October Brent/Dubai EFS spread narrows; arbitrage viability increases By admin Posted August 9, 2021 In In the News October Brent/Dubai EFS spread narrows; arbitrage viability increases2021-08-092021-08-09/wp-content/uploads/liberty-petroleum-icon-logo2.pngLiberty Petroleum Corp/wp-content/uploads/liberty-petroleum-icon-logo2.png200px200px The front-month Brent/Dubai Exchange of Futures for Swaps, or EFS, spread was narrower midmorning Aug….