U.S. public pension funds are taking on more real estate, and at times some of the riskiest types of property investments, as they try to close their funding gaps, the Wall Street Journal reported. American public plans with more than 20,000 members had an average 7 percent of their assets in real-estate investments at the end of 2017, according to a Wall Street Journal analysis of Boston College’s Public Plans Data, which contains the most recent numbers available. That is up from 4 percent in 2006, representing more than $120 billion in additional pension money flowing into real estate. Some of this increase is due to the construction of new properties designed to be sold later for a profit. These so-called opportunistic investments by pensions grew nearly sixfold between 2006 and 2016 even as allocations to “core” existing properties remained flat, according to an analysis by CEM Benchmarking.