P/E Ratio (Price/Earnings) is one of the most popular investment multipliers, which shows how undervalued or overvalued the company's shares are for the investor. The popularity of this indicator is explained by the fact that it is quite simple to calculate and at the same time it immediately gives a good characteristic of the attractiveness of stocks. However, like any other indicator, the P/E multiplier has its pros and cons. In this article, we will analyze in detail all aspects of this indicator, starting with calculation methods and ending with application features.
How to calculate P/E
To calculate the P/E multiplier, it is necessary to correlate the company's share price and the company's profit. At the same time, there are 2 ways to calculate P/E:
Calculation of the P/E ratio through price and earnings per share.
In this case, the calculation formula will look like this:
P/E = Price / EPS
Where
- Price is the price of one share of the company.
- EPS (Earnings per share) – the company's earnings per share.
This method of calculation is usually considered classic and the simplest, because all the data for the calculation is easily available: EPS is present in the reporting in a separate line, and the stock price can be taken from stock quotes.
The lower the P/E index, the better. A low coefficient value indicates that the company's shares are undervalued. A high value, on the contrary, most often indicates that the company's shares are overvalued and perhaps this is a financial bubble.
Calculation of P/E through the total cost of the company and the company's profit.
In this case, the formula P/E takes the form:
P/E = Market Cap / Earnings
- Market Cap – the market capitalization of the company or the value of all the company's shares at the market price. It is calculated as the product of the number of shares of the company on the current quotes of these shares.
- Earnings – the company's profit for the period (it is advisable to use annual profit or reduced to annual profit for calculations).
In most cases, this method of calculation is as simple as the first one, except for situations when the company has both ordinary shares and preferred and, for example, depositary receipts. In such situations, for the correct self-calculation of capitalization, you will have to collect a lot of information and conduct a whole series of calculations. Most often this is not necessary, because there are resources on the network where you can see the capitalization of the company. Sometimes capitalization data can also be found on the company's website itself.
As we can see, there is a small error between the two calculation methods. It is caused by several factors at once:
- When calculating capitalization on the company's website, even on the same date, slightly different quotes could be used from those that we took for calculation in the first way.
- When calculating EPS, the so-called non-controlling interest is deducted from the total consolidated profit. This is a part of the consolidated profit of the company received from subsidiaries and attributable to other shareholders of these subsidiaries that are not related to the parent company in any way.
A small error in the calculations of P/E does not play any role, because here we are not talking about any exact measurements as in physics. P/E is a relative indicator and it is important for us to understand how much it is lower or higher in comparison with the indicators of similar companies or in comparison with the average market or industry values. Next, we will look in more detail at how to correctly interpret and use P/E.
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What does P/E show
In order to better understand the economic meaning of the P/E ratio, it is necessary to imagine that you are not just buying a block of shares or several shares of a company, but buying the entire enterprise. Then the figures from the P/E calculations acquire a different meaning. The price or capitalization is the amount that you will pay for this enterprise, and the annual profit is the income from investments in the purchase of this business. As a result, the price ratio/Profit or P/E shows the investor how many years his investments in this business will pay off.
As a result, as we have already said, the lower the P/E indicator, the better. A low P/E tells us that the company is undervalued and is below its fair value. A high P/E indicates the opposite. By purchasing shares with a low P/E, investors expect that in the long term, the market value of the shares will tend to its fair value. As a result, stock prices will rise, as will P/E.
There are also companies on the market whose P/E is very high, for example, around 30. As a rule, in such situations, it is necessary to further understand and see how such an indicator turned out. For example, it may be a one-time situation associated with a sharp drop in profits in the company due to external circumstances (currency fluctuations, etc.). Or, on the contrary, a sharp increase in quotations led to an increase in P/E.
There are also situations when P/E may rise or fall in the entire market as a whole. For example, in 2001, there was a boom of Internet companies in the American market (the dotcom boom), when stock prices grew by themselves, regardless of the real financial performance of the business. The P/E of individual companies reached values of 300, 500, 700, etc. Based on the economic meaning of this indicator, all adequate investors understood that this was an insane revaluation and the formation of another financial bubble. For comparison, the average market P/E on the American market at that time reached 70.
Ideally, the P/E indicator should be compared not only with the average market and industry values of the indicator, but also with the historical P/E values for the company itself.
Thus, for an adequate assessment of P/E, it is worth conducting a comparative analysis of this indicator. The comparison base can be:
- The average market level of P/E.
- Average Industry P/E.
- P/E for similar companies or competitors.
- P/E for the company itself for previous periods.
Types of P/E
It is worth saying that, depending on the features of the P/E calculation and the calculation period, there are several types of P/E.
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Annual P/E
In this case, the current capitalization value or price and the value of profit or EPS for the past calendar year are used for calculations. This is the basic version of the P/E calculation. These are the examples we gave at the beginning of the article. This method of calculating P/E is usually used during the period when we have financial data for the company for the past year, but the profit data for the 1st quarter has not yet been released. As soon as the financial statements for the 1st quarter or subsequent periods appear, the calculation of P/E changes slightly, and we already count the moving P/E or the reduced P/E.
Trailing P/E
This indicator is also referred to in foreign sources as TTM, which means trailing twelve month. This technique is used when we have profit data for some part of the current year, for example, for the 1st quarter of 2021. Then the formula will be used to calculate the annual profit:
Profit = profit for the 2nd quarter of 2020 + profit for the 3rd quarter of 2020 + profit for the 4th quarter of 2020 + profit for the 1st quarter of 2021
If such a calculation is made taking into account the data also for the second quarter of 2021 , the formula will take the form:
Profit = profit for the 3rd quarter of 2020 + profit for the 4th quarter of 2020 + profit for the 1st quarter of 2021 + profit for the 2nd quarter of 2021
Thus, the profit calculation formula seems to "trail" over periods. Then, this profit and current capitalization are used to calculate the moving P/E. Hence the name - trailing P/E.
Relative P/E
There is another way to calculate P/E in the middle of the year, when it is no longer relevant to take annual data for the whole year, and it is incorrect to use data only for a quarter or half a year. This calculation method is based on extrapolation of profit data for several quarters for the whole year.
For example, we have a profit for the 3rd quarter of the current year, we can do the following: divide this profit by 3 and multiply by 4, thus "bringing" the profit indicator to the annual value. This is a kind of forecast. If we had a profit of $75 million for 3 quarters, then according to this formula we get an annual profit of $100 million. Thus, we made an assumption that in the 4th quarter the company would perform no worse than in the previous 3 and earn another $25 million in profit.
The P/E calculated using such profit will be called "reduced" and, as well as the rolling P/E, it is widely used to calculate annual P/E values in periods when there are not yet complete financial data for the current calendar year.
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Forward P/E
Another option for calculating P/E uses forecast profit. The forecast profit can be obtained from the data of analysts or by building your own financial model. It is believed that using Forward P/E helps to identify undervalued companies earlier than usual P/E – at a time when most investors have not noticed them yet and quotes are at a low level.
PEG Ratio
Speaking of various types of P/E, it is also worth mentioning the PEG indicator. The indicator stands for P/E to Growth Rate, i.e. it is the ratio of P/E to the company's profit growth indicator. This indicator is used in cases where the company has a traditionally high P/E, for example, for companies from the US IT industry, where P/E in the region of 50 or more is a normal phenomenon. Such high P/E is usually caused by investors' expectations about the company's future growth rates.
In order to understand how justified such expectations are, the PEG indicator is used. If the company's P/E is 50, and the profit growth rate is planned at 50% this year, then the PEG will be 1 and this will mean that the company's shares have a fair valuation. If the PEG is less than 1, it means that the shares are undervalued, and the values of the indicator more than 1 indicate that the securities may be "overheated".
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P/E Application
The main advantages of the P/E indicator are its simplicity of calculation and efficiency. Therefore, it has gained wide popularity among investors. There is even a whole type of investment, which is called value investing and is based on the search for undervalued companies. A number of academic studies over 100 and even 200 years in different markets have confirmed the effectiveness of this investment strategy in the medium and long term.
These advantages also determine the wide application of this coefficient for various investment purposes:
- P/E is widely used in the search for investment ideas. To quickly filter a large number of stocks, so that further analysis can be carried out only for undervalued companies.
- P/E also serves to assess the investment attractiveness of a particular investment idea. It is best suited for choosing good investment ideas when used in combination with financial analysis of the company's performance.
- For a simplified calculation of the consensus forecast for the company's shares. For example, the current P/E for a company's stock is 6, and we know that for this company, a P/E equal to 8 is considered normal, which means that the company's shares have a growth potential of 33% (33%=8/6 x 100% - 100%) to their fair value.
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Disadvantages of P/E
This multiplier also has its drawbacks:
- P/E is not suitable for evaluating unprofitable companies, since the negative value of the indicator becomes meaningless. At the same time, there are a number of companies for which losses are normal, for example, if the company is in the investment phase of its development. A striking example here could be Tesla. Usually, in such cases, other multipliers are used, reflecting the ratio of price and value for the investor. Such as: P/Ebitda, EV/Ebitda, P/Balance, P/Cash flow, etc.
- P/E is not an absolute indicator. You can always find a good investment idea with a high P/E, as well as a bad investment idea with a low P/E. Therefore, it is not necessary to limit the valuation of shares only with the help of this coefficient - it is also necessary to use other indicators of financial and investment analysis.
- P/E reflects only one source of growth in the shares of companies - namely, the discrepancy between its fair value and the market value. Although in fact, the growth of the business itself, and dividends, and the growth of the market as a whole can also be sources of stock growth.
Conclusion
The P/E ratio is one of the best indicators for investors. He can immediately show you which stocks to pay attention to and concentrate his efforts on analyzing them. However, this indicator has its limitations and do not forget that you need to make your analysis versatile and supplement it with both a detailed financial analysis of the company and an investment one, and also do not neglect the technical picture of the company's shares.
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