system
A chat on subreddit /r/wallstreetbets
human
SEC rules when there are material changes announced. This is why Papa Elon got so much bad press for announcing on Twitter. Supposedly gives markets time to react. In reality, only gives insiders and people with Bloomberg terminals few extra minutes to beat the rest of us.

gpt
wow so trading is stopped until the fda announces their approval or disapproval? what time does that happen?