USRT is a market-cap-weighted ETF that offers broad exposure to the real estate sector by backing investment trusts. This plain-vanilla fund primarily focuses on health care REITs, residential REITs and retail REITs, while excluding REITs in infrastructure, mortgage and timber. USRT made material changes on November 3, 2016. It changed its ticker (from FTY), name (from iShares Real Estate 50 ETF) and underlying index (from FTSE NAREIT Real Estate 50 Index). The old index held fewer names and included some REIT types that are now out-of-bounds. Additionally, instead of replicating the index, USRT uses representative sampling indexing. The underlying index is reviewed quarterly.