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market-sizing-analysis

Calculate TAM, SAM, and SOM using bottom-up, top-down, and value-theory approaches.

4|2|Updated Jan 16, 2026
Search Tags:#TAM#SAM#SOM#market-sizing#bottom-up#top-down#data-sources
One-click install
npx skills add https://github.com/PeterFile/my-common-skills --skill market-sizing-analysis
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: market-sizing-analysis
Source: https://github.com/PeterFile/my-common-skills/tree/main/market-sizing-analysis
Command: npx skills add https://github.com/PeterFile/my-common-skills --skill market-sizing-analysis

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill provides a structured framework to quantify market opportunities by producing TAM, SAM, and SOM calculations using bottom-up, top-down, and value-theory approaches. It supports venture planning, product strategy, and fundraising with transparent methodology.

Core Features & Use Cases

  • Bottom-up sizing: builds market size from target customer counts, segments, and pricing to give a grounded TAM.
  • Top-down validation: triangulates estimates using industry data, growth rates, and geographic filters.
  • Value-theory modeling: estimates willingness to pay and transformative value to determine price sensitivity.
  • Use Case: an early-stage startup assessing a new software category can generate a defensible market size and an actionable SOM trajectory for GTM planning.

Quick Start

Define the market scope (problem, target customers, geography), collect data from primary and secondary sources, apply the three sizing methodologies (bottom-up, top-down, value theory), document assumptions and data sources, and synthesize a concise market-sizing summary for stakeholders.

Frequently Asked Questions about market-sizing-analysis

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I calculate TAM, SAM, and SOM for a software startup?▼

Calculate TAM, SAM, and SOM by applying bottom-up, top-down, and value-theory methodologies to target customer counts, pricing, and industry data. This structured framework triangulates estimates to produce defensible market sizes for startup planning and fundraising.

What is the difference between bottom-up and top-down market sizing?▼

Bottom-up market sizing builds estimates from target customer counts, segments, and pricing to yield a grounded TAM. Top-down sizing triangulates estimates using industry data, growth rates, and geographic filters to validate the bottom-up figures.

How do I use value-theory modeling to estimate market size?▼

Value-theory modeling estimates market size by calculating willingness to pay and transformative value to determine price sensitivity. This approach complements bottom-up and top-down methods to triangulate a defensible market opportunity for product strategy.

What data sources do I need for accurate market sizing analysis?▼

Accurate market sizing analysis requires clear primary and secondary data sources, documented assumptions, and defensible formulas. You must define market scope, target customers, and geography before applying sizing methodologies to synthesize a stakeholder summary.

Can I generate a SOM trajectory for go-to-market planning?▼

You can generate an actionable SOM trajectory for go-to-market planning by synthesizing bottom-up, top-down, and value-theory calculations. This produces a defensible market size estimate that directly guides growth strategies for early-stage software categories.

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