Investors continue to be optimistic in their 2016 outlook for the U.S. real estate market, with 91 percent expecting real estate fundamentals to be about the same or better during the year ahead, according to KPMG'S 2016 Real Estate Industry Outlook Survey. However, the survey also found that investors are growing cautious about the longevity of the current expansion cycle and, as a result, are taking steps to "de-risk" their portfolios.