Data by YCharts Finally, it's worth noting that FMC is also experiencing margin pressure due to rising costs for raw materials and chemicals. But on the other hand, some of the highest-profile stocks in sectors benefiting from inflationary pressures -- companies like copper miner Freeport-McMoran (NYSE: FCX), insecticide and herbicide producer FMC (NYSE: FMC), and oil services company Halliburton (NYSE: HAL) -- have also been sold off aggressively. So how should investors think about Freeport-McMoRan, FMC, and Halliburton?