The last six months haven't been kind to Netflix, whose stock has lost nearly 25 percent. As the company prepares to release its fourth quarter results, analysts point to one particular albatross weighing on its shares: user growth.

With slowing domestic growth, Netflix has been under pressure to expand its international user base by as much as 25 percent over last year. Investors are also hoping the company will announce more markets amid reports of expansion plans in Asia.