NLR holds a narrow portfolio of companies involved in the nuclear energy industry, ranging from industrial conglomerates to uranium miners. Eligible firms must derive at least 50% of their revenue from this segment. The fund heavily overweights utilities and carries little weight in energy, giving it a large-cap tilt. NLR is also highly US- and Japan-centric, leaving little exposure to other heavyweights in the nuclear industry, like Canada and France. In addition, the index selects and weights holdings by market-cap, with individual weights capped at 8%. The index is reviewed quarterly. Prior to May 6, 2024, the '+' in the fund name has been replaced with 'and'.