Analysis of Differences in Stock Price Before and After the Fatwa of MUI in Indonesia on Israeli Affiliated Companies. Under the guidance of Mrs. Ledy Setiawati. This study aims to determine the difference between stock price before and after the existence of MUI Fatwa Number 83 of 2023 on companies affiliated with Israel. To test these differences, this study uses daily stock price data from 4 affiliated companies that are sampled in this study and listed on the Indonesia Stock Exchange. The research sample was selected using purposive sampling. Data analysis was carried out using IBM SPSS 22 software analysis tools and using a Paired Sample T-test to test the hypothesis in this study. The results showed that there was no difference in stock price before and after the MUI Fatwa Number 83 of 2023 regarding the Law of Support for the Palestinian Struggle in 4 companies affiliated with Israel. This shows that the MUI fatwa is not a bad announcement or news so investors continue to invest in the 4 affiliated companies.