A new investor survey from JPMorgan Chase shows that money managers and other major investor classes have little capacity to purchase significant amounts of MBS, leaving a wide open market for real estate investment trusts to pick up the slack. “From a technical perspective, many investors are already overweight the sector, so there is assumedly limited room for significant further purchases from private investors,” the report said. The status of Fannie Mae and Freddie Mac as leading MBS investors has eroded since they were placed in conservatorship in 2008, and their portfolios are likely to remain...