Abstract
The concept of herd behavior is based on the nature of decentralized acting investors’ pseudo-collaborative
behaviors in the market. This study investigates the herd behavior phenomenon for Borsa Istanbul (BIST)
amidst the new coronavirus outbreak. The whole period is split into symmetrical two discrete one-year
sub-periods considering the median date of March 11th, 2020, the official announcement date of the first
domestic COVID-19 case. The paper proceeds with the models based on the Cross-sectional mean absolute
deviation (CSAD) and the Cross-sectional standard deviation (CSSD) test methodology to test for probable
herd behavior, using daily stock closing prices of the BIST 100 index shares during the period from March
11th, 2019 to March 9th, 2021.
Publisher
M.U. Iktisadi ve Idari Bilimler Dergisi
Subject
General Earth and Planetary Sciences,General Environmental Science
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