The mobile banking technology adoption is a very crucial factor that needs to be done by banks to adapt with the current situation. The Purpose of this research is to measure the impact of Mobile Banking Technology Adoption towards the Financial and Stock Performance before and after technology adoption. The financial performance is measured by CAMEL ratio of banks on before and after Mobile Banking Technology Adoption. There will be a value added because the stock performance will be included in the research. The stock performance is measured in stock return and stock risk of the banks. The research will use class IV banks as samples, because Class IV Banks is already considered as Big Banks with a capital of more than 30 Trillion IDR, and this research will used secondary data. The data of financial performance and stock performance from the seven banks in Indonesia that are collected will be tested using the F-test, T-Test and Regression method to measure the before and after impact of technology adoption on financial performance and stock performance.Based on the result of F-test, T-Test and Regression, there are variables that show a low significant level. However, there are some variables that shows a high significant level on before and after Mobile Banking Technology Adoption such as CAR, LDR which indicates positive impact. Meanwhile the NPL shows a negative impact., while showing no significant impact on bank earnings from the financial performance, stock return and the stock risk. This result shows that the technology adoption on mobile banking shows lower performance for ROE and NPL of the banks. However, the result shows the technology adoption will strengthen banks financial performance in terms of the bank’s capital adequancy and liquidity. This finding becomes important for banks to accelerate technology adoptionto increase their competitiveness against competitors and adapt in a changing market in the current situation.