Reversion to the Mean - Prompt de Análisis IA
Use this John Bogle rule prompt to apply “Reversión a la Media” to a specific company. It turns a vague opinion into a repeatable checklist: what facts you must verify, which assumptions matter most, what would invalidate the thesis, and the common misreads that create false certainty. Expect a written output you can save: a thesis summary, key risks, and next-step questions for filings and earnings calls. If a claim matters, require primary-source citations before you act. Educational only — not investment advice.
Prompt completo
Eres un analista de inversiones entrenado en el principio de John Bogle: "Reversion to the Mean". Tu tarea es analizar {Nombre de la Empresa} a través de esta perspectiva específica.
## Contexto
John Bogle enseña: "Fund returns tend to revert to the mean. Yesterday's winners become tomorrow's losers, and vice versa."
## Marco de Análisis
### 1. Evaluación de Aplicación del Principio
- ¿Cómo se aplica específicamente este principio a {Nombre de la Empresa}?
- ¿Qué aspectos de la empresa son más relevantes para "Reversion to the Mean"?
- Califica la alineación: Fuerte / Moderada / Débil
- ¿En qué se enfocaría John Bogle primero?
### 2. Evidencia Cuantitativa
- Identifica 3-5 métricas financieras clave relevantes
- Analiza estas métricas durante los últimos 5-10 años
- Compara con competidores y benchmarks históricos
- ¿Los números están mejorando, estables o deteriorándose?
### 3. Análisis Cualitativo
- Evalúa factores no cuantificables que John Bogle examinaría
- Calidad de la gestión y alineación con este principio
- Dinámica de la industria y posición competitiva
- Sostenibilidad del modelo de negocio desde esta perspectiva
### 4. Evaluación de Riesgos
- ¿Qué riesgos destaca este principio para {Nombre de la Empresa}?
- ¿Qué señales de advertencia identificaría John Bogle?
- Prueba de estrés: ¿Cómo se desempeñaría bajo condiciones adversas?
- ¿Cuál es el peor escenario desde esta perspectiva?
### 5. Identificación de Oportunidades
- ¿Qué oportunidades revela este análisis?
- ¿Hay fortalezas ocultas que el mercado podría estar subvalorando?
- ¿Qué catalizadores podrían liberar valor?
### 6. Bogle Verdict
- ¿{Nombre de la Empresa} pasa la prueba de "Reversion to the Mean"?
- Calificación: 1-10
- Recomendación clara: Comprar / Mantener / Evitar
- Resumen en un párrafo
## Formato de Salida
Presenta datos específicos en cada sección. Termina con un veredicto decisivo.Related reading (close the loop)
Pick one path below to turn the output into a checkable, repeatable decision policy.
- Read the matching principleDefinition, boundaries, pitfalls, and a minimal checklist.
- Master profileMethodology summary + common misreads for this framework.
- Practice in scenariosTranslate conclusions into “what I do under stress”.
- More prompts from this masterTriangulate with multiple rules instead of anchoring on one prompt.
Educational only. Verify facts with primary sources and apply your own constraints.
Este contenido solo está disponible en chino e inglés por el momento.
Basic Questions
How does mean reversion theory help identify extreme market valuations?
Core idea: extreme market performance will eventually revert to the mean
✅ Using this AI prompt, you can systematically analyze any company or investment opportunity from this principle's perspective.
The prompt guides you to:
1. Assess whether the investment target meets this principle's core requirements
2. Identify key risks and blind spots
3. Provide a 1-10 comprehensive rating
Start by analyzing companies you know well for practice, then apply the framework to new investment decisions.
✅ Using this AI prompt, you can systematically analyze any company or investment opportunity from this principle's perspective.
The prompt guides you to:
1. Assess whether the investment target meets this principle's core requirements
2. Identify key risks and blind spots
3. Provide a 1-10 comprehensive rating
Start by analyzing companies you know well for practice, then apply the framework to new investment decisions.
Usage Tips
Is the AI's 1-10 rating reliable?
⚠️ The mean reversion score helps identify deviations that "will eventually normalize" but cannot tell you "when."
The rating's unique value:
- Bogle's core insight: Whether stock returns, fund manager performance, or market valuations, all mean-revert over the long term
- A high score means your invested asset is near historical averages — risk is relatively manageable
- A low score (whether deviation is too high or too low) is a warning: the current state is unsustainable
Important understanding:
- Mean reversion isn't a clock — "it will revert eventually" doesn't mean "it will revert soon," as markets can remain irrational for extended periods
- Bogle used mean reversion to argue against performance chasing — past top-performing funds often underperform in the future
- AI can calculate deviation magnitude but cannot predict reversion speed — this is mean reversion's greatest uncertainty
The rating's unique value:
- Bogle's core insight: Whether stock returns, fund manager performance, or market valuations, all mean-revert over the long term
- A high score means your invested asset is near historical averages — risk is relatively manageable
- A low score (whether deviation is too high or too low) is a warning: the current state is unsustainable
Important understanding:
- Mean reversion isn't a clock — "it will revert eventually" doesn't mean "it will revert soon," as markets can remain irrational for extended periods
- Bogle used mean reversion to argue against performance chasing — past top-performing funds often underperform in the future
- AI can calculate deviation magnitude but cannot predict reversion speed — this is mean reversion's greatest uncertainty
Getting started
Does this prompt give investment advice or buy/sell calls?
No. It is a research helper that turns your thinking into checkable inputs and constraints: what evidence you must verify, what would prove the thesis wrong, and what common misreads to avoid. Treat the output as a draft, not a signal. Validate every material number against primary sources (filings, earnings releases, investor presentations, transcripts), and do not act unless you can write down (1) position-size limits and (2) explicit invalidation triggers.
What inputs should I provide for a reliable result?
At minimum: a 1-sentence business model summary, your current thesis (why it wins/loses), time horizon, and risk constraints; a valuation/price range; and the latest financial statements (profit quality, cash flow, debt/liquidity). Add context that reduces hallucinations: the exact filing period, known one-offs, key competitors, and what you do NOT know yet. If an input is missing, label it as missing evidence instead of letting the model guess.
Validation and boundaries
How do I validate the output?
Validate falsifiable claims one by one. Rewrite each key statement into something you can check: the metric, the period, and the source. Numbers must match filings; management claims must be traceable to transcripts/guidance; and “moat” claims need observable evidence (pricing power, retention, switching costs, cost structure). Anything you cannot verify becomes a follow-up task, not a decision trigger. If the model cites dates, confirm they are not beyond its knowledge cutoff.
When should I NOT act on the output?
If you cannot write down invalidation triggers, a position-size cap, or primary-source evidence for the key claims behind “Reversión a la Media”, do not act. The safer move is usually to reduce size, slow down, and schedule the next review.
Más prompts de reglas
Explora otros principios de inversión de este maestro.
Suficiente
No hay cantidad de dinero que sea suficiente para alguien que no sabe qué es suficiente. Define tu suficiente.
→No Mires Constantemente
No mires tu portafolio constantemente. Cuanto más miras, más probable es que cometas un error emocional.
→Regla de Asignación de Bonos
Una regla aproximada: mantén tu edad en bonos. Una persona de 30 años podría tener 30% en bonos, una de 60 años 60% en bonos.
→Asignación de Activos
Tu asignación de activos - la mezcla de acciones, bonos y efectivo - es la decisión de inversión más importante que tomarás.
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