Düzakin, HaticeYılmaz, SüreyyaKonak, Tuba2025-03-072025-03-0720221302-67391308-6979https://doi.org/10.31671/doujournal.1061551https://search.trdizin.gov.tr/tr/yayin/detay/1115534https://hdl.handle.net/20.500.12507/2598The new coronavirus (Covid-19) pandemic, which arised in Wuhan, China end of the December 2019, has spread to all countries in a short time and several measures have been taken around the world. The measures have had a profound impact on world trade, financial markets, and the country's economies. Accordingly, this study examines the Borsa Istanbul sector returns, which are the most affected by Covid-19 pandemic. The case study method was used in the study, where the dates when the first Covid-19 case occurred, the new normalization period started, and the first Covid-19 vaccine was administered in Turkey were determined. The study also used the food and beverage, services, construction, industry, trade, tourism, and transportation indices. As a result, the study determined that all sector indices dropped, but tourism and transportation indices dropped faster.enCovid-19Borsa İstanbulCase StudyArticle23COVID-19 Özel Sayısı303319111553410.31671/doujournal.1061551