NB Bancorp, Inc. (NBBK) Fair Value 2026

NBBK · Savings Institutions, Not Federally Chartered ·

By CirclFi Research Team · Data from SEC EDGAR, FRED & GDELT

Quality Score

8.3 /10

32 fundamental signals · 12 models active

Value Trap Risk

(—/100)

Quick Summary — As of 2026-07-13, NB Bancorp, Inc. (NBBK) trades at $21.02, approximately 15% below CirclFi’s Bayesian DCF fair value of $24.73. QOC: 8.3/10. 12/13 models active.

Key Facts

Ticker
NBBK
Price
$21.02
Quality Score
8.3/10
Value Trap Risk
—/100
Models Active
12/13
Last Updated
Strength: First Chicago suggests +122.4% upside with 44% confidence
Risk: Limited model coverage (12/13) may reduce confidence

Valuation Matrix

12 Intrinsic Value Models vs. Current Price ($21.02)

Core Models (Unlocked)
Model Fair Value Upside
Bayesian DCF
High Conviction
$24.73 +17.7%
Earnings Power Value
Medium Conviction
$6.88 -67.3%
CUCE Ensemble
Low Conviction
$23.43 +11.5%
First Chicago
Medium Conviction
$46.74 +122.4%

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What Is NB Bancorp, Inc. (NBBK) Worth in 2026?

According to the CirclFi Deep Alpha Valuation Engine, NB Bancorp, Inc.'s intrinsic value is estimated at a composite $26.06, showing conflicting signals at the current price of $21.02. While the average implied return is +24.0%, model disagreement is elevated with a gap of +261.1% between the most bullish and bearish estimates. The most optimistic model, ML-RIV, places fair value at $56.43 (+168.5%), while Markov DDM — the most conservative — estimates $1.54 (-92.7%). This +261.1% gap reflects genuine analytical uncertainty about NB Bancorp, Inc.'s intrinsic worth.

What Do the Models Say About NBBK?

12 of 13 models are currently active for NBBK. Of these, 6 models suggest upside while 6 models suggest overvaluation. The Bayesian DCF estimates NBBK's intrinsic value at $24.73, implying +17.7% upside from the current price. See which stocks rank higher →

How Does NBBK Rank in Savings Institutions, Not Federally Chartered?

Among 22 Savings Institutions, Not Federally Chartered stocks, NBBK ranks #6 by Quality of Company score. CirclFi's QOC score of 8.3/10 evaluates 32 fundamental signals. A score of 8.3 places NBBK in the top tier.

NB Bancorp, Inc. operates in a competitive landscape where fundamental quality metrics are key differentiators for long-term value creation.

Is NBBK a Value Trap?

The Value Trap algorithm is not active for NBBK. The score cross-references apparent undervaluation against fundamental deterioration signals. Browse lowest value-trap stocks →

Multi-Model Methodology

12 of 13 models are active for NB Bancorp, Inc.. Broad coverage provides high confidence. Each model applies a fundamentally different valuation philosophy. See the complete methodology →

According to the CirclFi Quality of Company (QOC) framework, which evaluates 32 signals including margin stability, revenue growth trajectory, leverage, and free cash flow generation, NB Bancorp, Inc. is rated at 8.3/10. This strong-tier score demonstrates strong fundamentals across the majority of our quality signals.

The gap between the most bullish and bearish model spans +261.1% — demonstrating why single-model analysis is dangerous. Browse all stocks with 13-model coverage →

Data Sources & Confidence

Every NBBK valuation is built from SEC EDGAR XBRL filings — 700+ standardized financial tags. Macroeconomic context from FRED calibrates discount rates, while GDELT news sentiment feeds into our Sentiment SOTP model. All pipelines run daily. Read the complete data methodology →

Across NBBK's 12 active models, average confidence is 40%. Lower confidence may reflect limited history or high volatility.

CirclFi's output is a research starting point, not a buy/sell signal. All data updates daily. Read the full methodology →

This analysis is produced by the CirclFi Valuation Engine using quantitative models applied to SEC EDGAR filings, public market feeds, and FRED macroeconomic indicators. It is not financial advice.

Read the full investment analysis: Should You Buy NB Bancorp, Inc. Stock in 2026? →

Bull case, bear case, risk factors & peer comparison — updated daily

Which Similar Savings Institutions, Not Federally Chartered Stocks Should You Also Analyze?

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Frequently Asked Questions About NB Bancorp, Inc.

What is NB Bancorp, Inc.'s intrinsic value in 2026?

Based on CirclFi's 13-model analysis, NB Bancorp, Inc. (NBBK) has multiple fair value estimates. The Bayesian DCF model runs 10,000 Monte Carlo simulations with jump-diffusion to estimate intrinsic value at $24.73. The Quality of Company score is 8.3/10 across 32 fundamental signals. All models use SEC EDGAR filings updated daily. See our methodology page for how each model works.

Is NBBK overvalued or undervalued right now?

At $21.02, 6 of 12 active models suggest NBBK may be undervalued, while 6 indicate potential overvaluation. The assessment depends on which methodology best fits NB Bancorp, Inc.'s business model in Savings Institutions, Not Federally Chartered.

What does a Quality of Company score of 8.3 mean for NBBK?

NB Bancorp, Inc.'s QOC of 8.3/10 reflects 32 fundamental signals: profitability margins, revenue growth consistency, balance sheet leverage, free cash flow generation, and capital allocation efficiency. Scores above 7 indicate strong fundamentals and disciplined management.

How many valuation models does CirclFi run on NBBK?

CirclFi analyzes NBBK with 13 institutional-grade models daily: Bayesian DCF (Monte Carlo + jump-diffusion), EPV (Greenwald zero-growth), EROIC Spread (McKinsey reinvestment), First Chicago (3-scenario), Markov DDM (regime-switching), ML-RIV (machine learning residual income), Dynamic NAV (asset-based), PWERM (option-theoretic), Regime Cross-Sectional (relative), Sentiment SOTP (hybrid), CUCE Ensemble (meta-model), FTNN Topology (neural network), and RCMH-DCF (conditional regime). Currently 12 of 13 are active for this stock. Read the full methodology →

Is NBBK a value trap in 2026?

CirclFi's Value Trap algorithm does not have sufficient data for NBBK at this time. Browse stocks by value-trap risk →

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