Tom Hayes (born 1979/1980) is a former trader for UBS and Citigroup who was sentenced to 14 years in prison (reduced to 11 years on appeal) for dishonestly driving manipulation of the London Interbank Offered Rate (Libor), a bank reported interest rate, to enhance his trading results. Hayes, in the course of his defence, asserted managers were aware of his actions, and even condoned them. Hayes has mild Asperger syndrome, and was repeatedly nicknamed Rain Man and other demeaning terms by his colleagues.