I have spent a lot of time on this blog discussing a number of qualitative factors that I think are very important in determining the value of a business. In this post I will discuss how I ‘quantify’ the value of a business.
My quantitative valuation model is a basic ‘Economic Value Model’. I determine the ‘central case’ intrinsic value of a business based on my estimate of its future ROIC[1], and asset growth.[2] My model assumes a business can sustain this predicted ROIC, and asset growth, for five years. After five years, I assume the business’s predicted ROIC will slowly revert to my discount rate and that there will be no further profitable asset growth.[3] I discuss why I assumed this further below. But firstly I want to make some general points about my quantitative model.
How I limit the risks of forecasting, in my valuation model
Using a valuation model requires me to make predictions about a business’s future. The major risk with making such predictions is that I may value a business for far more than it is probably worth. I try to limit this risk by:
- Assuming the business’s ROIC, and asset growth, will never be higher than it has been historically; [4]
- Assuming that the business will only sustain its predicted ROIC, and asset growth, for five years; and,
- Most importantly, having a large ‘margin of safety’[5].
Despite the risks of using a valuation model, I think Damodaran is correct when he says:
“Those who disdain valuation models for their potential errors end up using far cruder approaches (such as comparing P/E ratios or applying EBIT multiples)… they choose to sweep the uncertainties (of valuation) under the rug and act as if they did not exist”.[6]
Why I do not use comparable market valuations
I do not value a business by using ‘comparable’ private or public market valuations because market sentiment can heavily influence these valuations.
Why my valuation model assumes that a business will only sustain a high ROIC for a maximum of five years before it slowly falls to my discount rate
I assume this because of competition and ‘reversion to the mean’.
My valuation model assumes that a business with both a sustainable competitive advantage and a high ROIC, will only sustain its high ROIC for a maximum of five years before it slowly falls to my discount rate.[7] I have assumed this because I could easily overestimate the strength and sustainability of a business’s competitive advantage. If I am wrong, and I do not make this assumption, I could dramatically overvalue the business.
I will discuss the more detailed issue of why my quantitative valuation model assumes a business will only have profitable asset growth for five years in my next post.
[1] A business’s ROIC is its Return on Invested Capital. It tells you how profitable a business has been. It does this by telling you the amount of capital the business needed to produce its profit.
[2] These are determined on both quantitative and qualitative criteria.
[3] My valuation model is very similar to the one used by Deutsche Bank’s CROCI model. The good news is that Deutsche Bank’s research has shown that their CROCI based valuations closely approximate the market’s valuation of a business, over the medium term. This means that my valuation of a business is a good proxy for the price that the market will ultimately pay for a business. See P203, ‘Cash Return On Capital Invested: Ten Years Of Investment Analysis With The CROCI Economic Profit Model’, Pascal Costantini, 2006.
[4] Except for the last year.
[5] For a detailed discussion of the concept of ‘Margin of Safety’ see: http://thefallibleinvestor.com/2010/02/17/my-investment-process-the-basics-part-2/
[6] Chapter 23 P 30, ‘Investment Valuation’, Aswath Damodaran.
[7] Many business’s with a high ROIC will have this return driven down to the average ROIC for a business in 5 years or less, see ‘Great 10-year Record = Great Future, Right’, Tweedy, Browne Company.