Some investors think the only way to protect against losses in commercial real estate investing is to give up returns by investing in private real estate funds following a core (conservative) strategy. The truth is just the opposite: core funds often lose money for years at a time. Over the 39 1/2 year history of the NCREIF Open-End Diversified Core Equity (ODCE) Index, there have been 139 complete five-year periods, and the average net return on core funds has been negative during 30 of them (22%). And even when positive periods are included, net total returns on core funds have averaged just 7.7% per year. Over the same period, net total returns on listed U.S. equity REIT portfolios have averaged about 12.0% per year, and net returns have been negative during just 7 five-year periods (5%). But portfolios that combined equal allocations to both listed U.S. equity REITs and private core funds would have shown negative net returns during only two five-year periods, both of them including the 2008-2009 liquidity crisis. Combining listed and private core real estate has tended to protect real estate portfolios from losses. Questions? Contact me at bcase@nareit.com.