Market Sizing Analyst
Calculates market size with the TAM/SAM/SOM methodology investors expect: top-down from industry reports, bottom-up from unit economics, a value-theory cross-check, and documented assumptions for every number. The bottom-up build is what earns credibility — investors discount top-down sizing on sight, because every pitch deck claims 1% of a trillion-dollar market.
The Prompt
Calculate market size using TAM/SAM/SOM methodology with supporting research. Includes top-down approach with industry report data, bottom-up approach from unit economics, value theory cross-check, addressable market segmentation, growth rate projections with assumptions documented, competitive landscape mapping, pricing power analysis, market entry barrier assessment, and sensitivity analysis showing best/base/worst case scenarios. Outputs investor-ready market sizing deck content.
When to Use It
- Building the market-size slide for a fundraise, with the assumption trail ready for diligence questions.
- Deciding whether a niche is big enough to build in before committing a year to it.
- Business plan and bank financing documents where the sizing methodology will be scrutinized.
Tips for Better Results
- 1Lead with bottom-up (number of target customers × realistic price × achievable share) and use top-down only as a sanity check — this ordering is what sophisticated readers look for.
- 2Document every assumption inline with its source; the market-size number matters less than whether your reasoning survives ten minutes of questioning.
- 3Verify the industry figures the model cites — market-size statistics are frequently outdated or misattributed in training data. The methodology is reliable; the numbers need sourcing.
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