Fractality of Borsa Istanbul during the COVID-19 Pandemic
Mehmet Ali Balcı,
Larissa M. Batrancea,
Ömer Akgüller,
Lucian Gaban,
Mircea-Iosif Rus,
Horia Tulai
Affiliations
Mehmet Ali Balcı
Department of Mathematics, Muğla Sıtkı Koçman University, Muğla 48000, Turkey
Larissa M. Batrancea
Department of Business, Babeş-Bolyai University, 7 Horea Street, 400174 Cluj-Napoca, Romania
Ömer Akgüller
Department of Mathematics, Muğla Sıtkı Koçman University, Muğla 48000, Turkey
Lucian Gaban
Faculty of Economics, “1 Decembrie 1918” University of Alba Iulia, 15–17 Unirii Street, 510009 Alba Iulia, Romania
Mircea-Iosif Rus
National Institute for Research and Development in Constructions, Urbanism and Sustainable Spatial Development “URBAN INCERC”, 117 Calea Floresti, 400524 Cluj-Napoca, Romania
Horia Tulai
Department of Economics and Business Administration, Babeş-Bolyai University, 58–60 Teodor Mihali Street, 400591 Cluj-Napoca, Romania
Forecasting price changes is very important for the process of estimating and managing market risk in financial markets. Price changes in financial markets may also depend on non-market factors. Considering this situation, the study investigates the effect of the COVID-19 pandemic on Borsa Istanbul. It tackles changes in the fractal dimensions of the time series obtained with the daily closing prices of stocks traded on Borsa Istanbul (BIST). According to the results of the sector-based analysis, we found that fractal dimension changes were quite effective in price estimation.
