Buffett, Dimon Warn Private Credit Risks Threaten Banks

Warren Buffett sounded an alarm over the rapidly expanding private credit market in a CNBC interview aired over the weekend, warning that stress in the sector could ripple through the broader banking system. His remarks were followed on Monday by JPMorgan Chase CEO Jamie Dimon's annual shareholder letter, which struck a similar cautionary note about the opacity and fragility of private credit lending.

The “Theater Fire” Warning | Buffett on Contagion Risk

Speaking in his first public remarks since stepping back from day-to-day operations at Berkshire Hathaway, Buffett told CNBC that “everyone in the banking system affects each other, and a problem that occurs in one place can spread to another.” He likened a potential liquidity crisis to panic in a crowded theater: “If someone yells fire in a crowded theater, everyone runs, but it's still better to be the first one to the door.”

Asked whether the private credit market is troubled enough to cause contagion, Buffett did not name specific firms but noted that the speed of growth in the sector, from roughly $800 billion in 2020 to an estimated $1.8 trillion today, has outpaced the development of the risk infrastructure needed to monitor it. “When something grows that fast, the people making the loans and the people overseeing the loans are not the same quality you get in a mature market,” he said.

Dimon's Annual Letter | “Opacity Is Not a Feature, It's a Risk”

Jamie Dimon's 2026 shareholder letter, published Monday morning, devoted an unusually lengthy section to private credit. Dimon wrote that JPMorgan has “no issue with private credit as a concept” but warned that the sector's lack of mark-to-market pricing, limited disclosure requirements, and layered leverage structures create risks that are difficult for regulators and counterparties to assess.

“Opacity is not a feature, it's a risk,” Dimon wrote. He noted that banks are exposed to private credit through multiple channels: direct lending partnerships, warehouse lines of credit to private credit funds, CLO tranches backed by private credit loans, and the balance sheets of insurance companies that banks insure or reinsure. A credit event in one layer could cascade through all of them.

Transmission Channel	How Banks Are Exposed
Direct lending partnerships	Banks co-originate loans with private credit funds, sharing credit risk
Warehouse lines	Banks provide short-term leverage to funds to warehouse loans before securitization
CLO tranches	Banks hold senior tranches of collateralized loan obligations backed by private credit
Insurance company balance sheets	Banks insure or reinsure firms (e.g. Athene, Global Atlantic) heavy in private credit
Counterparty exposure	Banks act as swap and derivative counterparties to private credit vehicles

Bank exposure channels to private credit risk, per Dimon 2026 shareholder letter

Private Credit Growth | From $800B to $1.8T in Five Years

The warnings from Buffett and Dimon land at a moment when the private credit market is already showing signs of stress. ObjectWire reported in March that over $4.6 billion in investor capital was trapped in private credit funds operated by Blackstone, BlackRock, Blue Owl, and Ares, with more than $13 billion in Q1 redemption requests hitting withdrawal caps across the sector.

The growth trajectory is what concerns both men. Private credit expanded to fill the gap left by banks that pulled back from middle-market lending after the 2008 financial crisis and the subsequent tightening of capital requirements under Basel III. The asset class offered institutional investors higher yields than public bonds and floating-rate protection against rising interest rates. But as the sector scaled, lending standards loosened. Leverage ratios on private credit deals have crept higher, covenant protections have thinned, and the average credit quality of borrowers has declined, according to data from Moody's and S&P Global.

Why It Matters Now | The Rate Environment and Refinancing Wall

The Federal Reserve has held interest rates at elevated levels longer than most market participants expected. For private credit borrowers, many of whom hold floating-rate loans, that means debt service costs have risen steadily. Companies that took on private credit at 2021 or 2022 terms are now paying significantly more in interest, compressing margins and, in some cases, tipping into distress.

A refinancing wall is approaching. An estimated $500 billion in private credit loans originated in 2021 and 2022 will need to be refinanced or extended by the end of 2027. If credit conditions remain tight or if a recession materializes, a significant share of those borrowers may struggle to refinance on acceptable terms, forcing losses that private credit funds have so far managed to defer through loan amendments and payment-in-kind structures.

Regulatory Gap | Who Oversees a $1.8 Trillion Market?

Both Buffett and Dimon, from different angles, pointed to the same structural problem: private credit exists in a regulatory gap. Unlike banks, private credit funds are not subject to capital requirements, stress testing, or regular supervisory examinations. Unlike public bond markets, private credit transactions are not subject to SEC disclosure rules. The Financial Stability Oversight Council (FSOC) has flagged private credit as a potential systemic risk but has not designated any private credit firm as systemically important, a step that would trigger enhanced oversight.

Dimon argued that regulators should require private credit funds to report standardized data on loan performance, leverage, and liquidity, not to constrain the market, but to ensure that banks and insurance companies can accurately assess their exposure. Buffett, characteristically, took a broader view: “You don't need a new regulation. You need the people running these funds to understand that they're holding other people's money, and other people's money deserves caution.”

Whether the warnings lead to action, regulatory or otherwise, remains to be seen. But when Buffett and Dimon both say the same thing in the same week, the financial sector tends to listen.