PARIS, FRANCE - FEBRUARY 07: In this photo illustration the Twitter logo is displayed on the screen of an iPhone in front of a computer screen displaying a Twitter logo on February 07, 2019 in Paris, France. Twitter today posted better than expected Wall Street results over the last three months of 2018, with net profit up 28% and revenue up 4%, but the stock is falling. After losing 5 million monthly users by the end of 2018, the social network Twitter decided to stop giving figures. In its financial results for the fourth quarter of 2018, the company explains that this announcement will take effect in the second quarter of 2019.