Pitch Components

Market

Show the size of the opportunity and the wedge you can realistically win first.

Last updated

What & why

What it is
In a spoken pitch, the market section communicates the size of the opportunity without drowning the listener in market-sizing jargon. Investors still care about TAM, SAM, and SOM, but live delivery works best when you highlight one or two numbers that show scale and then explain the slice you can realistically win. Bottom-up reasoning is usually more credible than quoting a giant industry number with no path to capture. The important thing is to connect market size to your actual go-to-market plan.
Why it works

A single giant number tends to trigger disbelief because it feels unearned and easy to inflate. Leading with one or two figures keeps cognitive load low, and bottom-up reasoning lets the listener follow each step and arrive at the total themselves, which feels far more trustworthy than a headline they have to accept blind. Naming the specific slice you can win first counters the unspoken objection (how would you ever capture this?) before it forms. Connecting size to your go-to-market plan turns an abstract opportunity into a believable path.

Before & after

Before

“The global software market is $600 billion, so even capturing 1% would make us a $6 billion company.”

After

“There are 28,000 mid-market SaaS companies in the US spending an average of $180K/year on developer tooling. That's a $5B SAM. We're targeting the 4,000 that use our CI/CD stack, a $720M SOM we can reach with our current sales motion.”

When you’ll use it

Presenting the market opportunity slide in an investor pitch deck

Answering 'How big can this get?' from a seed investor

Writing the market section of an accelerator application

Justifying your valuation based on addressable market

Explaining market expansion potential in a Series A pitch

Pro tip

Use the smallest number that still proves this can be big. In speech, believable scale beats bloated scale.

Questions & answers

What's the difference between TAM, SAM, and SOM?

TAM is the total revenue opportunity if you captured 100% of the target market. SAM is the portion you can realistically reach with your current distribution and product. SOM is the share of SAM you can actually capture in the next 3-5 years given your team, sales capacity, and competition.

Should I use top-down or bottom-up market sizing?

Bottom-up is always more credible. Start with the number of potential customers you can identify, multiply by your price, and build up from there. Top-down numbers like 'the global market is $X billion' don't tell investors what you can actually capture.

Learn more

SeedBlink - How to Present TAM, SAM & SOM to Investors
GoingVC - How Investors Use TAM, SAM, SOM to Evaluate Startups

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