> I don't know if people realize that there are thousands of day trading shops where hundreds of people are in a single room, like an internet cafe, where peopl

> I don't know if people realize that there are thousands of day trading shops where hundreds of people are in a single room, like an internet cafe, where people are day trading at terminals and people bark orders to each other and they all jump on the same stocks. I'm here just puzzled, why exactly would you need hundreds of people? And why would all of them "jump on the same stocks" as opposed to a single person doing that? Do stocks care how many people jump on them, or what?