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Know What a Stock Is Really Worth

The hard numbers behind a company reveal what a stock may really be worth. Combine fair value with our quality score, save promising companies to your watchlist, and use proven tools to build a better portfolio.

Today’s focus

Bristol-Myers Squibb+28%Details →Price $59.58Fair value $75.96Details →

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“This tool is great. I use it every time I want to buy a stock or study a stock. You get a valid calculation if you're buying an over- or undervalued stock. A perfect tool.”

Samad Golzari, GermanyAug 2026
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“Impressive how quickly you implemented that. Thank you, that really helps me.”

DanielAug 2026
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“That was a super quick fix, Peter. Amazing. Your application is a gem for a beginner like me.”

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“I've been using this service and I'm very impressed with its accuracy. It has helped me make better investment decisions and achieve good results. I'm looking forward to future updates and improvements. I definitely recommend giving it a try, especially if you don't have enough time or extensive knowledge about investing.”

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“Amazing Tool. Quick & easy. Exactly what I was looking for! Chapeau! I would recommend it to everyone!”

Gunther Hingsammer, AustriaJul 2026
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“Easy to use, well-designed, and provides a quick, easy-to-understand estimate of fair value. A very useful tool for anyone looking to make more informed investment decisions.”

Hannes Oblak, AustriaJul 2026
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“Not just an amazing website, but also amazing customer service. The error in my watchlist is fixed. Thank you very much for quickly fixing the problem.”

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Dr. Peter Klein, BA Founder

38K 18K 4.1

26 valuation modelsmodels 37 quality factorsfactors 6 AI factorsAI factors 2,000+ data pointsdata points 69 criteria per stock criteria →

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Go ProAlerts, watchlist and the full screener Financial calculatorsDCF, Graham, PEG and more

Updates and community

What has changed

What's new in the tool this weekOct 10, 2026

Hi there, here are the main changes from the last few days.

The watchlist now shows tiles, top bars and a dispersion button.
Market valuation combines models and indices in one chart without plateau.
Portfolio overview displays valuation and quality on a 0-100 scale.
Academy offers a full video course on YouTube in both languages.
Search by ISIN finds companies under previous names too.
Design and mobile view are cleaner now.

Let me know what you think or if you have suggestions.

Peter

What should we improve?

Tell us what is missing or what could work better. We read every suggestion.

Stock discussions

Posts All articles →

Sep 5, 2026P/E Ratio by Sector: Live Valuation Ratios by Industry (P/E, P/S, P/B, EV/EBITDA) Nov 16, 2025Using Excel’s XNPV and XIRR Functions to Handle Irregular Cash Flows in Valuation Sep 28, 2025Building a Comprehensive Stock Fair Value Calculator in Excel Jul 16, 2025Fair Value vs DCF Valuation: Which One Is More Reliable? Apr 27, 2024Extrinsic Value Calculator Made Simple Apr 14, 2024What is the Difference Between Intrinsic and Extrinsic Value?

Frequently Asked Questions

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Is it still worth investing in stocks now?

That depends less on the calendar than on the price. We calculate the fair value of about 35,000+ stocks every day and show how far the whole market, each sector and each single stock sit from it. An expensive market does not rule out undervalued single stocks, it only changes how much you put in at once. See the market and the cheap sectors →

What is Fair Value Calculator?

Fair Value Calculator estimates what a stock is really worth from its fundamentals, not its daily price. For about 35,000+ stocks worldwide it shows a fair value, a quality score and how much evidence backs each estimate, so you can spot over- and undervalued companies at a glance. See the methodology →

How is a stock's fair value calculated?

We estimate a company's intrinsic worth from 26 independent valuation models running on its reported financials, then blend them into one figure weighted by how much trustworthy data backs it. That way the result never hangs on a single formula. See the methodology →

What can I use for free?

Browsing, searching and valuing individual stocks is free and needs no sign-up. For any stock you get the fair value, quality score, evidence status and the bear, base and bull range, plus a free watchlist for a handful of names.

What additional features are included with Pro?

Pro (€9.90 per month or €99 a year, first month €1) adds the full screener across 35,000+ stocks, watchlist alerts when a holding turns over- or undervalued, diversification and market-valuation checks, and every quality factor. You can cancel anytime. See Pro →

Is fair value a buy recommendation?

No. A fair value is an analytical estimate of what a business is worth, not advice to buy, hold or sell. It is a starting point for your own research. Nothing on the site is financial advice, and past results are no guarantee of future outcomes.

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