These are paper gains. None of these investors have closed their position. Most of them probably can’t so long as GME is part of the index they are pegged to.
It looks like 10% is GME is held in FDMLX, a mutual fund that tries to invest in "undervalued stocks." Since Gamestop isn't undervalued anymore, they're probably in the process of selling right now.
The rest of the list are private individuals or hedge funds so can unload whenever they want. One of them, MUST already has.
Amazon and FB are massive companies, growing massively every year. They are probably overvalued, but that's due to a P/E ration problem, not a fundamentals problem.
Game Stop is straight up a flailing business, not very big to begin with.
This is a market stampede and it will come down soon.
It was 3 months ago. Things have changed since.