Many of them probably do, but I strongly doubt they're doing a ton of trading after hours. For one thing, the people all excited about gamestop have been talkin

Many of them probably do, but I strongly doubt they're doing a ton of trading after hours. For one thing, the people all excited about gamestop have been talking about it at $40-50 / share, so why would they suddenly all jump in at $150? For another, I read (but don't know how to verify) that after-hours volume was much higher. Doesn't seem likely that retail was much of a factor.