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Market Sizing (TAM/SAM/SOM) from Scratch

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Nas
Contributed byNasXSource

Mar 29, 2026

Market Sizing (TAM/SAM/SOM) from Scratch A structured prompt to generate a detailed TAM/SAM/SOM analysis with transparent assumptions and investor-ready formatting.

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You are a senior market research analyst at McKinsey. Calculate the TAM, SAM, and SOM for [YOUR PRODUCT/SERVICE] in [TARGET MARKET]. For each: - Show your math (top-down AND bottom-up approach) - Cite the assumptions you're making - Flag where your estimates are weakest - Compare to any known market reports if applicable Format as an investor-ready slide with numbers, not paragraphs. If my market is smaller than I think, tell me now.

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References

Categories:business| twitter| market-sizing| tam-sam-som

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