As previously reported, BTIG analyst Rich Greenfield upgraded Twitter (TWTR) to Buy from Neutral and set a $25 price target on the shares, citing his belief that Twitter's daily active user growth is accelerating, particularly in the U.S., following the presidential election.

As evidence of the growing user engagement, Greenfield points to a "meaningful uptick" in downloads of the Twitter application on iOS devices and a CivicScience survey that shows increased daily usage. While he is not expecting Twitter's Q4 financials, nor commentary on Q1, to reflect immediate financial benefits, Greenfield does think second half 2017 revenues and 2018 results could exceed investor expectations. Additionally, a rebound in user growth and engagement could reignite takeover speculation, the analyst tells investors.