Among the top performing stocks on the ASX200 today was WiseTech Global. It gained $2.97 a share (+2.84%) to close the session on $107.62 a share. Stanmore Resources gained 1 cents (+3.44%) to $3.01, and Yancoal Australia rose 19 cents (+3.03%) to $6.46 a share. Among the worst performing stocks was Mineral Resources which lost $1.68 a share (-4.25%) to $37.87 a share. It's been the subject of recent stories in the AFR about an alleged tax scandal involving the company's Chris Ellison. It was accompanied by Polynovo (-8.4%), James Hardie (-4.65%) and Sigma Healthcare (-3.65%).