Frequently Asked Questions
The essentials about ValueOS—the tools, the data, and how to use them well.
What is ValueOS?
ValueOS is a free research site that applies Warren Buffett's investing criteria to US stocks through three tools: the ValueOS Score (business quality + valuation), the Moat Analyzer (competitive advantage), and the DCF Calculator (intrinsic value). Learn more on the About page.
Learn more →What exactly is the ValueOS Score?
It is a 0–100 Quality Score blending Business Quality (40 points) and Financial Strength (30 points), reported alongside a separate valuation signal. Higher means a higher-quality business—not necessarily a cheap one. See the full guide.
Learn more →How is a company's moat rated?
The Moat Analyzer scores a business on the classic moat sources—brand, network effects, cost leadership, switching costs, and regulatory protection—and assigns a Wide Moat, Narrow Moat, or No Moat rating. Read the full guide.
Learn more →How does the DCF Calculator work?
It starts from the company's latest free cash flow, projects it forward at a capped growth rate, discounts each year at a ~9.5% WACC, adds a terminal value, and compares the intrinsic value to the current price to show a margin of safety. Read the practical guide.
Learn more →Where does the data come from?
Financials are parsed from official SEC EDGAR filings (10-K, 10-Q) and refreshed on every US trading day. Prices come from market data providers. Our methodology and sourcing are described in the Editorial Policy.
Learn more →How many stocks does ValueOS cover?
Over 7,700 US-listed stocks, ranked and scored from the latest filings. Browse the curated rankings to see the highest-quality and most undervalued names.
Learn more →What is a margin of safety?
It is the gap between a conservative estimate of intrinsic value and the current price. Buying below intrinsic value gives you a buffer against errors and bad luck. It is a core idea behind both the DCF tool and value investing.
Learn more →Is ValueOS free, and is it investment advice?
The tools are free to use. ValueOS provides research signals, not personalized investment advice. Always do your own analysis and consult a qualified advisor before making decisions.
Learn more →Ready to research?
Open any stock across the three tools and see these ideas computed live.