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BankUnited Cut Deposit Costs in a Hiking Cycle — and the Market Still Won't Pay For It

A 3.16% margin beat, a fourth-quarter guide to 3.2%, and a stock 17% off its February high. The gap is the story.
BKU · Earnings Call · 2026-10-21

The regime flipped, and the margin went the right way anyway

For two years BankUnited built its story on rate cuts that never came. In January the script was explicit: deposit betas of 80% were underwritten against a path with cuts baked in. Three quarters later Raj Singh opened the Q3 call by announcing the opposite world: “The interest rate environment is quite different. Fed is no longer in a hold or loosening monetary policy stance. It has gone the other way. We have had our first rate hike” — Raj Singh, Chairman, President, and CEO · 2026-10-21. The hiking cycle is now the operative frame globally too — Fed rate hike language sits high in the market-wide keyword set for 2026Q4 — and BankUnited is the rare small-cap bank that printed a better number on the turn. Net interest margin came in at 3.16%, beating the 3.15% target management had promised for the fourth quarter. Raj noted the déjà vu himself: same thing happened a year ago. The bigger tell is underneath. Average deposit cost fell 6bp to 1.99% — in a quarter of rising policy rates, a long end that gutted the title business, and what everyone describes as intense deposit competition. “I have yet to see a bank that has actually reduced deposit costs last quarter... Printing a number below 2%, I think that makes me very happy” — Raj Singh, Chairman, President, and CEO · 2026-10-21. Crucially, that was not manufactured by NIDDA growth: average non-interest-bearing deposits were flat, exactly against his own expectation of growth. The cut came out of interest-bearing accounts, hand-to-hand, client by client. Net interest income of $255M, up 4% year over year sits just below the 2018Q4 peak of $263M. Guidance for the fourth quarter is $265M. That is a decade-old high being taken out — not by balance sheet growth, but by price.

The contrarian deposit trade is the whole story

The prior quarter's Q&A is where this becomes interesting. Asked whether further deposit-cost reduction was available, Raj was openly skeptical: “In the future it'll be hard to take down interest-bearing costs because the two-year is at what? 420, 430, and 10-year is now 465 this morning” — Raj Singh, Chairman, President, and Chief Executive Officer · 2026-07-22. Six basis points later, the answer turned out to be: still available, if you're willing to fight for it. Jim Mackey had likewise set the seasonal bar low — “the fourth quarter is, I'll call it flattish. It can be up, but you don't see the rate change as much” — Jim Mackey, Chief Financial Officer · 2026-07-22 — and is now guiding to 3.2%. This is where the report diverges from the sector tape rather than joining it. Among the regional banks that reported in the same window, deposit costs shows up as a headwind at HWC (an increase in deposit cost, promotional rate programs) and cost of deposit is a reported-increase item at ZION. BankUnited is the mirror image. Whether that's genuine pricing power or just a smaller, more commercial skew is the debate — but the direction is unambiguous. Note also the rate hike itself is only one input: the larger point Raj made is that the whole yield curve moved, and the bank is managing to static neutrality rather than making a rates call.

What BankUnited refuses to do

The most consequential content of the call was the list of things it declined. No data centers, no AI data center lending — a stance now repeated across at least two quarters, in a market where that theme is the single biggest price-momentum cluster in the entire global tape (broad, persistent, though cooling on the 90-day window). Raj was pointed about it:

Also, we have steered clear of some of the flashier asset classes like data centers and AI. We don't think a bank our size really is geared towards participating in that. And I know some of our peers are actively participating in that growth as well. There's no way we're getting deposits out of that business if we ever did that, put it that way.

Raj Singh, Chairman, President, and CEO · 2026-10-21
Same logic applies to NDFI exposure, which came down again — from roughly $1.5B to a little under $1.2B, concentrated in lending to private credit funds and BDCs. Tom Cornish's reasoning is a rare explicit credit call on a sector the market is still funding enthusiastically: “Most of that couple of hundred million dollar reduction has been in that area. That's where we'll continue to be very careful because I think the impact in that industry segment from rising rates and heavy use of leverage as we head into next year is not going to be great” — Tom Cornish, Chief Operating Officer · 2026-10-21. And the third abstention is volume itself: core loans grew 4% year over year, but average C&I balances actually declined $300M sequentially because they walked away from transactional, spread-thin corporate paper. That discipline has a cost. Net loans of $24.2B, flat year over year is the number the bears keep pointing at. The commercial banking build-out — the $5-10M ticket middle-market push Raj spent real time on in his closing remarks — is the intended fix, but he conceded it's only a couple of billion dollars and still not big enough to move the needle.

Why the tape disagrees with the print

BKU is down 12.6% over 90 trading days and 17.4% from its February peak of $50.93. That drawdown is the backdrop against which a margin beat and a raised-quarter guide look almost irrelevant. The stock reaction makes more sense once you line up the guidance: efficiency ratio of 38.3%, up 4.2pp year over year, expenses guided to $178M from $175M, and non-interest income that management itself called noisy (a $1.1M lease-asset loss, a $1.9M BOLI swing, $1.8M of capital markets revenue slipping into Q4). The mortgage market is the quiet culprit and it is BankUnited's number-one keyword this quarter for good reason. The title-insurance deposit franchise is the low-cost funding engine, and it is levered to purchase mortgage volumes and the long end of the curve, not the policy rate. Balances fell sharply in September. Tom: “I think balances because we saw a sharp decline in the month of September. I am attributing it largely to what happened to the mortgage market and what happened to rates” — Tom Cornish, Chief Operating Officer · 2026-10-21. Jim added the industry's own view that the purchase market is flat next year. That's why NIDDA guidance is $8.65B — down seasonally — and why the 34% DDA mix target discussed in January is now a slower grind. Against that, capital return is the cushion. $97M of buyback (2.1M shares) in a soft stock quarter, $278M returned year-to-date, CET1 still 12.1% versus a stated 11.5% peer-median target, and a board meeting in November/December to re-up. At 1.17x price to book, the debate is simple — is a bank that cuts deposit costs in a hiking cycle, refuses the AI lending trade, and buys its own stock worth more than the market says? The margin says yes. The flat loan book says not yet.