Dagmara Michalczuk, Creditflux, October 2026

One of the more perplexing developments in today’s CLO market is the decoupling of triple A spreads from underlying loan spreads. Strong demand for loans against limited new supply has pushed spreads tighter and fuelled repeated waves of repricings.

CLO triple As, however, have not compressed nearly as much, even as the nominal spread on the US loan index has fallen to post-GFC lows. As a result, CLO equity excess interest has been squeezed despite tightening in CLO mezzanine debt spreads.

At first glance, this divergence may seem unusual. However, the supply-demand dynamics and price sensitivities governing each market are fundamentally different. Additionally, CLO issuance itself may explain much of the gap.

Every new CLO simultaneously creates demand for loans and supply of CLO liabilities. On the asset side, CLO managers compete for a finite pool of suitable collateral. When new money loan issuance fails to keep pace with CLO formation, competition can drive spreads tighter.

Borrowers can quickly capitalise on this when it happens, given the relatively short six-month, 101 soft call protection typical of leveraged loans, rapidly passing the benefits of strong demand from lenders to borrowers. Furthermore, once issued, CLOs need to remain invested, creating a diverse, relatively spread-insensitive buyer pool.

Undesirable structural asymmetry

CLO liabilities work differently. Lowering an existing CLO’s funding cost requires the controlling equity holder to refinance or reset the deal. That decision is constrained by longer non-call periods, typically one to two years for new-issue CLOs.

Asset spreads can therefore compress faster than liabilities, creating an undesirable structural asymmetry for CLO equity investors in spread-tightening environments.

This asymmetry becomes beneficial during spread-widening periods as CLO debt spreads remain unchanged, boosting equity excess interest generation.

Two further differences contribute to the decoupling. First, the CLO triple A investor base is relatively narrow, dominated by banks and other large institutional investors.

Secondly, triple A investors do not evaluate CLO triple A spreads relative to underlying loans. They compare them with similarly rated alternatives, including investment-grade corporate debt and other structured products. Liquidity, complexity, regulatory capital treatment and relative value considerations therefore all influence the returns they require. Bank demand can also be gated by balance sheet capacity and internal risk limits, independent of spreads.

Disrupting equity arbitrage

Separately, the growth of captive CLO equity capital may be further disrupting the equity arbitrage feedback loop.

Historically, deteriorating CLO arbitrage would be expected to slow CLO formation and help restore equilibrium between asset and liability spreads. Managers with captive or affiliated equity capital, however, may have incentives beyond equity returns, including growing fee-earning CLO AUM. This may allow tighter arbitrage to persist longer than it otherwise would.

It is important to highlight that new-issue arbitrage has historically been an imperfect predictor of ultimate CLO equity returns. It may therefore be perfectly rational for long-term equity investors to trade near-term income generation for potential future optionality such as loan spread widening or CLO debt refinancing.

Nonetheless, the price of that optionality should be in line with its expected timing, value, and duration. It would be unwise to justify CLO equity investments primarily on the promise of uncertain and distant future optionality.

The divergence between loan and triple A CLO spreads is not necessarily an anomaly. It reflects two markets with different demand-supply dynamics and buyer bases.

For CLO equity investors, tight spreads and abundant liquidity can create valuable refinancing and early call opportunities, but they can also undermine the economics of putting new money to work.

Eventually, insufficient equity returns should return arbitrage to a more attractive equilibrium. Until then, the most valuable option may be the one equity investors control themselves: patience in deploying capital.