The third season is a big hit for Netflix, with over 40 million viewers in just four days. Netflix announced on Monday that the show's third round since its release on July 4 has been monitored by 40.7 million household accounts. It makes a new record for Netflix for any movie or series in its first four days; The announcement also notes that 18.2 million accounts have already finished the season.
. @Stranger_Things 3 breaks Netflix records!
40.7 million household accounts have been on the show since the 4th of July global launch ̵1; more than any other movie or series in the first four days. And 18.2 million have already completed the entire season.
– Netflix USA (@netflix) July 8, 2019
An important note to note here: Netflix does not release viewership data for all its shows and their numbers are completely internal and cannot be verified by an independent unit. According to TV Line, a source at Netflix confirmed watching the show registers if anyone saw at least 70% of an episode.
The view has already been confirmed four a fourth season, which may be the last.