标题：BIST100 Endeksinde Yer Alan Firmaların COVID-19 Öncesi ve COVID-19 Dönemi Finansal Verilerine Göre Sınıflandırılması: Bir Hiyerarşik Kümeleme Analizi Uygulaması
摘要：The COVID-19 pandemic deeply has affected the economy and financial markets of all countries. The aim of this research is to classify firms in the BIST 100 index through selected financial ratios and to compare their pre-COVID-19 and the COVID-19 period situation. In the research, cluster analysis was carried out with 14 different ratios regarding the liquidity ratios, financial structure ratios, operational ratios and profitability ratios from the financial statements of 81 firms between 2019Q1 and 2020Q3. As a result of the cluster analysis, it was determined that 7 clusters were obtained in both the pre-COVID-19 and the COVID-19 period, but the number of firms and firms forming the clusters differed. In the COVID-19 period, it was revealed that the firms with the highest rate of profitability per share, net profit margin and asset profitability were DEVA, ECILC, ASELS, KERVT, TATGD firms operating in the health, pharmaceutical, communication and food sectors. It is expected that the study will benefit investors both by identifying the firms they can invest in and by examining the clusters obtained in investing through portfolio diversification.
