ARM Update

September 14, 2020



On the data front, consumer prices advanced for the third-straight month in August, with the headline CPI figure came in at 0.4%. Core CPI (excluding food and energy) rose 1.7% year-over-year, slightly ahead of July’s 1.6% pace.  On the week, yield spreads on Ginnie and conventional ARMs remained stable while fixed-rate products tightened 4 bps in 15-years and 1 bp in 30-years.  On the month, conventional ARMs tightened 2 to 9 bps while MBS spreads experienced relentless tightening between 10 – 17 basis points due largely to the Fed’s sponsorship.

ARM pricing spreads have tightened and remain at levels seen during the latter half of 2019 and early 2020 before the market dislocation in mid-March.  Shorter 5/1 conventional ARMs have a 48 bp spread, almost 18 bps wider than they were in March 2019.  Longer-reset 7/1 and 10/1 conventionals have a 62 and 70 bp spread, respectively, approximately 22 and 33 bps wider.  Adjustable-rate mortgage products remain an attractive place to put excess cash and liquidity without extending duration, regardless of portfolio strategy.

Factors such as diminished liquidity, lack of index sponsorship, and the small market size have slightly increased ARM spread concessions to fixed rates.  Spreads are wider by approximately 30 bps on 7/1s versus their 15-year fixed rate counterparts.  7/1s may offer better value than 15-years, but they are less liquid.  Overall, we continue to see relative value in 7/1s due to appealing yields, shorter durations, and less negative convexity than comparable coupon 15-year fixed rate MBS.  Investors concerned about potentially faster prepayments could focus on lower WAC new issue pools or moderately seasoned paper.



The ARM origination cycle was light last week, with 77.2mm in new issue ARM selling split amongst Fannie Mae (52.6mm), Freddie Mac (24.2mm), and Ginnie Mae (0.4mm).  Supply was focused in 5/1s and longer reset 10/1s with Fannie Mae and Freddie Mac issuing 62.9mm collectively.  No 3/1s were issued as this shorter product continues to be largely abandoned by lenders and the GSEs.  ARM gross issuance remains at multi-year lows, but recently broke the 1-year run of monthly issuance under $1 billion, and increased supply to levels not seen in over two and a half years.  Last year, the monthly net supply of ARMs ran at a negative $2-3 billion pace, while fixed rates grew at $20-30 billion each month.  The decline closely tracks 5/1 hybrid ARM rate spread to the 30-year fixed mortgage rate, which has dropped to approximately 4 basis points.  As of September, hybrid ARM issuance represented ~ 0.33% of overall MBS issuance.



ARM Prepay Commentary

The overall prepayment of conventional hybrid ARMs decreased modestly in August.  September-released factors indicated the overall prepayments of FNMA and FHLMC ARMs fell a slight 0.77% and 1.28%, respectively.  The overall prepayments for FNMA 5/1s and 10/1s decreased by 2.86% and 0.98%, respectively, while 7/1s were unchanged.  Similarly, prepayments for FHLMC 5/1s dropped by 7.14% while 7/1s and 10/1s rose less than 1%.  The overall prepayments of GN II hybrid ARMs fell 9.89% in August.  For Treasury indexed GN II hybrid ARMs, the overall prepayments for GN II 3/1s, 5/1s, and 7/1s declined 5.8%, 13.05%, and 22.15%, respectively.  In aggregate, FNMA and FHLMC ARM speeds decreased to 38.8 and 38.5 CPR and GN II declined to 39.2 CPR.



Shorter-reset LIBOR-based Fannie 3/1s increased 2.8 CPR to 22.5 and 5/1s decreased 1.1 CPR to 37.3.  Longer-reset 7/1s remained unchanged at 43.6 CPR while 10/1s fell .4 CPR to 40.3.  In the Ginnie sector, Treasury-based 3/1s, 5/1s, and 7/1s paid 35.7 CPR, 41.3 CPR, and 23.9 CPR, respectively.



ARM LIBOR Transition Update

The LIBOR to SOFR transition has come to the agency ARM market with more specificity.  Directed by FHFA, Fannie Mae and Freddie Mac announced that they will start to wrap SOFR-based ARMs later this year although no specific date has been set.  The following table from a Vining Sparks publication describes the key features of the new SOFR ARM product:



For SOFR ARMs, both agencies introduced a batch of four basic types with standard 3-year to 10-year fixed-rate terms.  Each will float off of 1-month SOFR averages with a 6-month reset frequency instead of the 1-year reset that most LIBOR hybrids currently have.  Moreover, 1-month SOFR is a backward-looking index rate versus the forward-looking 1-year LIBOR.

A typical 1-year LIBOR loan margin in 225bps.  The margin on these SOFR ARMs needs to be higher to compensate for the shorter tenure of the 1-month index.  However, a higher reset frequency should also help to offset the term difference.  ARRC published a white paper in July 2019 on this topic and recommended that SOFR ARM loan margins be between 2.75% and 3% so that their fully indexed rate may be comparable to the annual reset 1-year LIBOR ARM consumer rate.  The agencies did not dictate a margin in the announcement, but it did impose a maximum margin of 300 bps.

The GSEs have recently stated that LIBOR loan applications would not be accepted past September 30, 2020, and they won’t be securitized after December 1, 2020.  Fannie Mae will start accepting SOFR ARMs on August 3, 2020, while Freddie Mac will permit them from November 16, 2020 and onward.  In their LIBOR Transition Playbook, the GSE’s provided the following timeline, which identifies key transition milestones for SOFR-indexed ARMs:



The vast majority of ARM loans are retained by banks.  The issuance of agency ARMs has been falling since the 2008.  Thus, the impact of this transition timeline may be relatively minor.  Should the current timeline for agency ARM transition stand, investors might expect lower ARM issuance as we move closer to year-end.


Recent SOFR ARM Announcements



Ricky Brillard, CPA

Senior Vice President, Investment Strategies

Vining Sparks IBG, LP

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