Credit Suisse appears to be close to issuing a jumbo mortgage-backed security with some loans sourced from Five Oaks Investment. Stonegate Mortgage announced an expansion of its offerings of non-agency mortgage products last week. The lender is offering adjustable-rate mortgages with loan-to-value ratios as high as 90 percent and no requirement for mortgage insurance. The loans can have balances as high as the conforming loan limit ... [Includes three briefs]