Energy Microsectors U.S. Big Oil Index 3X ETN NRGU – Up 19.5% Microsectors Oil & Gas Exp. MicroSectors U.S. Big Oil Index 3X Leveraged ETN (NRGU): ETF Research Reports The annual inflation rate in the United States accelerated to 7% in December 2021, marking a fresh high since June of 1982, in line with market expectations and compared with 6.8% in November.