UOP will seek to deliver double the daily returns of the S&P Oil & Gas Exploration & Production Select Industry Index while SOP will attempt to deliver double the daily inverse returns of that index. That index is the underlying benchmark for the $1.6 billion SPDR S&P Oil & Gas Exploration & Production ETF (NYSEArca: XOP).

On May 29, Direxion introduced triple-leveraged answers to XOP, the Direxion Daily S&P Oil & Gas Exploration & Production Bull Shares (NYSEArca: GUSH) and the Direxion Daily S&P Oil & Gas Exploration & Production Bear Shares (NYSEArca: DRIP). [Bold Energy ETFs

NASDAQ Biotech Index Top Holdings as of March 31, 2015

Table Courtesy: ProShares