A repo maturity table in an agency mREIT annual report deserves more attention than the dividend headline

Do the arithmetic on the spread before worrying about the plumbing. Take the weighted average asset yield, subtract the average cost of funds including the hedge cost, and that gives net interest spread per dollar of asset. Multiply the spread by the borrowed money per dollar of equity, then add the yield earned on the equity dollar itself, and that gives gross return on equity before management fees and operating costs. Say the asset yield is 5.1 and all in funding is 4.4: that is 70 basis points on 6.8 dollars of borrowings, about 4.8 percent, plus the 5.1 on the equity dollar, so about 9.9 percent on equity before costs. That is still under a 12 percent payout, and once the management fee and operating costs come out of it, either the inputs used were stale or part of that dividend is capital coming back. Post the two yields and the math can be redone.

Notional on the hedge book tells you the size of the position and nothing about how well it matches. What you want is the duration gap after hedges, which most of them disclose in the interest rate sensitivity table, along with the estimated change in book value for a 50 and 100 basis point shift. If the gap is near zero they're hedging parallel moves reasonably well. Neither of those helps with spread widening, where the mortgages cheapen against treasuries and the hedge doesn't move with them. That's the risk that has actually eaten book value in this sector.

The margin call question is the one worth sitting with once repo funding gets layered against a book levered near seven times. If the underlying bonds drop and the lender wants more collateral, the cash has to come from somewhere, and a levered mortgage REIT cannot assume it is sitting idle. Worth checking whether the filing discloses a cash buffer held for exactly that scenario, and where in the document it would show up.