Source, a UK-based provider of exchange-traded products (ETPs), has announced the launch of the Source Brent Crude Enhanced T-ETC (BOIL). The Treasury-secured ETC offers optimised exposure to Brent crude oil via the S&P GSCI Brent Crude Enhanced Total Return Index. Brent crude is increasingly recognised as a distinct and important oil benchmark, and has recently consistently traded at a premium to WTI. The ETC adheres to a series of dynamic rolling rules which help mitigate the potential effects of contango (negative roll yield).