Utilize the input text as a context reference, choose the right relationship between Equinix 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.

On June 30, global interconnection giant Equinix Inc (NASDAQ: EQIX ) President EMEA Eric Schwartz presented at the NASDAQ Investor Program in London, which was hosted by Jefferies.

Answer: stock_exchange