There was an error in their factsheet where they combined Residential and Retail into one category. Investors can look at their ETF Facts on their website, ZRE currently has 37% of its assets allocated to retail REITs, 25.3% to residential REITs, and 7.5% to office REITs.
ZRE did not break down how the sector allocation was calculated, but typically, the calculation could be calculated by adding up all the properties units' values within the ETFs, and categorize each asset class in percentage terms.
Authors of this answer, directors, partners and/or officers of 5i Research and/or affiliated companies have a financial or other interest in ZRE.