Banks' business loans grew at the fastest pace in a decade, with AI a big driver. The bankers sound cautious

Business lending at the biggest banks just grew almost 10% in a year, with data centers a big driver. The bankers doing the lending are also hedging against it.

By Sean Anees Saifi · Capital Wealth · Published Friday, October 30, 2026 · Source: The Wall Street Journal, Thursday, October 29, 2026, whose market figures are the Wednesday, October 28 close (Heard on the Street)

Key Points

Business loans at the 25 largest U.S. banks grew almost 10% from a year earlier in the third quarter, by Fed data. That's the fastest in over a decade outside the Covid swings.
Bank stocks still lag. The KBW bank index is up around 5% this year against nearly 13% for the S&P 500.
Wells Fargo says it has "very hard limits" on AI exposure. Citizens' chief says his bank keeps asking whether the bubble pops someday.
CoreWeave (CRWV) is down more than 35% in a month and its unsecured bonds have cratered. It fell another 5% on Thursday, Oct. 29.
Big tech is expected to sell about $250 billion of bonds this year and $400 billion next. Oracle's 2039 bond yielded 8.02% in Thursday's table.

10%

Business-loan growth at the 25 largest banks, Q3 from a year earlier

35%

CoreWeave share drop over the past month (Heard, Oct. 29)

$400 billion

Big-tech bond sales expected next year, after $250 billion this year

8.02%

Yield on Oracle's 6.125% bond due 2039, Thursday's table

A steel building frame rising on a concrete slab at a construction site, bundled rebar and coils of orange and blue conduit in the foreground under an overcast sky.

Data-center construction drove the fastest business-loan growth in a decade. The banks funding it are hedging with credit-default swaps and loan sales.

In one line: Banks are lending to the AI build-out at the fastest pace in a decade and openly hedging against it, while AI credit already shows cracks.

Back in 2007, Citigroup's boss said that as long as the music plays, you have to get up and dance. The Journal's Telis Demos opened his Heard column with that line for a reason. Business loans at the biggest banks are growing at the fastest pace in more than a decade, and the AI build-out is a big driver. Yet on their earnings calls, the bankers talked more about caution than growth.

At the 25 largest banks, business loans grew almost 10% from a year earlier in the third quarter, by Fed data. Outside the Covid swings, that's the fastest in more than a decade. Construction lending for commercial real estate rose from the prior quarter for the first time since early 2024. Bankers often point to the data-center build-out as a reason. Yet bank stocks lag. The KBW bank index is up around 5% this year against nearly 13% for the S&P 500. Investors seem to doubt this growth more than they reward it.

JPMorgan's finance chief, Jeremy Barnum, said the bank has to be "really, really on top of things." Wells Fargo's finance chief said it has "very hard limits" on what it'll do. Bruce Van Saun, who runs Citizens, said his bank hedges some of its data-center loans. Even when it seems you can't miss, he said, you keep wondering whether the bubble pops someday. Fifth Third's chief says his bank lends to the companies that build data centers, not to the ones paying for them. PNC's chief said plainly that if AI spending slows, his loan growth slows with it. Banks hedge by buying credit-default swaps, a kind of insurance against a borrower's default, and by selling off pieces of loans.

Credit is already saying something

CoreWeave (CRWV), a cloud company that rents out AI computers and runs on borrowed money, is down more than 35% in a month, the Journal reports. Its unsecured bonds have cratered. On Thursday, Oct. 29, the shares fell another 5%, by Friday's market wrap. Big tech is expected to sell about $250 billion of bonds this year and $400 billion next. Meta is raising $37.5 billion in new shares as a first step toward nearly $100 billion. Broadcom had to sweeten its terms and accept higher rates to get banks moving on a $63 billion AI-chip financing. And Oracle's bond due in 2039 yielded 8.02% in Thursday's table. That's the market asking 8% of an investment-grade borrower.

Our read

This is Fixed Income, IN02, with a side of Investments and Risk, IN04. Credit tends to crack before stocks do. Lenders see the cash flow first, and when they start buying default swaps and selling loans, that's the tell. None of this calls a crash. It does show the people with the most data on this boom buying insurance against it. The desk holds JPMorgan (JPM) in 26 books, Goldman Sachs (GS) in 19, Morgan Stanley (MS) in 16 and Bank of America (BAC) in 11, all at weight. Oracle (ORCL) is held in 13. CoreWeave sits in one book, a satellite sleeve for the chip supply chain, at 16% of that sleeve. Held, nothing added, nothing trimmed.

For your own plan, the thing this story touches is the bond side of your 401(k) or IRA. Open the bond fund's holdings page this week and look for the words corporate and high yield. A total-bond-market fund likely owns some tech company bonds, and a high-yield fund may hold debt from AI builders. If the bond sleeve is there to be the calm part of your money, make sure Treasuries and short paper are doing that job. The bankers are packing umbrellas while the sun's still out. If what you find surprises you, bring it to your next review.

What It Means For Your Portfolio

Watch. Credit is the early warning. Read it.

When the banks funding a boom start hedging it, check what your own bond fund owns.

General planning principles, not advice for anyone in particular. Know what's inside your bond funds, because a total-bond fund holds corporate debt and a high-yield fund holds the riskiest of it. Keep the money you can't afford to lose in Treasuries and short paper. Treat an 8% yield from a big-name borrower as a question, never as a gift.