{ "schema_version": "core-reviewed-term-ai-handoff-v1", "version": "core-reviewed-term-ai-handoff-v1", "contract_status": "preview", "distribution": "per_term_read_only_ai_handoff", "no_write_operations": true, "canonical": { "url": "https://core.yogoq.com/en-US/core/price-earnings-ratio", "slug": "price-earnings-ratio", "locale": "en-US" }, "summary": { "schema_version": "core-reviewed-term-summary-v1", "term_id": "968aa374-f5a6-509d-a439-94157762cbf2", "canonical_slug": "price-earnings-ratio", "canonical_url": "https://core.yogoq.com/en-US/core/price-earnings-ratio", "locale": "en-US", "display_name": "Price-to-Earnings Ratio (P/E)", "english_name": null, "abbreviation": "P/E", "short_definition": "The P/E ratio shows how much investors pay per unit of earnings.", "quality": "reviewed", "publication_status": "published_reviewed", "version": "core-reviewed-term-summary-v1", "last_reviewed_at": "2026-05-14T00:00:00.000Z", "sources_count": 3, "limitations_key": "core-trust-policy-v1-2026-06-22" }, "content": { "definition": { "key": "definition", "title": "一言でいうと", "text": "The P/E ratio shows how much investors pay per unit of earnings.", "items": [] }, "formula": { "key": "formula", "title": "計算の考え方", "text": "Price-to-Earnings Ratio (P/E) should be calculated with a stable numerator, denominator, and time window. Formula | P/E Ratio = Market Price per Share / Earnings per Share | Use it to compare market valuation against reported earnings. Time window | Use the same period for every comparison | Prevents artificial movement Segment | Calculate by plan, market, cohort, or owner when useful | Reveals where the change came from", "items": [ "Formula | P/E Ratio = Market Price per Share / Earnings per Share | Use it to compare market valuation against reported earnings.", "Time window | Use the same period for every comparison | Prevents artificial movement", "Segment | Calculate by plan, market, cohort, or owner when useful | Reveals where the change came from" ] }, "boundary": { "key": "boundary", "title": "含めるもの / 含めないもの", "text": "The boundary of Price-to-Earnings Ratio (P/E) must be written before it is used as a KPI. Include | Recurring and comparable inputs that match the definition | Keeps trend analysis reliable Exclude | One-off, unmatched, or non-comparable items | Avoids inflated or misleading movement Document | Data source, owner, refresh timing, and exception rules | Makes reviews reproducible", "items": [ "Include | Recurring and comparable inputs that match the definition | Keeps trend analysis reliable", "Exclude | One-off, unmatched, or non-comparable items | Avoids inflated or misleading movement", "Document | Data source, owner, refresh timing, and exception rules | Makes reviews reproducible" ] }, "usage": [ { "key": "meaning", "title": "意味", "text": "The Price-to-Earnings (P/E) ratio is share price divided by earnings per share, reflecting market expectations about growth and profitability.Because it embeds market expectations, P/E must be evaluated with growth and risk assumptions.", "items": [] }, { "key": "usage", "title": "役立つ場面", "text": "It links market expectations to earnings, improving valuation decisions. Trend tracking shows how expectations shift over time. Peer comparison helps form over/undervaluation hypotheses.", "items": [ "It links market expectations to earnings, improving valuation decisions.", "Trend tracking shows how expectations shift over time.", "Peer comparison helps form over/undervaluation hypotheses." ] }, { "key": "usage", "title": "使い方のポイント", "text": null, "items": [ "Confirm the EPS definition and time period used.", "Adjust for one-time earnings effects to read sustainability.", "Interpret alongside growth and margin indicators.", "Account for capital structure and accounting differences.", "Make valuation assumptions explicit before decisions." ] }, { "key": "drivers", "title": "何が数字を動かすか", "text": "Price-to-Earnings Ratio (P/E) changes because the underlying operating drivers change. Volume | More or fewer units, users, customers, or transactions | Explains scale effects Mix | Change in segment, plan, product, or channel composition | Explains quality of growth or decline Efficiency | Better conversion, retention, cost control, or process discipline | Explains operating improvement", "items": [ "Volume | More or fewer units, users, customers, or transactions | Explains scale effects", "Mix | Change in segment, plan, product, or channel composition | Explains quality of growth or decline", "Efficiency | Better conversion, retention, cost control, or process discipline | Explains operating improvement" ] } ], "misunderstandings": [ { "key": "misunderstandings", "title": "判断するときの注意点", "text": "Do not read Price-to-Earnings Ratio (P/E) alone. Compare with companion metrics before changing budget or targets. Check whether the movement came from real performance or definition drift. Avoid optimizing the metric in a way that harms customer quality or long-term value.", "items": [ "Compare with companion metrics before changing budget or targets.", "Check whether the movement came from real performance or definition drift.", "Avoid optimizing the metric in a way that harms customer quality or long-term value." ] }, { "key": "misunderstandings", "title": "よくある誤解 / 落とし穴", "text": null, "items": [ "A low P/E is not always a bargain without quality checks.", "Growth assumptions can make P/E misleading if wrong.", "It should not be used as the only decision metric." ] } ], "examples": [ { "key": "examples", "title": "最小例", "text": "Example: Compare a company's P/E to peers to assess whether growth expectations are high or low.Compute P/E using adjusted EPS and show growth and risk assumptions alongside it.Avoid simplistic comparisons across very different industries.Use multi-year averages if earnings are volatile.", "items": [] } ], "comparisons": [ { "key": "comparisons", "title": "似ている言葉との違い", "text": "Compare Price-to-Earnings Ratio (P/E) with adjacent concepts before deciding. Price-to-Earnings Ratio (P/E) | Current concept | Use when the team needs the primary decision lens Adjacent metric or framework | Supporting lens | Use when the team needs evidence or process detail General vocabulary | Broad explanation | Use only for orientation, not final decision-making", "items": [ "Price-to-Earnings Ratio (P/E) | Current concept | Use when the team needs the primary decision lens", "Adjacent metric or framework | Supporting lens | Use when the team needs evidence or process detail", "General vocabulary | Broad explanation | Use only for orientation, not final decision-making" ] }, { "key": "related_metrics", "title": "一緒に見る指標", "text": "Read Price-to-Earnings Ratio (P/E) together with metrics that explain quality, scale, and risk. Growth metric | Shows direction | Explains whether the trend is improving Efficiency metric | Shows cost or effort | Explains whether the result is economical Risk metric | Shows volatility or concentration | Explains whether the result is durable", "items": [ "Growth metric | Shows direction | Explains whether the trend is improving", "Efficiency metric | Shows cost or effort | Explains whether the result is economical", "Risk metric | Shows volatility or concentration | Explains whether the result is durable" ] } ], "faq": [ { "question": "When should I use Price-to-Earnings Ratio (P/E)?", "answer": "Use it when the team needs to decide scope, priority, owner, or trade-off, not when it only needs a short definition." }, { "question": "What makes Price-to-Earnings Ratio (P/E) useful in practice?", "answer": "It becomes useful when it is tied to evidence, a decision owner, and a concrete next operating choice." }, { "question": "What should I avoid?", "answer": "Avoid using the term as a label without clarifying assumptions, boundaries, and how success will be judged." } ] }, "sources": { "source_refs": [ "concept:price-earnings-ratio:en-US", "concept:price-earnings-ratio:ja-JP", "core-term-page-500:concept:price-earnings-ratio" ], "visible_sources": [ { "label": "Principles of Finance (OpenStax)", "url": "https://openstax.org/details/books/principles-of-finance", "kind": null }, { "label": "Principles of Marketing (Open Textbook Library)", "url": "https://open.umn.edu/opentextbooks/textbooks/principles-of-marketing", "kind": "tier_s" }, { "label": "Principles of Management (OpenStax)", "url": "https://openstax.org/details/books/principles-management", "kind": "tier_s" } ] }, "related_terms": [ { "topic_id": "fe904411-397e-563e-a1a6-2ec52501b7a3", "canonical_slug": "product", "canonical_url": "https://core.yogoq.com/en-US/core/product", "title": "Product (Marketing Mix)", "relation_type": "next" }, { "topic_id": "57fdc421-19e8-5771-88c9-035b18c522d5", "canonical_slug": "average-revenue-per-user", "canonical_url": "https://core.yogoq.com/en-US/core/average-revenue-per-user", "title": "Average Revenue per User (ARPU)", "relation_type": "used_together" }, { "topic_id": "2e14b64e-c011-531d-8fd0-347279ff900b", "canonical_slug": "current-ratio", "canonical_url": "https://core.yogoq.com/en-US/core/current-ratio", "title": "Current Ratio", "relation_type": "used_together" }, { "topic_id": "62a974cd-8ea4-5f76-9000-88e4db41a574", "canonical_slug": "price", "canonical_url": "https://core.yogoq.com/en-US/core/price", "title": "Price (Marketing Mix)", "relation_type": "related" } ], "quality": { "quality": "reviewed", "publication_status": "published_reviewed", "source_count": 3, "last_reviewed_at": "2026-05-14T00:00:00.000Z", "trust_policy_version": "core-trust-policy-v1-2026-06-22" }, "limitations": { "policy_version": "core-trust-policy-v1-2026-06-22", "professional_advice_boundary": "reference_only_not_professional_advice", "text": "This page is reference information for research and learning. For accounting, legal, finance, health, security, or other individual decisions, confirm against primary sources or qualified professionals.", "items": [ "Public pages support general understanding and practical context; they are not professional advice for individual cases.", "Fast-changing information such as regulations, accounting standards, prices, product specs, and legal requirements should be checked against primary sources before final decisions.", "Even when AI-assisted drafting or audit is used, publication relies on quality gates and human-readable evidence." ] } }