Last updated: Abril 2026
Stock Valuation: Complete Guide to Valuing B3 Companies
Stock valuation is the process of estimating the intrinsic value of a company, regardless of market price. According to Aswath Damodaran, NYU finance professor and the world's leading authority on valuation, "valuation is the bridge between the stories we tell about companies and the numbers we pay for them." With over 400 companies listed on B3, mastering valuation is essential to identify undervalued stocks and make informed investment decisions.
Best methods for calculating stock valuations
There are three main methods used by professional analysts to calculate fair stock value. Each is suited to different investment scenarios.
| Method | Best for | Complexity | Accuracy |
|---|---|---|---|
| Discounted Cash Flow (DCF) | Companies with predictable cash flows | High | High — market gold standard |
| Multiple Valuation (P/E, EV/EBITDA) | Quick comparison between sector peers | Low | Medium — depends on comparables |
| Gordon Growth Model (DDM) | Companies with stable, recurring dividends | Low | Medium — limited to dividend payers |
How to do a DCF valuation: step by step
- 1
Collect financial statements
Gather income statements, cash flow statements, and balance sheets from the last 5 years. On Valoro, this data is loaded automatically from the company ticker.
- 2
Project future cash flows (FCFF)
Estimate revenues, costs, and investments for the next 5 to 10 years. Use the direct method (projecting FCFF directly) or indirect (projecting income statement + cash flow + balance sheet).
- 3
Calculate the discount rate (WACC)
WACC (Weighted Average Cost of Capital) reflects the opportunity cost of invested capital. It combines the cost of equity and cost of debt.
- 4
Calculate terminal value (perpetuity)
Estimate the value of all cash flows beyond the projection period, using a perpetual growth rate (typically between 2% and 4% for Brazil).
- 5
Discount to present value and calculate price per share
Bring all future cash flows to present value using WACC. Divide by the number of shares to find fair value per share.
Learn to value stocks from scratch
If you're just starting out, you don't need to master every method at once. The most important concept is intrinsic value: the price a stock should have based on company fundamentals, not market sentiment. Start with the multiples method (P/E) for a quick reference, then advance to DCF when you want more precision. Valoro was designed for exactly this journey — with a guided flow that takes you from ticker to complete valuation in under 5 minutes.
Frequently asked questions
What is the best valuation method for beginners?^
For beginners, the multiples method (P/E, P/BV) is the most accessible. It lets you compare companies in the same sector quickly. As you gain experience, DCF offers more precise and well-founded analyses.
How long does it take to complete a full valuation?^
With spreadsheets, a complete DCF valuation can take over 20 hours between data collection, modeling, and review. On Valoro, the average time is 4 minutes and 32 seconds, thanks to data automation and the guided flow.
Is valuation an exact science?^
No. Valuation involves subjective assumptions — growth rate, cost of capital, perpetuity. Two analysts can arrive at different values for the same company. That's why Valoro lets you compare public valuations from other analysts.
Do I need to know accounting to do valuation?^
Basic knowledge of financial statements (income statement, cash flow, balance sheet) helps, but it's not required. Valoro loads data automatically and guides you through each step of the process.
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