Even so, no mathematical indicator will pick up on bad press, production problems, a ceo falling ill. Day trading simply isn’t calculatable. It’s dictated by trends, socio-economics and human emotion.
The risk isn’t what makes something haram it’s the degree of speculation involved in that risk.
Definitely, it’s halal, but we should try to invest in things that are not so speculative. For instance, Venture capital is potentially higher in risk, but nowhere near as speculative as day trading.