Meet the poster child for momentum stock selloff By: CNBC.com News April 10, 2014 at 12:58 PM EDT The iShares Nasdaq Biotechnology ETF has been the tip of the arrow when it comes to trading momentum. Read More >> Related Stocks: Alexion Pharmaceuticals Capital Strength ETF FT Facebook GX Social Media ETF Gilead Sciences Nasdaq Biotechnology Ishares ETF Netflix Perrigo Select Dividend Ishares ETF Sentinelone Inc Cl A Valeant Pharmaceuticals International, Inc.