Explanation of P/E Ratio
Explanation of P/E Ratio
The Price-to-Earnings Ratio, or P/E Ratio, is a commonly used valuation reference indicator. It generally reflects the relationship between a company’s share price and its earnings. The displayed P/E Ratio may vary depending on the market, data provider, calculation methodology and data update time. The P/E Ratio is only one reference indicator and investors should not rely on it alone when making investment decisions.
1. Price-to-Earnings Ratio (Static)
Formula:
「HK shares」Static P/E = Total market capitalization at the day's close / Profit attributable to shareholders for the previous fiscal year
「US shares」Static P/E = Latest share price / Diluted earnings per share (EPS) disclosed in the previous annual report
「China A shares」Static P/E = Total market capitalization at the day's close / Net profit attributable to the parent company for the previous fiscal year
Explanation:
Static P/E is a valuation metric calculated based on a company's audited financial data from the previous year; it reflects the enterprise's actual profitability over the past full fiscal year. When a company has reached maturity, its earnings growth has stabilized, or the industry is undergoing a major shakeout, Static P/E generally offers a reliable way to assess whether the current share price is inflated relative to established earning power. By comparing Static P/E with Dynamic P/E, one can quickly and intuitively determine whether a rise in the share price is underpinned by actual past performance (indicated by a low Static P/E) or driven by future market expectations (indicated by Static > Dynamic).
2. Price-to-Earnings Ratio (TTM)
Formula:
「HK shares」 P/E (TTM) = Total market capitalization at day-end close / Profit attributable to shareholders over the past 12 months
「US shares」 P/E (TTM) = Latest share price / Diluted earnings per share (EPS) reported over the past 12 months
「China A shares」 P/E (TTM) = Total market capitalization at day-end close / Cumulative net profit attributable to the parent company over the past 12 months
Explanation:
Trailing P/E is a valuation metric calculated based on a company's rolling financial data from the past four consecutive quarters (the last 12 months); it reflects the enterprise's most recent and ongoing earnings performance. Unlike the lagging static P/E or the forecast-dependent forward P/E, the trailing P/E employs a "dynamic sliding window" approach—dropping data from the same period of the previous year and adding data from the latest quarter whenever a new quarterly report is released—thereby achieving an optimal balance between actual historical data and timeliness. When a company is undergoing a business transformation, or an industry faces sudden policy shifts or drastic macroeconomic volatility, the trailing P/E can capture the company's current performance inflection points more sensitively and objectively. Comparing the trailing P/E with the forward P/E generally allows for a quick, intuitive assessment of whether market expectations are overly aggressive: if the trailing P/E remains high while the forward P/E drops sharply, it indicates that the market is pricing in future expectations that have not yet materialized.
3. Price-to-Earnings Ratio (Dynamic)
Formula:
「HK shares」Dynamic P/E = Total market capitalization at day's close / Forecasted annual profit attributable to shareholders for the next 12 months
「US shares」Dynamic P/E = Latest price / Forecasted diluted earnings per share (EPS) for the next 12 months
「China A shares」Dynamic P/E = Total market capitalization at day's close / Forecasted annual net profit attributable to the parent company for the next 12 months
Explanation:
Dynamic P/E is a valuation metric calculated based on a company's projected future earnings; it reflects market expectations regarding the company's future profitability. When a company is experiencing rapid earnings growth or is at a cyclical turning point, Dynamic P/E generally provides a more accurate assessment of whether the current stock price is within a reasonable valuation range . By comparing Dynamic P/E with Static P/E, one can quickly and intuitively determine whether a company is in a period of earnings growth (Dynamic < Static) or decline.
Important Notes and Disclaimer
The content on this page is provided for general information and for reference only. It is intended to help clients understand the general meaning and common calculation methods of P/E-related indicators. It does not constitute and should not be regarded as investment advice, investment recommendation, solicitation, offer or invitation to buy or sell any securities.
P/E Ratios and related financial data may be provided by third-party data vendors, listed company announcements, financial statements or other public information sources. They may be affected by data update time, exchange rates, accounting standards, corporate actions, one-off gains or losses, earnings forecast assumptions and data vendor calculation methodologies. P/E Ratios displayed on different platforms or by different information sources may vary.
Where a company has zero or negative earnings, or where relevant financial information is insufficient, the P/E Ratio may not be applicable, may not be comparable, or may be displayed as blank/N/A. A higher or lower P/E Ratio does not necessarily mean that the relevant security is overvalued, undervalued or has investment value.
Investment involves risks. Securities prices may rise or fall, and past performance is not indicative of future performance. Investors should not make investment decisions based solely on the P/E Ratio or any single financial indicator. Investors should consider, among other things, the company’s fundamentals, financial position, business outlook, market risks, and their own investment objectives, financial situation and risk tolerance. Independent professional advice should be sought where necessary.
