What is an investment thesis, and why does it matter?
When you start investing in early-stage companies, it’s easy to be pulled in many directions. That is exactly why having an investment thesis matters.
Your own clear view
An investment thesis is your own clear view on what you want to invest in, why it matters, and what you believe will drive long-term value.
It doesn’t need to be over-engineered. But it does need to help you make better decisions. At its simplest, your thesis should help you answer one question:
That might be a sector – climate, health, education, the future of work. It might be a type of founder. It might be a problem you believe is underfunded, misunderstood, or becoming more urgent.
Why it matters
This matters most in angel investing, where companies are early, information is limited, and the range of opportunities can feel overwhelming. A good thesis helps you:
Stay aligned with your values and areas of interest
Filter opportunities more effectively
Avoid purely reactive or emotional decisions
Build conviction beyond the hype
Explain clearly why a deal does, or does not, fit
How to start building yours
Eight moves, in order. Tap each one to open it.
What sectors, themes or problems do you genuinely care about? Where do you have experience, networks or curiosity? Women’s health, climate adaptation, inclusive finance, education, social mobility – any area where you believe innovation and capital can make a difference.
Who is building in this space? What trends are driving change? Where are the gaps? What is broken in the current system? Which solutions are gaining traction, and which are struggling?
Is the founder solving a real and urgent problem? Is the product differentiated? Is there evidence of demand? Does the team understand the customer? Is there a credible route to scale? If impact matters to you, is it embedded in the business model rather than added as a nice-to-have?
What do you believe about this market? Why now? Why this solution? Why this team? What would need to be true for this to become a strong investment?
A thesis is not only about what excites you. It should also make you honest about what could go wrong: market timing, regulation, customer adoption, competition, execution, or funding risk.
Speak to founders, operators, investors, advisors and people with lived experience of the problem. Look for evidence that supports your view, but also pay attention to what challenges it.
Your thesis should evolve as you learn. The point isn’t to lock yourself into a rigid view forever – it’s to build a disciplined way of thinking, so each investment makes your next decision stronger.
It doesn’t need to be a long report. A few clear paragraphs are enough. What matters is that it captures your intention, your reasoning, and your decision-making criteria.
Your exercise for Month 1
Start your thesis
Download the Investment Thesis Template below and start filling it in. You won’t have all the answers yet, and that’s fine.
Focus on sections 1, 2 and 4 for now: your investor identity, your impact focus areas, and your founder lens. You’ll build on this template across the next five months. By Month 6 you’ll have a complete written thesis.
Your thesis doesn’t need to be perfect. But it should be yours.
It’s a practical tool to help you invest with more clarity, more discipline and more purpose – and to avoid being carried away by whatever happens to be loudest in the market.
Take the Month 1 quiz