Biotech Stocks Sell Off, ETFs Fall Over 5% By: Benzinga via Benzinga December 23, 2014 at 14:35 PM EST Biotech stocks declined Tuesday as the broader market climbed to new highs. Biotech ETFs that fell more than 5 percent ... Read More >> Related Stocks: Agios Pharmaceuticals Biotechnology Index NYSE ETF Nasdaq Biotechnology Ishares ETF S&P Biotech SPDR