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P/E Ratio: Definition, Interpretation, and Examples

The price-to-earnings (P/E) ratio is a fundamental valuation metric used to determine whether a stock is overvalued or undervalued. It represents the amount an investor is willing to pay for each dollar of a company's earnings. A high P/E ratio could suggest that a stock is overvalued or that investors are expecting high growth in the future. Conversely, a low P/E ratio might indicate undervaluation or slower growth expectations. Comparing a company's P/E ratio to its peers or its historical P/E can provide valuable insights. For example, this page references three high-profile stocks to provide examples of P/E ratio interpretation.

빠른 답변 This page provides a guide to understanding the price-to-earnings (P/E) ratio, a key valuation metric used to assess if a stock is overvalued or undervalued. The P/E ratio is calculated by dividing a company's stock price by its earnings per share (EPS), indicating how much investors pay for each dollar of earnings.
Examples3Screens60Average score77.00Updated2026-04-10Prices as ofOct 26, 2026 session

수치는 Financial Modeling Prep(FMP)에서 가져옵니다. FMP에 특정 종목의 수치가 없으면 주가나 펀더멘털 지표는 Yahoo Finance 대체 데이터에서, 주가는 Alpaca 대체 데이터에서 가져올 수 있습니다. SEC EDGAR는 공시 링크와 회사 식별 정보(정식 회사명, 주소)에만 사용하며 수치에는 사용하지 않습니다.

MoonshotScore V2는 미국 상장 적격 기업을 같은 업종의 기업과 비교해 다섯 가지 축으로 0~100점을 매깁니다: 사업의 질(가중치 26), 재무 안전성(가중치 20), 밸류에이션(가중치 18), 성장 지속성(가중치 16), 모멘텀(가중치 12). 뉴스 심리나 애널리스트 데이터는 사용하지 않으며, 미래 수익률의 확률이 아닙니다.

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Understanding the Price-to-Earnings (P/E) Ratio

The price-to-earnings (P/E) ratio is a key valuation metric that compares a company's stock price to its earnings per share (EPS). It provides investors with insight into how much the market is willing to pay for each dollar of reported earnings. This guide offers an overview of the P/E ratio, its calculation, interpretation, and limitations.

Worked Example: These Figures Today

The companies used as examples above, with the current figures behind them. Illustrations of the metric — not a ranking, not a shortlist, and not a recommendation.

Example companies for this topic, listed in the order the guide introduces them — prices, day change and market cap as of the Oct 26, 2026 trading session (FMP quote); P/E and MoonshotScore from our latest stored data. Source: Financial Modeling Prep, Yahoo Finance.
Ticker Company Price Change Market Cap MoonshotScore
AAPL Apple Inc. $343.91 -1.10% $5.0T 89
MSFT Microsoft Corporation $532.60 +1.54% $4.0T 85
TSLA Tesla, Inc. $391.62 +5.21% $1.5T 57

P/E Ratio in Context: Examples

Here are some well-known companies and their P/E ratios, for illustrative purposes: * **AAPL:** Apple Inc. * **MSFT:** Microsoft Corporation * **TSLA:** Tesla, Inc.
“MoonshotScore V2는 NASDAQ, NYSE, AMEX에 상장된 적격 보통주와 ADR을 업종 내 상대 평가를 위한 다섯 가지 축으로 평가해 0~100점을 부여합니다. ETF, OTC 종목, 미국 외 거래소 상장 종목은 대상이 아닙니다. V2 점수가 없어도 기존 V1으로 대체하지 않습니다. 투자 조사 지표이며 매매 권고가 아닙니다.”
— Stock Expert AI published methodology (how MoonshotScore works)

Questions worth resolving before acting on the screen

What does a high P/E ratio indicate?

A high P/E ratio may suggest that a stock is overvalued, or that investors anticipate higher earnings growth in the future. It's important to compare the P/E ratio to those of competitors and industry benchmarks.

What does a low P/E ratio indicate?

A low P/E ratio can suggest that a stock is undervalued, or that the market has low expectations for future earnings growth. However, it could also reflect underlying problems with the company.

What are the limitations of using the P/E ratio?

The P/E ratio does not provide a complete picture of a company's financial health. It should be used in conjunction with other financial metrics and qualitative factors. Also, negative earnings result in an undefined P/E ratio, making comparisons impossible.

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Stock Expert AI provides data and analysis tools for educational purposes. This is not financial advice. Past performance does not guarantee future results. Always consult a qualified financial advisor before making investment decisions. 수치는 Financial Modeling Prep(FMP)에서 가져옵니다. FMP에 특정 종목의 수치가 없으면 주가나 펀더멘털 지표는 Yahoo Finance 대체 데이터에서, 주가는 Alpaca 대체 데이터에서 가져올 수 있습니다. SEC EDGAR는 공시 링크와 회사 식별 정보(정식 회사명, 주소)에만 사용하며 수치에는 사용하지 않습니다.