Utilize the input text as a context reference, choose the right relationship between Volkswagen Group and NASDAQ 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.

Mighty Volkswagen Group ( NASDAQ Other:VLKAY ) reported that its sales in China fell almost 4% in the first six months of 2015.

Answer: stock_exchange