Joint research unit 7235

The impact of stock spams on volatility

Taoufik Bouraoui

This paper is dedicated to study the impact of stock spams through the analysis of the variations of volatility. We use the methodology of event studies on a sample of hundred ten firms. The results show positive and significant changes in volatility during 12 days of the event window; a widening of the variation [lowest price – highest price] was noticed following the consignment of messages by the spammers. The sending of stock spams affected the behaviour of investors, indicating thus that the spamming activity is a lucrative business.

AGENDA

Monday 27 June 2022

Law, Institutions and Economics in Nanterre (LIEN)

Miriam Buiten (St Gallen Univ)

En distanciel à 11H30

From intermediaries to moderators of the internet: Should online platforms be liable?

Monday 27 June 2022

Law, Institutions and Economics in Nanterre (LINK)

Miriam Buiten (St Gallen Univ)

En distanciel à 11H30

From intermediaries to moderators of the internet: Should online platforms be liable?

Thursday 30 June 2022

Doctorants

Zoltán Szücs | Gagnie Pascal Yebarth

Salle 401-402

Le rôle de la police municipale dans la satisfaction des attentes de la population parisienne en termes de tranquillité publique | Politiques publiques et externalités dans les jeux stratégiques de marché

Thursday 30 June 2022

PhD students

Zoltán Szücs | Gagnie Pascal Yebarth

Salle 401-402

Le rôle de la police municipale dans la satisfaction des attentes de la population parisienne en termes de tranquillité publique | Politiques publiques et externalités dans les jeux stratégiques de marché

Friday 1 July 2022

Colloques et Workshops

9th Workshop on Economic Analysis of Litigation

Friday 1 July 2022

Colloques et Workshops

9th Workshop on Economic Analysis of Litigation

Monday 4 July 2022

Colloques et Workshops

Joint Webinar on Environment and Health in Seaport Cities

Monday 4 July 2022

Colloques et Workshops

Webinar conjoint sur l’environnement et la santé dans les villes maritimes

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