Commodity prices are heading for their worst week this year. Goldman Sachs Group Inc. says, cautiously, that’s an opportunity to buy. While rising macro concerns and escalating trade tensions have weighed on metals and agriculture prices, those risks are starting to be offset by the return of backwardation and a positive carry, analysts including Sabine Schels said in a May 23 note. The S&P GSCI commodity index is generating positive roll returns for the first time in eight months and the bank is forecasting a 3-month return of 6.1%. -  Bloomberg 

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