A number of real estate investment trusts besides Redwood Trust are hoping to issue non-agency mortgage-backed securities in the coming years. PennyMac Mortgage Investment Trust and Two Harbors Investment have taken two significantly different strategies to reach that goal. PennyMac has focused on investing in non-performing whole loans and has established a correspondent lending platform, including some jumbo activity. The REIT is also establishing warehouse lending capabilities, with a roll-out planned by mid-2012. In the near-term...