CLO Structuring and the Equity Tranche

What this topic is

A collateralised loan obligation is a special purpose company that buys a diversified portfolio of senior secured corporate loans and funds them by issuing a stack of rated notes plus a residual equity tranche. The notes are paid in strict order of seniority from the interest and principal the loans generate. The equity tranche receives whatever is left after every note, every fee, and every diversion required by the structure's coverage tests - which is a lot of money in a good year and nothing at all in a bad one.

Why it matters

CLOs are the largest single buyer of broadly syndicated leveraged loans, which makes them a structural feature of how mid-sized and large private companies are financed. Understanding the equity tranche is the fastest route to understanding the whole vehicle, because every structural feature - the coverage tests, the reinvestment period, the manager's fee schedule - exists to referee the conflict between the note holders and the residual. It is also the clearest available worked example of what leverage does to a credit portfolio.

Who should learn it

Credit investors and analysts, structured finance practitioners, private credit and leveraged finance professionals, treasurers of institutions that buy CLO paper, and anyone who wants to understand where leveraged loan demand comes from.

What you will understand

• How to build the capital stack and compute the arbitrage from first principles, including the effect of the base rate
• Why overcollateralisation tests are the mechanism that actually determines equity's cash flow, and what trips them
• Where the equity return really comes from across a deal's life, and how a reset or refinancing changes it
• The regulatory landscape - US risk retention after the LSTA decision, EU retention, and the Volcker exclusion - and why it differs by jurisdiction

Prerequisites

• Fee Structures and Net Returns
• The CDS-cash Basis and What It Prices

Common misconception

CLO equity is usually described as a leveraged bet on loan defaults, which makes it sound like the risk is default losses. Defaults matter, but they are rarely what stops the cash flow. The equity tranche's distributions are switched off by the overcollateralisation tests, and those tests are tripped most often by downgrades rather than by defaults - because loans rated CCC above a bucket limit get carried at market value rather than par in the test calculation. A portfolio in which nothing has defaulted, but in which a wave of downgrades has pushed the CCC bucket through its limit, can go from paying the equity a large distribution to paying it nothing in a single quarter. The trigger is a ratings event, not a credit event.