Institutional real estate has evolved from a relatively narrow allocation, historically concentrated among large pension plans and a limited group of specialist managers, into a broadly established institutional asset class. The NCREIF Property Index was developed to provide a consistent measure of property-level investment performance. During the following decades, reporting conventions, governance practices and market infrastructure continued to develop. The index, which dates to 1978, helped establish historical measurement of property-level returns and support institutional understanding of commercial real estate as an asset class. Separately, the public REIT market, first created in 1960, expanded significantly in the early 1990s, with Nareit identifying the 1991 Kimco Realty IPO as the beginning of the modern REIT era.