In Finance Theory/ Market Microstructure there is the concept known as "Noise Traders" (Finance Theory, see Journal of Finance, is a playground for mathematici

In Finance Theory/ Market Microstructure there is the concept known as "Noise Traders" (Finance Theory, see Journal of Finance, is a playground for mathematicians and physicists btw). Noise Traders create a market niche for themselves by taking risks that other informed traders will not take, as such they crowd out "normal traders". This allows them to command a higher return on investment.