What is the worst that can happen?

The structural protections embedded within European securitised investments can offer valuable buffers against losses. In the event of underlying loan portfolio defaults, the equity component of a securitised structure provides protection to the bonds, with losses only realised by the debt tranches in order of priority (AAA last) once the equity has been fully written off.

This form of credit enhancement, called ‘tranching’, also creates a waterfall structure, where cashflows are allocated to the higher-rated tranches first and work their way down to the lower-rated tranches. To compensate for the extra risk, investors in the junior-ranked tranches receive a better yield than those higher up the capital structure. Tranching also provides investors with the flexibility to tailor portfolios to specific risk-return objectives, as it determines the specific repayment and credit profiles for a particular bond in the structure.

Other forms of credit enhancement to improve the credit quality of securitised debt include the following:

• over-collateralisation, where the face value of the underlying assets in the collateral pool is higher than the bonds it backs, providing protection to all tranches.
• excess spread, often the first line of defence in absorbing potential losses, is where the interest earned on collateral pool exceeds the coupon payable on the securities and expenses.
• cash reserve funds, often funded by the originator designed to cover interest and expense shortfalls and losses in the collateral pool.

The amount and form of credit support differs by tranche rating and instrument type. Residential mortgage-backed securities (or RMBS) tend to use excess spread and subordination, whereas for commercial mortgage-backed securities (or CMBS), over-collateralisation and reserves are common. A securitisation transaction also naturally de-levers over time, as investments can be fully or partially amortising. This means that immediately or after a specific period, repayments from the underlying collateral portfolio are used to repay principal.  The impact of this is less borrower refinancing risk for investors, compared to say a corporate bond, which typically have a large principal payment at maturity.

One way to bring to life the impact of such protections is to consider the credit support available against the worst losses seen in the asset class. For a AAA CLO, for example, the typical credit support is 40% – until cumulative collateral losses exceed 40%, the AAA notes do not take a capital loss. This is two and a half times greater than the worst collateral losses seen in the asset class (Figure 1). In fact, no European AAA, AA and A-rated CLO tranche has ever defaulted[1].

Resilient liquidity during market stress

Another way to assess the ‘riskiness’ of investments is to consider how easy it is to sell out of them when you need to alongside the price that investors have to pay. As an active investor in the securitisation markets for over 15 years, experience tells us that liquidity is far better than many might perceive. During the market volatility induced by the Covid pandemic and the UK Liability-driven investment (LDI) crisis in 2022, liquidity held up relatively well in the European securitised sector. With the issues driven by rising rates, pension schemes often looked first to sell down floating rate assets, such as securitised, to avoid crystallising larger capital losses in fixed rate bonds. While the LDI-related turmoil resulted in a spike in trading volumes in European securitised, this was absorbed by a range of investors. The subsequent dislocation in European securitised prices saw the likes of bank treasuries and even private equity firms step in to pick up what remained fundamentally high-quality assets, but at attractive discounts. Around €13 billion of European securitisations were sold over four weeks from the end of September and volumes absorbed well[2].

This highlights the ability of the securitised market to absorb significant supply (over a very short space of time) and provide liquidity to investors when they need it most. This is reflected in the publicly reported trading volume in the market, typically measured using “Bids Wanted in Competition” (BWIC or auction processes run by end investors to sell bonds), with volumes providing a good indication of secondary market trading activity (and liquidity), as shown in Figure 2. The costs of liquidity – the difference between the bid and offer price of a bond – unsurprisingly tend to spike during periods of extreme trading levels, but these were generally not excessive when we look at the second half of 2022 and quickly normalised. This can be seen in Figure 3 below which focuses on European AAA CLOs.

Three truths around European securitised

So rather than being ‘risky’ and’ ‘illiquid’, even in times of market stress, securitised assets have proved to be resilient in terms of liquidity and returns. This is even more apparent when considering long-term returns against volatility delivered by the European securitised sector. Here we consider the three truths around the European securitised sector:

• Attractive risk and return profiles – Securitised generally has a higher average credit quality than corporate bond indices and a shorter spread duration (see Figure 4). Amortising structures and the short-dated nature of large parts of European securitised naturally lowers spread duration. Similarly, the floating rate nature of the asset class limits the impact of moves in interest rates (which amplifies the volatility of mark-to-market returns in longer duration fixed income). Resultingly, risk-adjusted returns stack up well relative to other areas of fixed income (see Figure 5).

• Improved diversification – The sector’s diversification potential (Figure 6) is reflected in the low correlation of the European securitised sector to other credit fixed income asset classes. One of the most comparable is high quality IG credit, relative to which European securitised assets tend to show lower volatility. When looking over the past decade, relative to IG credit, AAA CLOs delivered superior yields with around half the volatility (Figure 7).

• Managing portfolio duration – With the vast majority of the European securitised market being floating rate, investors can access credit excess returns whilst separately managing their interest rates hedging strategy, or hold duration elsewhere in their fixed income allocation when they deem it attractive to do so.

In summary, the perception of European securitised investments as inherently ‘risky’ and ‘illiquid’ is a myth not supported by historical evidence. Structural safeguards in securitisations significantly mitigate risk and enhance credit quality, debunking concerns about their safety. Furthermore, the resilience of these assets during market upheavals demonstrates their liquidity and capacity to normalise and offer compelling risk-adjusted returns over the long term. This robust performance, coupled with benefits like higher credit quality, lower interest rate risk, and portfolio diversification, shows the unfounded nature of the myths surrounding securitised assets and highlights their value as a strategic component of diversified fixed income portfolios.

Footnotes

[1] Source: Moody’s Investors Services, Janus Henderson Investors. Please note defaults and losses are for overall market, CLO transactions due to restrictive eligibility criteria typically experience lower default rates, 2023.
[2] Source: Janus Henderson Investors estimates and BWIC volumes between 30 September 2022 and 21 October 2022.