Is NBBK a high-quality business?

AlphaMadera's AlphaQuality grade scores NB Bancorp, Inc. Common Stock on six pillars — profitability, capital efficiency, balance-sheet strength, growth durability, cash generation, and shareholder yield. The composite letter grade reflects how NBBK compares to a Buffett-style quality bar.

What is NB Bancorp, Inc. Common Stock's AlphaQuality grade?

AlphaQuality assigns a letter grade (A through F) to NBBK based on a six-pillar quantitative model. The live page shows the composite grade plus each pillar's individual score with the underlying metrics.

What makes NBBK a quality stock?

AlphaQuality looks at return on capital, free-cash-flow margins, debt-to-equity, revenue stability, dividend and buyback policy, and operating-margin trend. Stocks scoring well across all six pillars earn higher grades — the methodology favors compounders over cyclicals.

NBBK - NB Bancorp, Inc. Common Stock

Price: -- -- | CONSENSUS: Buy DETAILS | PRICE TARGET: $26.00 DETAILS

AlphaQuality

Quantitative six-pillar business-quality grade

Banks, Insurers & Asset Managers

AlphaQuality — archetype-weighted quantitative grade

B- 64.2 / 100 composite

Composite Grade

Composite of six pillars weighted for banks, insurers & asset managers businesses. Purely quantitative — the six pillars score only reported financials, no analyst input.

Profitability

Weight: 25%

B+ 79.5

Scored using efficiency ratio — bank-archetype substitution.

Efficiency Ratio (FY2025) 57.6% 70/100
Efficiency Ratio Trend -1.88 pp/yr 98/100

Capital Efficiency

Weight: 15%

D 38.0

5yr Avg ROE 5.6% 38/100

Growth Quality

Weight: 15%

A 91.5

Scored using revenue growth cross-checked against efficiency-ratio trend — bank-archetype substitution.

Efficiency Ratio Trend (growth quality check) -1.88 pp/yr 98/100
Revenue-Growth Years (5) 4/5 80/100

Cash Generation

Weight: 15%

F 14.7

Scored using efficiency-ratio stability — bank-archetype substitution.

Efficiency Ratio Stability (σ) 0.10 15/100

Balance Sheet

Weight: 20%

A- 86.8

Scored using equity-to-assets — bank-archetype substitution.

Equity / Assets 12.3% 87/100

Stability

Weight: 10%

C 52.5

EPS Volatility (σ/μ) 0.57 24/100
Negative-Revenue Years (5) 0/5 100/100
Piotroski F-Score 5 56/100

2 of 2 gurus held; 1 added; 1 full exit.

Holders: 2
Avg Δ position: +56.5%
New buys: 0
Full exits: 1

Wood sold -100%
Cooperman increased +113%

How this is calculated

AlphaQuality grades six pillars from 0-100 and weights each by archetype:

Profitability (25%) — Efficiency Ratio (FY2025), Efficiency Ratio Trend
Capital Efficiency (15%) — 5yr Avg ROE
Growth Quality (15%) — Efficiency Ratio Trend (growth quality check), Revenue-Growth Years (5)
Cash Generation (15%) — Efficiency Ratio Stability (σ)
Balance Sheet (20%) — Equity / Assets
Stability (10%) — EPS Volatility (σ/μ), Negative-Revenue Years (5), Piotroski F-Score

The six pillars read only reported financial-statement fields — no analyst targets or consensus ratings. The archetype that picks which pillar formulas apply is not fully price-free, though: it can route a company to the distressed/ungradable archetype based on price vs. its 52-week high, and beta affects one classification check. A minimum of 5 fiscal years of audited statements is required. Insurers and banks are graded on their own methodology — insurers on loss ratio, its trend and stability, and premiums-to-surplus; banks on the efficiency ratio, its trend and stability, and equity-to-assets — rather than on industrial margin/ROIC signals. Distressed, highly leveraged infrastructure, asset-manager, and other financial businesses are declared ungradable rather than forced into a numeric score.