Deep Discount Banking: Is RBB Bancorp the Overlooked Regional Play Right Now?

Nobody really talks about RBB Bancorp. That is kind of the point.

The Los Angeles-based bank holding company, parent of Royal Business Bank, just put up its strongest quarterly earnings in two years. Net income came in at $11.3 million, or $0.66 per diluted share. Revenue of $34.75 million came in more than 7% above the consensus estimate of $32.38 million. EPS of $0.66 beat the analyst forecast of $0.45 by 46%. And the stock is still trading at a forward P/E of roughly 11.3x, well below where the broader regional bank sector is valued.

That is the setup in one paragraph. Everything else is detail.

What is interesting is how consistent the underlying improvement has been. Net interest margin hit 3.15% in Q1 2026, up 60 basis points across five consecutive quarters of expansion. Return on assets reached 1.09%, a noticeable move from 0.93% in Q3 2025. Net interest income came in at $30.5 million, up $1 million from the prior quarter, and that was with two fewer calendar days in the period. These are not dramatic headline numbers. But five straight quarters of margin expansion does not happen by accident. It reflects a deliberate shift in the funding mix, with retail deposits up roughly $50 million while higher-cost wholesale funding was pulled back. Cleaner balance sheet, cheaper funding base, better margins. The compounding here is quiet but real.

The part people skip on value plays like this one is credit quality. Nonperforming assets fell 9% from Q4 2025 and are down 24% year-over-year. That trend matters. A bank can have great margins and still be a problem if the loan book is deteriorating. RBB’s is not.

Here is where I am at on valuation. Trailing P/E is around 13.3x. Forward P/E is approximately 11.3x. The regional bank sector’s three-year average P/E sits near 14.3x. So even after a 46% EPS beat and a two-year earnings high, the stock is still priced below its peer group on a forward basis. The PEG ratio is sitting near 0.5, which suggests analysts are projecting roughly 17.8% EPS growth over the next twelve months and the market has not moved to reflect it. Whether it ever does is the question nobody can answer cleanly.

Slight tangent, but it matters: Keefe Bruyette recently raised their price target on RBB to $27 from $23. That is one of the very few analyst moves on this name in either direction. The consensus is five Hold ratings with an average target of $25.80. Not exactly a crowded bull camp, which is either a contrarian signal or a reason for caution depending on how you read it.

Management has guided for mid-to-high single-digit loan growth through 2026. New originations are coming in at an average yield of 6.4%, and they are targeting a net interest margin range of 3.00% to 3.25% over the medium term. Book value per share sits at $31.10, with tangible book at $26.84. Total assets are $4.2 billion. The $0.16 quarterly dividend has been consistent.

Now the honest part.

RBB is down roughly 17% over the past year. The market has looked at this bank and largely passed on it, repeatedly. The Q1 margin included a one-time FHLB special dividend that will not repeat. Loan growth was light at around $11 million for the quarter, seasonal per management but still not impressive. Nonperforming assets are trending down but still total $48.8 million, which is not nothing for a $4.2 billion bank. And the analyst coverage is thin, which cuts both ways.

So is it cheap? By the numbers, yes. Forward P/E at a discount to sector, PEG below 1, improving margins, strengthening credit quality, and a 46% EPS beat with the stock basically flat. That combination is not common. Whether the gap between fundamentals and price is a value opportunity or a value trap is the part that does not resolve cleanly on a spreadsheet. What I can say is that the trend inside the bank has been moving in the right direction for five straight quarters, and the market has not fully acknowledged it yet.

That is usually when it gets interesting.