I don't quite understand, the announcement about the executive was made on Tuesday, but this gain didn't happen until the final hour or two of trading today.
It's probably a mistake to read much into these things when it comes to Gamestop. It's not about the fundamentals, it's about when /r/wallstreetbets notices and is collectively feeling up for it.
wallstreetbets has been feeling up to it irrespective, and the mgmt change was definitely noticed there way earlier than near-close/after-hours, which is when the last ~$150 of the current $180 ticker gained..
I don’t know it was definitely noticed when it happened and honestly I have a hard time believing it could be more hyped up than these last couple of days.