The study attempted to determine if there was a relationship between stereotypy performance and sex, age and/or coat colour. It was also assessed whether the occurrence of one stereotypy was associated with the performance of another specific type of stereotypy. The performance of locomotor (boxwalking and weaving) and oral stereotypies were recorded from the sales declaration and information on returns from Thoroughbred horses that passed through five auctions. Overall, the stereotypies occurred at a rate of 5.1%. Stereotypies were more frequently observed in females, geldings and 2 a