Stock price when the opinion was issued
A mortgage REIT. They leverage the slope of the yield curve, to invest in mortgages. Rising rates are not necessarily a good thing for them. It really all revolves around their ability to leverage the spread in the yield curve. There is also some reinvestment risk. If existing pools of mortgages are maturing at higher rates than what you can invest in, that impairs profitability.
It is a mortgage REIT making money by borrowing on the short end of the curve and lending on the long end. The portfolio is much larger than the capital they have to play with, so there is volatility. If rates go up next year it creates refinancing risk for them. He is not comfortable with the leverage in the portfolio.
Like other major mortgage REITs, this is a structure where you lever up mortgage paper using short-term debt which can run to 6-7 times leverage. In periods where short-term rates are rising relative to long-term rates, there is a lot of pressure on this type of a structure. Recently been weak because of refinancing going on in mortgages. Available spread post QE3, has been reduced due to the Federal Reserve getting in to the mortgage market and buying back mortgage bonds, forcing down yields and enabling people to roll over mortgages at cheaper rates.