NFRA covers the global infrastructure segment by tracking a market-cap-weighted index of infrastructure firms. The fund's index pulls from the STOXX Global Total Market Index which is dominated by developed markets despite its inclusion of emerging economies. The funds index provider targets five infrastructure sub-sectors (communication, energy, government outsourcing/social, transportation, and utilities) and requires that a firm generate at least half of its revenues from these activities. Unlike other infrastructure-focused ETFs that lean heavily on utilities, NFRA spreads its exposure more equally between utilities, industrials and telecommunications. Overall, NFRA gives a broad, low-risk exposure to the segment. The index is reconstituted semi-annually.