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Response of information technology companies in Europe to the World Health Organization's announcement of the COVID-19 pandemic

Lyroudi, Katerina; Morina, Fatbardha; Balomenou, Chrysanthi - In: Proceedings of the ENTRENOVA - ENTerprise REsearch … 7 (2021) 1, pp. 96-106

From the beginning of 2020, the whole world has been shaken by a contagious disease called Covid-19, its actual name being SARS-CoV-2. It first appeared in China, in Wuhan, Hubei Province, in December 2019, and the World Health Organization (WHO) was informed about it on the 31st of December...

Persistent link: https://www.econbiz.de/10013170226

The R&D effect on firm value in the information technology industry

Lyroudi, Katerina - In: Business Development and Economic Governance in …, (pp. 225-242). 2022

Persistent link: https://www.econbiz.de/10013415067

Asymmetric and threshold effects on comovements among Germanic cross-listed equities

Koulakiotis, Athanasios; Kartalis, Nikos D.; Lyroudi, … - In: International review of economics & finance : IREF 24 (2012), pp. 327-342

Persistent link: https://www.econbiz.de/10009690150

Impact of futures on comovements between European cross-listed equities

Koulakiotis, Athanasios; Lyroudi, Katerina; Dasilas, … - In: Journal of financial management and analysis : … 18 (2005) 1, pp. 1-13

Persistent link: https://www.econbiz.de/10003167708

Stock market reaction at the WHO's announcement of a pandemic due to COVID-19 of the French pharmaceuticals

Lyroudi, Katerina; Nikolopoulos, Sotirios - In: European research studies 24 (2021) 3B, pp. 482-496

Persistent link: https://www.econbiz.de/10012666764

COVID-19 pandemic and day-of-the-week anomaly in OMX markets

Bolek, Monika; Gniadkowska-Szymańska, Agata; Lyroudi, … - In: Central European economic journal 9 (2022) 56, pp. 158-177

This paper aims to discuss market efficiency due to the changes that appeared in this field after the COVID-19 outburst. The OMX exchange and its indices are taken into consideration because they represent markets not analysed in such a context before (a) Baltic: Estonia, Latvia and Lithuania;...

Persistent link: https://www.econbiz.de/10013352581

The day-of-the-week anomaly in light of the COVID-19 pandemic on an example of selected OMX indices

Bolek, Monika; Gniadkowska‑Szymańska, Agata; … - In: Comparative economic research : Central and Eastern Europe 26 (2023) 2, pp. 129-148

This paper analyzes market efficiency (EMH) with the day-of-the-week effect and the changes that might appear after the outbreak of the COVID-19 pandemic, based on the example of the OMX Exchange and its indices. Before the pandemic, only the OMX Baltic All‑share index was efficient; during...

Persistent link: https://www.econbiz.de/10014339831