Big Bank Stocks Set To Gain As Capital Relief Thins Buffers

Authored by Michael Ball, Bloomberg macro strategist,

US regulators’ capital requirement rewrite looks set to help big banks in the near term, because it frees up balance sheets for lending, buybacks and Treasury intermediation.

The tradeoff is simple - thinner capital cushions leave the system less resilient when the credit cycle turns.

This is a broad regime shift. Regulators are easing and redesigning Basel III, G-SIB surcharges, leverage rules and stress tests, with mortgage and servicing rules also in play.

The tone has turned sharply since the tougher 2023 Basel endgame push by Michael Barr, the Fed’s former Vice Chair for Supervision.

Under Michelle Bowman, who currently has the role, the framework is moving away from post-crisis maximalism and toward capital efficiency, risk sensitivity and greater intent transparency.

The biggest winners are the largest US banks.

Bloomberg Intelligence estimates that lower G-SIB surcharges alone could release about $73 billion of surplus CET1 capital, with JPMorgan the largest beneficiary.

A milder Basel rewrite still pushes the other way, though the drag looks closer to $41 billion — far below what banks feared in 2023, BI says. Add leverage relief and the net effect is more room to grow assets and return capital.

The Fed’s decision to hold current stress capital buffers in place until 2027 adds to that easier backdrop, even with the 2026 stress scenario still severe.

h/t to Katanga Johnson

For markets, that argues for a friendlier backdrop for bank equities and better Treasury market plumbing, not a dramatic system-wide balance-sheet change.

Citigroup strategists see upcoming US bank rule changes, including possible LCR tweaks, as unlikely to force a major deleveraging wave or meaningfully reduce reserve demand.

Moody’s makes the cleaner long-term point: The package is credit negative overall because lower capital means less loss-absorbing capacity.

That leaves the net effect straightforward - better earnings power and flexibility now, weaker resilience later.