Is NASDAQ futures trading halal?

As salamu Alaikum brothers. recently i have been studying technical analysis to educate myself for crypto trading but somehow i found out a mentor that trading Nasdaq e mini futures short and long trades made me wonder if is it halal or haram? because he was making so big money within a few hours on a daily basis. i need a competent assist about it to know if it is Halal or Haram? as salamu alaikum wa rahmatullah