Twitter lost over $2 billion since inception
Twitter has lost over $2.09 billion since it was founded in 2006 due to "significant operating losses", according to a shareholder document for the year ended 2015. While Twitter's revenue grew from $28.3 million in 2010 to $2.22 billion in 2015, it has not managed to become profitable. Twitter also admitted a decline in the growth rate of user base.