Institutional investors are signalling a return to the fundamentals of real estate investment by opting for core funds, according to the latest Inrev study. The results of the Inrev Investment Intentions Survey 2010 show that close to 70% of investors now prefer core-style funds compared to 38% in 2009. This shift towards core has been almost completely at the expense of the opportunity fund style, which fell to 3% from 37%.