Is the BAWSAQ stock market in GTA V, a market which is based on the actions of players online, separate for different platforms? Like, is the market on PC separate from the market on XBox One?
According to Wikia:
The site is linked directly to the Rockstar Games Social Club and is totally driven by the community, so stocks can have different values depending of with platform the game is being played.
So yes, they are separated, as the player bases are separated.