PE (Price-to-Earnings Ratio), PB (Price-to-Book Ratio), PS (Price-to-Sales Ratio): Fundamental Valuation Skills for Value Investing

Today we’ll discuss a core stock-investing skill: valuation. Many investors focus solely on a stock’s price level—or perhaps only on its P/E ratio. Today, we’ll comprehensively explain the three major valuation metrics—P/E, P/B, and P/S—so you can integrate and apply them flexibly going forward. First, the P/E (Price-to-Earnings) Ratio. Formula: Stock Price ÷ Earnings Per Share (EPS), or equivalently, Market Capitalization ÷ Net Profit. In plain terms: At the current earnings level, how many years would it take to recoup your investment? In theory, the lower the P/E, the cheaper the stock’s valuation. P/E is best suited for evaluating companies with stable earnings—such as utilities and consumer staples—whose performance exhibits relatively low volatility. When using P/E, be mindful of its variants: static P/E, forward P/E, and TTM (Trailing Twelve Months) P/E. Always clarify which version you’re looking at—never mix them up. Second, the P/B (Price-to-Book) Ratio. Formula: Stock Price ÷ Book Value Per Share, or equivalently, Market Capitalization ÷ Total Book Value of Equity. In essence: How many times the book value are you paying to acquire the company’s net assets? P/B is especially appropriate for capital-intensive industries or sectors with highly volatile earnings—such as banks, insurance companies, securities firms, and cyclical sectors like steel and non-ferrous metals. In these industries, profits swing dramatically; relying solely on P/E can easily mislead you. By contrast, book value remains comparatively stable, making P/B a more reliable gauge. Speaking of cyclical stocks, here’s a counterintuitive but critical point to remember: You often *buy* cyclical stocks when their P/E is *high*, and *sell* when it’s *low*. During industry troughs, corporate earnings collapse—causing P/E ratios to soar artificially. Conversely, at peak industry prosperity, profits surge dramatically, pushing P/E down—but that’s precisely when risk is highest. Therefore, analyzing cyclical stocks demands more than just looking at the P/E number; you must assess it within the broader context of the industry’s cyclical position. Third, the P/S (Price-to-Sales) Ratio.

How should one interpret the P/E ratio?

Hello everyone! Today we’ll explore what the Price-to-Earnings (P/E) ratio is—and how it’s calculated. The P/E ratio—also known simply as PE—reflects how much investors are willing to pay for each yuan of a company’s net profit. It is calculated as: Stock Price ÷ Earnings Per Share (EPS), or equivalently, Current Market Capitalization ÷ Last Year’s Total Net Profit. The P/E ratio helps assess whether a stock is overvalued or undervalued. Generally speaking, a P/E ratio around 6 suggests the stock may be undervalued, implying greater potential upside. However, never assume a low P/E automatically signals a good investment—always analyze it holistically, considering the company’s net profit trend, industry characteristics, and broader market context. There are three main types of P/E ratios: forward P/E, static P/E, and trailing twelve months (TTM) P/E. 1. Forward P/E = Market Capitalization ÷ Forecasted Full-Year Net Profit. For example: If Q1 net profit is ¥10 million and full-year net profit is forecast at ¥40 million, and market cap is ¥10 billion, then forward P/E = 10 ÷ 0.04 = 250x. 2. Static P/E = Market Capitalization ÷ Prior Year’s Net Profit. For example: If market cap is ¥10 billion and last year’s net profit was –¥20 million, then static P/E = 10 ÷ (–0.02) = –500x. 3. Trailing Twelve Months (TTM) P/E: The purpose of TTM is to eliminate seasonal fluctuations in financial reporting, thereby enabling more rigorous and logically sound analysis. TTM literally means “rolling 12 months”—i.e., the most recent consecutive 12-month period. TTM P/E = Latest Stock Price ÷ Sum of EPS from the Most Recent Four Quarters. For example: If a stock’s latest price is ¥15 and its EPS across the past four quarters totals ¥1.2, then TTM P/E = 15 ÷ 1.2 = 12.5x.

Oil-Dri Stock Trades at 21.1 Price-Earnings Ratio

Oct 15, 2026

Oil-Dri Corporation of America shares trade at a 21.1 P/E ratio with a $1.1 billion market cap. Fiscal 2026 sales rose 2% to $493.84 million, while net income increased 6%.

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