Seeing Beyond the Complexity: An Introduction to Collateralized Loan Obligations

Seeing Beyond the Complexity: An Introduction to Collateralized Loan Obligations

CLOs have been gaining wider prominence in markets in recent years, and it’s no surprise why. They have historically offered a compelling combination of above-average yield and potential appreciation. But for many investors, the basics of how they work, the benefits they can provide, and the risks they pose are wrapped in complication, which is why they’re also often misconstrued by the financial media and some market participants.

In spite of this, we believe CLOs are attractive investments and well worth the time and effort required to understand them.

What is a CLO?

Put simply, a CLO is a portfolio of predominantly leveraged loans that is securitized and managed as a fund. The assets are typically senior secured loans, which benefit from priority of payment over other claimants in the event of an insolvency. Each CLO is structured as a series of tranches that are interest-paying bonds, along with a small portion of equity.

CLOs originated in the late 1980s, similar to other types of securitizations, as a way for banks to package leveraged loans together to provide investors with an investment vehicle with varied degrees of risk and return to best suit their investment objectives. The first vintage of “modern” CLOs – which focused on generating income via cash flows – was issued starting in the mid- to late-1990s. Commonly known as “CLO 1.0,” this vintage included some high yield bonds, as well as loans, and were the standard CLO structure until the financial crisis struck in 2008.

The next vintage, CLO 2.0, began in 2010 and changed in response to the financial crisis by strengthening credit support and shortening the period in which loan interest and proceeds could be reinvested into additional loans.

The current vintage, CLO 3.0, began in 2014 and aimed to further reduce risk by eliminating high yield bonds and adhering to the Volcker Rule and other new regulations. In 2020, the Volcker Rule was further amended, and high yield bonds are now allowed back into CLOs. Currently, few CLOs allow for investments into high yield, and those that do generally limit the exposure to 5%-10%. To compensate for the exposure to high yield, these CLOs have increased levels of subordination to better protect debt tranches. Vintages 2.0 and 3.0 represent the biggest chunk of the market, with about $800 billion in principal outstanding, while less than 1% of the market remains in CLO 1.0 vintages.1

The vast majority of CLOs are called “arbitrage CLOs” because they aim to capture the excess spread between the portfolio of leveraged bank loans (assets) and the classes of CLO debt (liabilities), with the equity investors receiving any excess cash flows after the debt investors are paid in full. The market for arbitrage CLOs is valued at $959 billion globally, with about 83% issued in the US and 17% in Europe.2

CLOs Get Better With Age

US CLO vintages 2.0 and 3.0 represent the biggest share of the market today

Source: BofA Merrill Lynch Global Research. As of 30 June 2021.

Leveraged loans: more than just collateral

Leveraged loans are more than simply the underlying collateral for CLOs: They’re the fuel that powers CLOs’ attractive income streams and the first of several levels of potential risk mitigation built into the CLO structure.

Standard & Poor’s defines leveraged loans as senior secured bank loans rated BB+ or lower (i.e., below investment grade) or yielding at least 125 basis points above a benchmark interest rate (typically Libor3 or SOFR in the US and Euribor in Europe) and secured by a first or second lien.4 Several characteristics make leveraged loans particularly suitable for securitizations. They:

As of 30 June 2021, the amount of leveraged bank loans outstanding was $1.26 trillion in the US and €252 billion in Europe.5

Who issues, manages, and owns CLOs?

CLOs are issued and managed by asset managers. Of the approximately 175 CLO managers6 with post-crisis deals under management worldwide, PineBridge has found about two-thirds are in the US and the remaining third are in Europe.

Ownership of CLOs varies by tranche. The least risky, senior-most tranches are mainly owned by insurance companies (which favor income-producing investments) as well as banks (which need high-quality capital to meet regulatory requirements). The equity tranche is the riskiest, offers potential upside and a degree of control, and appeals to a wider universe of investors.

Many Types of Investors Own CLOs

Largest CLO owners by tranche type

Source: Morgan Stanley Research, Citi Research, Nomura as of 30 June 2019. *Permanent-capital vehicles are real estate investment trusts, business development companies, and funds.

How CLOs work

CLOs are complicated structures that combine multiple elements with the goal of generating an above-average return via income and capital appreciation. They consist of tranches that hold the underlying loans, which typically account for about 90% of total assets, and a sliver of equity. The tranches are ranked highest to lowest in order of credit quality, asset size, and income stream – and, thus, lowest to highest in order of riskiness.

Although leveraged loans themselves are rated below investment grade, most tranches are rated investment grade, benefiting from diversification, credit enhancements, and subordination of cash flows.

Each CLO has a defined lifecycle in which collateral is purchased, managed, redeemed, and returned to investors. The standard lifecycle includes five stages:

  1. Warehousing (3-6 months): The manager purchases the initial collateral before the closing date.
  2. Ramp-up (1-6 months): Following the closing date, the manager purchases the remaining collateral to complete the original portfolio. After the ramp-up is complete, the manager also performs monthly tests to ensure the portfolio’s ability to cover its interest and principal payments.
  3. Reinvestment (1-5 years): Following the ramp-up period, the manager can reinvest all loan proceeds, either purchasing or selling bank loans to improve the portfolio’s credit quality.
  4. Non-call (first 0.5 to 2 years of reinvestment): Loan-tranche holders earn a per-tranche yield spread specified at closing, after which the majority equity-tranche holder can call or refinance the loan tranches.
  5. Repayment and deleveraging (1-4 years): As underlying loans are paid off, the manager pays down the loan tranches in order of seniority and distributes the remaining proceeds to the equity-tranche holders.

Tranches Allocate Assets, Income, and Risk

Typical CLO tranche structure

Source: Citibank as of 30 September 2021.

All about the cash flows

Cash flows are the lifeblood of a CLO: They determine the distribution of income and principal, which determines the return on investment. The key concept is that distributions are paid sequentially starting with the senior-most tranche until each loan tranche has been paid its full distribution. Equity-tranche holders absorb costs and receive the residual distributions once the costs have been paid.

Coverage tests are a vital mechanism to detect and correct collateral deterioration, which directly affects the allocation of cash flows. All CLOs have covenants that require the manager to test the portfolio’s ability to cover its interest and principal payments monthly. Among the many such tests, the most common are the interest coverage7 and over-collateralization8 tests. Covenants specify baseline values for each test.

If the tests come up short, the manager must take cash flows from the lowest debt and equity-tranche holders and divert them to retire the loan tranches in order of seniority. The diagram below provides a general illustration of the “waterfall” process in which cash flows are paid when the portfolio passes and doesn’t pass its interest coverage tests.

The Cash Flow Waterfall Has Two Streams

Interest payments are based on the results of the coverage test

Source: Morgan Stanley Research, “A Primer on Global Collateralized Loan Obligations (CLOs),” as of 20 September 2021.

Built-in risk protections

Coverage tests are one of several risk protections built into the CLO structure. Others include:

The equity tranche: the highest risk could mean the highest return

The equity tranche occupies a distinct place in the CLO structure. It’s essentially a highly leveraged play on the strength of the underlying collateral. Because the equity tranche’s success depends on the success of the loan tranches – it’s last in line to receive cash flows and first to realize loan losses – its owners take the most risk of any CLO investors. Their goal, then, is to maximize the value of the equity.

As compensation for providing the majority of equity capital, the majority equity-tranche holder is given potential control over the entire CLO in the form of options, as highlighted below: