NFLX

The data shown in each quarter are the last reported known numbers at the time

HBO no longer breaks out total HBO Max vs. HBO numbers, nor activated vs. non-activated accounts, so the latest numbers reflect total domestic+international HBO subscribers

Amazon Prime shows the total number of Amazon Prime subscribers, including those that do not use video streaming, making the actual Prime Video user count considerably less

ViacomCBS reports their subscriber count summarized for all of their streaming platforms, which include Paramount+ (previously CBS All Access), Showtime OTT, BET+ and others. Also, from 20Q4, the numbers are showing Global subscriber counts, while before that only domestic subscribers are visible

Apple TV+ numbers are likely inflated due to a majority of its subscribers being on free trials