You have been watching the Telsa stock and are deciding if you should buy some stock before close because you think it will jump up tomorrow, but you want to be more certain about your decision. This project aims to help make that decision. Vader sentiment analysis was implemented on tweets to compute a daily sentiment score. From historical stock data the difference between Tesla opening price and the prior day’s closing price was computed and used as the endogenous variable in an ARIMAX time series model with daily sentiment as an exogenous variable. This final model was able to predict that the Tesla stock will open the next day at a higher price than today’s closing price with 58.8% precision.