“The $945 million GNR, which gathered $219 million in net new assets over the past year and includes paper and packaging firms (categorized as ‘downstream” versus GUNR’s “upstream” focus), has returned 34.9% over the past year, but has a 10.9% loss over five years. Its expense ratio is 0.4%,” according to the WSJ.

The SPDR S&P North American Natural Resources ETF (NYSEArca: NANR), one of the most successful ETFs to launch in 2015, is another equity-based hard assets play to consider.

NANR tracks the S&P BMI North American Natural Resources Index, which is a subset of the S&P Global Large MidCap Commodity and Natural Resources Index, according to State Street Global Advisors (SSgA), the third-largest U.S. ETF issuer.

“NANR is designed to meet demand for natural resources equity exposure by providing access to companies in the energy, materials and agriculture industries. NANR provides investors with an approach that weights the sub-sectors of the portfolio 45 percent energy, 35 percent materials and 20 percent agriculture stocks,” according to a statement from SSgA.

NANR holds nearly 60 stocks and charges 0.35% per year.

CORRECTION: updated GNR’s performance over five years.