Refer to the input text as context and select the correct relationship between 'Vertex Pharmaceuticals' and 'Nasdaq' from the available options.
Options: stock exchange, owned by, employer, parent organization

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 ) .
stock exchange