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📖 What is "PER" in stock investment? Explanation for beginners

Investing seems difficult, and anyone can understand it if they accumulate the right knowledge little by little.

I am 58 years old and have been investing in securities for 20 years. Today, I will deliver an easy-to-understand explanation even for those who touch investment for the first time.

One of the indicators often used to judge stock prices is the price-to-earnings ratio (PER) 📊

This shows how many times the stock price is valued at profit, and the calculation formula is as follows.

👉 PER = Stock price ÷ Earnings per share (EPS)

Generally, if the PER is too high, it is said that it is "expensive" and if it is too low, it is "cheap," but the standard differs depending on the industry. ⚖️

For example, even if a growth company has a high PER, investors often have high expectations for the future.

Understanding these basic indicators will make your view of stock prices clearer. ✨

Next time, we will also touch on PBR (Price Bonus Ratio), so please follow and wait.

The Stock Investment The Investment Beginner # PER # Stock Indicators Japanese Stocks

2025/8/23 Edited to

... Read more株式投資を始めたばかりの方にとって、PER(株価収益率)という言葉は少し難しく感じるかもしれません。しかし、私の経験から言うと、この指標を理解することは株価の評価を正しく行ううえで非常に役立ちます。 私自身、証券投資歴20年でさまざまな企業の株価を分析してきましたが、PERは業種や企業の成長段階によって見方が変わることを学びました。例えば、ITや新興企業など成長性が高い業界はPERが高くても投資家は将来の利益拡大を見込んでおり、これをネガティブに捉えないことが重要です。 また、PERは単に数字が低いから割安、高いから割高と判断するだけでなく、その企業の業績推移や市場の動向も合わせて検討すべきです。私が株式投資を続ける中で気をつけているのは、EPS(一株当たり利益)の安定性も見ること。EPSが一時的に高くても持続性がないと株価は不安定になりやすいです。 さらに、PERの数値は業界ごとに平均値も異なるため、同じ数字でも別の業種と比較することは避け、同業界内での比較を心掛けています。こうしたポイントを押さえておくと、投資判断の精度がぐっと上がります。 最後に、PER以外にもPBR(株価純資産倍率)やROE(自己資本利益率)など複数の指標を組み合わせて総合的に企業価値を評価することが長期投資で成功するコツだと感じています。投資初心者の方も、最初はPERを中心に学びつつ、段階的に他の指標にも触れてみるとよいでしょう。

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