Two Harbors Investment Corp. is ready to double its money. The real estate investment trust (REIT) is managed and advised by (and was founded by) PRCM Advisers, a subsidiary of Pine River Capital Management. The trust primarily invests in agency residential mortgage-backed securities (RMBS) with fixed or adjustable interest rates that are backed by government-supported enterprises Fannie Mae, Freddie Mac, or Ginnie Mae. About a quarter of its mortgage portfolio is made up of non-agency RMBS, such as subprime mortgages, which carry more risk than federally-backed securities but offer higher yields. Chairman (and Pine River CEO) Brian Taylor controls almost 20% of the trust's stock.