Overview
This prompt guides entrepreneurs in accurately estimating market sizes using a bottom-up approach, enhancing their investment appeal. Startups seeking funding will benefit from precise market analysis tailored to their specific product and target audience.
Prompt Overview
Purpose: This analysis aims to provide a detailed market sizing for a subscription box for gluten-free dog treats in the United States.
Audience: Target customers are dog owners who prioritize premium pet food and are likely to subscribe to specialty products.
Distinctive Feature: The bottom-up approach uses specific variables to create a realistic market estimate rather than relying on generic statistics.
Outcome: The analysis will yield the Total Addressable Market (TAM), Serviceable Available Market (SAM), and Serviceable Obtainable Market (SOM) for informed investment decisions.
Quick Specs
- Media: Text
- Use case: Analysis, Data Analysis & Insights, Planning & Strategy
- Industry: Data & Analysis, Financial Planning & Advisory, Market Research & Analytics
- Techniques: Decomposition, Role/Persona Prompting, Structured Output
- Models: Claude 3.5 Sonnet, Gemini 2.0 Flash, GPT-4o, Llama 3.1 70B
- Estimated time: 15-30 minutes
- Skill level: Advanced
Variables to Fill
- [INPUT: Region, e.g., "United States"] – Input: Region, E.g., "united States"
- [INPUT: Price, e.g., "$30/month subscription"] – Input: Price, E.g., "$30/month Subscription"
- [Target Customers] – Target Customers
- [Geography] – Geography
Example Variables Block
- [Target Customers]: Dog owners who buy premium pet food
- [Geography]: North America
The Prompt
# Role
Act as a Market Research Analyst and Venture Capital Associate. You specialize in “Bottom-Up” market sizing, which investors prefer over vague “Top-Down” estimates. You rely on Fermi estimation logic to build credible numbers from basic assumptions.
# Task
Estimate the Total Addressable Market (TAM), Serviceable Available Market (SAM), and Serviceable Obtainable Market (SOM) for my startup. Do NOT just search for a generic “Global Market Size” number. Instead, calculate it using specific variables (number of users ? price).
# Context
My Product: [INPUT: Product, e.g., “A subscription box for gluten-free dog treats”]
Target Geography: [INPUT: Region, e.g., “United States”]
Target Customer: [INPUT: Customer, e.g., “Dog owners who buy premium pet food”]
Pricing Model: [INPUT: Price, e.g., “$30/month subscription”]
# Output Instructions
1. Definitions: Briefly define TAM, SAM, and SOM in the context of this specific business.
2. The Logic Chain (Bottom-Up Math):
Step 1: Estimate total number of [Target Customers] in [Geography]. (Show your logic/sources).
Step 2: Filter for those likely to have the specific problem (SAM).
Step 3: Estimate a realistic Year 1-3 capture rate (SOM).
3. The Calculation Table:
TAM ($): (Total Potential Customers ? Annual Price)
SAM ($): (Segmented Customers ? Annual Price)
SOM ($): (Capture Rate ? SAM)
4. Sanity Check: Compare this bottom-up number to a known top-down industry statistic (I will search for this if needed) to see if it’s realistic.
# Formatting
Use a table for the final numbers. Show all math formulas explicitly (e.g., 50M users ? $30 ? 12 months = $18B).
Screenshot Examples
How to Use This Prompt
- [TAM]: Total potential market size estimate.
- [SAM]: Market segment likely to purchase.
- [SOM]: Expected market share capture rate.
- [Target Customers]: Specific demographic for the product.
- [Geography]: Region where the product is sold.
- [Pricing Model]: Subscription price for the product.
- [Capture Rate]: Percentage of SAM expected to convert.
- [Annual Price]: Total revenue from a customer yearly.
Tips for Best Results
- TAM Definition: Total Addressable Market represents the total revenue opportunity available if your product were to achieve 100% market share.
- SAM Definition: Serviceable Available Market is the segment of the TAM targeted by your products and services that is within your reach.
- SOM Definition: Serviceable Obtainable Market is the portion of the SAM that you can realistically capture in the near term.
- Bottom-Up Estimation Logic: Start with the total number of target customers, filter for those with the specific need, and apply a realistic capture rate to estimate your market potential.
FAQ
- What does TAM represent in market sizing?
TAM, or Total Addressable Market, is the total revenue opportunity for a product or service. - How is SAM defined for my startup?
SAM, or Serviceable Available Market, is the segment of TAM targeted by your products or services. - What is the meaning of SOM in market analysis?
SOM, or Serviceable Obtainable Market, is the portion of SAM you can realistically capture. - Why use bottom-up market sizing?
Bottom-up sizing provides more accurate estimates based on specific customer data and realistic assumptions.
Compliance and Best Practices
- Best Practice: Review AI output for accuracy and relevance before use.
- Privacy: Avoid sharing personal, financial, or confidential data in prompts.
- Platform Policy: Your use of AI tools must comply with their terms and your local laws.
Revision History
- Version 1.0 (December 2025): Initial release.
