Just in case, GME & AMC experienced a short squeeze in the beginning of the year and some short-selling hedge funds indeed lost a fortune because of that. But market makers themselves do not get any exposure (they stay delta-neutral in our language). Yet, I would appreciate to know if I'm missing smth
That is a big ask. I’d have to dedicate a lot more time to reviewing and collating the six months of shit I’ve seen posted in r/<whatevers>. Citadel engaged in scammy dark market manipulation, penalties for misbehaviour that are a fraction of the gains achieved, collusion between the various big players, etc. I don’t really care to do that to satisfy your curiosity.
Feel free to hit up r/superstonks, r/wallstreetbets, r/gme or r/GameStop, whichever it is, etc, January thru now. The “apes” have dug up a ton of stuff that indicates that the US market is fundamentally dishonest.