82 documents found, page 1 of 9
IX Regional Helix'25: Book of Extended Abstracts
Fernandes, Paula Odete; Duarte, António; Vaz, Roberto; Scalabrini, Elaine C.B.; Lopes, Isabel Maria; Ferreira, Jessica; Leite, Joaquim; Alves, JorgeOn behalf of the Organising Committee, we would like to extend our sincere thanks to everyone who contributed to the success of the IX International Regional Helix’25 Congress, held from 26th to 28th June at the School of Technology and Management of the Polytechnic Institute of Bragança (IPB), and organised by the Applied Management Research Unit (UNIAG). The event demonstrated the essential role of collaborat...
Learning by Doing Experience: Students’ Motivations and Perceptions of a Blende...
Scalabrini, E.C.B.; Form, Stephan; Moutinho, NunoThis research investigates the learning by doing approach in education, centring on a business simulation game carried out in a Blended Intensive Program (BIP) developed by a European consortium of higher education institutions, named the STARS EU consortium. The program, which involved professors and aspiring entrepreneur students, was designed to equip students with practical business knowledge in a safe and ...
Airline stock market reaction to CrowdStrike IT outage: an event study analysis
Costa, João; Cró, Susana; Moutinho, Nuno; Martins, António MiguelThis study investigates the short-term market effect of CrowdStrike IT outage in the airline industry. Using an event study methodology, we evidence that airline stocks respond significantly negatively to the technology disruption within two days before and after the event day. IT disruptions, by creating friction in daily operations, such as broken schedules, delayed or cancelled flights, negative externalitie...
Stock market effects of corporate malpractices and misconduct: evidence from th...
Albuquerque, Bruno; Martins, António Miguel Valente; Moutinho, NunoThis study used event study methodology to examine the impact Hindenburg Research shortseller reports on targeted firms. The results show negative abnormal returns in firms when those reports reveal bad news about malpractices and misconduct. Our results show a higher negative stock market reaction to the Hindenburg reports when target firms are small, have higher leverage, higher Tobin’s Q, and corporate malpr...
Stock market effects of CrowdStrike IT outage on largest listed hotel companies
Albuquerque, Bruno; Cró, Susana; Moutinho, Nuno; Martins, António MiguelThis study analyses the short-term market effect of CrowdStrike IT outage in the 100 largest worldwide listed hotel companies. Using an event study methodology, the paper analyses how hotel companies are penalized by the market to the biggest IT disruption in history. Our results evidence a statistically significant negative reaction around the event date. This result is explained by the adverse impact caused b...
Presidential elections and secretary appointment: an event study for us biotech...
Martins, António Miguel; Albuquerque, Bruno; Sardinha, Luís; Moutinho, NunoThe aim of this study is to analyse the effect of the 2024 US presidential election and the appointment of the US health secretary to the largest US listed biotechnology and drug firms. Using an event study methodology, we find that President Donald Trump's election had no significant impact on the industry. On the contrary, the results show statistically significant negative stock price reactions around the US...
2024 U.S. presidential elections: An event study for U.S. and non-U.S. fossil f...
Martins, António Miguel; Albuquerque, Bruno; Sardinha, Luís; Moutinho, NunoThis study examines the short-term market effect of Donald Trump' victory in the 2024 US presidential election on largest US and non-US listed worldwide fuel fossil and renewable firms. Employing an event study methodology, we observe a negative and statistically significant stock price reaction for worldwide renewable listed firms. An analysis by economic zones reveals the existence of negative abnormal return...
Stock-term market impact of major cyber-attacks: evidence for the ten most expo...
Martins, António Miguel Valente; Moutinho, NunoThe main focus of this paper is to study empirically the impact of major cyberattacks in the market value of the ten most exposed insurers to cyber risk. Using an event study for 53 global cyberattacks, we observe a negative and statistically significant stock price reaction for insurers around the cyberattack disclosure dates. The increase in the assessed probability of an increase in future payments tends to ...
The interrelation between environmental, social, and governance (ESG) and trans...
Cardoso, Celso Araújo; Moutinho, Nuno; Scalabrini, Elaine C.B.Sustainability has been a central issue in recent decades, leading to the formal integration of the environmental, social and governance (ESG) dimensions by the United Nations in 2004. Although ‘CSR’, ‘sustainability’ and ‘ESG’ are often used interchangeably, ESG provides criteria for assessing sustainability progress. Transparent disclosure of ESG information is crucial to attracting investment and building tr...
2024 U.S. presidential elections: an event study for U.S. and non-U.S. fossil f...
Martins, António Miguel; Albuquerque, Bruno; Sardinha, Luís; Moutinho, Nuno; Martins, António; Albuquerque, Bruno; Sardinha, LuisThis study examines the short-term market effect of Donald Trump’ victory in the 2024 US presidential election on largest US and non-US listed worldwide fuel fossil and renewable firms. Employing an event study meth odology, we observe a negative and statistically significant stock price reaction for worldwide renewable listed firms. An analysis by economic zones reveals the existence of negative abnormal retur...