Shares in Twitter have ended the day greater than 12% decrease after the corporate reported that its fourth-quarter losses had practically doubled.
The social networking service reported a lack of $167m (£133m) within the closing three months of 2016, as in opposition to $90m in the identical interval a yr earlier.
There have been 319 million lively customers, four% up on a yr earlier, however income from advertisements fell barely to $638m.
Donald Trump’s use of Twitter did little to spice up customers or add earnings.
Fourth-quarter revenues have been $717m, 1% up on final yr’s $710m.
Revenues and person numbers each fell in need of analysts’ expectations.
It was the corporate’s slowest quarterly income progress because it turned a publicly listed firm in November 2013.
Some analysts had anticipated new US President Donald Trump’s extensively publicised use of Twitter would give the service a monetary increase.
However throughout a convention name, chief working officer Anthony Noto dismissed the concept that the “Trump impact” had been a key think about person progress.
He stated that whereas Mr Trump had proven “the ability of Twitter” and broadened consciousness of the service, it was arduous for “an occasion or a single individual” to make such a distinction.
Evaluation: Rory Cellan-Jones, know-how correspondent
These have been presupposed to be the outcomes that confirmed Twitter resurgent after a yr of disappointment. The truth that it had been the prime social networking battleground in the course of the US election and that each tweet from the brand new president garnered worldwide consideration would have introduced new customers – and advertisers – flocking in.
That was the idea. Actually, the figures confirmed the slowest progress in quarterly income within the firm’s brief historical past and a really modest improve in person numbers. The corporate has placed on a courageous face, specializing in the expansion in each day moderately than month-to-month lively customers.
It additionally says that income progress is lagging person progress – however traders have grown impatient for proof that Twitter has discovered a sustainable enterprise mannequin.
Donald Trump’s tweets – and the reactions they provoke – could have turn into important viewing for journalists and the markets. Whether or not they make Twitter a fantastic vacation spot for advertisers is a unique matter.
Regardless of the elevated losses, Twitter chief govt Jack Dorsey stated 2016 had been “a transformative yr” for the service.
“We reset and targeted on why individuals use Twitter: it is the quickest solution to see what’s occurring and what everybody’s speaking about,” he stated.
“We overcame the hardest problem for any client service at scale by reversing declining viewers traits and re-accelerating utilization.”
He stated each day lively utilization had risen for the third consecutive quarter and the upward development was set to proceed.
“Whereas income progress continues to lag viewers progress, we’re making use of the identical targeted method that drove viewers progress to our income product portfolio, specializing in our strengths and the real-time nature of our service.
“This may take time, however we’re shifting quick to indicate outcomes.”