Oh I suspect it totally caught them off guard. and I am pretty sure a number of other hedge funds see this for what it is and did covering on other stocks they had shorted.
Mark Cuban even made some remark about adjusting his portfolio as a result of all this:
Mark Cuban says he ‘hedged the heck’ out of his portfolio
Billionaire entrepreneur Mark Cuban told CNBC on Thursday he was worried about valuations across a range of asset classes and has adjusted his investment portfolio accordingly. THU, JAN 28 20218:29 AM EST
He sure is kissing up to that reddit crew being all helpful and all. yet he was the owner of Share Sleuth who did pretty much the same thing as Citron. Shares shorted along with short articles.