Fed Governor Warns: Private Credit May Trigger “Psychological Contagion,” and Credit Tightening Risks Rise

Federal Reserve (Fed) board governor Michael Barr delivered a speech on May 3, warning that pressures in the private credit market could trigger “psychological contagion,” leading to a broader credit contraction. Bloomberg reported that Barr again opposed loosening the regulatory leash on Wall Street when risks are rising. Barr stepped down as vice chair for supervision of the Fed in February 2025 and currently remains in his role as a governor; this speech is one of his most direct post-resignation warnings about private credit risks.

“Psychological contagion”: stress could spread across asset classes

Barr’s core argument is that private credit is the fastest-growing segment in the current financial system, but also the most weakly covered by regulation. If this segment sees a concentration of defaults or valuation write-downs, investors’ fear of “similar risks” could cross specific asset boundaries, triggering synchronized tightening in other credit markets—such as BBB-rated corporate bonds, commercial real estate, and leveraged bank interbank lending—this is what Barr calls “psychological contagion.”

Contagion does not require actual capital-flow linkages; concern about “where the next blow-up will happen” alone is enough to drive hedging and deleveraging. A historical example is after Lehman Brothers’ collapse in 2008: losses that were originally limited to mortgage-backed securities (MBS) quickly spread to money market funds, commercial paper, and the entire U.S. interbank lending market—psychological linkage is the key transmission mechanism.

Private credit size: $1.7 trillion, rising exposure to the banking system

The U.S. private credit market is now about $1.7 trillion and has grown more than 3x over the past 5 years. Banks have continued accumulating exposure (exposure) to private credit through direct lending, indirectly holding equity in BDCs (business development companies), and via asset securitization channels. Once private credit sees large-scale defaults, banks’ secondary exposures will feed into traditional credit markets.

Barr’s position is that regulation should proactively strengthen before risks build, rather than playing catch-up after a crisis occurs. This stance puts him at odds with some deregulation-oriented regulatory camps (including some members of Congress and Wall Street lobbying groups). The remarks are viewed as Barr’s continuity signal on regulatory direction after leaving the vice chair role.

Next watch items: Fed policy response, bank capital requirements, Q3 credit markets

The next thing to watch is whether other Fed governors follow Barr’s risk warning—especially the specific stance of the current vice chair for supervision. Another item is whether the Fed’s annual bank stress test (CCAR) will incorporate private credit exposures into new scenario assumptions. If the Q3 credit markets see concrete default events, Barr’s “psychological contagion” framework will be put to direct test.

This article: Fed governor Barr warns that private credit could trigger “psychological contagion,” raising the risk of credit tightening, first appearing on Chain News ABMedia.