8.Sprott Gold Miners ETF  SGDM  -22.09% 

The second gold miner ETF on the list, Sprott’s SGDM returned 19.9% over a one-year period but dropped over 35% over the six months ending on Sept. 16. Though some of gold’s decline over the past three months represented a return to its levels at the beginning of the year, our research sampled a period where the precious metal hit a new 52-week low, placing additional pressure on miners.