As a way to track these two segments, investors can look to materials options like the Materials Select Sector SPDR (NYSEArca: XLB), iShares U.S. As inflation rears its ugly head, investors could look to energy and materials exchange traded funds that benefit from higher commodity prices. “As people start to travel again, that directly impacts the demand for oil and gas,” Jennifer Foster, co-chief investment officer for equities at Chilton Trust, told the WSJ.