Capital rules proposed by federal regulators last week for banks could have a significant impact on originations and holdings of non-agency mortgages and mortgage-backed securities. The changes are part of Basel III reforms. Non-bank special servicers have already started to increase their portfolios due to sales by banks getting a head start on complying with Basel III rules. Industry analysts warn that originations of “non-vanilla” mortgages will also be curtailed. “Following the qualified mortgage rules and ...