How Price To Earnings Ratio Works
The price to earnings ratio is a financial metric that measures a company's stock price relative to its earnings per share, calculated by dividing the current stock price by the company's earnings per share over a specific period, such as a year. This ratio is influenced by factors such as the company's growth prospects, industry, and overall market conditions, and is used by investors to determine whether a stock is overvalued or undervalued.
The Mechanism
The price to earnings ratio is calculated by dividing the current stock price by the company's earnings per share, resulting in a ratio that represents how much investors are willing to pay for each dollar of earnings. For example, a company with a stock price of $100 and earnings per share of $5 would have a price to earnings ratio of 20, indicating that investors are willing to pay $20 for each dollar of earnings.
Step-by-Step
- The company's earnings per share are calculated by dividing the total earnings by the number of outstanding shares, resulting in a figure such as $5 per share.
- The current stock price is then divided by the earnings per share to calculate the price to earnings ratio, such as $100 divided by $5 per share, resulting in a ratio of 20.
- The price to earnings ratio is then compared to the industry average and the overall market to determine if the stock is overvalued or undervalued, with a ratio of 20 being higher than the industry average of 15.
- If the company's growth prospects are high, investors may be willing to pay a higher price to earnings ratio, such as 25, to reflect the expected increase in earnings, as seen in the case of Amazon, which has a price to earnings ratio of 30 due to its high growth prospects.
- The price to earnings ratio can also be influenced by the company's dividend yield, with a higher dividend yield resulting in a lower price to earnings ratio, as seen in the case of Coca-Cola, which has a dividend yield of 3% and a price to earnings ratio of 15.
- The price to earnings ratio can be used to estimate the company's expected return on investment, with a higher ratio indicating a higher expected return, such as a ratio of 25 indicating an expected return of 15% per year.
Key Components
- Earnings per share: the company's total earnings divided by the number of outstanding shares, which is the base figure used to calculate the price to earnings ratio.
- Stock price: the current market price of the company's stock, which is divided by the earnings per share to calculate the price to earnings ratio.
- Industry average: the average price to earnings ratio of the company's industry, which is used as a benchmark to determine if the stock is overvalued or undervalued.
- Growth prospects: the company's expected future growth, which can influence the price to earnings ratio, with higher growth prospects resulting in a higher ratio.
Common Questions
What happens if a company's earnings per share increase? If a company's earnings per share increase, its price to earnings ratio will decrease, assuming the stock price remains constant, as seen in the case of Microsoft, which has seen its earnings per share increase by 10% per year over the past 5 years, resulting in a decrease in its price to earnings ratio from 25 to 20.
What is the impact of a high dividend yield on the price to earnings ratio? A high dividend yield will result in a lower price to earnings ratio, as seen in the case of Procter & Gamble, which has a dividend yield of 4% and a price to earnings ratio of 12.
How does the price to earnings ratio relate to the expected return on investment? A higher price to earnings ratio indicates a higher expected return on investment, as seen in the case of Google, which has a price to earnings ratio of 30 and an expected return on investment of 20% per year.
What happens if a company's growth prospects decrease? If a company's growth prospects decrease, its price to earnings ratio will also decrease, as investors will be less willing to pay a high price for each dollar of earnings, as seen in the case of General Motors, which has seen its growth prospects decrease due to increased competition, resulting in a decrease in its price to earnings ratio from 20 to 15.