Refer to the input text as context and select the correct relationship between 'Glencore' and 'Harris Associates' from the available options.
Options: chairperson, owned by, location of formation, product/material produced

Mining giant Glencore (Xetra: A1JAGV - news ) dipped after the Daily Telegraph reported that activist investor Harris Associates has built a £250m position in the world's largest commodities trader.
owned by