The loan limit reduction under consideration by the Federal Housing Finance Agency wouldn’t have a major impact on the volume of agency MBS issuance, but industry analysts say prepayment rates on outstanding agency MBS could slow. Mortgages with loan balances greater than $417,000 accounted for 7.9 percent of the $327.76 billion in Fannie Mae and Freddie Mac production in the second quarter of 2013. And mortgages with balances of between $400,000 and $417,000 accounted for a 7.2 percent share, though a significant portion of those originations were in areas with high-cost loan limits and would likely still be eligible for sale to the government-sponsored enterprises. Analysts at Barclays Capital said...