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27 March 2015
US Fixed Income Weekly
The view in enOrtgeirje credit
Existing home sales skimmed under forecasts on Monday (+1.2% instead of
+1.7%) while new home sales jumped that threshold Tuesday (+7.8% instead
of -3.5%). The FHFA home price index came in Tuesday up YoY by 5.48%.
Housing continued to deliver mixed signals. although generally showing
modest growth and decelerating home price appreciation.
Adding up to fair value in 62/FN
With the first month of MIP-induced prepayments behind us and agency MBS
prices showing some signs of stability post the March FOMC meeting, now Research Analyst
presents a fine time to revisit relative value in agency pass-throughs. Sticking
to our fair value formula (first detailed in our special report from January 27,
2015), we find that at current levels:
Research Analyst
• GN2/FN 4.5% looks quite rich and we recommend shorting, even though it
is negative carry (-1/32 per month)
• GN2/FN 4.0% looks modestly rich, and being short is slight positive carry
(<1/32 per month)
[Figure 6.. Framework for evaluating fair value in Ginnie Mae II/Fannie Mae swaps
Incremental value (discount) of Total
Cpn FNCL Px OAS OAD Pay Delay Liquidity Credit Prepayment G2/FN Fll G2/FN Act Act- F1/ Net Cony
2.50 98.314 17 6.78 0-007 -0.114 0-281 0-161 1-016 0-300 -0-036 0-030
3.00 102-07 4 6 5.4 0-006 -0-062 0-232 0086 0-264 0-234 -0-030 0-015
3.50 104-305 -3 4.14 0-007 -0056 0-165 -0075 0-040 0-034 -0-004 0-014
4.00 106-250 -6 2.69 0-006 -0-014 0-083 -1-015 -0-261 -0-150 0-111 -0-005
4.50 108-185 27 3.37 0-007 -0-022 0-117 -2-034 -1-251 -0-030 1-221 0-012
503 111-010 10 2.95 0-007 -0-080 0091 -1-160 -1.140 -1-160 -0-020 0-001
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Fair value framework
To estimate fair value, we separate and price out the component risks (pay
delay, liquidity, credit and prepayment) and then adjust the FN value to the
corresponding GN2 fair value (Figure 6). We begin by running the FNCL at its
market price in the DB prepay model to obtain an OAS. To calculate pay delay,
we then alter the FNCL in the model to pay P&I five days sooner, matching
G2SF, and price at constant OAS. For the liquidity premium FNCL carries over
G2SF, we assume current GD/FN swap prices. For value of full faith and credit
premium, we tighten the initial FNCL OAS by the interpolated agency
debenture spread over Treasuries and then re-price in the same model (Tight
OAS Price - Mkt Price = Credit value). Finally, to calculate the prepayment
differential, we price FNCL at even OAS but have the prepay model treat the
FNCL as G2SF. Here the model assumes an FHANA split of 70/30% (based on
historical percentage) and assigns corresponding upfront and annual MIPs to
FNCL based on WALA.
We can then sum the individual components to arrive at the fair value
difference between G2 and FN, which we compare to actual GN2/FN swaps.
The biggest discrepancies lie in the 4.0 and 4.5% coupon where GN2 appears
overvalued by 11/32s and 1-22/32s, respectively. We note however that hedge
adjusted carry for the 62/FN 4.5% short is slightly negative, but is marginally
positive for the G2/FN 4.0% short.
Page 36 Deutsche Bank Securities Inc.
CONFIDENTIAL - PURSUANT TO FED. R. CRIM. P. 6(e) DB-SDNY-0087417
CONFIDENTIAL SDNY_GM_00233601
EFTA01385949
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