A change to the weightings in the widely tracked S&P GSCI commodity index could lead to a...

|By:, SA News Editor

A change to the weightings in the widely tracked S&P GSCI commodity index could lead to a further widening of the Brent-WTI spread that is already running at very high levels. The disconnection between the two contracts, and their susceptibility to localized supply-and-demand issues, could force traders to start looking around for a new benchmark against which to price oil.