Analyst reactions range from "This is what winning looks like" and "We can’t think of a realistic bear case in the near-term" to "overpriced" and "we question whether the momentum can continue."

Netflix on Thursday reported that its subscriber growth slowed dramatically during the summer, a sign the huge gains from the video-streaming service’s crackdown on freeloading viewers is tapering off.

Netflix is starting to raise prices in some countries, as growth spurred by its crackdown on password sharing starts to fade. The company told investors on Thursday that it was "working to improve our monetization by refining our plans and pricing" and had already increased prices over the last month.