Copper ETF CPER rises 33% in a year amid industrial demand uncertainty and futures curve risks.

The United States Copper Index Fund (CPER) has gained 33% over the past year, reflecting strong copper prices that reached a 12-month high in January. However, the fund's future performance depends heavily on global manufacturing activity, tracked by PMI indicators, which signal industrial demand trends. A sustained PMI below 49 could lead to copper inventory build-ups and price pressure. Additionally, CPER's returns are affected by the copper futures curve; a shift from backwardation to contango can erode gains due to roll yield losses and the fund's 1.06% expense ratio. Investors should monitor manufacturing PMIs and the futures curve closely to gauge CPER's outlook, with mining-equity ETFs as an alternative for copper exposure without futures risks.