Private Investor
I used to work professionally on more technical trading. Now as a hobby and investment - looking at mostly UK small caps. So now strictly an amateur.
I like to understand the stocks I own well and sometimes do a lot of research. Still instinct is important - it at a minimum tells me which shares to research. My in-built bias is to buy cheap stocks (with known imperfections - or stocks with "hair") than stocks priced close to perfection.