I just noticed that on ToS, the symbol "COMP", which used to refer to the Nasdaq Composite Index, now belongs to a company called Compass.
Apparently, Compass went public earlier in April, and took that symbol. ToS now uses COMP:GIDS to refer to the Nasdaq.
What's even more confusing is that Nasdaq's own site lists COMP as the symbol for both, the Nasdaq as well as Compass.
🙄