What is the price-to-earnings ratio? How to calculate it? A guide to the price-to-earnings ratio that newbies can grasp.

The price-to-earnings ratio, also known as PE or PER (Price-to-Earning Ratio), represents how many years it would take for an investor to recoup their investment cost. Therefore, this indicator is often used to assess whether a company's stock is currently overvalued or undervalued.

Calculation Method of Price-to-Earnings Ratio

There are mainly two methods for calculating the price-to-earnings ratio:

1. Divide the stock price by the earnings per share (EPS)
2. Divide the company's market value by the net profit attributable to common shareholders.

In practical applications, we usually adopt the first method for calculations.

Different Types of Price-to-Earnings Ratios

• Historical Price-to-Earnings Ratio:

  • Static Price-to-Earnings Ratio = Current Stock Price / Last Year's Earnings Per Share
  • Rolling Price-to-Earnings Ratio = Current Stock Price / Sum of Earnings Per Share for the Most Recent Four Quarters

• Price-to-Earnings Ratio (Dynamic P/E Ratio) = Current Stock Price / Estimated Annual Earnings Per Share

Suitable Price-to-Earnings Ratio Range

To determine whether the price-to-earnings ratio is reasonable, it can be compared with other companies in the same industry or analyzed against the company's historical data.

Using Price-to-Earnings Ratio for Stock Investment

Investors can use the price-to-earnings ratio trend chart to intuitively determine whether a stock is overvalued or undervalued.

Limitations of Price-to-Earnings Ratio

1. The impact of debt on the value of the company has not been considered.
2. It is difficult to accurately define the high and low standards of the price-to-earnings ratio.
3. Unable to assess companies that have not yet realized profits

The Difference Between PE, PB, and PS

PE: Price Earnings Ratio, applicable to companies with stable earnings PB: Price to Book Ratio, applicable to companies in cyclical industries. PS: Market sales ratio, applicable to unprofitable companies.

Although the price-to-earnings ratio is an important valuation indicator, it also has certain limitations. When making investment decisions, we need to consider other factors comprehensively and assess the company's value and potential.