Return Of The Mack: This Biotech ETF Is Back By: Benzinga via Benzinga April 19, 2016 at 07:10 AM EDT Not that it went it anywhere, but the Direxion Daily S&P Biotech Bull 3X Shares (NYSE: LABU) has come roaring back with vengeance ... Read More >> Related Stocks: S&P Biotech Bull 3X Direxion S&P Biotech SPDR