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

Most people have never heard of RBB Bancorp. That is probably part of the story here.

The Los Angeles-based bank holding company – parent of Royal Business Bank – just posted its highest quarterly earnings in two years, and the stock is still trading at a meaningful discount to where the regional bank sector sits on a valuation basis. That gap is worth paying attention to.

What Just Happened

Q1 2026 results came in well above analyst forecasts. Net income hit $11.3 million, or $0.66 per diluted share – an 11% jump from Q4 2025 and the strongest quarter the company has had in two years. Revenue of $34.75 million beat the consensus estimate of $32.38 million by over 7%. EPS came in at $0.66 against a forecast of $0.45, a 46% beat.

That is not a rounding error. That is a bank doing something right that analysts did not fully see coming.

The Numbers That Matter

• Net Interest Margin: 3.15% – up 60 basis points over five consecutive quarters of expansion
• Return on Assets: 1.09% – a meaningful improvement from 0.93% in Q3 2025
• Net Interest Income: $30.5 million, up $1 million quarter-over-quarter despite two fewer calendar days
• Nonperforming Assets: Down 9% from the prior quarter and down 24% year-over-year
• Book Value Per Share: $31.10 – tangible book value at $26.84
• Total Assets: $4.2 billion
• Forward EPS Growth: Analysts project EPS growing from $1.63 to $1.92 in the next twelve months – roughly 17.8%

Slight tangent, but worth noting: the margin expansion story here has been quiet and consistent. Five quarters in a row. That kind of trend does not happen by accident – it reflects a real shift in the funding mix, with retail deposits up $50 million and wholesale deposits being deliberately reduced. Cleaner, cheaper funding. That matters to a bank’s long-run earnings power.

Is It Cheap?

Here is what the valuation picture actually looks like right now.

RBB carries a trailing P/E of roughly 13.3x and a forward P/E of approximately 11.3x. The regional bank sector’s three-year average P/E sits near 14.3x. So on a forward basis, RBB is trading at a discount to its own peer group even after posting record quarterly results and a 46% EPS beat.

The PEG ratio is 0.5 – which, if you take earnings growth estimates at face value, suggests the market is not yet pricing in the improvement trajectory. Whether that gap closes is the real question.

Management has guided for mid-to-high single-digit loan growth through 2026 and is targeting a net interest margin range of 3.00% to 3.25% over the medium term. The loan pipeline is described as healthy, with new originations coming in at an average yield of 6.4%. That is not bad in the current rate environment.

What Could Go Wrong

Credit quality is improving but nonperforming assets still sit at $48.8 million. The Q1 margin boost included a one-time FHLB special dividend that management confirmed will not recur. Loan growth was modest at roughly $11 million for the quarter – seasonal, per management, but still light. And the stock is down about 17% over the past year, which means the market has been skeptical here for a while. That skepticism is not entirely irrational.

Five analysts currently rate RBB a Hold, with a 12-month average price target of $25.80. Keefe Bruyette recently raised their target to $27 from $23. That is meaningful – one of the few firms covering this name moving in a constructive direction.

Cheap Investor Scorecard

• Forward P/E below sector average: Yes (11.3x vs. ~14.3x sector)
• Earnings growth trajectory: Positive – 17.8% projected EPS growth
• Margin expansion: Yes – five consecutive quarters, NIM at 3.15%
• Credit quality trend: Improving – NPAs down 24% year-over-year
• Earnings beat vs. forecast: Strong – 46% EPS beat in Q1 2026
• Analyst price target upside: Moderate – $25.80 average, $27 high
• Dividend: $0.16 per quarter, consistent
• Balance sheet: $4.2 billion in total assets, stable capital ratios

The case for RBB is not that it is a high-growth name. It is that a bank with improving fundamentals, five quarters of margin expansion, and a two-year earnings high is still trading below where its peer group is valued. That is the kind of dislocation worth watching – not because the story is finished, but because it is still being written.