Why does quality score matter for value investing?

Quality Score is a quality metric documented across Warren Buffett's 50+ years of Berkshire Hathaway shareholder letters and the broader value-investing canon (Graham, Fisher, Lynch, Greenblatt). It feeds into the Buffett-Fit composite score on invest-like - graders apply it consistently across every public stock so you can compare like-for-like.

How is quality score different from roic?

Quality Score and roic are both quality metrics - see the linked term for the distinction in mechanics and use. The Buffett-Fit framework on invest-like uses both in the composite score with different pillar weights.

Quality Score - Definition + How Buffett Uses It

Invest-like's 0–100 composite score combining ROIC, margin stability, balance-sheet strength, and earnings consistency. Higher = more durable business.

What it is

A single number summarising everything Buffett looks at on the "is this a good business?" side of the analysis (separate from "is the price right?"). Computed from:

ROIC (5-year average + TTM): rewarded above 12%, penalised below 5%
Gross margin stability: 5-year standard deviation, lower is better
Balance-sheet health: net debt/EBITDA, current ratio, interest coverage
Earnings consistency: % of last 5 years profitable, max single-year EPS decline
Growth quality: free-cash-flow growth, share-count discipline (no dilution)

How to read it

80–100: Excellent - Buffett-grade quality, the businesses you'd want to own forever
65–79: Good - solid businesses, often available at fair prices
50–64: Fair - average for the market, depends heavily on price
< 50: Poor - structural problems, avoid unless deeply discounted

Only ~9% of the 12,000+ stocks tracked clear the 80 threshold. That rarity is the point - true quality is uncommon, and value investing rewards patience for it.

Quality Score

What it is

How to read it

Related terms

See it on a real stock

Related on invest-like