# What Does Banco di Desio e della Brianza SpA’s (BIT:BDB) PE Ratio Tell You?

The content of this article will benefit those of you who are starting to educate yourself about investing in the stock market and want to begin learning about how to value company based on its current earnings and what are the drawbacks of this method.

Banco di Desio e della Brianza SpA (BIT:BDB) is trading with a trailing P/E of 6.3x, which is lower than the industry average of 9.8x. Although some investors may jump to the conclusion that this is a great buying opportunity, understanding the assumptions behind the P/E ratio might change your mind. Today, I will explain what the P/E ratio is as well as what you should look out for when using it.

### What you need to know about the P/E ratio

A common ratio used for relative valuation is the P/E ratio. By comparing a stock’s price per share to its earnings per share, we are able to see how much investors are paying for each dollar of the company’s earnings.

Formula

Price-Earnings Ratio = Price per share ÷ Earnings per share

P/E Calculation for BDB

Price per share = €2.16

Earnings per share = €0.342

∴ Price-Earnings Ratio = €2.16 ÷ €0.342 = 6.3x

On its own, the P/E ratio doesn’t tell you much; however, it becomes extremely useful when you compare it with other similar companies. We preferably want to compare the stock’s P/E ratio to the average of companies that have similar features to BDB, such as capital structure and profitability. A quick method of creating a peer group is to use companies in the same industry, which is what I will do. Since it is expected that similar companies have similar P/E ratios, we can come to some conclusions about the stock if the ratios are different.

BDB’s P/E of 6.3x is lower than its industry peers (9.8x), which implies that each dollar of BDB’s earnings is being undervalued by investors. This multiple is a median of profitable companies of 15 Banks companies in IT including Intesa Sanpaolo, BPER Banca and Unione di Banche Italiane. Therefore, according to this analysis, BDB is an under-priced stock.

### Assumptions to watch out for

However, before you rush out to buy BDB, it is important to note that this conclusion is based on two key assumptions. The first is that our “similar companies” are actually similar to BDB. If the companies aren’t similar, the difference in P/E might be a result of other factors. For example, if you are inadvertently comparing lower risk firms with BDB, then BDB’s P/E would naturally be lower than its peers, since investors would value those with lower risk with a higher price. The other possibility is if you were accidentally comparing higher growth firms with BDB. In this case, BDB’s P/E would be lower since investors would also reward its peers’ higher growth with a higher price. The second assumption that must hold true is that the stocks we are comparing BDB to are fairly valued by the market. If this assumption does not hold true, BDB’s lower P/E ratio may be because firms in our peer group are being overvalued by the market.

### What this means for you:

You may have already conducted fundamental analysis on the stock as a shareholder, so its current undervaluation could signal a good buying opportunity to increase your exposure to BDB. Now that you understand the ins and outs of the PE metric, you should know to bear in mind its limitations before you make an investment decision. Remember that basing your investment decision off one metric alone is certainly not sufficient. There are many things I have not taken into account in this article and the PE ratio is very one-dimensional. If you have not done so already, I highly recommend you to complete your research by taking a look at the following:

1. Future Outlook: What are well-informed industry analysts predicting for BDB’s future growth? Take a look at our free research report of analyst consensus for BDB’s outlook.
2. Past Track Record: Has BDB been consistently performing well irrespective of the ups and downs in the market? Go into more detail in the past performance analysis and take a look at the free visual representations of BDB’s historicals for more clarity.
3. Other High-Performing Stocks: Are there other stocks that provide better prospects with proven track records? Explore our free list of these great stocks here.

To help readers see pass the short term volatility of the financial market, we aim to bring you a long-term focused research analysis purely driven by fundamental data. Note that our analysis does not factor in the latest price sensitive company announcements.

The author is an independent contributor and at the time of publication had no position in the stocks mentioned. For errors that warrant correction please contact the editor at editorial-team@simplywallst.com.