Two firms plan to issue jumbo mortgage-backed securities next week, breaking a seven-week lull in issuance. However, jumbo MBS activity is expected to remain suppressed due to a number of factors, including dominance by the government-sponsored enterprises. “The idea that reform of the GSEs could pave the way for the private market’s return seems to have faded,” according to analysts at Standard & Poor’s. The rating service pointed to moves by ...