Market Size Slide Examples (TAM SAM SOM)

How Airbnb, LinkedIn, Tesla and Oscar sized their market on the deck. Top-down vs bottom-up examples and what investors actually read.

Market Size Slide — TAM, SAM, SOM Examples

The market slide is the most abused slide in venture. Investors know the numbers are directional — what they really want is proof the founder understands the market's shape, not its ceiling.

What the strongest market size slides do

Prefer bottom-up math over consultant reports.
Show one honest number, not a $XXB inflated TAM.
Frame the market as a wedge you can own, not a category you can't.
If the market doesn't exist yet, show the adjacent market you'll disrupt.

Teardowns that show this slide

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

TAM is the total universe if you owned 100%. SAM is the slice you could realistically reach. SOM is what you'll actually capture in the next 3–5 years. Investors care most about SOM math.

Do I need a TAM slide at seed?

You need to prove the market is large enough to matter — one number, ideally bottom-up. A full TAM/SAM/SOM breakdown is overkill at seed and often reads as padding.