Mortgage real estate investment trusts that invest in MBS are likely to see their profitability reduced in coming quarters, largely as a result of the competition they’re facing from the Federal Reserve for assets to buy. Since the Fed’s Sept. 13 announcement that it would snap up an additional $40 billion of agency MBS a month as part of its latest quantitative easing, yields have dropped and spreads have narrowed, and that’s cutting into the earnings and dividends of mortgage REITs. Paul Miller, a securities analyst at FBR Capital Markets, agrees...