Traction
Show one dominant metric with a growth curve, proving momentum rather than potential. This is the highest-weight slide in the pitch.
YC's demo day guide treats traction as the slide investors lean forward for; founders typically spend 20-25 seconds of a 3-minute pitch on one dominant metric and its growth curve.
- One primary metric (revenue, users, or a business-specific KPI)
- A visible growth curve, not just a single end-state number
- The specific multiple and time window (e.g. 4x in 6 months)
- Enough context to know the metric isn't a vanity number
- Five different metrics on one slide
- Vanity metrics like app downloads or sign-ups if revenue exists
- A flat or declining line dressed up with a log scale
- The chart has no axis labels or dates
- The metric shown is not the metric that matters for the business model
- Growth is described only in words with no chart at all
- Choosing a vanity metric because the revenue number is small
- Showing cumulative totals instead of a period-over-period growth curve
- Failing to state the multiple out loud, leaving the room to compute it
- · Is this the metric an investor in my category would ask for first?
- · Does my chart's shape alone communicate growth without the caption?
[Metric] grew [multiple]x in [time period], from $[start] to $[end].
"We've seen incredible growth and strong user engagement across the board."
"Nimbus Payroll grew from $49K to $196K in ARR over 6 months, a 4x increase."
One metric, one time window, one multiple: $196K ARR, +4x in 6 months, nothing else competing for attention on the slide.
Quick quiz
1. Why does traction carry the highest weight of any demo day slide?
- ○ Investors care most about the team
- ✓ Demonstrated momentum is harder to fake than a story, and it directly de-risks the bet
- ○ It's required by SEC regulation
- ○ It's the longest slide to prepare
YC's demo day guidance repeatedly emphasizes traction as the clearest signal available in a short pitch, since a growth curve is observable rather than promised.
2. Which traction statement is strongest?
- ○ We have amazing growth and lots of happy customers.
- ○ Our platform has seen a game-changing surge in engagement.
- ✓ ARR grew from $49K to $196K in 6 months, a 4x increase.
- ○ We are growing faster than most startups at this stage.
It names the metric, the start and end values, the time window, and the multiple.