Recently, while looking at stocks, I found that many people are discussing book value per share, but quite a few misunderstand it. I’ve organized a set of ideas myself, and I’ll share them with everyone today.

First, it’s important to understand a concept: book value per share (BVPS) is actually the amount of a company's equity net worth allocated evenly to each share. Simply put, it’s the company's total assets minus total liabilities, divided by the number of outstanding shares, which gives the book value represented by each share. For example, if a company's shareholders' equity is 1.5 billion yuan and there are 1 billion shares outstanding, then the book value per share is 1.5 yuan.

The calculation formula is this: Book value per share = (Total Assets - Total Liabilities) ÷ Total Outstanding Shares, or directly using shareholders' equity divided by the number of shares outstanding. This number reflects how much actual asset backing the shareholders have after deducting all liabilities.

But here’s a trap to watch out for: many people think that a higher book value per share is always better, or that the stock price will inevitably rise to match the book value. That’s not true. Book value per share is just the accounting value; the stock price also depends on the market’s expectations for the company's future growth. When the stock price is above the book value, the market is willing to pay a premium for future growth; when it’s below, it doesn’t necessarily mean it’s cheap—one must also consider whether the company’s profits are declining or if the industry is in decline.

I think this indicator is most useful in three ways. First, it can be used to assess a company's financial stability, especially valuable for asset-heavy industries. Second, when combined with the Price-to-Book ratio (PBR), it helps you judge whether the valuation is overestimated or underestimated. Third, during liquidation, the net value can serve as a reference for distributing shareholders' equity.

However, regarding the practical application of book value per share and equity net worth, I find that their importance varies greatly across industries. For capital-intensive industries like finance, shipping, and steel, changes in net worth can truly reflect operational conditions, so it’s very worth paying attention to. But for tech companies, software firms, whose value mainly comes from intangible assets like technology, branding, and R&D capabilities, just looking at net worth can be misleading. For example, NVIDIA, Microsoft, and Netflix don’t have particularly high book values per share, but they are still good companies.

So, my current approach is to look at book value per share together with PBR, EPS, ROE, gross profit margin, and other indicators, and combine this with industry characteristics for a comprehensive judgment. You shouldn’t rely on a single indicator to make a conclusion, or you might miss many opportunities. For example, I’ve seen stocks with PBR below 1 that seem very cheap, but upon checking, I found that their profits are declining, so they’re not worth buying.

If you want to check the book value per share of a certain stock, you can directly look it up on websites like Guba, HiStock, or Financial Report Dog, or calculate it yourself from the company's annual financial reports. Simply dividing shareholders' equity by the number of shares outstanding is enough; it’s not complicated.

In summary, book value per share is the starting point for understanding stock value, but it’s definitely not the end. True stock selection still depends on factors like the company's profitability, industry prospects, and competitive advantages. Combining shareholders' equity with other fundamental indicators can bring you closer to the company's true investment value.