Since the 20th of January 2017, Donald Trump is President of the United States. Twitter is the only social medium he uses to share his opinions and comments. The aim of this research is to examine whether Donald Trump his Twitter usage has an effect on stock prices of S&P 500 companies. Tweets are divided by polarity, whereafter both abnormal and cumulative abnormal returns are calculated. This research does not provide any significant evidence that proves that Donald Trump his Twitter usage has a general effect on the daily stock prices of S&P 500 companies. This research does find significant evidence that prove that Donald Trump his tweets can have an effect on a single S&P 500 company their stock prices.

Additional Metadata
Keywords Donald Trump, Twitter, S&P 500, Abnormal Returns
Thesis Advisor Bliek, R. de
Persistent URL hdl.handle.net/2105/49372
Series Economics
Citation
Geven, S.J.C. (2019, July 23). The effect of Donald Trump his Twitter usage on the S&P 500. Economics. Retrieved from http://hdl.handle.net/2105/49372