RWR is among the oldest real estate ETFs on the market. Since 2001, RWR has offered investors a well-managed vehicle to invest in a diverse, market-cap-weighted basket of US REITs. The fund tilts away from the 'specialized REITs' category which includes everything from hospital REITs to railway REITs and instead overweights the quintessential real estate sub-sectors: commercial and residential REITs. The reason for the exclusions is that performance of such securities may be driven by factors other than the value of real estate. As such, RWR could appeal to those looking for a pure play take on US REITs. Constituents must derive 75% of their total revenue from the ownership and operation of real estate assets and must also meet certain market cap requirements. The index is rebalanced quarterly.