Brent oil future prices have snowballed by more than 10% over the past three months, according to a report from Goldman Sachs.The broker raised its forecast for Brent oil prices in 2H25 by USD5 to USD66 per barrel, while maintaining its prediction of a supply surplus (Brent/ WTI down to average USD56/ USD52 per barrel in 2026).Related NewsBofAS Raises Oil Price Forecast, Lifts PETROCHINA's TP to HKD8In addition, while global inventories increased as Goldman Sachs anticipated and the broker kept unchanged its forecast of a supply surplus averaging 1 million barrels per day in 2025, OECD stocks, which have a more immediate impact on prices than global inventories, were lower than expected mainly due to more inventories in non-OECD countries and on water builds.