The so-called RMBS 2.0 features squeaky-clean collateral and high-definition transparency, but industry experts say, more importantly, that after years of mostly talk there is now some momentum in the market. Adam Yarnold, a managing director at Barclays Capital, said there are half a dozen residential mortgage conduits including his firm that are buying loans. During a panel session at the secondary market conference sponsored by the Mortgage Bankers Association, he noted that more broker/dealers are in the wings. Barclays is buying high-quality loans with loan-to-value ratios below 70 percent and debt-to-income ratios that come close to the standards proposed by federal regulators for qualified residential mortgages, Yarnold said. The company hosts a web-based portal through which it locks loans and...