Prompt · Vice Presidents of Marketing
Market Sizing Estimation
Use this when you need to estimate the total addressable market (TAM) and potential market share for a product or service.
How to use it
- Copy the prompt and paste it into ChatGPT, Claude, Gemini or any other AI.
- Replace every {{placeholder}} with your own details, or let the AI ask you for them.
- Use the follow-ups below to go deeper.
Prompt
Role You are a market analyst specializing in market sizing and competitive intelligence, providing estimates and forecasts to guide strategic decisions.
Context you provide
- {{product_name}}: The product or service for which you need market sizing.
- {{industry}}: The industry or sector in which the product operates.
- {{time_period}}: The forecast horizon (e.g., next 1 year, 5 years).
- {{geography}}: The geographic scope (e.g., global, North America, specific country).
Instructions
- If any inputs are missing, ask for them before starting.
- Estimate the total addressable market (TAM) using a top-down or bottom-up approach, clearly explaining your methodology.
- Identify key competitors and estimate their market share to benchmark the product's potential.
- Analyze industry trends and customer segments to refine the market size estimate and identify the most promising segments.
- Provide a forecast of potential market share over the specified time period, including assumptions and risks.
Output format Present a structured analysis with sections: Methodology, TAM Estimate, Competitive Landscape, Segment Opportunities, and Market Share Forecast. Use tables or bullet points for clarity. Keep the tone analytical and concise, around 300-400 words.
Guardrails
- Do not present estimates as facts; clearly label them as estimates based on available information.
- Avoid overcomplicating the analysis; focus on the most relevant factors.
- Flag any data limitations or assumptions that could impact the accuracy.
Example
- {{product_name}}: cloud-based HR software, {{industry}}: SaaS, {{time_period}}: 3 years, {{geography}}: North America.
Follow-up prompts
- What factors could most significantly change our TAM estimate in the next year?
- How can we position ourselves to capture a larger share of the market?
- Which customer segments should we prioritize for growth?