In studying risk-taking, we pay particular attention to intentional risk (uncertainty created by a goal-directed opponent or even social structure – like a financial market), because the brain does not treat this type of risk like non-intentional, "naturally occurring" risks. In many respects, the human brain is well adapted to recognize and react to such "social" risks, perhaps more than pure financial risks (which may explain why humans are so good at detecting insider traders).
We published an article in The Journal of Finance on how this plays out in financial markets with insiders. Read more in the web page on Information Aggregation.