The looser underwriting standards Redwood Trust rolled out earlier this year for jumbo mortgages are aimed at aggregating loans that banks won’t necessarily acquire, according to officials at the real estate investment trust. Redwood introduced its “Choice” program in April, allowing for credit scores as low as 661, debt-to-income ratios as high as 49.99 percent and combined loan-to-value ratios up to 90.0 percent. The characteristics aren’t all allowed on the same loan. For a ...