What is a good starting point for a value investing bank stock screen?

Start with P/B below 1.0-1.2x, P/E below 10-12x, and ROE above 7-8%, then use the Graham Number and Margin of Safety for additional confirmation. The profitability filters are just as important as the valuation filters because they separate genuine bargains from banks that are cheap for a reason.

Bank stocks are a natural fit for value investing because their balance sheets are filled with financial assets (loans, securities, cash) that have identifiable values. Unlike a technology company where book value says little about the business, a bank's book value reflects the actual financial instruments on its books. This makes the price-to-book (P/B) ratio a meaningful valuation anchor for banks, and it's why value screening works particularly well in this sector.

A solid starting screen combines valuation metrics to find cheap stocks, profitability metrics to confirm the business is sound, and a Graham Number check to quantify the potential discount.

Building the Screen

Here are the core criteria for a value-oriented bank stock screen:

  • P/B (price-to-book) below 1.0x to 1.2x identifies banks trading at or below the value of their net assets. The ROE-P/B framework provides the logic here: a bank earning its cost of equity (roughly 8% to 10%) should trade near 1.0x book value. Anything below that level signals either a market mispricing or a bank earning less than shareholders require.
  • P/E (price-to-earnings) below 10x to 12x adds an earnings-based valuation layer. Bank P/E ratios typically range from 8x to 15x, so the lower end of that range often flags banks the market is underpricing relative to current earnings power.
  • ROE above 7% to 8% serves as the profitability floor. This is the filter that separates bargains from value traps. A bank trading at 0.8x book value with a 10% ROE looks very different from one at 0.8x book with a 3% ROE. The first may be a genuine opportunity; the second is cheap because earnings don't justify a higher price.
  • ROAA above 0.60% to 0.70% provides a complementary profitability check. Return on average assets (ROAA) is less affected by differences in leverage across banks, so it catches situations where a bank's ROE looks acceptable only because of thin capitalization.
  • Graham Number Margin of Safety above 0% confirms the stock price is below the Graham Number, a maximum fair price calculated from earnings per share (EPS) and book value per share (BVPS) using Benjamin Graham's formula. BankSift calculates both the Graham Number and Margin of Safety for every bank in the dataset, making this a quick first filter. Sorting by Margin of Safety descending puts the largest discounts at the top of your list.

Why Book Value Matters More for Banks

The case for P/B as a bank valuation tool is straightforward. Most of a bank's assets are financial instruments: loans to businesses and consumers, government securities, mortgage-backed securities, and cash. These have fair values that accountants can measure with reasonable precision, which makes a bank's book value per share a more reliable valuation anchor than it would be for a software company or manufacturer where intangible assets dominate.

This is also why the ROE-P/B relationship is so central to bank valuation. If a bank earns exactly its cost of equity on its book value, the stock should trade at 1.0x book. Banks earning above their cost of equity deserve premiums; banks earning below it should trade at discounts. When a screen finds a bank trading below book value while earning above the cost of equity, that's the kind of disconnect value investors look for.

Separating Genuine Value from Value Traps

The biggest risk in bank value screening is mistaking a structurally troubled bank for an undervalued one. The profitability floors described above catch the most obvious traps, but a few additional red flags help sharpen the filter:

  • Declining ROE over several consecutive years suggests the business is deteriorating, not just temporarily out of favor. One weak year can result from elevated provision charges or a restructuring cost. Three consecutive years of declining returns usually points to something deeper.
  • High non-performing asset ratios signal credit quality problems that may not yet be fully reflected in the earnings numbers. A bank can look profitable today while sitting on a loan portfolio that will generate losses over the next several quarters.
  • Very low or negative tangible book value growth over time indicates the bank is not retaining and compounding capital effectively. Book value should generally grow as the bank retains earnings, so stagnation or decline is a warning sign.
  • An efficiency ratio above 75% to 80% means the bank's operating costs are consuming most of its revenue, leaving little room for profitability improvement without significant restructuring.

Adjusting for Bank Size and Type

Community banks (under $10 billion in assets) and larger regional banks behave differently in value screens. Community banks are often less liquid stocks with wider bid-ask spreads, which can create larger apparent discounts that partly reflect illiquidity rather than true undervaluation. They also tend to have higher efficiency ratios because they lack the scale to spread fixed costs across a large asset base. Bumping the efficiency ratio threshold up to around 70% for community bank screens prevents filtering out otherwise solid small institutions.

Regional banks with $10 billion to $100 billion in assets face heavier regulatory requirements, including stress testing, that can compress returns. Their valuation multiples sometimes reflect this regulatory burden rather than fundamental weakness. For regionals, comparing a bank's P/B to its own historical range rather than just to an absolute cutoff adds useful context. A regional bank at 0.9x book value might be at the low end of its own five-year range, which is a different signal than a bank that has consistently traded at 0.9x.

After the Screen

Screening produces candidates, not investment decisions. Each bank that passes the filters needs individual review. Pull the most recent 10-K filing and look at the loan portfolio composition, deposit mix and stability, earnings trends over three to five years, and capital ratios relative to regulatory minimums.

The central question for each candidate is whether the market's discount reflects a temporary condition or a permanent one. Temporary conditions that value investors often exploit include one-time charge-offs, market-wide sell-offs that drag down all bank stocks regardless of individual quality, and investor neglect of small-cap banks with limited analyst coverage. Structural problems like a shrinking local economy, poor management track record, or a fundamentally unprofitable business model are reasons to pass despite an attractive valuation.

BankSift's Screener Guide includes a dedicated value investing screening strategy with specific filter settings and a walkthrough of the analytical process.

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Key terms: Justified P/B Multiple — see the Financial Glossary for full definitions.

Start a value investing bank stock screen with Graham Number and P/B