Are Investors Undervaluing Grupo Aeroportuario del Sureste, S. A. B. de C. V. (BMV:ASURB) By 28%?

How far off is Grupo Aeroportuario del Sureste, S. A. B. de C. V. (BMV:ASURB) from its intrinsic value? Using the most recent financial data, we'll take a look at whether the stock is fairly priced by taking the forecast future cash flows of the company and discounting them back to today's value. Our analysis will employ the Discounted Cash Flow (DCF) model. It may sound complicated, but actually it is quite simple!

Remember though, that there are many ways to estimate a company's value, and a DCF is just one method. If you want to learn more about discounted cash flow, the rationale behind this calculation can be read in detail in the Simply Wall St analysis model.

Check out our latest analysis for Grupo Aeroportuario del Sureste S. A. B. de C. V

Is Grupo Aeroportuario del Sureste S. A. B. de C. V fairly valued?

We're using the 2-stage growth model, which simply means we take in account two stages of company's growth. In the initial period the company may have a higher growth rate and the second stage is usually assumed to have a stable growth rate. To begin with, we have to get estimates of the next ten years of cash flows. Where possible we use analyst estimates, but when these aren't available we extrapolate the previous free cash flow (FCF) from the last estimate or reported value. We assume companies with shrinking free cash flow will slow their rate of shrinkage, and that companies with growing free cash flow will see their growth rate slow, over this period. We do this to reflect that growth tends to slow more in the early years than it does in later years.

Generally we assume that a dollar today is more valuable than a dollar in the future, so we discount the value of these future cash flows to their estimated value in today's dollars:

10-year free cash flow (FCF) forecast

	2022	2023	2024	2025	2026	2027	2028	2029	2030	2031
Levered FCF (MX$, Millions)	Mex$6.22b	Mex$9.18b	Mex$10.8b	Mex$12.3b	Mex$13.8b	Mex$15.2b	Mex$16.7b	Mex$18.2b	Mex$19.7b	Mex$21.2b
Growth Rate Estimate Source	Analyst x1	Analyst x1	Est @ 17.28%	Est @ 14.23%	Est @ 12.09%	Est @ 10.59%	Est @ 9.54%	Est @ 8.81%	Est @ 8.3%	Est @ 7.94%
Present Value (MX$, Millions) Discounted @ 13%	Mex$5.5k	Mex$7.2k	Mex$7.4k	Mex$7.5k	Mex$7.4k	Mex$7.3k	Mex$7.0k	Mex$6.8k	Mex$6.5k	Mex$6.2k

("Est" = FCF growth rate estimated by Simply Wall St)
Present Value of 10-year Cash Flow (PVCF) = Mex$69b

After calculating the present value of future cash flows in the initial 10-year period, we need to calculate the Terminal Value, which accounts for all future cash flows beyond the first stage. For a number of reasons a very conservative growth rate is used that cannot exceed that of a country's GDP growth. In this case we have used the 5-year average of the 10-year government bond yield (7.1%) to estimate future growth. In the same way as with the 10-year 'growth' period, we discount future cash flows to today's value, using a cost of equity of 13%.

Terminal Value (TV)= FCF₂₀₃₁ × (1 + g) ÷ (r – g) = Mex$21b× (1 + 7.1%) ÷ (13%– 7.1%) = Mex$377b

Present Value of Terminal Value (PVTV)= TV / (1 + r)¹⁰= Mex$377b÷ ( 1 + 13%)¹⁰= Mex$110b

The total value, or equity value, is then the sum of the present value of the future cash flows, which in this case is Mex$179b. The last step is to then divide the equity value by the number of shares outstanding. Compared to the current share price of Mex$428, the company appears a touch undervalued at a 28% discount to where the stock price trades currently. The assumptions in any calculation have a big impact on the valuation, so it is better to view this as a rough estimate, not precise down to the last cent.

The assumptions

We would point out that the most important inputs to a discounted cash flow are the discount rate and of course the actual cash flows. If you don't agree with these result, have a go at the calculation yourself and play with the assumptions. The DCF also does not consider the possible cyclicality of an industry, or a company's future capital requirements, so it does not give a full picture of a company's potential performance. Given that we are looking at Grupo Aeroportuario del Sureste S. A. B. de C. V as potential shareholders, the cost of equity is used as the discount rate, rather than the cost of capital (or weighted average cost of capital, WACC) which accounts for debt. In this calculation we've used 13%, which is based on a levered beta of 1.053. Beta is a measure of a stock's volatility, compared to the market as a whole. We get our beta from the industry average beta of globally comparable companies, with an imposed limit between 0.8 and 2.0, which is a reasonable range for a stable business.

Moving On:

Although the valuation of a company is important, it ideally won't be the sole piece of analysis you scrutinize for a company. It's not possible to obtain a foolproof valuation with a DCF model. Rather it should be seen as a guide to "what assumptions need to be true for this stock to be under/overvalued?" For instance, if the terminal value growth rate is adjusted slightly, it can dramatically alter the overall result. Can we work out why the company is trading at a discount to intrinsic value? For Grupo Aeroportuario del Sureste S. A. B. de C. V, we've put together three important elements you should further examine:

1. Risks: We feel that you should assess the 1 warning sign for Grupo Aeroportuario del Sureste S. A. B. de C. V we've flagged before making an investment in the company.
2. Future Earnings: How does ASUR B's growth rate compare to its peers and the wider market? Dig deeper into the analyst consensus number for the upcoming years by interacting with our free analyst growth expectation chart.
3. Other Solid Businesses: Low debt, high returns on equity and good past performance are fundamental to a strong business. Why not explore our interactive list of stocks with solid business fundamentals to see if there are other companies you may not have considered!

PS. The Simply Wall St app conducts a discounted cash flow valuation for every stock on the BMV every day. If you want to find the calculation for other stocks just search here.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.