Does Social Network Sentiment Influence S&P 500 Environmental & Socially Responsible Index?

Abstract

The influence of social network sentiment on stock market indices and companies has been proven in several studies. However, the influence of social network sentiment on sustainability indices and sustainable companies has not been analyzed so far. Therefore, this study analyzed the influence of social network sentiment on sustainability indices (S&P 500 Environmental & Socially Responsible Index) and focused on variations of this influence on sustainable and non-sustainable companies, namely, in companies included in the Information Technology sector. To this end, two methodologies were used: GARCH (1,1) models and logit-probit models. The results showed that social network sentiment influences S&P 500 Environmental & Socially Responsible Index's volatility; this influence was greater than the influence of social network sentiment when considering the S&P 500 Index. Additionally, the results showed that social network sentiment influences sustainable companies' returns but had no effect on unsustainable companies' returns. These results highlighted the importance of managing the companies' profiles in social networks and their corporate image in general, because investors will consider these aspects to design their investment strategies.

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Inclusions in and Exclusions from the S&P 500 Environmental and Socially Responsible Index: A Fuzzy-Set Qualitative Comparative Analysis

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Dilemas na dosagem de etanol post mortem em vítimas de acidentes de trânsito

“…A dosagem de álcool no sangue (alcoolemia) é usualmente a mais analisada em cadáveres, mas sua indisponibilidade leva ao uso de outros espécimes, como a urina, o líquor, a bile e o humor vítreo [30]. Apesar de o sangue femoral ser considerado o espécime recomendado para a análise, muitos patologistas preferem coletar o sangue cardíaco como substituto [30,31]. L. Jungmann (2011) descreveu um caso de suicídio por intoxicação alcoólica e demonstrou que a alcoolemia diferiu em dois sítios coletados -sendo a do sangue cardíaco significantemente maior que o da femoral, diante da difusão da molécula advinda do conteúdo gástrico, o que destaca a importância da retirada de amostras sanguíneas de locais longe do estômago e, se possível, a comparação entre os diferentes sítios [32,33].…”

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