Representing the largest and most actively traded Nasdaq biotechnology stocks, the Nasdaq Biotechnology Index includes companies that are primarily engaged in using biomedical research for the discovery or development of novel treatments and cures for human disease. Index returns do not represent actual performance of the Nasdaq Biotechnology Index Fund and are for illustration only.
Past performance is no guarantee of future results.
The Index Securities are evaluated semi-annually based on market data. We anticipate changes occurring in May and November using March and September price data and April and October TSO data. Changes are effective after the close of trading on the third Friday in May and November. Click on the security's symbol for a Full Quote. Abgenix, Inc. ABGX 2.12 Affymetrix, Inc. AFFX 0.89 Alexion Pharmaceuticals, Inc.