Concerns over complexity and structural leverage late in the credit cycle have led many investors to overlook collateralized loan obligations (CLOs). However, late-cycle CLOs have historically benefitted from tight borrowing spreads and an opportunity to invest in higher-yielding assets. CLOs have demonstrated their resiliency as an investment class over several credit cycles, with low realized principal losses for CLO debt and robust returns for CLO equity. For long-term investors, CLOs can offer an attractive, front-end-loaded return profile that may complement longer-lockup alternative investments with back-end return profiles.

But investors need to understand the key structural features of these complex instruments, which provide limited liquidity, contain high levels of embedded leverage and lead to a wide range of return outcomes. As the volatility experienced by CLOs in the financial crisis showed, long-term investors should conduct a comprehensive assessment of credit risk, structural risk, manager capability and market risk, and have the ability to integrate these elements into a unified framework.

This paper discusses the basics of CLO equity, provides an approach for valuation, and highlights factors that can position CLO equity as a unique investment opportunity late in the credit cycle.

The basics

On the most basic level, CLOs are arbitrage vehicles. In a CLO, a special purpose vehicle issues long-term debt and equity tranches, the proceeds of which finance the purchase of a portfolio of floating-rate corporate bank loans. Equity tranche investors are positioned to benefit from term, non-recourse leverage without mark-to-market triggers. In other words, the CLO does not face liquidation or margin calls if the market value of the bank loan portfolio falls.

CLO equity returns are driven by the arbitrage between the cost of the debt tranches and the interest income generated by the portfolio of floating-rate bank loans. In Figure 1, the weighted-average cost of the debt tranches is roughly Libor + 173 basis points (bps). If the bank loan portfolio generates an average coupon of Libor + 350 bps, the arbitrage opportunity available for CLO equity investors is about 177 bps, before deducting ongoing deal expenses. This arbitrage is magnified by the embedded leverage in the CLO for the equity tranche.

Figure 1 is a diagram illustrating the CLO (collateralized loan obligation) structure and estimated return potential as of 30 June 2017. The tranches of the CLO are stacked as a tower, with the AAA tranche at the top, moving down to lesser-rated tranches, with the equity component at the bottom. Information on the cost of the debt tranches and percent of cap structure is detailed within the tower. An arrow parallels the left-hand side of the tower and points upward, and is labeled “Portfolio losses.” An arrow parallels the right-hand side of the tower and points downward, and is labeled “Portfolio cashflows.

Valuation approaches

The primary challenge faced by prospective CLO equity investors is determining a valuation framework. One approach is to think of the CLO equity return as a combination of two separate return streams: an interest only (IO) set of cash flows and a principal only (PO) set of cash flows. While the total CLO equity return is simply a combination of these two sets of cash flows, distinguishing the two streams allows us to differentiate the sources of return for the equity tranche and the risks associated with those returns. Figure 2 shows an example of cash flows to a CLO equity tranche as a function of time from initial investment.

Figure 2 is a bar graph showing a hypothetical example of the percentage of cash flows from interest and principal to a CLO equity tranche for the years zero through nine after issuance. Interest payments are around 16% in years one through five, then decline to 11.5% in year six, 6.2% in year seven, 2.6% in year eight and 0.6% in year nine. In year nine, principal contributes 60.9%. For year zero, a bar projecting downward from zero shows principal at negative 100%.

The IO: a call option on bank loan spreads

The arbitrage between CLO debt and the underlying portfolio assets represents the IO component of the equity return. The starting point for evaluating a CLO equity investment is understanding what drives this arbitrage and assessing its yield potential and risks. For example, has the manager elected to add spread and risk through a larger exposure to CCC-rated bank loans, loans with weak covenant packages or higher exposure to more volatile industry segments? Does the portfolio have high exposure to higher-risk middle market issuers? Is the portfolio “barbelled,” with very high- and low-spread names, or is it uniform? All of these factors can affect the size and stability of both the IO and the PO cash flows, driving relative value up and down the capital structure and across deals. 

Adding to the complexity, CLOs are dynamic, managed structures, with a reinvestment period generally spanning three to five years and with some limited reinvestment rights even after the end of the reinvestment period. Over the life cycle of a CLO, some portion of the loans will repay and some portion will default. Since both repayments of performing loans and recoveries from defaulted loans can be reinvested in new loans, equity investors are effectively long a call option on loan spreads.

The value of this option is driven by a number of factors, such as loan repayment rates, default rates, recovery rates and reinvestment spreads and prices. The repayment rate is important to equity investors because it affects the arbitrage in a CLO, as well as the underlying credit risk composition. Therefore, it is important to have an informed view of the turnover risk of the portfolio.

Repayment within a CLO deal occurs primarily due to underlying loan prepayment and the manager’s discretionary trading. Not surprisingly, companies tend to repay and refinance when bank loan spreads tighten, an option given the lack of call protection covenants in bank loans. The loan repayment rate can vary significantly depending on spread level, with the trailing 12-month repayment rate ranging from about 10% to 60% during the period from 30 September 2001 to 31 March 2017, according to S&P Leveraged Commentary & Data (see Figure 3). Even in spread environments that are sub optimal for refinancing, there will be some level of repayment because of changes of control, liability management or other factors, even default.

Figure 2 is a scatterplot of loan spread versus repayment rates from 30 September 2001 to 31 March 2017. Spread-to-call is shown on the Y-axis, and LTM (last 12 months) repayment rate on the X-axis. Most of the plots show spreads between about 150 to 850 basis points, and repayment rates between 10% and 60%. The average of the plots is shown as a downward sloping, curved line from left to right, with the slope lessening as the repayment rate percentage increases.

The reinvestment profile of the CLO portfolio is another critical determinant of the value of the IO. All else equal, widening bank loan spreads benefit equity holders. This is because wider spreads allow managers to redeploy repayment proceeds into higher-yielding assets, which would enhance the excess spread cash flow to the equity tranche because the cost of debt funding is fixed.

This is why some of the best CLO equity tranches were issued right before the financial crisis. The reinvestment option can act as a downside hedge for equity investors in a market-widening environment, as it allows managers to buy cheaper assets and improve excess spread. In volatile markets, CLO equity tranches often suffer secondary market price declines due to falling CLO portfolio values and expectations of higher default rates. However, the longer-term impact of higher equity cash flows due to reinvestment activity can more than offset initial price deterioration – especially if CLO managers are skilled enough to take advantage of volatile market conditions.

While spread widening can benefit the CLO equity arbitrage and therefore the value of the IO, the negative convexity resulting from limited call protection and repricing optionality common in the loan market can pose challenges in a benign or “grind-tighter” credit environment. In this case, expectations for long-lived IO cash flows can vanish when the CLO is called or when underlying loans reprice rapidly and are reinvested at significantly tighter spreads. However, these risks tend to be offset by the right of the majority of CLO equity class investors to refinance the CLO’s debt tranches. In combination with the implicit call on spreads baked in to the CLO structure, this refinancing option provides the CLO equity investor with asymmetric upside to bank loan spreads.

The PO: a call option on bank loan market values

In addition to the IO stream, the CLO equity holder has a claim on the market value of the bank loan portfolio, minus the par value of the CLO debt – the PO value. This residual, which is realizable when the CLO is called by equity investors or when it matures, is generally expressed as the equity net asset value (NAV). Expected default and recovery rates are both key drivers of equity NAV, as is trading activity by the CLO manager. To the extent the manager is able to invest in discounted bank loans that increase in value or mature at par, this gain will increase the equity NAV. However, there is also the possibility that the manager might add risk to the portfolio by buying assets that are trading at a discount due to credit issues. If the present value of the IO stream is insufficient to offset the riskiness of the PO, the equity investor may determine that it is smarter to exercise the call option sooner rather than later.

As CLOs exit the reinvestment period, the PO value becomes an increasingly important valuation, since a bigger proportion of future value depends on principal repayment of the underlying portfolio. At this stage in the CLO’s life cycle, analyzing the underlying portfolio by identifying default candidates becomes crucial to properly valuing the PO component.

Investing later in the credit cycle can be advantageous

Timing is critical for CLO investors, but not always in the way one might think. Logic would suggest that it is inopportune to invest in levered credit products late in the credit cycle. But the historical record of realized CLO performance suggests otherwise. Since the CLO structure benefits from two features – term liabilities and the reinvestment option – deals issued at the end of a credit cycle often benefit from tight borrowing spreads, which drive an increasingly attractive arbitrage as the credit cycle turns and the opportunity to invest in higher-spread assets presents itself. Figure 4 demonstrates this advantage: On a hold-to-maturity basis, deals issued in the two- to three-year period before the financial crisis realized the highest returns on average.

Figure 4 is a bar graph showing U.S. CLO equity internal rates of return (IRR) and number of deals, for each year from 2003 to 2012. The year 2007 shows the highest IRR of about 17%, when more than 110 deals were done. The years 2006, 2005 and 2011 all show relatively high numbers, ranging from 14% to 16% IRR, and 100 to 110 deals. In 2009, no deals were done, and the IRR is zero. In 2012, the latest year shown, IRR was about 5%, with around 40 deals.

A word of caution

Although buy-and-hold CLO equity investors who invested prior to the crisis generally did well, today’s investors should bear two important considerations in mind:

  • During 2008–2009, valuations on CLO equity investments – of all vintages – were extremely volatile, in many cases dipping into the single digits. Investors forced to sell at the bottom of the market took heavy losses.
  • While CLOs are designed to withstand swings in bank loan prices (and may even benefit from volatility), CLO equity returns are sensitive to default rates. A rise in defaults can curtail distributions to CLO equity holders, as the deal is forced to divert these cash flows into new assets or to pay down debt. This occurred in 2009, when many CLOs skipped equity distributions for several quarters due to ratings downgrades and increased defaults. This risk underscores the importance of carefully assessing a manager's credit-picking skills; a deep, robust credit research platform is a must for CLO managers.

The CLO opportunity

Although CLOs are complex instruments, CLO equity can be boiled down into two key return drivers: a call on credit spreads and a call on the assets of the transaction. Each of these options needs to be valued within a unified risk framework that considers bottom-up credit factors as well as the top-down macroeconomic environment. While the mark-to-market risk of CLO equity is acute, hold-to-maturity investors can benefit from a robust and stable return profile. Unlike most alternative investments, CLO equity cash flows tend to be front-loaded, typically providing investors with current cash and reducing cost basis early in an investment life cycle.

For this reason, an opportunistic CLO strategy can serve as a complement alongside other longer-lockup investments. Many long lock-up investments, such as private equity or venture capital funds, generate back-end return profiles, so an allocation to CLO equity can smooth return profiles within broader alternatives buckets by providing front-end-loaded returns. A CLO-driven approach can also serve as an offset for higher-credit-beta investments, since it can potentially capitalize on a widening spread environment.

For longer-time-horizon investors willing to dig deeper into structural complexity, CLOs can potentially offer attractive return potential, even late in the credit cycle.</

The Author

Giang Bui

Portfolio Manager, Securitized Debt

Harin de Silva

Portfolio Manager, Special Situations

Kristofer Kraus

Portfolio Manager



Past performance is not a guarantee or a reliable indicator of future results. All investments contain risk and may lose value. Collateralized Loan Obligations (CLOs) may involve a high degree of risk and are intended for sale to qualified investors only. Investors may lose some or all of the investment and there may be periods where no cash flow distributions are received. CLOs are exposed to risks such as credit, default, liquidity, management, volatility, interest rate and credit risk. Investing in the bond market is subject to risks, including market, interest rate, issuer, credit, inflation risk, and liquidity risk. The value of most bonds and bond strategies are impacted by changes in interest rates. Bank loans are often less liquid than other types of debt instruments and general market and financial conditions may affect the prepayment of bank loans, as such the prepayments cannot be predicted with accuracy. There is no assurance that the liquidation of any collateral from a secured bank loan would satisfy the borrower’s obligation, or that such collateral could be liquidated. Corporate debt securities are subject to the risk of the issuer’s inability to meet principal and interest payments on the obligation and may also be subject to price volatility due to factors such as interest rate sensitivity, market perception of the creditworthiness of the issuer and general market liquidity. Equities may decline in value due to both real and perceived general market, economic and industry conditions. High yield, lower-rated securities involve greater risk than higher-rated securities; portfolios that invest in them may be subject to greater levels of credit and liquidity risk than portfolios that do not. Derivatives may involve certain costs and risks, such as liquidity, interest rate, market, credit, management and the risk that a position could not be closed when most advantageous. Investing in derivatives could lose more than the amount invested. 

Hypothetical and simulated examples have many inherent limitations and are generally prepared with the benefit of hindsight. There are frequently sharp differences between simulated results and the actual results. There are numerous factors related to the markets in general or the implementation of any specific investment strategy, which cannot be fully accounted for in the preparation of simulated results and all of which can adversely affect actual results. No guarantee is being made that the stated results will be achieved.

Statements concerning financial market trends are based on current market conditions, which will fluctuate. Forecasts, estimates and certain information contained herein are based upon proprietary research and should not be considered as investment advice or a recommendation of any particular security, strategy or investment product. There is no guarantee that these investment strategies will work under all market conditions or are suitable for all investors and each investor should evaluate their ability to invest long-term, especially during periods of downturn in the market. No representation is being made that any account, product, or strategy will or is likely to achieve profits, losses, or results similar to those shown.

This material contains the opinions of the manager and such opinions are subject to change without notice. This material has been distributed for informational purposes only and should not be considered as investment advice or a recommendation of any particular security, strategy or investment product. Information contained herein has been obtained from sources believed to be reliable, but not guaranteed. No part of this material may be reproduced in any form, or referred to in any other publication, without express written permission. PIMCO is a trademark of Allianz Asset Management of America L.P. in the United States and throughout the world. ©2017, PIMCO.