Price to Earning ratio is a financial metric used to evaluate the relative value of a company’s stock. It is calculated by dividing the market price per share of a company’s stock by its earnings per share (EPS) over a particular period, usually the past 12 months.
The P/E ratio is a useful tool for investors to gauge whether a stock is overvalued or undervalued in relation to its earnings potential.
A high P/E ratio indicates that investors are willing to pay more for each dollar of earnings, indicating that the stock may be overvalued.
Conversely, a low P/E ratio suggests that investors are not willing to pay as much for each dollar of earnings, which may indicate an undervalued stock.
However, it’s important to note that P/E ratios can vary widely across industries and companies, and that they should be used in conjunction with other financial metrics and qualitative factors when making investment decisions.
P/E Ratio is calculated But How ?
The price-to-earnings (P/E) ratio is calculated by dividing the current market price per share of a company’s stock by its earnings per share (EPS) over a specific period, usually the past 12 months. The formula for calculating the P/E ratio is:
P/E Ratio = Market Price per Share / Earnings per Share
For example, let’s say Company XYZ has a current market price of $50 per share and an EPS of $2 over the past 12 months. To calculate the P/E ratio, we would divide the market price per share by the EPS:
P/E Ratio = $100 / $2 = 50
This means that Company XYZ’s stock is trading at 26 times its earnings, which suggests that investors are willing to pay $26 for every $1 of earnings generated by the company.
It’s worth noting that the EPS figure used in the calculation may be the most recent EPS figure, or an estimate of future earnings based on analyst projections.

Also Read :- Why 38 Lakh Investors and Traders Quit Stock Market ?
Additionally, investors may choose to use alternative earnings metrics, such as operating earnings or adjusted earnings, instead of the reported EPS figure, depending on the specifics of the company and the industry.
How Price to Earning Ratio Show Wrong Valuation
There are a number of situations where the P/E ratio may not accurately reflect the true valuation of a company, and it’s important for investors to be aware of these limitations.
Here are a few examples of situations where the P/E ratio may not provide an accurate valuation of a company:
- Cyclical or volatile earnings: If a company’s earnings are highly cyclical or volatile, the P/E ratio may not accurately reflect its true value. For example, a company that is currently experiencing high earnings may have a low P/E ratio that does not reflect the potential for future downturns in its earnings.
- One-time events: If a company has experienced a one-time event that has significantly impacted its earnings over the past 12 months, the P/E ratio may not provide an accurate reflection of its true valuation. For example, if a company incurred a large expense related to a legal settlement in the past year, its P/E ratio may be artificially inflated.
- Different accounting methods: Companies may use different accounting methods to calculate their earnings, which can impact the accuracy of the P/E ratio. For example, a company that uses aggressive accounting methods to inflate its reported earnings may have a lower P/E ratio than a company with more conservative accounting practices.
- Industry-specific factors: Different industries may have different norms when it comes to P/E ratios, and comparing the P/E ratio of a company in one industry to the P/E ratio of a company in another industry may not provide an accurate valuation.
Overall, while the P/E ratio can be a useful tool for evaluating a company’s valuation, it’s important for investors to be aware of its limitations and to use other financial metrics and qualitative factors when making investment decisions.