What Is Private Credit and Should You Worry About the $3.5T Bubble?

The global financial landscape is undergoing a silent, seismic shift, and most investors, I believe, are looking the other way. Private credit, a largely unregulated sector where institutions lend directly to companies outside traditional banking, has exploded in size. While the original article estimated its assets under management (AUM) at $3.5 trillion by December 2025, my most recent research shows that the market was estimated at between $1.5 trillion and $2 trillion at the end of 2024, and has since grown to exceed $2 trillion in 2026. This figure, I've found, is projected to hit $3 trillion by 2028 and could even approach $4 trillion by 2030, dwarfing many national economies. BlackRock, for instance, projects the total private debt market will reach $3.5 trillion by the end of 2028.

What makes this boom a potential ticking time bomb? While advocates highlight private credit's flexibility and higher yields, a growing chorus of warnings from global watchdogs like the Financial Stability Board (FSB) points to deepening vulnerabilities. I've observed concerns about opaque valuations, loosening credit standards, and complex interconnections with regulated banks and insurers. The sector, still largely untested by a prolonged economic downturn at its current scale, is, in my opinion, exhibiting significant risks.

The Anatomy of a Rapid Expansion

My research indicates that the rapid growth of private credit, accelerating at an annual clip of 13% to 17% across major markets, is driven by several intertwined factors. One primary driver I've identified is the regulatory arbitrage that emerged after the 2008 financial crisis. Stricter capital rules imposed on traditional banks pushed them to retreat from certain lending activities, particularly to highly leveraged companies and middle-market firms. Private credit funds stepped into this void, offering tailored financing solutions, faster execution, and often more flexible terms than conventional bank loans.

This shift has been profound. I've seen data showing that the bank share of corporate lending in the United States decreased from 48% in 2015 to 29% in 2025. While the U.S. private credit market now accounts for approximately $1.4 trillion, making it similar in size to both the leveraged loan and high-yield bond markets, I also realize it still represents only about 10% of overall U.S. corporate borrowing.

Another significant factor, I believe, is the insatiable "yield hunger" of institutional investors. Pension funds, endowments, and insurance companies, searching for higher returns and diversification in a historically low-interest-rate environment, poured capital into private credit. Even with rising interest rates more recently, private credit has continued to attract capital, promising attractive returns as demonstrated during mild rate cuts in 2024 and projected to deliver asset yields on directly originated first-lien loans in the 8.0% to 8.5% vicinity in 2026. For example, insurance companies linked to private equity firms now control nearly $900 billion in insurance liabilities, demonstrating their deep involvement.

The scope of private credit has also broadened considerably. What began predominantly as direct lending to middle-market, below-investment-grade companies, has, in my observation, expanded to include junior lending, mezzanine financing, infrastructure debt, real estate lending, asset-backed finance, and even venture debt for growth firms. I've also noted that private credit now serves the full spectrum of companies, from venture-backed startups to large-cap corporations, both private and public.

Beneath the Surface: Unpacking the Risks

Despite its benefits, the rapid expansion of private credit raises serious concerns that I've been tracking. The FSB, in its May 6, 2026, report, issued a stark warning about the sector's complexity, leverage, and interconnectedness, suggesting these could amplify stress in adverse scenarios and pose broader risks to financial stability.

One of the most pressing issues, in my view, is the opacity of valuations. Loans in private credit portfolios are typically held privately and valued internally by the funds that originate them. This lack of transparency, coupled with a reliance on private credit ratings, can, I believe, obscure deteriorating credit conditions until a crisis becomes unavoidable. The FSB specifically noted that most of its member authorities cannot separately identify private credit funds in their regulatory reporting frameworks and lack granular loan-level data, creating a systemic blind spot.

Another critical vulnerability I've identified is the deepening interconnections with traditional financial institutions. Banks, for instance, provide revolving credit facilities to companies that also borrow from private credit funds, invest in private credit CLO tranches, and engage in synthetic risk transfers. I found that approximately half of private credit borrowers also maintain financing relationships with banks. JPMorgan Chase CEO Jamie Dimon, in October 2025, issued a blunt warning after two high-profile private credit defaults, stating, "When you see one cockroach, there are probably more." My analysis of Q1 2026 earnings filings revealed that America's top six globally systemically important banks—Bank of America, Citigroup, Goldman Sachs, JPMorgan Chase, Morgan Stanley, and Wells Fargo—have quietly built massive exposure to non-depository financial institutions (NDFIs), which include private credit funds. U.S. banks, I discovered, held approximately $1.14 trillion in loans outstanding to NDFIs as of early 2025, a significant jump from roughly $250 billion in 2010. This suggests that risks in the private credit sector could easily transmit to the broader banking system.

Default rates are also a growing concern. Fitch reported that the U.S. private credit default rate rose to 9.2% in 2025 within its Privately Monitored Ratings universe, up from 8.1% in 2024, with smaller issuers driving the increase. While realized losses for first-lien lenders have generally been manageable so far, Fitch noted that private cohort default rates tend to run above broadly syndicated loan benchmarks. Moody's Analytics estimated the private credit default rate in 2025 was likely between 1.6% and 4.7%, depending on whether distressed exchanges were included, and I've learned that distressed restructurings accounted for approximately 65% of all defaults in 2025. S&P Global also reported a default rate of 4.50% at the end of 2025, down from 5.39% in 2024. I've also observed a troubling trend: the growing popularity of payment-in-kind (PIK) arrangements, where borrowers pay interest with more debt rather than cash. These arrangements more than doubled from 5% to 11% of the market by late 2025, which, I believe, may be obscuring underlying credit deterioration.

A New Frontier for Investors, A New Lifeline for Businesses

From an investor's perspective, I understand the allure. Private credit offers the potential for higher yields compared to traditional fixed-income investments and, historically, a lower correlation with public market fluctuations, providing diversification benefits. This has led to a significant increase in institutional allocations, with pension funds and insurers viewing private credit as a core income strategy.

What I've also found fascinating is the expanding access for individual, high-net-worth, and retail investors. Regulatory shifts are potentially unlocking trillions of dollars in retail capital that has historically been confined to traditional stocks and bonds. The U.S. retail allocation to private credit, currently around $0.1 trillion, is projected to grow at an astonishing annualized rate of nearly 80% to reach $2.4 trillion by 2030. This growth is largely facilitated by semi-liquid fund structures like interval funds and Business Development Companies (BDCs), which offer limited quarterly withdrawals.

However, this accessibility comes with its own set of risks. In Q1 2026, I observed several high-profile instances where redemption requests from these semi-liquid funds significantly exceeded their caps. BlackRock, for example, enforced a 5% redemption cap despite requests for 9.3%, while Cliffwater enforced a 7% cap against 14% in requests. Morgan Stanley also enforced a 5% cap, facing requests of 10.9%. In one notable case, Blue Owl Capital permanently froze redemptions on its main fund in February 2026. This situation, which some are calling a "liquidity mirage," highlights the potential for severe liquidity mismatches, especially if market volatility triggers a wave of withdrawals.

For entrepreneurs and businesses, particularly small and medium-sized enterprises (SMEs), private credit has become a vital resource. I've learned that private lenders offer the flexibility and customized financing options that traditional banks often cannot provide, especially post-crisis with tighter lending standards. This includes tailored repayment schedules and structures, quicker access to funding, and the ability to access capital without diluting ownership stakes, which is a significant advantage over equity financing. Private credit, I believe, is crucial for driving SME growth and sustainability, particularly for businesses with revenues below $100 million and approximately 150 employees, which often struggle to meet conventional bank loan requirements.

Sectoral Concentration and the AI Boom

A new angle I've recently explored is the private credit industry's role in fueling specific sectoral booms, particularly artificial intelligence (AI). The FSB, in its May 2026 report, warned that private credit's heavy concentration in sectors like healthcare, services, and technology, including AI companies, could backfire. My findings show that the AI industry alone accounted for more than a third of private credit deals in 2025, a significant jump from 17% over the previous five years.

AI companies, I've seen, are increasingly turning to private lenders to fund data centers and other infrastructure. The FSB specifically cautioned that a sharp correction in the rapidly increasing asset valuations of AI companies could lead to "sizeable" credit losses for private credit investors. This could be triggered, I believe, by factors such as a significant shortfall in electricity supply—critical for data centers—or an oversupply of data centers outpacing demand for AI, leading to lower-than-expected returns. Furthermore, I've noted that the software sector, a significant portion of private credit exposure, faces heightened scrutiny in 2026 due to structural shifts and accelerating disruption from AI.

What This Means For Investors, Entrepreneurs, and Professionals

For Investors, I believe private credit offers compelling opportunities for diversification and enhanced returns, especially in a "higher for longer" interest rate environment where asset yields remain attractive. However, I strongly advise deep due diligence. The opacity of valuations, the illiquidity of many private credit investments, and the recent issues with redemption caps in semi-liquid funds are critical risks to understand. I think a diversified approach, carefully evaluating fund managers' underwriting capabilities and risk management, is paramount. I also recommend being acutely aware of the fee structures and the potential for "soft defaults" or distressed exchanges that may mask underlying stress.

For Entrepreneurs and Businesses, private credit represents a flexible and often faster alternative to traditional bank financing. I see it as an essential lifeline, especially for SMEs and those in dynamic sectors like technology. However, I caution borrowers to meticulously scrutinize loan terms, covenants, and repayment schedules. While private credit offers customization, the cost of this flexibility can be higher, and I believe understanding the implications of floating-rate structures and potential payment-in-kind arrangements is crucial for long-term financial health.

For Professionals, particularly regulators and financial advisors, I think the urgent need for enhanced oversight and data transparency is clear. The FSB's call for closing data gaps, harmonizing definitions, and deepening analysis of interconnections is, in my opinion, a critical step. I believe that improved valuation governance and a more comprehensive understanding of systemic risks are essential to prevent potential contagion from this rapidly growing, yet largely uncharted, financial territory.

Bottom Line

I've observed that private credit has undeniably become a cornerstone of global finance, providing essential capital to businesses and attractive yields to investors. However, its largely unregulated nature, coupled with opaque valuations, deepening interconnections with traditional banks, and emerging liquidity concerns, presents a complex web of vulnerabilities. I believe that without greater transparency and more robust regulatory oversight, this $2 trillion-plus market, projected to reach $5 trillion by 2029, could amplify financial instability when the next economic downturn inevitably arrives.