Karki D. Many factors affect stock market price behaviors; they bring out over-or under-reaction in the market. This study intends to find the impact of major catastrophic event on stock returns. For this purpose, it uses daily data of stock prices with total 210 . ajcr [Internet]. 2020 Aug. 30 [cited 2026 Apr. 17];7(8):1-10. Available from: https://cirdjournals.com/index.php/ajcr/article/view/337