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

du Pont de Nemours and Co. (DD) $53.15 -1.39% Procter & Gamble Co. (PG) $74.14 -1.32% Nasdaq 100 - Risers Dollar Tree Inc (DLTR) $80.93 +1.97% CH Robinson Worldwide Inc (CHRW) $70.86 +1.59% Vertex Pharmaceuticals Inc. (VRTX) $141.67 +1.37% Biogen Inc (NasdaqGS: BIIB - news ) (BIIB) $315.89 +1.20% Symantec Corp. (SYMC) $21.86 +0.97% Analog Devices Inc (NasdaqGS: ADI - news ) .

Answer: stock_exchange