
The price-to-earnings (P/E) ratio is a measure of a company's share price relative to its earnings per share. It is used by analysts and investors to assess the relative value of a company's stock and to determine if the share price accurately represents the projected earnings per share. A high P/E ratio may indicate that a company's stock is overvalued or that investors expect high growth rates. Conversely, a low P/E ratio could mean that a company is undervalued or that expectations for future growth are low. While a high P/E ratio might be attractive to some investors, others might prefer a low P/E as it suggests the company is more likely to outperform earnings forecasts. In the Australian stock market, the P/E ratio is calculated on the EWA ETF, and it is important to compare it to the average of previous periods to understand the market valuation. As of 1 July 2025, the P/E ratio was 19.48.
| Characteristics | Values |
|---|---|
| Date | 1 July 2025 |
| P/E Ratio | 19.48 |
| 1Y Average | 20.33 |
| 1 Std Dev range | 19.82-20.84 |
| 2 Std Dev range | 19.31-21.35 |
| 5Y Average | 16.96 |
| 1 Std Dev range | 14.79-19.12 |
| 2 Std Dev range | 12.63-21.28 |
| Long-term trend | 15 |
| P/E Ratio interpretation | A P/E between (μ - σ) and (μ + σ) is considered "Fair", over a specific timeframe. A P/E greater than (μ + σ) is defined as "Overvalued", greater than (μ + 2σ) is defined as "Expensive". A P/E less than (μ - σ) is defined as "Undervalued", less than (μ - 2σ) is defined as "Cheap". |
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What You'll Learn

The relationship between a company's stock price and earnings per share
The price-to-earnings (P/E) ratio is a popular metric that gives investors a better sense of the value of a company's stock. It measures a company's share price relative to its earnings per share (EPS). The P/E ratio is the proportion of a company's share price to its EPS, and it is often called the price or earnings multiple.
The P/E ratio is calculated by dividing a company's current stock price by its EPS for the previous 12 months. The EPS is calculated by subtracting a company's net income from its preferred dividends and then dividing that figure by the number of common shares it has outstanding. The P/E ratio is a useful tool for comparing a company's valuation against its historical performance, against other firms within its industry, or against the overall market. It is also used to compare similar companies in the same industry or a single company over time.
A high P/E ratio could indicate that a company's stock is overvalued or that investors expect high growth rates. On the other hand, a low P/E ratio could mean that a company's stock is undervalued or that investors expect low growth rates. Companies with no earnings or that are losing money do not have a P/E ratio because there is no denominator.
The two most commonly used P/E ratios are the forward P/E and the trailing P/E. The forward P/E uses future earnings guidance, while the trailing P/E uses past earnings. The forward P/E is considered more accurate by some investors because it is forward-looking and can account for significant events that affect a company's stock price.
In Australia, the P/E ratio has been used to assess the country's stock market valuation over various time horizons, helping to identify potential overvaluation or undervaluation trends.
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How to determine if a company is overvalued or undervalued
The price-to-earnings (P/E) ratio is a standard part of stock research used by investors to determine if a company is overvalued or undervalued. It is calculated by dividing the market price of one share by the company's earnings per share (EPS). A high P/E ratio could indicate that a company's stock is overvalued or that investors expect high growth rates. On the other hand, a low P/E ratio indicates that a company's share price is low compared to its earnings, suggesting that the stock is undervalued.
In addition to the P/E ratio, there are other ratios that can be used to determine if a company is overvalued or undervalued. Here are some examples:
- P/S Ratio: This is calculated by dividing the current stock price by the 12-month sales per share. A high P/S ratio suggests overvaluation, while a low P/S ratio could indicate undervaluation.
- PEG Ratio: This accounts for a company's growth prospects. Typically, a PEG of 1.0 indicates a fairly-valued stock, while a PEG above 1.0 suggests overvaluation and below 1.0 suggests undervaluation.
- Relative Dividend Yield: This compares a company's dividend yield to the average dividend yield for an index. A low relative dividend yield could suggest that the shares are overvalued.
- D/E Ratio: This measures a company's debt against its assets. A lower ratio could indicate that the company is funded primarily by its shareholders, but it does not necessarily mean the stock is overvalued. It is important to compare the D/E ratio to the industry average to determine if the stock is overvalued.
- ROE (Return on Equity): This measures a company's profitability against its equity and is expressed as a percentage. A low ROE could indicate overvalued shares, as it suggests that the company is not generating significant income relative to shareholder investment.
When evaluating these ratios, it is important to compare them to historical averages and competitor companies to gain a comprehensive understanding of a company's valuation. While these ratios provide insight, it is also crucial to consider other factors such as dividends, projected future earnings, and broader market trends.
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The difference between forward and trailing P/E ratios
The price-to-earnings (P/E) ratio is a commonly used metric for determining the value of a company. It compares a company's share price with its earnings per share (EPS). The two most commonly used P/E ratios are the forward P/E and the trailing P/E.
Trailing P/E
Trailing P/E is a historical price-earnings ratio for a business. It is calculated using a company's performance over the past 12 months. It is considered more reliable than forward P/E because it is based on actual performance rather than expected future performance. Trailing P/E is useful for assessing past performance and comparing it to peers or industry standards. It also helps analysts benchmark periods year-over-year for a more accurate and up-to-date measure of relative value. However, it might not provide an up-to-date picture of a company's valuation or potential, as it does not account for future earnings potential or changes in business conditions.
Forward P/E
Forward P/E is the estimated price-earnings ratio for the future earnings of a business. It is based on the next 12 months of projected earnings. Forward P/E is more relevant for growth companies or industries where future prospects are critical, as it reflects anticipated growth and profitability. It is also useful for comparing current earnings to future earnings and helps provide a clearer picture of what earnings will look like, without changes and other accounting adjustments. However, forward P/E relies on estimates, which can be uncertain and influenced by various factors such as economic changes or analyst predictions. Companies could also underestimate or misstate earnings to beat the consensus estimate P/E in the next quarterly earnings report.
Both forward and trailing P/E ratios offer valuable insights into a company's valuation and can be used together to make better investment decisions. Trailing P/E is useful for assessing past performance, while forward P/E is more relevant for growth companies or industries where future prospects are critical.
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The average P/E ratio in Australia
The price-to-earnings (P/E) ratio is a way to measure how expensive a company's shares are. It compares a company's share price with its earnings per share (EPS). The P/E ratio is calculated by dividing the current price of a stock by its EPS. A high P/E ratio could mean that a company's stock is overvalued or that investors expect high growth rates. Conversely, a low P/E ratio could indicate that a company is undervalued or that investors expect low growth rates.
The P/E ratio is a useful tool for investors to assess the relative value of a company's stock. It can be used to compare a company's valuation against its historical performance, against other firms within its industry, or against the overall market. The two most commonly used P/E ratios are the forward P/E and the trailing P/E. The forward P/E uses future earnings guidance, while the trailing P/E uses past earnings data.
While a high P/E ratio can be attractive to some investors, indicating high expectations for future growth, a low P/E ratio is preferred by others as it suggests that a company is more likely to outperform earnings forecasts. However, defining a "good" or "bad" P/E ratio is challenging, as it depends on various factors such as the broader stock index, the sector in which the company operates, and the company's historical performance.
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How P/E ratios can be used to compare companies
The price-to-earnings (P/E) ratio is a widely used metric that helps investors and analysts assess the relative value of a company's stock. It is calculated by dividing a company's share price by its earnings per share (EPS). The P/E ratio is particularly useful for comparing companies within the same industry or sector and for evaluating a single company's performance over time.
When comparing companies within the same industry, a lower P/E ratio generally indicates that a company's stock may be undervalued relative to its peers. For example, if Company A has a P/E ratio of 20 and Company B has a P/E ratio of 15, it could suggest that Company B's stock is undervalued and may present a more attractive investment opportunity. However, it is important to note that P/E ratios should not be used in isolation and must be considered alongside other metrics.
P/E ratios can also be used to compare a company's current valuation to its historical performance. By examining the changes in a company's P/E ratio over time, investors can gain insights into the company's growth trajectory and identify potential overvaluation or undervaluation trends. For instance, if a company's P/E ratio has been consistently increasing over the years, it could indicate that the market expects higher earnings growth in the future.
The two most commonly used P/E ratios are the forward P/E and the trailing P/E. The forward P/E uses future earnings guidance, providing a forward-looking perspective on a company's earnings potential. On the other hand, the trailing P/E relies on past performance, using the earnings per share from the previous 12 months. The trailing P/E can be limited in its ability to reflect the most up-to-date valuation of a company, as stock prices fluctuate constantly, while earnings are released quarterly.
In summary, P/E ratios are valuable tools for comparing companies within similar industries, assessing historical performance, and evaluating a company's relative valuation. However, it is important to interpret P/E ratios with caution and consider other metrics, such as growth prospects, debt levels, and cash flow, to make more informed investment decisions.
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Frequently asked questions
There is no definitive answer to this question as it depends on a range of factors. A high PE ratio might indicate high expectations for future growth, especially if the company is small or in a rapidly expanding market. On the other hand, a low PE ratio could suggest that a company is more likely to outperform earnings forecasts.
The PE ratio, or price-to-earnings ratio, measures the relationship between a company's stock price and its earnings per share.
The PE ratio is calculated by dividing the current market value of a company's stock by its earnings per share (EPS).
To determine a good PE ratio for a specific sector, it is essential to compare it to the average PE ratio of that sector. For example, a PE ratio of 15 for a house-building company might be considered low if the average PE ratio for the house-building sector is 27.
The PE ratio is a useful tool for investors to assess the relative value of a company's stock. It helps compare a company's valuation against its historical performance, other companies within the same industry, or the overall market. However, it should not be the sole factor in making investment decisions, as other financial and market factors also come into play.











































