Two Harbors Investment and PennyMac Mortgage Investment Trust have seen healthy returns on their previous investments in vintage non-agency mortgage-backed securities but the real estate investment trusts have recently turned to other investments. Two Harbors has concentrated on agency MBS purchases while slowly ramping up jumbo loan purchases with an eye toward issuing its own MBS. PennyMac, meanwhile, shifted away from non-agency MBS purchases to correspondent lending and investing in ...