This study investigated the impact of capital structure on cumulative abnormal return (CAR) in the ceramic and tile industry. The purpose of this study was to answer the question of whether capital structure affects CAR or not. This is an applied research study in terms of aim and descriptive-survey in terms of method. The statistical population consisted of ceramic and tile industries listed on the Tehran Stock Exchange (TSE). Accounting information required was extracted from the financial statements of companies listed on the TSE. Eight companies were selected from the selected industries as a sample from 2001 to 2011. This study employed the multivariate regression method to test the research hypothesis. Besides, the panel data model was utilized, whose significance was determined using F and t statistics. Model autocorrelation test was also performed using the Durbin-Watson test. The results indicated that leverage had a significant positive effect on CAR in ceramic and tile industries.
