Utilize the input text as a context reference, choose the right relationship between Glencore and London Stock Exchange from the options. Options: product/material produced, manufacturer, distributed by, industry, position held, original broadcaster, owned by, founded by, distribution format, headquarters location, stock exchange, currency, parent organization, chief executive officer, director/manager, owner of, operator, member of, employer, chairperson, platform, subsidiary, legal form, publisher, developer, brand, business division, location of formation, creator.

204.60p +0.44% London Stock Exchange Group (LSE) 2,617.00p +0.42% Sage Group (LSE: SGE.L - news ) (SGE) 524.50p +0.38% FTSE 100 - Fallers Glencore (GLEN) 161.70p -8.18% Weir Group (WEIR) 1,371.00p -3.79% Rolls-Royce Holdings (RR.)

Answer: stock_exchange