of cases. In fact, mean reversion is only observed in the case of Germany with pre-pandemic data. Generally, we observed an increase in the degree of persistence of the series as a consequence of both the COVID-19 pandemic and the Russia–Ukraine war, with the only exception being Spain, where we observe a reduction in the order of integration when including 2022–2023 data.

This paper examines the dynamic disequilibrium between value investing and growth strategies, focusing on the structural changes induced by the COVID-19 pandemic. Using fractional integration and Markov-switching dynamic regression (MS-DR) models, we analyze persistence and regime shifts. The results reveal that, prior to March 2020, the return difference was in a regime of high persistence and no reversion to the mean, making the deviations long-lasting. After the pandemic, the system shifted to a regime of moderate persistence with reversion to the mean, indicating that the return differences now tend to correct over time. This regime shift, confirmed by the Markov switching model, highlights a permanent change in the dynamics of value and growth strategies, which significantly affects their long-term equilibrium.