United States Copper ETF (CPER) is probably on the radar for investors seeking momentum. The fund just hit a 52-week high and moved up 57.66% from its 52-week low price of $25.65 per share.Are more gains in store for this ETF? Let us take a quick look at the fund and the near-term outlook on it to get a better idea of where it might be headed.CPER in FocusThe underlying SummerHaven Copper Index Total Return reflects the performance of the investment returns from a portfolio of copper futures contracts on th ...