Non-Agency Residential Mortgage-Backed Securities: Tread Lightly

Wider spreads and inconsistent liquidity belie positive long-run fundamentals.

March 07, 2019

This Non-Agency Residential Mortgage-Backed Securities sector report is excerpted from the First Quarter 2019 Fixed-Income Outlook.

Late-cycle credit market volatility in the fourth quarter and elevated RMBS dealer inventories weighed on non-Agency RMBS spreads and market liquidity. The credit tailwinds of healing borrower credit performance, favorable demographic trends, and limited housing inventory remain in place, but proved no panacea to higher risk premiums demanded by investors in the face of an aging credit cycle. Looking ahead, the rally in Treasury yields has reduced mortgage borrowing costs by 0.5 percent since November and should improve housing affordability and turnover, providing incremental upside to credit performance.

Despite posting negative -2.2 percent total return in the fourth quarter, non-Agency RMBS completed 2018 with a 3.3 percent total return and outpaced broader credit markets. New issuance tapered over the fourth quarter in response to deteriorating market conditions but completed 2018 at a post crisis high of $100 billion. Post-crisis RMBS subsectors are demanding greater investor focus as new issuance volumes increase and the pre-crisis market continues to roll off.

New Non-Agency RMBS Issuance Sets a Post-Crisis High

New issuance reached $100 billion in 2018 and is garnering greater investor focus as the pre-crisis RMBS subsector continues to roll off.

New Non-Agency RMBS Issuance Sets a Post-Crisis High

Source: Guggenheim Investments, Nomura. Data as of 12.31.2018.

While securitizations backed by non- and re-performing loans (NPL/RPL) drove much of the growth since 2013, NPL issuance decreased in 2018. Issuance is expected to decrease further in 2019 as increasing funding costs in the short end of the yield curve as well as strengthening U.S. housing fundamentals diminish distressed supply. Instead, supply of RPLs, prime, and non-prime (also referred to as non-qualified mortgage, or non-QM) RMBS are expected to increase. Recent credit spread widening had an adverse impact on securitization economics. Spreads on RPL AAA as well as on other loss-remote, recently issued tranches have drifted wider by 60 basis points since March 2018—a 133 percent increase—which has meaningfully eroded securitization profitability for sponsors. For securitizations of new loans, particularly in the case of the non-QM market where loans are made in a relatively inelastic market, the higher cost of securitized debt can be transmitted to new loan pricing to preserve profitability. In NPL/RPL markets, in which sponsors aggregate loans over time, widening spreads and inconsistent liquidity create a headwind to issuance.

Spreads on Recent-Issue AAAs Have Underperformed Other Sectors

Spreads on re-performing loan AAAs have widened by 60 basis points—a 133 percent increase—since the tights of March 2018. This change will create headwinds for new issuance.

Spreads on Recent-Issue AAAs Have Underperformed Other Sectors

Source: Guggenheim Investments, Wells Fargo. Data as of 1.12.2019.

Balancing our constructive outlook on non-Agency RMBS fundamentals is our expectation of ongoing market volatility and irregular liquidity, emphasizing shorter maturity and structurally senior tranches for their lower prospective price volatility. We also favor pass-through structures backed by seasoned credit-sensitive collateral that stands to benefit from improving credit fundamentals.

—Karthik Narayanan, CFA, Managing Director; Roy Park, Director; Alex Zhang, Vice President

Important Notices and Disclosures

This article is distributed for informational purposes only and should not be considered as investing advice or a recommendation of any particular security, strategy or investment product. It contains opinions of the authors but not necessarily those of Guggenheim Partners or its subsidiaries. The authors’ opinions are subject to change without notice. Information contained herein has been obtained from sources believed to be reliable, but are not assured as to accuracy. Past performance is no guarantee of future results.

Investing involves risk. In general, the value of fixed-income securities fall when interest rates rise. High-yield securities present more liquidity and credit risk than investment grade bonds and may be subject to greater volatility. Asset-backed securities, including mortgage-backed securities, may have structures that make their reaction to interest rates and other factors difficult to predict, making their prices volatile and they are subject to liquidity risk. Investments in floating rate senior secured syndicated bank loans and other floating rate securities involve special types of risks, including credit risk, interest rate risk, liquidity risk and prepayment risk. Guggenheim Investments represents the following affiliated investment management businesses of Guggenheim Partners, LLC: Guggenheim Partners Investment Management, LLC, Security Investors, LLC, Guggenheim Funds Investment Advisors, LLC, Guggenheim Funds Distributors, LLC, GS GAMMA Advisors, LLC, Guggenheim Partners Europe Limited, and Guggenheim Partners India Management.

©2019, Guggenheim Partners, LLC. No part of this article may be reproduced in any form, or referred to in any other publication, without express written permission of Guggenheim Partners, LLC.


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Should the mood this year at Davos prove once again to be a contra-indicator, this may be the signal that the economy is likely to re-accelerate soon and that the party in risk assets continues.

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Up the Escalator, Down the Elevator

An uptick in corporate defaults in 2019 will mark the beginning of a prolonged period of stress in the corporate bond market.


First Quarter 2019 Fixed-Income Outlook 

First Quarter 2019 Fixed-Income Outlook

Portfolio Manager Adam Bloch and Macroeconomic and Investment Research Group Director Matt Bush share insights from the first quarter 2019 Fixed-Income Outlook.

Core Fixed-Income Conundrum 

Solving the Core Conundrum

Anne Walsh, Chief Investment Officer for Fixed Income, shares insights on the fixed-income market and explains the Guggenheim approach to solving the Core Conundrum.

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