Weak production growth, steady-to-rising demand, supply deficits and falling inventories pushed prices of palladium up 19% in 2018, after a 51% jump in 2017, Scotiabank economist Rory Johnston concludes in his Dec. 20 Commodity Price Index report. By contrast, cobalt prices were down 24% year-to-date in 2018. That's a sharp reversal from the 127% gain in 2017, which made the metal the best performing commodity of 2017.
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