What Happened to Collateralized Loan Obligations (CLOs)?
Collateralized Loan Obligations (CLOs) are a form of securitization that pools together various business loans and sells them as tranches to investors. After demonstrating resilience during the 2008 Global Financial Crisis, the CLO market has continued to evolve, experiencing record issuance in 2024 and 2025, and navigating a complex landscape of interest rate shifts, increased regulatory scrutiny, and the growing prominence of private credit and CLO exchange-traded funds (ETFs) through 2026.
Quick Answer
Collateralized Loan Obligations (CLOs) have maintained their resilience and growth through 2026, despite market volatility and evolving economic conditions. The market saw record issuance in 2025, with both US and European markets performing strongly. Key trends in 2026 include a continued shift towards private credit CLOs, the increasing influence of CLO ETFs, and a focus on active portfolio management amidst tightening spreads and regulatory complexities. Default rates are projected to decline in 2026, and refinancing activity remains elevated, indicating a robust, albeit more nuanced, market.
📊Key Facts
📅Complete Timeline15 events
Emergence of CLOs
Collateralized Loan Obligations (CLOs) were first developed as a securitization vehicle to pool business loans and distribute them to investors in tranches, building on the structure proven with home mortgages.
Global Financial Crisis (GFC) Resilience
Unlike other securitized products like CDOs, CLOs demonstrated strong resilience during the GFC, with senior tranches experiencing minimal defaults, enhancing their reputation.
Increased Regulatory Scrutiny and Evolution (CLO 2.0/3.0)
Following the GFC, increased regulatory scrutiny led to the evolution of CLO structures, with CLO 2.0 and 3.0 vintages featuring higher credit support and reduced reinvestment periods.
Growth of CLO ETFs Begins
Exchange-Traded Funds (ETFs) designed to invest in CLO securities began to gain traction, growing from $120 million in assets under management.
Record CLO Issuance Year
2024 marked a record year for CLO issuance, setting a strong precedent for the subsequent year in both US and European markets.
Federal Reserve Rate Reduction
The US Federal Open Market Committee (FOMC) implemented a 25 basis point interest rate reduction, bringing the benchmark to 3.5%-3.75%, influencing CLO market dynamics.
SEC 'No Objection' Letter on CLO Accounting
The SEC issued a 'No Objection' letter regarding the accounting treatment of CLO loan tranches as 'receivables' for regulatory capital, provided certain criteria are met, impacting investor considerations.
Record-Breaking Year for CLO Activity
2025 was a record-breaking year for CLO deal activity, with US new issue volume at US$209 billion and European new issue volume at €60 billion. CLO ETFs also saw over $15 billion in inflows.
Wilmington Trust Identifies Six Key CLO Themes for 2026
Wilmington Trust highlighted six themes shaping the CLO landscape in 2026, including the rise of private credit CLOs, electronification, data/AI in portfolio construction, and a more global, regulated, and investor-diverse ecosystem.
CRE CLO Issuance Surges in Early 2026
Commercial Real Estate (CRE) CLO issuance surged to $11.2 billion by early March 2026, a 34% increase year-over-year, potentially reaching 2021 peak levels.
LSEG Notes Shift in CLO Investor Focus
LSEG reported that CLO investors in 2026 are increasingly focusing on fundamental factors, CLO manager behavior, and data analytics rather than solely on macro factors.
CLO Market Resilient Amidst Headwinds
A report indicated that CLOs remained active with tightening spreads in Spring 2026 despite rising credit concerns, isolated defaults, and increasing regulatory complexity.
US CLO Issuance Slows Due to Geopolitical Conflict
Fitch Ratings reported a slowdown in US CLO issuance and wider spreads in April 2026, attributed to the onset of the US-Iran conflict in February.
European CLO Defaults Remain Within Expectations
Fitch Ratings confirmed that European CLO portfolio defaults in 2026 remained within expectations, with 11 newly-defaulted issuers by May, comparable to full-year 2025 levels.
Crescent Capital Group Closes Second CLO Equity Fund
Crescent Capital Group announced the final close of its second captive CLO equity fund, Crescent CLO Equity Funding II, with $232 million in commitments, doubling its predecessor's size.
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🔍Deep Dive Analysis
Collateralized Loan Obligations (CLOs) emerged in the 1980s and 1990s as a structured finance product designed to pool diverse business loans and repackage them into tranches with varying risk and return profiles for investors. Unlike Collateralized Debt Obligations (CDOs) linked to subprime mortgages, CLOs demonstrated remarkable resilience during the 2008 Global Financial Crisis, with senior tranches experiencing virtually no losses. This performance cemented their reputation as a robust asset class and led to increased regulatory scrutiny and structural evolution post-GFC, giving rise to CLO 2.0 and later CLO 3.0 vintages with enhanced credit support and stricter portfolio composition rules.
The market experienced significant growth in the 2010s and continued its upward trajectory into the mid-2020s. 2024 and 2025 were record-breaking years for CLO issuance across both the US and European markets. The US market saw new issue deal volume reach US$209 billion in 2025, a 3% increase year-over-year, while Europe recorded €60 billion (US$68 billion) in new issue volume, up from €49 billion in 2024. Refinancing and reset volumes also remained strong, exceeding 2024 levels.
Entering 2026, the CLO market continues to navigate a complex environment. A significant trend is the increasing prominence of private credit and middle-market (MM) CLOs, which, while smaller than broadly syndicated loan (BSL) CLOs, are growing rapidly and offer higher yields to compensate for lower liquidity. The first half of 2026 saw US CLO issuance (BSL and MM combined) approach US$230 billion, with European issuance steady at around €59.1 billion. Regulatory landscapes are also diverging, with the US, EU, and UK introducing different compliance challenges, though regulatory tailwinds, such as simplified EU Securitisation Frameworks and recalibrated Solvency II capital charges for senior CLO tranches, are expected to reinforce demand.
Investor behavior is evolving, with a greater focus on fundamental factors, CLO manager behavior, and data analytics to manage risk and generate alpha, moving beyond reliance on broad macroeconomic factors. The rise of CLO Exchange-Traded Funds (ETFs) has democratized access to CLO securities, attracting significant inflows, totaling over $15 billion in 2025, and contributing to a market that has grown to over $30 billion in assets under management. These ETFs provide daily liquidity and exposure to high-quality, investment-grade CLO paper.
As of August 2026, the market is characterized by resilient performance despite some headwinds. US CLO issuance slowed in April 2026 following geopolitical tensions, leading to wider spreads, but credit quality of Fitch-rated US BSL CLOs continues to improve due to active portfolio management. European CLO portfolio defaults in 2026 remain within expectations, with the cumulative number of newly-defaulted issuers rated 'CC' or below reaching 11 by May, comparable to full-year 2025 levels. Moody's projects speculative-grade defaults to decline to 3.0% in the US and 2.4% in Europe by October 2026, supported by lower funding costs and active refinancing. The overall outlook for the remainder of 2026 suggests continued vibrancy, with M&A and leveraged buyout (LBO) activity expected to accelerate, potentially boosting new CLO formation.
What If...?
Explore alternate histories. What if Collateralized Loan Obligations (CLOs) made different choices?