I heard that day traders and scalpers are so effective that they significantly effect the market. Also the mechanics of trading is a little different. Those that are long term holders essentially ride everything out but other go with leverage and can gain or loose alot. In some way if I wanted to gamble significant amounts, like over 10k, I would do it with leveraged trading over normal gambling. Also I've seen youtube videos of gambling strategies used on trading, and it looks good.