Looks like guys on your link were scalpers, not the typical Tim Sykes trained shorts. Amazine video on youtube Twist Cytodyn, shorts talking about their profits on the famous Cytodyn short attack in June when we went from 9.8/share to 3.6 in about 15 minutes, I thought my laptop had a virus. If you listen to the whole video, a guy, famous Tim Grittani, I believe the Sykes trained top performer, says he profited over $200K shorting CYDY that day in June.

https://www.youtube.com/watch?v=ZGMTU3IpPrY&t=197s